avformat.c

/*
 * FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
 * Copyright (C) 2005-2015, Anthony Minessale II <anthm@freeswitch.org>
 *
 * Version: MPL 1.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
 *
 * The Initial Developer of the Original Code is
 * Seven Du <dujinfang@gmail.com>
 * Portions created by the Initial Developer are Copyright (C)
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * Seven Du <dujinfang@gmail.com>
 * Anthony Minessale <anthm@freeswitch.org>
 * Jakub Karolczyk <jakub.karolczyk@signalwire.com>
 *
 * mod_avformat -- File Formats with libav.org
 *
 */

#include <switch.h>
#include "mod_av.h"
GCC_DIAG_OFF(deprecated-declarations)
#include <libavcodec/avcodec.h>
#ifdef _MSC_VER
#include <libavcodec/version.h> /* LIBAVCODEC_VERSION_INT */
#endif
#include <libavformat/avformat.h>
#ifdef _MSC_VER
#include <libavformat/version.h> /* LIBAVFORMAT_VERSION_INT */
#endif
#include <libavutil/opt.h>
#include <libavutil/imgutils.h>
#include <libavutil/avstring.h>
#include <libavutil/channel_layout.h>
#include <libswscale/swscale.h>
#ifdef USE_AVRESAMPLE
#include <libavresample/avresample.h>
#define SwrContext AVAudioResampleContext
#define swr_alloc avresample_alloc_context
#define swr_init avresample_open
#define swr_free avresample_free
#define swr_get_out_samples avresample_get_out_samples
#define swr_get_out_samples avresample_get_out_samples
#define swr_convert(ctx, odata, osamples, idata, isamples) \
	avresample_convert(ctx, odata, 0, osamples, (uint8_t **)idata, 0, isamples)
#else
#include <libswresample/swresample.h>
#endif

#define SLICE_SIZE (SWITCH_DEFAULT_VIDEO_SIZE + 100)

GCC_DIAG_ON(deprecated-declarations)
#define SCALE_FLAGS SWS_BICUBIC
#define DFT_RECORD_OFFSET 0


#ifndef AVUTIL_TIMESTAMP_H
#define AVUTIL_TIMESTAMP_H

#define AV_TS_MAX_STRING_SIZE 32
#define UINTVAL(v) (v > 0 ? v : 0);

// Compatibility with old libav on Debian Jessie
// Not required if libavcodec version > 56.34.1
#ifndef AV_CODEC_FLAG_LOOP_FILTER
#define AV_CODEC_FLAG_LOOP_FILTER   	 CODEC_FLAG_LOOP_FILTER
#define AV_CODEC_FLAG_GLOBAL_HEADER 	 CODEC_FLAG_GLOBAL_HEADER
#define AV_CODEC_CAP_VARIABLE_FRAME_SIZE CODEC_CAP_VARIABLE_FRAME_SIZE
#endif

struct avformat_globals {
	enum AVColorSpace colorspace;
};

struct avformat_globals avformat_globals = { 0 };

/* App interface */

// a wrapper around a single output AVStream
typedef struct MediaStream {
	AVStream *st;
	AVFrame *frame;
	AVFrame *tmp_frame;
#if (LIBAVFORMAT_VERSION_MAJOR >= LIBAVFORMAT_V)
	AVCodecContext *codec;
#endif
	// audio
	int channels;
	int sample_rate;
	struct SwrContext *resample_ctx;

	//video
	int width;
	int height;
	struct SwsContext *sws_ctx;
	int64_t next_pts;
	int active;
	int r;
} MediaStream;

typedef struct record_helper_s {
	switch_mutex_t *mutex;
	AVFormatContext *fc;
	MediaStream *video_st;
	switch_timer_t *video_timer;
	int in_callback;
	switch_queue_t *video_queue;
	switch_thread_t *video_thread;
	switch_mm_t *mm;
	int finalize;
	switch_file_handle_t *fh;
	switch_time_t record_timer_paused;
	uint64_t last_ts;
} record_helper_t;

/* file interface */

struct av_file_context {
	switch_memory_pool_t *pool;
	switch_mutex_t *mutex;
	switch_thread_cond_t *cond;
	switch_buffer_t *buf;
	switch_buffer_t *audio_buffer;
	switch_timer_t video_timer;
	int offset;
	int audio_start;
	int aud_ready;
	int vid_ready;
	int audio_ready;
	int closed;

	MediaStream video_st;
	MediaStream audio_st[2];
	AVFormatContext *fc;
#if (LIBAVCODEC_VERSION_MAJOR < LIBAVCODEC_V)
	AVCodec *audio_codec;
	AVCodec *video_codec;
#else
	const AVCodec *audio_codec;
	const AVCodec *video_codec;
#endif
	enum AVColorSpace colorspace;

	int has_audio;
	int has_video;
	
	record_helper_t eh;
	switch_thread_t *file_read_thread;
	int file_read_thread_running;
	int file_read_thread_started;
	switch_time_t video_start_time;
	switch_image_t *last_img;
	int read_fps;
	switch_time_t last_vid_push;
	int64_t seek_ts;
	switch_bool_t read_paused;
	int errs;
	switch_file_handle_t *handle;
	int16_t *mux_buf;
	switch_size_t mux_buf_len;

	switch_time_t last_vid_write;
	int audio_timer;

	unsigned int connect_start_time;
	const char *rw_timeout;
	
	switch_bool_t no_video_decode;
	switch_queue_t *video_pkt_queue;
	switch_packetizer_t *packetizer;
	AVPacket *last_read_pkt;
};

typedef struct av_file_context av_file_context_t;


/**
 * Fill the provided buffer with a string containing a timestamp
 * representation.
 *
 * @param buf a buffer with size in bytes of at least AV_TS_MAX_STRING_SIZE
 * @param ts the timestamp to represent
 * @return the buffer in input
 */
static inline char *av_ts_make_string(char *buf, int64_t ts)
{
    if (ts == AV_NOPTS_VALUE) snprintf(buf, AV_TS_MAX_STRING_SIZE, "NOPTS");
    else                      snprintf(buf, AV_TS_MAX_STRING_SIZE, "%"PRId64"", ts);
    return buf;
}

/**
 * Convenience macro, the return value should be used only directly in
 * function arguments but never stand-alone.
 */
#define av_ts2str(ts) av_ts_make_string((char[AV_TS_MAX_STRING_SIZE]){0}, ts)

/**
 * Fill the provided buffer with a string containing a timestamp time
 * representation.
 *
 * @param buf a buffer with size in bytes of at least AV_TS_MAX_STRING_SIZE
 * @param ts the timestamp to represent
 * @param tb the timebase of the timestamp
 * @return the buffer in input
 */
static inline char *av_ts_make_time_string(char *buf, int64_t ts, AVRational *tb)
{
    if (ts == AV_NOPTS_VALUE) snprintf(buf, AV_TS_MAX_STRING_SIZE, "NOPTS");
    else                      snprintf(buf, AV_TS_MAX_STRING_SIZE, "%.6g", av_q2d(*tb) * ts);
    return buf;
}

/**
 * Convenience macro, the return value should be used only directly in
 * function arguments but never stand-alone.
 */
#define av_ts2timestr(ts, tb) av_ts_make_time_string((char[AV_TS_MAX_STRING_SIZE]){0}, ts, tb)

#endif /* AVUTIL_TIMESTAMP_H */


static switch_status_t av_file_close(switch_file_handle_t *handle);
SWITCH_MODULE_LOAD_FUNCTION(mod_avformat_load);

static inline AVCodecContext *av_get_codec_context(MediaStream *stream)
{
	AVCodecContext *c = NULL;

#if (LIBAVFORMAT_VERSION_MAJOR < LIBAVFORMAT_V)
GCC_DIAG_OFF(deprecated-declarations)
	if (stream->st) {
		c = stream->st->codec;
	}
GCC_DIAG_ON(deprecated-declarations)
#else
	c = stream->codec;
#endif

	return c;
}

static inline enum AVCodecID av_get_codec_id(AVStream *av_stream)
{
	if (!av_stream) {
		return AV_CODEC_ID_NONE;
	}

#if (LIBAVFORMAT_VERSION_MAJOR < LIBAVFORMAT_V)
GCC_DIAG_OFF(deprecated-declarations)
	return av_stream->codec->codec_id;
GCC_DIAG_ON(deprecated-declarations)
#else
	return av_stream->codecpar->codec_id;
#endif
}

static inline enum AVMediaType av_get_codec_type(AVStream *av_stream)
{
	if (!av_stream) {
		return AVMEDIA_TYPE_UNKNOWN;
	}

#if (LIBAVFORMAT_VERSION_MAJOR < LIBAVFORMAT_V)
GCC_DIAG_OFF(deprecated-declarations)
	return av_stream->codec->codec_type;
GCC_DIAG_ON(deprecated-declarations)
#else
	return av_stream->codecpar->codec_type;
#endif
}

static char *const get_error_text(const int error, char *error_buffer, switch_size_t error_buflen)
{
	av_strerror(error, error_buffer, error_buflen);

	return error_buffer;
}

static void av_unused fill_avframe(AVFrame *pict, switch_image_t *img)
{
	int i;
	uint8_t *y = img->planes[0];
	uint8_t *u = img->planes[1];
	uint8_t *v = img->planes[2];

	/* Y */
	for (i = 0; i < pict->height; i++) {
		memcpy(&pict->data[0][i * pict->linesize[0]], y + i * img->stride[0], pict->width);
	}

	/* U/V */
	for(i = 0; i < pict->height / 2; i++) {
		memcpy(&pict->data[1][i * pict->linesize[1]], u + i * img->stride[1], pict->width / 2);
		memcpy(&pict->data[2][i * pict->linesize[2]], v + i * img->stride[2], pict->width / 2);
	}
}

static void av_unused avframe2img(AVFrame *pict, switch_image_t *img)
{
	int i, j;

	if (img->fmt == SWITCH_IMG_FMT_I420) {
		if (pict->format == AV_PIX_FMT_YUV420P) {
			switch_I420_copy2(pict->data, pict->linesize, img->planes, img->stride, img->d_w, img->d_h);
		} else if (pict->format == AV_PIX_FMT_YUVA420P) {
			int linesize[3];
			linesize[0] = pict->linesize[0];
			linesize[1] = pict->linesize[1];
			linesize[2] = pict->linesize[2] + pict->linesize[0];

			switch_I420_copy2(pict->data, linesize, img->planes, img->stride, img->d_w, img->d_h);
		}

	} else if (img->fmt == SWITCH_IMG_FMT_ARGB) {
		if (pict->format == AV_PIX_FMT_YUV420P) {
			switch_rgb_color_t *color = (switch_rgb_color_t *)img->planes[SWITCH_PLANE_PACKED];
			uint8_t *alpha = pict->data[3];

			/*!\brief I420 to ARGB Convertion*/
			switch_I420ToARGB(pict->data[0], pict->linesize[0],
				pict->data[1], pict->linesize[1],
				pict->data[2], pict->linesize[2],
				img->planes[SWITCH_PLANE_PACKED], img->stride[SWITCH_PLANE_PACKED],
				img->d_w, img->d_h);


			for (j = 0; j < img->d_h; j++) {
				for (i = 0; i < img->d_w; i++) {
					color->a = *alpha++;
					color++;
				}
				color = (switch_rgb_color_t *)(img->planes[SWITCH_PLANE_PACKED] + img->stride[SWITCH_PLANE_PACKED] * j);
			}
		} else if (pict->format == AV_PIX_FMT_RGBA) {
#if SWITCH_BYTE_ORDER == __BIG_ENDIAN
			switch_RGBAToARGB(pict->data[0], pict->linesize[0],
				mg->planes[SWITCH_PLANE_PACKED], img->stride[SWITCH_PLANE_PACKED],
				img->d_w, img->d_h);
#else
			switch_ABGRToARGB(pict->data[0], pict->linesize[0],
				img->planes[SWITCH_PLANE_PACKED], img->stride[SWITCH_PLANE_PACKED],
				img->d_w, img->d_h);
#endif
		} else if (pict->format == AV_PIX_FMT_BGRA) {
#if SWITCH_BYTE_ORDER == __BIG_ENDIAN
			switch_BGRAToARGB(pict->data[0], pict->linesize[0],
			, img->planes[SWITCH_PLANE_PACKED], img->stride[SWITCH_PLANE_PACKED],
			, img->d_w, img->d_h);
#else
			switch_ARGBToARGB(pict->data[0], pict->linesize[0],
			img->planes[SWITCH_PLANE_PACKED], img->stride[SWITCH_PLANE_PACKED],
			img->d_w, img->d_h);
#endif
		}
	}
}

static void av_unused avframe2fd(AVFrame *pict, int fd)
{
	int i;
	uint8_t *y = pict->data[0];
	uint8_t *u = pict->data[1];
	uint8_t *v = pict->data[2];

	/* Y */
	for (i = 0; i < pict->height; i++) {
		write(fd, y + i * pict->linesize[0], pict->width);
	}

	/* U/V */
	for(i = 0; i < pict->height / 2; i++) {
		write(fd, u + i * pict->linesize[1], pict->width / 2);
	}

	for(i = 0; i < pict->height / 2; i++) {
		write(fd, v + i * pict->linesize[2], pict->width / 2);
	}
}

static void log_packet(const AVFormatContext *fmt_ctx, const AVPacket *pkt)
{
	if (mod_av_globals.debug < 2) return;

	{
		AVRational *time_base = &fmt_ctx->streams[pkt->stream_index]->time_base;

		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "pts:%s pts_time:%s dts:%s dts_time:%s duration:%s duration_time:%s stream_index:%d\n",
						  av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, time_base),
						  av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, time_base),
						  av_ts2str(pkt->duration), av_ts2timestr(pkt->duration, time_base),
						  pkt->stream_index);
	}
}

static int interrupt_cb(void *cp)
{
	av_file_context_t *context = (av_file_context_t *) cp;

	if (context->closed) {
		return 1;
	}

	return 0;
}
 

static int mod_avformat_alloc_output_context2(AVFormatContext **avctx, const char *format, const char *filename, av_file_context_t *context)
{
	AVFormatContext *s = avformat_alloc_context();
	int ret = 0;

#if (LIBAVFORMAT_VERSION_MAJOR < LIBAVFORMAT_V)
	AVOutputFormat *oformat = NULL;
#else
	const AVOutputFormat *oformat = NULL;
#endif

	s->interrupt_callback.callback = interrupt_cb;
	s->interrupt_callback.opaque = context;

	*avctx = NULL;
	if (!s) {
		goto nomem;
	}

	if (!oformat) {
		if (format) {
			oformat = av_guess_format(format, NULL, NULL);
			if (!oformat) {
				av_log(s, AV_LOG_ERROR, "Requested output format '%s' is not a suitable output format\n", format);
				ret = AVERROR(EINVAL);
				goto error;
			}
		} else {
			oformat = av_guess_format(NULL, filename, NULL);
			if (!oformat) {
				ret = AVERROR(EINVAL);
				av_log(s, AV_LOG_ERROR, "Unable to find a suitable output format for '%s'\n",
					   filename);
				goto error;
			}
		}
	}

	s->oformat = oformat;
	if (s->oformat->priv_data_size > 0) {
		s->priv_data = av_mallocz(s->oformat->priv_data_size);
		if (!s->priv_data) {
			goto nomem;
		}

		if (s->oformat->priv_class) {
			*(const AVClass**)s->priv_data= s->oformat->priv_class;
			av_opt_set_defaults(s->priv_data);
		}
	} else {
		s->priv_data = NULL;
	}

	if (filename) {
#if (LIBAVCODEC_VERSION_INT < AV_VERSION_INT(58,7,100))
		av_strlcpy(s->filename, filename, sizeof(s->filename));
#else
		s->url = av_strdup(filename);
		switch_assert(s->url);
#endif
	}

	*avctx = s;

	return 0;
nomem:
	av_log(s, AV_LOG_ERROR, "Out of memory\n");
	ret = AVERROR(ENOMEM);
error:
	avformat_free_context(s);

	return ret;
}

static int write_frame(AVFormatContext *fmt_ctx, const AVRational *time_base, AVStream *st, AVPacket *pkt)
{
	/* rescale output packet timestamp values from codec to stream timebase */
	av_packet_rescale_ts(pkt, *time_base, st->time_base);
	pkt->stream_index = st->index;

	/* Write the compressed frame to the media file. */
	log_packet(fmt_ctx, pkt);
	return av_interleaved_write_frame(fmt_ctx, pkt);
}

/* Add an output stream. */
#if (LIBAVCODEC_VERSION_MAJOR < LIBAVCODEC_V)
static switch_status_t add_stream(av_file_context_t *context, MediaStream *mst, AVFormatContext *fc, AVCodec **codec, enum AVCodecID codec_id, switch_mm_t *mm)
#else
static switch_status_t add_stream(av_file_context_t *context, MediaStream *mst, AVFormatContext *fc, const AVCodec **codec, enum AVCodecID codec_id, switch_mm_t *mm)
#endif
{
	AVCodecContext *c = NULL;
	switch_status_t status = SWITCH_STATUS_FALSE;
	//int threads = switch_core_cpu_count();
	int buffer_bytes = 2097152; /* 2 mb */
	int fps = 15;

	//if (mm->try_hardware_encoder && codec_id == AV_CODEC_ID_H264) {
	//	*codec = avcodec_find_encoder_by_name("nvenc_h264");
	//}

	if (!*codec) {
		/* find the encoder */
		*codec = avcodec_find_encoder(codec_id);
	}

	if (!(*codec)) {
		 switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Could not find encoder\n");
		return status;
	}

	mst->st = avformat_new_stream(fc, *codec);
	if (!mst->st) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Could not allocate stream\n");
		return status;
	}
	mst->st->id = fc->nb_streams - 1;

#if (LIBAVCODEC_VERSION_MAJOR >= LIBAVCODEC_V)
	mst->codec = avcodec_alloc_context3(*codec);

	if (!mst->codec) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Could not allocate codec context\n");

		return status;
	}
#endif

	c = av_get_codec_context(mst);

	//switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "id:%d den:%d num:%d\n", mst->st->id, mst->st->time_base.den, mst->st->time_base.num);

	//if (threads > 4) {
	//	threads = 4;
	//	}

	switch ((*codec)->type) {
	case AVMEDIA_TYPE_AUDIO:
		c->sample_fmt  = (*codec)->sample_fmts ? (*codec)->sample_fmts[0] : AV_SAMPLE_FMT_FLTP;
		c->bit_rate    = 128000;
		c->sample_rate = mst->sample_rate = context->handle->samplerate;
#if (LIBAVCODEC_VERSION_MAJOR < LIBAVCODEC_V)
		c->channels    = mst->channels;
		c->channel_layout = av_get_default_channel_layout(c->channels);
#else
		av_channel_layout_default(&c->ch_layout, mst->channels);
#endif

		if (mm) {
			if (mm->ab) {
				c->bit_rate = mm->ab * 1024;
			}
			if (mm->samplerate) {
				c->sample_rate = mst->sample_rate = mm->samplerate;
			}
		}

		if (context && context->has_video && !context->handle->stream_name) {
			mst->st->time_base.den = c->sample_rate;
			mst->st->time_base.num = 1;
			c->time_base.den = c->sample_rate;
			c->time_base.num = 1;
		} else {
			// nothing to do for audio only recording, just leave the time base as is
			// switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "stream_timebase: %d/%d codec_timebase: %d/%d nb_samples: %d\n",
			// 	mst->st->time_base.num, mst->st->time_base.den, c->time_base.num, c->time_base.den, c->frame_size);
		}

		break;

	case AVMEDIA_TYPE_VIDEO:

		switch_assert(mm);

		if (mm->vbuf) {
			buffer_bytes = mm->vbuf;
		}
		if (mm->fps) {
			fps = mm->fps;
		} else {
			mm->fps = fps;
		}

		if (mm->vw && mm->vh) {
			mst->width = mm->vw;
			mst->height = mm->vh;
		}

		c->codec_id = codec_id;

		/* Resolution must be a multiple of two. */
		c->width    = mst->width;
		c->height   = mst->height;
		c->bit_rate = mm->vb * 1024;
		mst->st->time_base.den = 90000;
		mst->st->time_base.num = 1;
		c->time_base.den = 90000;
		c->time_base.num = 1;
		c->gop_size      = fps * 10; /* emit one intra frame every 10 frames at most */
		c->pix_fmt       = AV_PIX_FMT_YUV420P;
		//c->thread_count  = threads;
		c->rc_initial_buffer_occupancy = buffer_bytes * 8;

		if (codec_id == AV_CODEC_ID_H264) {
			c->ticks_per_frame = 2;


			c->flags|=AV_CODEC_FLAG_LOOP_FILTER;   // flags=+loop
			c->me_cmp|= 1;  // cmp=+chroma, where CHROMA = 1
			c->me_range = 16;   // me_range=16
			c->max_b_frames = 3;    // bf=3

			av_opt_set_int(c->priv_data, "b_strategy", 1, 0);
			//av_opt_set_int(c->priv_data, "motion_est", ME_HEX, 0);
			av_opt_set(c->priv_data, "motion_est", "hex", 0);
			av_opt_set_int(c->priv_data, "coder", 1, 0);

			switch (mm->vprofile) {
			case SWITCH_VIDEO_PROFILE_BASELINE:
				av_opt_set(c->priv_data, "profile", "baseline", 0);
				c->level = 41;
				break;
			case SWITCH_VIDEO_PROFILE_MAIN:
				av_opt_set(c->priv_data, "profile", "main", 0);
				av_opt_set(c->priv_data, "level", "5", 0);
				c->level = 5;
				break;
			case SWITCH_VIDEO_PROFILE_HIGH:
				av_opt_set(c->priv_data, "profile", "high", 0);
				av_opt_set(c->priv_data, "level", "52", 0);
				c->level = 52;
				break;
			}

			switch (mm->vencspd) {
			case SWITCH_VIDEO_ENCODE_SPEED_SLOW:
				av_opt_set(c->priv_data, "preset", "veryslow", 0);
				break;
			case SWITCH_VIDEO_ENCODE_SPEED_MEDIUM:
				av_opt_set(c->priv_data, "preset", "medium", 0);
				break;
			case SWITCH_VIDEO_ENCODE_SPEED_FAST:
				//av_opt_set_int(c->priv_data, "intra-refresh", 1, 0);
				av_opt_set(c->priv_data, "preset", "veryfast", 0);
				//av_opt_set(c->priv_data, "tune", "animation+zerolatency", 0);
				av_opt_set(c->priv_data, "tune", "fastdecode", 0);
				break;
			default:
				break;
			}
		}

		if (mm->cbr) {
			c->rc_min_rate = c->bit_rate;
			c->rc_max_rate = c->bit_rate;
			c->rc_buffer_size = c->bit_rate;
			c->qcompress = 0;
			c->gop_size = fps * 2;
			c->keyint_min = fps * 2;
		} else {
			c->gop_size = fps * 10;
			c->keyint_min = fps;
			c->i_quant_factor = 0.71; // i_qfactor=0.71
			c->qcompress = 0.6; // qcomp=0.6
			c->qmin = 10;   // qmin=10
			c->qmax = 31;   // qmax=31
			c->max_qdiff = 4;   // qdiff=4
			av_opt_set_int(c->priv_data, "crf", 18, 0);
		}

		if (mm->vb) {
			c->bit_rate = mm->vb * 1024;
		}

		if (mm->keyint) {
			c->gop_size = mm->keyint;
		}

		if (codec_id == AV_CODEC_ID_VP8) {
			av_set_options_string(c, "quality=realtime", "=", ":");
		}

		// av_opt_set_int(c->priv_data, "slice-max-size", SWITCH_DEFAULT_VIDEO_SIZE, 0);

		c->colorspace = context->colorspace;
		c->color_range = AVCOL_RANGE_JPEG;
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "colorspace = %d\n", c->colorspace);

		break;
	default:
		break;
	}

	/* Some formats want stream headers to be separate. */
	if (fc->oformat->flags & AVFMT_GLOBALHEADER) {
		c->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
	}

	mst->active = 1;

	return SWITCH_STATUS_SUCCESS;
}

static AVFrame *alloc_picture(enum AVPixelFormat pix_fmt, int width, int height)
{
	AVFrame *picture;
	int ret;

	picture = av_frame_alloc();
	if (!picture) return NULL;

	picture->format = pix_fmt;
	picture->width  = width;
	picture->height = height;

	/* allocate the buffers for the frame data */
	ret = av_frame_get_buffer(picture, 32);
	if (ret < 0) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Could not allocate frame data.\n");
		return NULL;
	}

	return picture;
}

#if (LIBAVCODEC_VERSION_MAJOR < LIBAVCODEC_V)
static switch_status_t open_video(AVFormatContext *fc, AVCodec *codec, MediaStream *mst)
#else
static switch_status_t open_video(AVFormatContext *fc, const AVCodec *codec, MediaStream *mst)
#endif
{
	int ret;
	AVCodecContext *c = NULL;
	switch_status_t status = SWITCH_STATUS_FALSE;
//int threads = switch_core_cpu_count();
 
//	if (threads > 4) threads = 4;
//	c->thread_count = threads;

	c = av_get_codec_context(mst);

	/* open the codec */
	ret = avcodec_open2(c, codec, NULL);
	if (ret < 0) {
		char ebuf[255] = "";
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Could not open video codec: %s\n", get_error_text(ret, ebuf, sizeof(ebuf)));

		return status;
	}

	/* allocate and init a re-usable frame */
	mst->frame = alloc_picture(c->pix_fmt, c->width, c->height);
	switch_assert(mst->frame);
	mst->frame->pts = 0;

	// switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "pix_fmt: %d\n", c->pix_fmt);
	switch_assert(c->pix_fmt == AV_PIX_FMT_YUV420P); // always I420 for NOW

#if (LIBAVCODEC_VERSION_MAJOR >= LIBAVCODEC_V)
	if (((ret = avcodec_parameters_from_context(mst->st->codecpar, mst->codec)) < 0)) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Could not copy to codec params ret=%d\n", ret);

		return SWITCH_STATUS_FALSE;
	}
#endif

	return SWITCH_STATUS_SUCCESS;
}

#if (LIBAVCODEC_VERSION_MAJOR < LIBAVCODEC_V)
static switch_status_t open_audio(AVFormatContext *fc, AVCodec *codec, MediaStream *mst)
#else
static switch_status_t open_audio(AVFormatContext *fc, const AVCodec *codec, MediaStream *mst)
#endif
{
	AVCodecContext *c = NULL;
	int ret;
	switch_status_t status = SWITCH_STATUS_FALSE;

	c = av_get_codec_context(mst);

	ret = avcodec_open2(c, codec, NULL);

	if (ret == AVERROR_EXPERIMENTAL) {
		const AVCodecDescriptor *desc = avcodec_descriptor_get(c->codec_id);
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Codec [%s] is experimental feature in libavcodec, never mind\n", desc->name);
		c->strict_std_compliance = FF_COMPLIANCE_EXPERIMENTAL;
		ret = avcodec_open2(c, codec, NULL);
	}

	if (ret < 0) {
		const AVCodecDescriptor *desc = avcodec_descriptor_get(c->codec_id);
		char ebuf[255] = "";
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Could not open audio codec [%s], error: %s\n", desc->name, get_error_text(ret, ebuf, sizeof(ebuf)));
		return status;
	}

	mst->frame = av_frame_alloc();
	switch_assert(mst->frame);

	mst->frame->sample_rate    = c->sample_rate;
	mst->frame->format         = AV_SAMPLE_FMT_S16;
#if (LIBAVCODEC_VERSION_MAJOR < LIBAVCODEC_V)
	mst->frame->channel_layout = c->channel_layout;
#else
	mst->frame->ch_layout = c->ch_layout;
#endif

	if (c->codec->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE) {
		//mst->frame->nb_samples = 10000;
#if (LIBAVCODEC_VERSION_MAJOR < LIBAVCODEC_V)
	mst->frame->nb_samples = (mst->frame->sample_rate / 50) * c->channels;
#else
	mst->frame->nb_samples = (mst->frame->sample_rate / 50) * c->ch_layout.nb_channels;
#endif
	} else {
		mst->frame->nb_samples = c->frame_size;
	}

	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "sample_rate: %d nb_samples: %d\n", mst->frame->sample_rate, mst->frame->nb_samples);

	if (c->sample_fmt != AV_SAMPLE_FMT_S16 || c->sample_rate != mst->sample_rate) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "sample_fmt %d != AV_SAMPLE_FMT_S16, start resampler\n", c->sample_fmt);

		mst->resample_ctx = swr_alloc();

		if (!mst->resample_ctx) {
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Could not allocate resampler context\n");
			return status;
		}

		/* set options */
#if (LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(59,27,100)) /* FFmpeg 5.0 */
		av_opt_set_int(mst->resample_ctx, "in_channel_count",   c->channels,       0);
#else	/* FFmpeg 5.1 */
		av_opt_set_chlayout(mst->resample_ctx, "in_chlayout", &c->ch_layout, 0);
#endif
		av_opt_set_int(mst->resample_ctx, "in_sample_rate",     c->sample_rate,    0);
#if (LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(59,27,100))
		av_opt_set_int(mst->resample_ctx, "in_sample_fmt",      AV_SAMPLE_FMT_S16, 0);
		av_opt_set_int(mst->resample_ctx, "in_channel_layout",  c->channel_layout, 0);
		av_opt_set_int(mst->resample_ctx, "out_channel_count",  c->channels,       0);
#else
		av_opt_set_sample_fmt(mst->resample_ctx, "in_sample_fmt", AV_SAMPLE_FMT_S16, 0);
		av_opt_set_chlayout(mst->resample_ctx, "out_chlayout", &c->ch_layout, 0);
#endif
		av_opt_set_int(mst->resample_ctx, "out_sample_rate",    c->sample_rate,    0);
#if (LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(59,27,100))
		av_opt_set_int(mst->resample_ctx, "out_sample_fmt",     c->sample_fmt,     0);
		av_opt_set_int(mst->resample_ctx, "out_channel_layout", c->channel_layout, 0);
#else
		av_opt_set_sample_fmt(mst->resample_ctx, "out_sample_fmt", c->sample_fmt, 0);
#endif

		if (swr_init(mst->resample_ctx) < 0) {
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Failed to initialize the resampling context\n");
			av_free(mst->resample_ctx);
			mst->resample_ctx = NULL;

			return status;
		}
	}

	ret = av_frame_get_buffer(mst->frame, 0);
	if (ret < 0) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Could not allocate audio frame.\n");

		return status;
	}

	if (mst->resample_ctx) {
		mst->tmp_frame = av_frame_alloc();
		switch_assert(mst->tmp_frame);

		mst->tmp_frame->sample_rate    = c->sample_rate;
		mst->tmp_frame->format         = c->sample_fmt;
#if (LIBAVCODEC_VERSION_MAJOR < LIBAVCODEC_V)
		mst->tmp_frame->channel_layout = c->channel_layout;
#else
		mst->tmp_frame->ch_layout = c->ch_layout;
#endif
		mst->tmp_frame->nb_samples     = mst->frame->nb_samples;

		ret = av_frame_get_buffer(mst->tmp_frame, 0);
		if (ret < 0) {
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Could not allocate audio frame.\n");
			return status;
		}
	}

#if (LIBAVCODEC_VERSION_MAJOR >= LIBAVCODEC_V)
	if (((ret = avcodec_parameters_from_context(mst->st->codecpar, mst->codec)) < 0)) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Could not copy to codec params ret=%d\n", ret);

		return SWITCH_STATUS_FALSE;
	}
#endif

	return SWITCH_STATUS_SUCCESS;
}

static int flush_video_queue(switch_queue_t *q, int min)
{
	void *pop;

	if (switch_queue_size(q) > min) {
		while (switch_queue_trypop(q, &pop) == SWITCH_STATUS_SUCCESS) {
			switch_image_t *img = (switch_image_t *) pop;
			switch_img_free(&img);
			if (min && switch_queue_size(q) <= min) {
				break;
			}
		}
	}

	return switch_queue_size(q);
}

static void flush_video_pkt_queue(switch_queue_t *q)
{
	AVPacket *pkt;

	while (switch_queue_trypop(q, (void **)&pkt) == SWITCH_STATUS_SUCCESS) {
		av_packet_free(&pkt);
	}
}

static void *SWITCH_THREAD_FUNC video_thread_run(switch_thread_t *thread, void *obj)
{
	av_file_context_t *context = (av_file_context_t *) obj;
	void *pop = NULL;
	switch_image_t *img = NULL;
	int d_w = context->eh.video_st->width, d_h = context->eh.video_st->height;
	int size = 0, skip = 0, skip_freq = 0, skip_count = 0, skip_total = 0, skip_total_count = 0;
	uint64_t delta_avg = 0, delta_sum = 0, delta_i = 0, delta = 0;
	int first = 1;
	AVCodecContext *c = NULL;

	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "video thread start\n");
	switch_assert(context->eh.video_queue);

	for(;;) {
		AVPacket *pkt = NULL;
#if (LIBAVCODEC_VERSION_MAJOR < LIBAVCODEC_V)
		int got_packet;
#endif
		int ret = -1;

	top:

		switch_assert(context->eh.video_queue);
		while(switch_queue_size(context->eh.video_queue) > 1) {
			switch_image_t *tmp_img;
			switch_queue_pop(context->eh.video_queue, &pop);
			tmp_img = (switch_image_t *) pop;
			switch_img_free(&tmp_img);
		}
		if (switch_queue_pop(context->eh.video_queue, &pop) == SWITCH_STATUS_SUCCESS) {
			switch_img_free(&img);

			if (!pop) {
				goto endfor;
			}

			img = (switch_image_t *) pop;
			
			if (!d_w) d_w = img->d_w;
			if (!d_h) d_h = img->d_h;
			
			if (d_w && d_h && (d_w != img->d_w || d_h != img->d_h)) {
				/* scale to match established stream */
				switch_img_fit(&img, d_w, d_h, SWITCH_FIT_SIZE);
			}
		} else {
			continue;
		}

		if (skip) {
			if ((skip_total_count > 0 && !--skip_total_count) || ++skip_count >= skip_freq) {
				skip_total_count = skip_total;
				skip_count = 0;
				skip--;

				goto top;
			}
		} else {

			size = switch_queue_size(context->eh.video_queue);

			if (size > 5 && !context->eh.finalize) {
				skip = size;

				if (size > 10) {
					skip_freq = 3;
					skip_total = 1;
				} else {
					skip_freq = 2;
					skip_total = 1;
				}
			}
		}

		//switch_mutex_lock(context->eh.mutex);

		context->eh.in_callback = 1;

		if (context->eh.video_st->frame) {
			ret = av_frame_make_writable(context->eh.video_st->frame);
		}

		if (ret < 0) {
			continue;
		}

		if (context->eh.record_timer_paused) {
			context->eh.last_ts = 0;
			continue;
		}

		fill_avframe(context->eh.video_st->frame, img);

		if (first) {
			first = 0; // pts = 0;
		} else if (context->eh.finalize) {
			if (delta_i && !delta_avg) {
				delta_avg = (int)(double)(delta_sum / delta_i);
				delta_i = 1;
				delta_sum = delta_avg;
			}

			if (delta_avg) {
				delta = delta_avg;
			} else if (context->eh.mm->fps) {
				delta = 1000 / context->eh.mm->fps;
			} else {
				delta = 33;
			}

			context->eh.video_st->frame->pts += delta * 90;
		} else {
			uint64_t delta_tmp;

			switch_core_timer_next(context->eh.video_timer);
			delta_tmp = (context->eh.video_timer->samplecount * 90) - context->eh.last_ts;

			if (delta_tmp != 0) {
				delta_sum += delta_tmp;
				delta_i++;

				if (delta_i == UINT64_MAX) {
					delta_i = 1;
					delta_sum = delta_avg;
				}

				if ((delta_i % 10) == 0) {
					delta_avg = (int)(double)(delta_sum / delta_i);
				}
				
				context->eh.video_st->frame->pts = context->eh.video_timer->samplecount * 90;
			} else {
				context->eh.video_st->frame->pts = ((context->eh.video_timer->samplecount) * 90) + 1;
			}
		}

		pkt = av_packet_alloc();

		context->eh.last_ts = context->eh.video_st->frame->pts;

		// switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "pts: %" SWITCH_INT64_T_FMT "\n", context->eh.video_st->frame->pts);

		/* encode the image */
		c = av_get_codec_context(context->eh.video_st);

#if (LIBAVCODEC_VERSION_MAJOR < LIBAVCODEC_V)
GCC_DIAG_OFF(deprecated-declarations)
		ret = avcodec_encode_video2(c, pkt, context->eh.video_st->frame, &got_packet);
GCC_DIAG_ON(deprecated-declarations)

		if (ret < 0) {
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Encoding Error %d\n", ret);
			c = NULL;
			av_packet_free(&pkt);
			continue;
		}

		if (got_packet) {
#else
		ret = avcodec_send_frame(c, context->eh.video_st->frame);

		if (ret == AVERROR_EOF) {
			ret = 0;
		} else if (ret == AVERROR(EAGAIN)) {
			/* we fully drain all the output in each encode call, so this should not ever happen */
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG9, "Error sending frame to encoder AVERROR_BUG - should never happen\n");
			ret = AVERROR_BUG;
		} else if (ret < 0) {
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG9, "Error sending frame to encoder\n");
		}

		while (ret >= 0) {
			ret = avcodec_receive_packet(c, pkt);
			if (ret == AVERROR(EAGAIN)) {
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG9, "No more video packets at the moment\n");
				break;
			} else if (ret == AVERROR_EOF) {
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG9, "No more video packets at all\n");
				break;
			} else if (ret < 0) {
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Encoding error\n");
				break;
			}
#endif

			switch_mutex_lock(context->eh.mutex);
			write_frame(context->eh.fc, &c->time_base, context->eh.video_st->st, pkt);
			switch_mutex_unlock(context->eh.mutex);
		}

		context->eh.in_callback = 0;
		av_packet_free(&pkt);
		c = NULL;
		//switch_mutex_unlock(context->eh.mutex);
	}

 endfor:

	for(;;) {
		AVPacket *pkt = av_packet_alloc();
		int ret = 0;
#if (LIBAVCODEC_VERSION_MAJOR < LIBAVCODEC_V)
		int got_packet = 0;
#else
		int wret = 0;
#endif

		c = av_get_codec_context(context->eh.video_st);

#if (LIBAVCODEC_VERSION_MAJOR < LIBAVCODEC_V)
GCC_DIAG_OFF(deprecated-declarations)
		ret = avcodec_encode_video2(c, pkt, NULL, &got_packet);
GCC_DIAG_ON(deprecated-declarations)

		if (ret < 0) {
			goto do_break;
		} else if (got_packet) {
#else
	ret = avcodec_send_frame(c, NULL);

	if (ret == AVERROR_EOF) {
		ret = 0;
	} else if (ret == AVERROR(EAGAIN)) {
		/* we fully drain all the output in each encode call, so this should not ever happen */
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG9, "Error sending frame to encoder on draining AVERROR_BUG - should never happen\n");
		goto do_break;
	} else if (ret < 0) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG9, "Error sending frame to encoder on draining\n");
		c = NULL;
		goto do_break;
	}

	while (ret >= 0) {
		ret = avcodec_receive_packet(c, pkt);
		if (ret == AVERROR(EAGAIN)) {
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG9, "No more video packets at the moment on draining\n");
			break;
		} else if (ret == AVERROR_EOF) {
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG9, "No more video packets at all on draining \n");
			break;
		} else if (ret < 0) {
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Encoding error on draining\n");
			break;
		}
#endif
			switch_mutex_lock(context->eh.mutex);
#if (LIBAVCODEC_VERSION_MAJOR < LIBAVCODEC_V)
			ret = write_frame(context->eh.fc, &c->time_base, context->eh.video_st->st, pkt);
#else
			wret = write_frame(context->eh.fc, &c->time_base, context->eh.video_st->st, pkt);
#endif
			switch_mutex_unlock(context->eh.mutex);
#if (LIBAVCODEC_VERSION_MAJOR < LIBAVCODEC_V)
			if (ret < 0) {
				goto do_break;
			}
		} else {
			goto do_break;
#else
			if (wret < 0) {
				goto do_break;
			}
#endif
		}

		av_packet_free(&pkt);
		c = NULL;

#if (LIBAVCODEC_VERSION_MAJOR >= LIBAVCODEC_V)
		if (ret < 0 && ret != AVERROR(EAGAIN)) {
			break;
		}
#endif

	continue;
 do_break:
		av_packet_free(&pkt);
		break;
	}

	while(switch_queue_trypop(context->eh.video_queue, &pop) == SWITCH_STATUS_SUCCESS) {
		if (!pop) break;
		img = (switch_image_t *) pop;
		switch_img_free(&img);
	}

	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "video thread done\n");

	return NULL;
}


static void close_stream(AVFormatContext *fc, MediaStream *mst)
{
	AVCodecContext *c = NULL;

	if (!mst->active) return;

	if (mst->resample_ctx) swr_free(&mst->resample_ctx);
	if (mst->sws_ctx) sws_freeContext(mst->sws_ctx);
	if (mst->frame) av_frame_free(&mst->frame);
	if (mst->tmp_frame) av_frame_free(&mst->tmp_frame);

	c = av_get_codec_context(mst);
#if (LIBAVCODEC_VERSION_MAJOR < LIBAVCODEC_V)
	avcodec_close(c);
#else
	/* avcodec_close() will be called in avcodec_free_context() */
	avcodec_free_context(&c);
#endif
	mst->active = 0;
}


static int is_device(const AVClass *avclass)
{
#if defined (AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT)
	if (!avclass) return 0;


	    return  avclass->category == AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT ||
			            avclass->category == AV_CLASS_CATEGORY_DEVICE_VIDEO_INPUT ||
			            avclass->category == AV_CLASS_CATEGORY_DEVICE_AUDIO_OUTPUT ||
			            avclass->category == AV_CLASS_CATEGORY_DEVICE_AUDIO_INPUT ||
			            avclass->category == AV_CLASS_CATEGORY_DEVICE_OUTPUT ||
			avclass->category == AV_CLASS_CATEGORY_DEVICE_INPUT;
		#endif

		return 0;

}

void show_formats(switch_stream_handle_t *stream) {
	const AVInputFormat *ifmt  = NULL;
	const AVOutputFormat *ofmt = NULL;
	const char *last_name;
	// int is_dev;

	stream->write_function(stream, "============= File Formats ==============================:\n"
		   " D. = Demuxing supported\n"
		   " .M = Muxing supported\n"
		   "----------------------\n");

	last_name = "000";

	for (;;) {
		int decode = 0;
		int encode = 0;
		int is_dev = 0;
		const char *name      = NULL;
		const char *long_name = NULL;

#if (LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(58,9,100))
		while ((ofmt = av_oformat_next(ofmt))) {
#else
		void *i = 0;

		while ((ofmt = av_muxer_iterate(&i))) {
#endif

			is_dev = is_device(ofmt->priv_class);

			if ((name == NULL || strcmp(ofmt->name, name) < 0) &&
				strcmp(ofmt->name, last_name) > 0) {
				name      = ofmt->name;
				long_name = ofmt->long_name;
				encode    = 1;
			}
		}

#if (LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(58,9,100))
		while ((ifmt = av_iformat_next(ifmt))) {
#else
		i = 0;
		while ((ifmt = av_demuxer_iterate(&i))) {
#endif
			is_dev = is_device(ifmt->priv_class);

			if ((name == NULL || strcmp(ifmt->name, name) < 0) &&
				strcmp(ifmt->name, last_name) > 0) {
				name      = ifmt->name;
				long_name = ifmt->long_name;
				encode    = 0;
			}

			if (name && strcmp(ifmt->name, name) == 0) decode = 1;
		}

		if (name == NULL) break;

		last_name = name;

		stream->write_function(stream, "%s%s%s %-15s %s\n",
			is_dev ? "*" : " ",
			decode ? "D" : " ",
			encode ? "M" : " ",
			name, long_name ? long_name:" ");
	}

}

static void mod_avformat_destroy_output_context(av_file_context_t *context)
{

	close_stream(context->fc, &context->video_st);
	close_stream(context->fc, &context->audio_st[0]);
	close_stream(context->fc, &context->audio_st[1]);

	if (context->audio_st[0].resample_ctx) {
		swr_free(&context->audio_st[0].resample_ctx);
	}

	if (context->audio_st[1].resample_ctx) {
		swr_free(&context->audio_st[1].resample_ctx);
	}

	avformat_close_input(&context->fc);

	context->fc = NULL;
	context->audio_st[0].st = NULL;
	context->audio_st[1].st = NULL;
	context->video_st.st = NULL;
	
}

static switch_status_t open_input_file(av_file_context_t *context, switch_file_handle_t *handle, const char *filename)
{
#if (LIBAVCODEC_VERSION_MAJOR < LIBAVCODEC_V)
	AVCodec *audio_codec = NULL;
	AVCodec *video_codec = NULL;
#else
	const AVCodec *audio_codec = NULL;
	const AVCodec *video_codec = NULL;
#endif
	enum AVCodecID codec_id;
	AVCodecContext *cc = NULL;
	AVDictionary *opts = NULL;
	int error;
	int i, idx = 0;
	switch_status_t status = SWITCH_STATUS_SUCCESS;
	
	// av_dict_set(&opts, "c:v", "libvpx", 0);

	/** Open the input file to read from it. */

	if (!context->fc) {
		context->fc = avformat_alloc_context();
	}

	if (!context->fc) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Could not open input file '%s' (error '%s')\n", filename, "NO MEM");
		switch_goto_status(SWITCH_STATUS_FALSE, err);
	}

	context->fc->interrupt_callback.callback = interrupt_cb;
	context->fc->interrupt_callback.opaque = context;

	if ((error = avformat_open_input(&context->fc, filename, NULL, NULL)) < 0) {
		char ebuf[255] = "";
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Could not open input file '%s' (error '%s')\n", filename, get_error_text(error, ebuf, sizeof(ebuf)));
		avformat_free_context(context->fc);
		context->fc = NULL;
		switch_goto_status(SWITCH_STATUS_FALSE, err);
	}

	handle->seekable = context->fc->iformat->read_seek2 ? 1 : (context->fc->iformat->read_seek ? 1 : 0);
	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "file %s is %sseekable\n", filename, handle->seekable ? "" : "not ");

	/** Get information on the input file (number of streams etc.). */
	if ((error = avformat_find_stream_info(context->fc, opts ? &opts : NULL)) < 0) {
		char ebuf[255] = "";
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Could not find stream info in file: %s, error = %s)\n", filename, get_error_text(error, ebuf, sizeof(ebuf)));
		if (opts) av_dict_free(&opts);
		switch_goto_status(SWITCH_STATUS_FALSE, err);
	}

	if (opts) av_dict_free(&opts);

	av_dump_format(context->fc, 0, filename, 0);

	for (i = 0; i < context->fc->nb_streams; i++) {
		enum AVMediaType codec_type = av_get_codec_type(context->fc->streams[i]);

		if (codec_type == AVMEDIA_TYPE_AUDIO && context->has_audio < 2 && idx < 2) {
			context->audio_st[idx++].st = context->fc->streams[i];
			context->has_audio++;
		} else if (codec_type == AVMEDIA_TYPE_VIDEO && !context->has_video) {
			context->video_st.st = context->fc->streams[i];
			if (switch_test_flag(handle, SWITCH_FILE_FLAG_VIDEO)) {
				context->has_video = 1;
#if (LIBAVFORMAT_VERSION_MAJOR < LIBAVFORMAT_V)
				handle->duration = av_rescale_q(context->video_st.st->duration != AV_NOPTS_VALUE ? context->video_st.st->duration : context->fc->duration / AV_TIME_BASE * 1000,
					context->video_st.st->time_base, AV_TIME_BASE_Q);
			}

			if (context->fc->bit_rate) {
				handle->mm.source_kps = context->fc->bit_rate / 1024;
			}

			if (context->video_st.st->avg_frame_rate.num) {
				handle->mm.source_fps = ceil(av_q2d(context->video_st.st->avg_frame_rate));
			} else {
				handle->mm.source_fps = 25;
			}

			context->read_fps = (int)handle->mm.source_fps;
#else
			}
#endif
		}
	}

	/** Find a decoder for the audio stream. */
	if (context->has_audio && !(audio_codec = avcodec_find_decoder((codec_id = av_get_codec_id(context->audio_st[0].st))))) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Could not find input codec %d\n", codec_id);
		context->has_audio = 0;
	}

	if (context->has_video && !(video_codec = avcodec_find_decoder((codec_id = av_get_codec_id(context->video_st.st))))) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Could not find input codec %d\n", codec_id);
		context->has_video = 0;
	}

#if (LIBAVFORMAT_VERSION_MAJOR >= LIBAVFORMAT_V)
	if (context->has_audio == 2) {
		context->audio_st[1].codec = avcodec_alloc_context3(audio_codec);
		context->audio_st[0].codec = avcodec_alloc_context3(audio_codec);
	} else if (context->has_audio) {
		context->audio_st[0].codec = avcodec_alloc_context3(audio_codec);
	}

	if (context->has_video) {
		context->video_st.codec = avcodec_alloc_context3(video_codec);
	}
#endif

	cc = av_get_codec_context(&context->audio_st[0]);
#if (LIBAVFORMAT_VERSION_MAJOR < LIBAVFORMAT_V)
	if (context->has_audio && ((error = avcodec_open2(cc, audio_codec, NULL)) < 0)) {
#else
	if (context->has_audio && (((error = avcodec_parameters_to_context(cc, context->audio_st[0].st->codecpar)) < 0) || ((error = avcodec_open2(cc, audio_codec, NULL)) < 0))) {
#endif
		char ebuf[255] = "";
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Could not open input audio codec (error '%s')\n", get_error_text(error, ebuf, sizeof(ebuf)));
		context->has_audio = 0;
	}

	cc = av_get_codec_context(&context->audio_st[1]);
#if (LIBAVFORMAT_VERSION_MAJOR < LIBAVFORMAT_V)
	if (context->has_audio == 2 && ((error = avcodec_open2(cc, audio_codec, NULL)) < 0)) {
#else
	if (context->has_audio == 2 && (((error = avcodec_parameters_to_context(cc, context->audio_st[1].st->codecpar)) < 0) || ((error = avcodec_open2(cc, audio_codec, NULL)) < 0))) {
#endif
		char ebuf[255] = "";

		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Could not open input audio codec channel 2 (error '%s')\n", get_error_text(error, ebuf, sizeof(ebuf)));
		if ((cc = av_get_codec_context(&context->audio_st[0]))) {
			avcodec_close(cc);
		}

		context->has_audio = 0;
	}

	cc = av_get_codec_context(&context->video_st);

#if (LIBAVFORMAT_VERSION_MAJOR < LIBAVFORMAT_V)
	if (context->has_video && (error = avcodec_open2(cc, video_codec, NULL)) < 0) {
#else
	if (context->has_video) {
		if (((error = avcodec_parameters_to_context(cc, context->video_st.st->codecpar)) < 0) || ((error = avcodec_open2(cc, video_codec, NULL)) < 0)) {
#endif
		char ebuf[255] = "";

		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Could not open input codec (error '%s')\n", get_error_text(error, ebuf, sizeof(ebuf)));
		context->has_video = 0;
	}

#if (LIBAVFORMAT_VERSION_MAJOR >= LIBAVFORMAT_V)
		handle->duration = av_rescale_q(context->video_st.st->duration != AV_NOPTS_VALUE ? context->video_st.st->duration : context->fc->duration / AV_TIME_BASE * 1000,
		context->video_st.st->time_base, AV_TIME_BASE_Q);

		if (context->fc->bit_rate) {
			handle->mm.source_kps = context->fc->bit_rate / 1024;
		}

		if (context->video_st.st->avg_frame_rate.num) {
			handle->mm.source_fps = ceil(av_q2d(context->video_st.st->avg_frame_rate));
		} else {
			handle->mm.source_fps = 25;
	}

	context->read_fps = (int)handle->mm.source_fps;

	}
#endif

	context->video_st.active = 1;

	// printf("has audio:%d has_video:%d\n", context->has_audio, context->has_video);

	if ((!context->has_audio) && (!context->has_video)) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Neither audio nor video stream found in file %s\n", filename);
		switch_goto_status(SWITCH_STATUS_FALSE, err);
	}

	if (context->has_audio) {
		AVCodecContext *c[2] = { NULL };

		if (!(c[0] = av_get_codec_context(&context->audio_st[0]))) {
			switch_goto_status(SWITCH_STATUS_FALSE, err);
		}

		if ((cc = av_get_codec_context(&context->audio_st[1]))) {
			c[1] = cc;
		}

		context->audio_st[0].frame = av_frame_alloc();
		switch_assert(context->audio_st[0].frame);

		context->audio_st[0].active = 1;

		if (c[1]) {
			context->audio_st[1].frame = av_frame_alloc();
			switch_assert(context->audio_st[1].frame);

			context->audio_st[0].channels = 1;
			context->audio_st[1].channels = 1;
		} else {
#if (LIBAVCODEC_VERSION_MAJOR < LIBAVFORMAT_V)
			handle->channels = c[0]->channels > 2 ? 2 : c[0]->channels;
#else
			handle->channels = c[0]->ch_layout.nb_channels > 2 ? 2 : c[0]->ch_layout.nb_channels;
#endif
			context->audio_st[0].channels = handle->channels;
		}

		context->audio_st[0].sample_rate = handle->samplerate;
		context->audio_st[1].sample_rate = handle->samplerate;

		if (c[0]->sample_fmt != AV_SAMPLE_FMT_S16 || c[0]->sample_rate != handle->samplerate) {
			int x;

 			for (x = 0; x < context->has_audio && x < 2 && c[x]; x++) {
				struct SwrContext *resample_ctx = swr_alloc();

				if (resample_ctx) {
					int ret;

#if (LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(59,27,100)) /* FFmpeg 5.0 */
					av_opt_set_int(resample_ctx, "in_channel_count",   c[x]->channels,       0);
#else	/* FFmpeg 5.1 */
					av_opt_set_chlayout(resample_ctx, "in_chlayout", &c[x]->ch_layout, 0);
#endif
					av_opt_set_int(resample_ctx, "in_sample_rate",     c[x]->sample_rate,    0);
#if (LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(59,27,100))
					av_opt_set_int(resample_ctx, "in_sample_fmt",      c[x]->sample_fmt,     0);
					av_opt_set_int(resample_ctx, "in_channel_layout",
								   (c[x]->channel_layout == 0 && c[x]->channels == 2) ? AV_CH_LAYOUT_STEREO : c[x]->channel_layout, 0);
					av_opt_set_int(resample_ctx, "out_channel_count",  handle->channels,  0);
#else
					av_opt_set_sample_fmt(resample_ctx, "in_sample_fmt",      c[x]->sample_fmt,     0);
					av_opt_set_chlayout(resample_ctx, "out_chlayout",  &c[x]->ch_layout,     0);
#endif
					av_opt_set_int(resample_ctx, "out_sample_rate",    handle->samplerate,0);
#if (LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(59,27,100))
					av_opt_set_int(resample_ctx, "out_sample_fmt",     AV_SAMPLE_FMT_S16, 0);
					av_opt_set_int(resample_ctx, "out_channel_layout", handle->channels == 2 ? AV_CH_LAYOUT_STEREO : AV_CH_LAYOUT_MONO, 0);
#else
					av_opt_set_sample_fmt(resample_ctx, "out_sample_fmt", AV_SAMPLE_FMT_S16, 0);
#endif

					if ((ret = swr_init(resample_ctx)) < 0) {
						char errbuf[1024];
						av_strerror(ret, errbuf, 1024);
						
						switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Failed to initialize the resampling context, ret=%d: %s\n", ret, errbuf);
						av_free(resample_ctx);
						switch_goto_status(SWITCH_STATUS_FALSE, err);
					}

					context->audio_st[x].resample_ctx = resample_ctx;
				}
			}
		}
	}

	if (!context->has_video) {
		switch_clear_flag(handle, SWITCH_FILE_FLAG_VIDEO);
	} else {
		if (!(cc = av_get_codec_context(&context->video_st))) {
			goto err;
		}

		switch (cc->pix_fmt) {
		case AV_PIX_FMT_YUVA420P:
		case AV_PIX_FMT_RGBA:
		case AV_PIX_FMT_ARGB:
		case AV_PIX_FMT_BGRA:
			context->handle->mm.fmt = SWITCH_IMG_FMT_ARGB;
			break;
		default:
			context->handle->mm.fmt = SWITCH_IMG_FMT_I420;
			break;
		}

		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, 
						  "Opening file in mode: %s\n", context->handle->mm.fmt == SWITCH_IMG_FMT_ARGB ? "ARGB" : "I420");
	}

	return status;

err:
	if (context->fc) {
		int nb_streams = context->fc->nb_streams;

		if (nb_streams > 2) nb_streams = 2;

		if (context->has_video) close_stream(context->fc, &context->video_st);

		for (i = 0; i < nb_streams; i++) {
			close_stream(context->fc, &context->audio_st[i]);
		}

		avformat_free_context(context->fc);
		context->fc = NULL;
	}

	return status;
}

//#define ALT_WAY
#define AUDIO_BUF_SEC 5

static void *SWITCH_THREAD_FUNC file_read_thread_run(switch_thread_t *thread, void *obj)
{
	av_file_context_t *context = (av_file_context_t *) obj;
	AVPacket *pkt = NULL;
#if (LIBAVCODEC_VERSION_MAJOR < LIBAVCODEC_V)
	int got_data = 0;
#else
	int dret = -1;
#endif
	int error;
	int sync  = 0;
	int eof = 0;
	AVCodecContext *c = NULL;
#if (LIBAVCODEC_VERSION_MAJOR >= LIBAVCODEC_V)
	AVFrame *vframe = NULL;
#endif

	switch_mutex_lock(context->mutex);
	context->file_read_thread_started = 1;
	context->file_read_thread_running = 1;
	switch_thread_cond_signal(context->cond);
	switch_mutex_unlock(context->mutex);

	while (context->file_read_thread_running && !context->closed) {
		int vid_frames = 0;

		if (context->seek_ts >= 0) {
			int stream_id = -1;

			switch_mutex_lock(context->mutex);
			switch_buffer_zero(context->audio_buffer);
			switch_mutex_unlock(context->mutex);

			// if (context->has_audio) stream_id = context->audio_st.st->index;
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "seeking to %" SWITCH_INT64_T_FMT "\n", context->seek_ts);
			avformat_seek_file(context->fc, stream_id, 0, context->seek_ts, INT64_MAX, 0);
			context->seek_ts = -2;

			if (context->has_video) {
				void *pop;
				
				context->video_st.next_pts = 0;
				context->video_start_time = 0;
				if (!(c = av_get_codec_context(&context->video_st))) {
					break;
				}

				avcodec_flush_buffers(c);

				while(switch_queue_trypop(context->eh.video_queue, &pop) == SWITCH_STATUS_SUCCESS) {
					switch_image_t *img;
					if (!pop) break;
					img = (switch_image_t *) pop;
					switch_img_free(&img);
				}
			}
		}

		if (context->has_video) {
			vid_frames = switch_queue_size(context->eh.video_queue);
		}
		
		if (switch_buffer_inuse(context->audio_buffer) > AUDIO_BUF_SEC * context->handle->samplerate * context->handle->channels * 2 &&
			(!context->has_video || vid_frames > 5)) {
			switch_yield(context->has_video ? 1000 : 10000);
			continue;
		}

		if (pkt) av_packet_free(&pkt);
		pkt = av_packet_alloc();

		if ((error = av_read_frame(context->fc, pkt)) < 0) {
			if (error == AVERROR_EOF) {
				if (!context->has_video) break;

				eof = 1;
				/* just make sure*/
				pkt->data = NULL;
				pkt->size = 0;
				pkt->stream_index = context->video_st.st->index;
			} else {
				char ebuf[255] = "";
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Could not read frame (error '%s')\n", get_error_text(error, ebuf, sizeof(ebuf)));
				continue;
			}
		}

		// switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "stream: %d, pkt size %d\n", pkt.stream_index, pkt.size);

		if (context->has_video && pkt->stream_index == context->video_st.st->index) {
#if (LIBAVCODEC_VERSION_MAJOR < LIBAVCODEC_V)
			AVFrame *vframe = NULL;
#endif
			switch_image_t *img;

			if (context->no_video_decode) {
				if (eof) {
					break;
				} else {
					switch_status_t status;
					AVPacket *new_pkt = av_packet_alloc();

					if (0) { // debug
						uint8_t *p = pkt->data;
						switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "size = %u %x %x %x %x %x %x\n", pkt->size, *p, *(p+1), *(p+2), *(p+3), *(p+4), *(p+5));
					}

					av_packet_ref(new_pkt, pkt);
					status = switch_queue_push(context->video_pkt_queue, new_pkt);
					// switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "size = %4u flag=%x pts=%" SWITCH_INT64_T_FMT " dts=%" SWITCH_INT64_T_FMT "\n", pkt.size, pkt.flags, pkt.pts, pkt.dts);

					context->vid_ready = 1;
					if (status != SWITCH_STATUS_SUCCESS) {
						av_packet_free(&new_pkt);
					}

					continue;
				}
			}

			if (!sync) {
				switch_buffer_zero(context->audio_buffer);
				sync = 1;
			}

again:
			vframe = av_frame_alloc();
			switch_assert(vframe);

			if (!(c = av_get_codec_context(&context->video_st))) {
				break;
			}

#if (LIBAVCODEC_VERSION_MAJOR < LIBAVCODEC_V)
GCC_DIAG_OFF(deprecated-declarations)
			error = avcodec_decode_video2(c, vframe, &got_data, pkt);
GCC_DIAG_ON(deprecated-declarations)
#else
			if (eof) {
				dret = avcodec_send_packet(c, NULL);
			} else {
				dret = avcodec_send_packet(c, pkt);
			}

			if (dret == AVERROR_EOF) {
				dret = 0;
			} else if (dret == AVERROR(EAGAIN)) {
				/* we fully drain all the output in each decode call, so this should not ever happen */
				dret = AVERROR_BUG;
				goto check_errors;
			} else if (dret < 0) {
				goto check_errors;
			}

			while (dret >= 0) {
				dret = avcodec_receive_frame(c, vframe);
				if (dret == AVERROR(EAGAIN)) {
					switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG9, "No more video frames at the moment\n");
				} else if (dret == AVERROR_EOF) {
					switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG9, "No more video frames at all\n");
				} else if (dret < 0) {
					switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG9, "Video decoding error\n");
				}
#endif

#if (LIBAVCODEC_VERSION_MAJOR >= LIBAVCODEC_V)
 check_errors:
			if (dret < 0 && dret != AVERROR(EAGAIN) && dret != AVERROR_EOF) {
#else
			if (error < 0) {
#endif
				char ebuf[255] = "";

				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Could not decode frame (error '%s')\n", get_error_text(error, ebuf, sizeof(ebuf)));
				av_frame_free(&vframe);
				continue;
			}

			// switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "pkt: %d, pts: %lld dts: %lld\n", pkt.size, pkt.pts, pkt.dts);
			av_packet_unref(pkt);

			//if (switch_queue_size(context->eh.video_queue) > 300) {
			//	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Dropping frames\n");
			//	av_frame_free(&vframe);
			//	continue;
			//}
			// switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "got_data=%d, error=%d\n", got_data, error);

#if (LIBAVCODEC_VERSION_MAJOR < LIBAVCODEC_V)
			if (got_data && error >= 0) {
#else
			if (dret >= 0) {
#endif
				switch_img_fmt_t fmt = SWITCH_IMG_FMT_I420;
				if ((
						vframe->format == AV_PIX_FMT_YUVA420P ||
						vframe->format == AV_PIX_FMT_RGBA ||
						vframe->format == AV_PIX_FMT_ARGB ||
						vframe->format == AV_PIX_FMT_BGRA )) {
					fmt = SWITCH_IMG_FMT_ARGB;
				} else if (vframe->format != AV_PIX_FMT_YUV420P) {
					AVFrame *frm = vframe;
					int ret;

					if (!context->video_st.sws_ctx) {
						context->video_st.sws_ctx =
							sws_getContext(frm->width, frm->height,
											frm->format,
											frm->width, frm->height,
											AV_PIX_FMT_YUV420P,
											SCALE_FLAGS, NULL, NULL, NULL);
						if (!context->video_st.sws_ctx) {
							switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Cannot init sws context\n");
							av_frame_free(&frm);
							goto do_continue;
						}
					}

					vframe = av_frame_alloc();
					switch_assert(vframe);

					vframe->format = AV_PIX_FMT_YUV420P;
					vframe->width = frm->width;
					vframe->height = frm->height;
					vframe->pts = frm->pts;
#if (LIBAVUTIL_VERSION_MAJOR < LIBAVUTIL_V)
GCC_DIAG_OFF(deprecated-declarations)
					vframe->pkt_pts = frm->pkt_pts;
GCC_DIAG_ON(deprecated-declarations)
#endif
					vframe->pkt_dts = frm->pkt_dts;
					ret = av_frame_get_buffer(vframe, 32);

					switch_assert(ret >= 0);

					ret = sws_scale(context->video_st.sws_ctx, (const uint8_t *const *)frm->data, frm->linesize,
						  0, frm->height, vframe->data, vframe->linesize);

					av_frame_free(&frm);

					if (ret <= 0 ) {
						av_frame_free(&vframe);
						goto do_continue;
					}
				}

				context->handle->mm.fmt = fmt;

				img = switch_img_alloc(NULL, fmt, vframe->width, vframe->height, 1);

				if (img) {
					int64_t *pts = malloc(sizeof(int64_t));

					if (pts) {
#ifdef ALT_WAY
						int diff;
						int sleep = 66000;
#endif
#if (LIBAVUTIL_VERSION_MAJOR < LIBAVUTIL_V)
GCC_DIAG_OFF(deprecated-declarations)
						*pts = vframe->pkt_pts;
GCC_DIAG_ON(deprecated-declarations)
#else
						*pts = vframe->pts;
#endif
						avframe2img(vframe, img);
						img->user_priv = pts;

#ifdef ALT_WAY
						diff = sleep - (switch_time_now() - context->last_vid_push);

						if (diff > 0 && diff <= sleep) {
							switch_core_timer_next(&context->video_timer);
						} else {
							switch_core_timer_sync(&context->video_timer);
						}
#endif

						context->vid_ready = 1;
						switch_queue_push(context->eh.video_queue, img);
						context->last_vid_push = switch_time_now();
					} else {
						switch_img_free(&img);
					}
				}
			}

#if (LIBAVCODEC_VERSION_MAJOR < LIBAVCODEC_V)
			av_frame_free(&vframe);
#endif

			if (eof) {
#if (LIBAVCODEC_VERSION_MAJOR < LIBAVCODEC_V)
				if (got_data) {
#else
				if (dret != AVERROR_EOF) {
#endif
#if (LIBAVCODEC_VERSION_MAJOR < LIBAVCODEC_V)
					goto again; // to get all delayed video frames in decoder
#else
					av_frame_free(&vframe);
					goto again; // to get all delayed video frames in decoder
#endif
				} else {
					goto do_break;
				}
			}

#if (LIBAVCODEC_VERSION_MAJOR >= LIBAVCODEC_V)
			}

			av_frame_free(&vframe);
#endif
			goto do_continue;
		} else if (context->has_audio && pkt->stream_index == context->audio_st[0].st->index) {
			AVFrame in_frame = { { 0 } };

			if (!(c = av_get_codec_context(&context->audio_st[0]))) {
				continue;
			}

#if (LIBAVCODEC_VERSION_MAJOR < LIBAVCODEC_V)
GCC_DIAG_OFF(deprecated-declarations)
			if ((error = avcodec_decode_audio4(c, &in_frame, &got_data, pkt)) < 0) {
GCC_DIAG_ON(deprecated-declarations)
				char ebuf[255] = "";
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Could not decode frame (error '%s')\n", get_error_text(error, ebuf, sizeof(ebuf)));
				continue;
			}
#else
			dret = avcodec_send_packet(c, pkt);

			if (dret == AVERROR_EOF) {
				dret = 0;
			} else if (dret == AVERROR(EAGAIN)) {
				/* we fully drain all the output in each decode call, so this should not ever happen */
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG9, "Error sending audio packet to decoder - BUG, should never happen\n");
				goto do_continue;
			} else if (dret < 0) {
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG9, "Error sending audio packet to decoder\n");
				goto do_continue;
			}

			while (dret >= 0) {
				dret = avcodec_receive_frame(c, &in_frame);
				if (dret == AVERROR(EAGAIN)) {
					switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG9, "No more audio frames at the moment\n");
				} else if (dret == AVERROR_EOF) {
					switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG9, "No more audio frames at all\n");
				} else if (dret < 0) {
					switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG9, "Video decoding error\n");
					goto do_continue;
				}
#endif

			// switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "pkt: %d, decodedddd: %d pts: %lld dts: %lld\n", pkt.size, error, pkt.pts, pkt.dts);
			av_packet_unref(pkt);

#if (LIBAVCODEC_VERSION_MAJOR < LIBAVCODEC_V)
			if (got_data) {
#else
			if (dret >= 0) {
#endif
				// switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "got data frm->format: %d samples: %d\n", in_frame.format, in_frame.nb_samples);

				if (context->audio_st[0].resample_ctx) {
					int out_samples = swr_get_out_samples(context->audio_st[0].resample_ctx, in_frame.nb_samples);
					int ret;
					uint8_t *data[2] = { 0 };

					data[0] = malloc(out_samples * context->audio_st[0].channels * 2);
					switch_assert(data[0]);

					ret = swr_convert(context->audio_st[0].resample_ctx, data, out_samples,
						(const uint8_t **)in_frame.data, in_frame.nb_samples);

					// switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "out_samples: %d ret: %d delay: %ld buffer: %zu\n", out_samples, ret, swr_get_delay(context->audio_st[0].resample_ctx, 8000), switch_buffer_inuse(context->audio_buffer));

					if (ret) {
						switch_mutex_lock(context->mutex);
						switch_buffer_write(context->audio_buffer, data[0], ret * 2 * context->audio_st[0].channels);
						switch_mutex_unlock(context->mutex);
					}

					// switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "decoded samples: %d\n", ret);

					free(data[0]);

					// if (ret == 0 && avresample_get_delay(context->audio_st[0].resample_ctx)) {
					// 	frameP = NULL;
					// 	goto again;
					// }

				} else {
					//switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "this block is not tested samples: %d\n", in_frame.nb_samples);
					switch_mutex_lock(context->mutex);
					switch_buffer_write(context->audio_buffer, in_frame.data[0], in_frame.nb_samples * 2 * context->audio_st[0].channels);
					switch_mutex_unlock(context->mutex);
				}

			}
#if (LIBAVCODEC_VERSION_MAJOR >= LIBAVCODEC_V)
			}
		}
#else
		} else {
			av_packet_unref(pkt);
		}
#endif

 do_continue:
		continue;
 do_break:
		break;
	}

	av_packet_free(&pkt);
#if (LIBAVCODEC_VERSION_MAJOR >= LIBAVCODEC_V)
	av_frame_free(&vframe);
#endif

	if (context->has_video) switch_queue_push(context->eh.video_queue, NULL);

	context->file_read_thread_running = 0;

	return NULL;
}

static int avio_interrupt_cb(void *ctx) 
{ 
	av_file_context_t* context = (av_file_context_t*)ctx;
	
	if (context == NULL) {
		return 0;
	} else {
		return context->closed;
	}
} 

static switch_status_t av_file_open(switch_file_handle_t *handle, const char *path)
{
	av_file_context_t *context = NULL;
	char *ext;
	const char *tmp = NULL;
#if (LIBAVFORMAT_VERSION_MAJOR < LIBAVFORMAT_V)
	AVOutputFormat *fmt;
#else
	const AVOutputFormat *fmt;
	enum AVCodecID video_codec = AV_CODEC_ID_NONE;
	enum AVCodecID audio_codec = AV_CODEC_ID_NONE;
#endif
	AVDictionary *dict = NULL; // Might be useful to set some options from what we got from the cmd
	const char *format = NULL;
	int ret;
	char file[1024];
	int disable_write_buffer = 0;
	switch_status_t status = SWITCH_STATUS_SUCCESS;

	switch_set_string(file, path);
	
	if (handle->stream_name) {
		disable_write_buffer = 1;
	}

	if (handle->stream_name && (!strcasecmp(handle->stream_name, "rtmp") || !strcasecmp(handle->stream_name, "rtmps") || !strcasecmp(handle->stream_name, "youtube"))) {
		char *secure = "";

		format = "flv";
		if ((ext = strrchr((char *)path, '.')) == 0) {
			ext = ".flv";
		}

		if (!strcasecmp(handle->stream_name, "rtmps")) secure = "s";

		// meh really silly format for the user / pass libav.....
		if (handle->mm.auth_username && handle->mm.auth_password) { 
			switch_snprintf(file, sizeof(file), "rtmp%s://%s pubUser=%s pubPasswd=%s flashver=FMLE/3.0", secure, path, handle->mm.auth_username, handle->mm.auth_password);
		} else {
			switch_snprintf(file, sizeof(file), "rtmp%s://%s", secure, path);
		}

	} else if (handle->stream_name && !strcasecmp(handle->stream_name, "rtsp")) {
		format = "rtsp";
		if ((ext = strrchr((char *)path, '.')) == 0) {
			ext = ".rtsp";
		}
		switch_snprintf(file, sizeof(file), "rtsp://%s", path);
		disable_write_buffer = 1;
	} else if ((ext = strrchr((char *)path, '.')) == 0) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Invalid Format\n");
		return SWITCH_STATUS_GENERR;
	}


	ext++;

	if ((context = (av_file_context_t *)switch_core_alloc(handle->memory_pool, sizeof(av_file_context_t))) == 0) {
		switch_goto_status(SWITCH_STATUS_MEMERR, end);
	}

	memset(context, 0, sizeof(av_file_context_t));
	handle->private_info = context;
	context->pool = handle->memory_pool;
	context->seek_ts = -1;
	context->offset = DFT_RECORD_OFFSET;
	context->handle = handle;
	context->audio_timer = 1;
	context->colorspace = avformat_globals.colorspace;
	
	if (handle->params) {
		if ((tmp = switch_event_get_header(handle->params, "av_video_offset"))) {
			context->offset = atoi(tmp);
		}
		if ((tmp = switch_event_get_header(handle->params, "video_time_audio"))) {
			if (switch_false(tmp)) {
				context->audio_timer = 0;
			}
		}
		if ((tmp = switch_event_get_header(handle->params, "colorspace"))) {
			int value = atoi(tmp);
			enum AVColorSpace colorspace = UINTVAL(value);

			if (colorspace <= AVCOL_SPC_NB) {
				context->colorspace = colorspace;
			}
		}
	}

	switch_mutex_init(&context->mutex, SWITCH_MUTEX_NESTED, handle->memory_pool);
	switch_thread_cond_create(&context->cond, handle->memory_pool);
	switch_buffer_create_dynamic(&context->audio_buffer, 512, 512, 0);

	if (!context->audio_buffer) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Could not allocate buffer for %s\n", path);
		switch_goto_status(SWITCH_STATUS_MEMERR, end);
	}

	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "sample rate: %d, channels: %d\n", handle->samplerate, handle->channels);

	if (switch_test_flag(handle, SWITCH_FILE_FLAG_READ)) {
		if (open_input_file(context, handle, path) != SWITCH_STATUS_SUCCESS) {
			//clean up;
			switch_goto_status(SWITCH_STATUS_GENERR, end);
		}

		if (context->has_video) {
			switch_fps_t fps_data = { 0 };
			switch_queue_create(&context->eh.video_queue, context->read_fps, handle->memory_pool);
			context->no_video_decode = handle->params && switch_true(switch_event_get_header(handle->params, "no_video_decode"));
			if (context->no_video_decode) {
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "Opening video in no decode mode\n");
				switch_queue_create(&context->video_pkt_queue, 120 * 5, handle->memory_pool);
			}
			switch_mutex_init(&context->eh.mutex, SWITCH_MUTEX_NESTED, handle->memory_pool);
			switch_calc_video_fps(&fps_data, context->read_fps);
			switch_core_timer_init(&context->video_timer, "soft", fps_data.ms, fps_data.samples, context->pool);
		}

		{
			switch_threadattr_t *thd_attr = NULL;

			switch_threadattr_create(&thd_attr, handle->memory_pool);
			switch_threadattr_stacksize_set(thd_attr, SWITCH_THREAD_STACKSIZE);
			switch_thread_create(&context->file_read_thread, thd_attr, file_read_thread_run, context, handle->memory_pool);
		}

		return SWITCH_STATUS_SUCCESS;
	}

	mod_avformat_alloc_output_context2(&context->fc, format, (char *)file, context);

	if (!context->fc) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Could not deduce output format from file extension\n");
		switch_goto_status(SWITCH_STATUS_GENERR, end);
	}

#if (LIBAVFORMAT_VERSION_MAJOR >= LIBAVFORMAT_V)
	fmt = context->fc->oformat;
	video_codec = fmt->video_codec;
	audio_codec = fmt->audio_codec;
#endif

	fmt = context->fc->oformat;

	if (handle->params && (tmp = switch_event_get_header(handle->params, "av_audio_codec"))) {
		if ((context->audio_codec = avcodec_find_encoder_by_name(tmp))) {
#if (LIBAVFORMAT_VERSION_MAJOR < LIBAVFORMAT_V)
			fmt->audio_codec = context->audio_codec->id;
#else
			audio_codec = context->audio_codec->id;
#endif
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "specified audio codec %s %s [%s]\n", 
							  tmp, context->audio_codec->name, context->audio_codec->long_name);

			if (!strcasecmp(tmp, "pcm_mulaw")) {
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "specified audio codec requires 8000hz\n");
				handle->mm.samplerate = 8000;
				handle->mm.ab = 64;

				if (!switch_event_get_header(handle->params, "channelsplit")) {
					switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "specified audio codec requires mono\n");
					handle->real_channels = handle->channels;
					handle->channels = 1;
					handle->mm.channels = 1;
				}
			}
		}
	}

	if (handle->params && (tmp = switch_event_get_header(handle->params, "av_video_codec"))) {
		if ((context->video_codec = avcodec_find_encoder_by_name(tmp))) {
#if (LIBAVFORMAT_VERSION_MAJOR < LIBAVFORMAT_V)
			fmt->video_codec = context->video_codec->id;
#else
			video_codec = context->video_codec->id;
#endif
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "specified video codec %s %s [%s]\n",
							  tmp, context->video_codec->name, context->video_codec->long_name);
		}
	}

	if (handle->params && (tmp = switch_event_get_header(handle->params, "rw_timeout"))) {
		context->rw_timeout = tmp;
	}
	
	if (!strcasecmp(ext, "wav") || (handle->params && switch_true(switch_event_get_header(handle->params, "av_record_audio_only")))) {
		context->has_video = 0;
		switch_clear_flag(handle, SWITCH_FILE_FLAG_VIDEO);
	}

	/* open the output file, if needed */
	if (!(fmt->flags & AVFMT_NOFILE)) {
		if (!zstr(context->rw_timeout)) {
			AVIOInterruptCB cb = {
				.callback = avio_interrupt_cb,
				.opaque = context,
			};
			
			av_dict_set(&dict, "rw_timeout", context->rw_timeout, 0);
			context->connect_start_time = switch_time_now() / 1000;
			ret = avio_open2(&context->fc->pb, file, AVIO_FLAG_WRITE, &cb, &dict);
		} else {
			ret = avio_open(&context->fc->pb, file, AVIO_FLAG_WRITE);
		}

		if (ret < 0) {
			char ebuf[255] = "";
			get_error_text(ret, ebuf, sizeof(ebuf));
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Could not open '%s': %s\n", file, ebuf);
			/* Stash the concrete open error on handle->event so the
			 * recording layer (switch_ivr_async.c send_record_error_event) can
			 * distinguish an rw_timeout (recorder-server timeout) from other open
			 * failures. handle->event is otherwise unused on this path; the
			 * recording layer consumes and destroys it. */
			if (!handle->event) {
				switch_event_create(&handle->event, SWITCH_EVENT_CLONE);
			}
			if (handle->event) {
				switch_event_add_header_string(handle->event, SWITCH_STACK_BOTTOM, "Record-Open-Error-Detail", ebuf);
				switch_event_add_header_string(handle->event, SWITCH_STACK_BOTTOM, "Record-Open-Timeout", (ret == AVERROR(ETIMEDOUT)) ? "true" : "false");
			}
			switch_goto_status(SWITCH_STATUS_GENERR, end);
		}
	} else {
		avformat_network_init();
	}

	if (handle->mm.samplerate) {
		handle->samplerate = handle->mm.samplerate;
	} else {
		handle->mm.samplerate = handle->samplerate;
	}

	if (!handle->mm.ab) {
		handle->mm.ab = 128;
	}

	if (!handle->mm.vb) {
		handle->mm.vb = switch_calc_bitrate(handle->mm.vw, handle->mm.vh, 1, handle->mm.fps);
	}

#if (LIBAVFORMAT_VERSION_MAJOR < LIBAVFORMAT_V)
	if (switch_test_flag(handle, SWITCH_FILE_FLAG_VIDEO) && fmt->video_codec != AV_CODEC_ID_NONE) {
#else
	if (switch_test_flag(handle, SWITCH_FILE_FLAG_VIDEO) && video_codec != AV_CODEC_ID_NONE) {
#endif
		const AVCodecDescriptor *desc;

		if ((handle->stream_name && (!strcasecmp(handle->stream_name, "rtmp") || !strcasecmp(handle->stream_name, "rtmps") || !strcasecmp(handle->stream_name, "youtube")))) {
#if (LIBAVFORMAT_VERSION_MAJOR < LIBAVFORMAT_V)
			if (fmt->video_codec != AV_CODEC_ID_H264 ) {
				fmt->video_codec = AV_CODEC_ID_H264; // force H264
#else
			if (video_codec != AV_CODEC_ID_H264 ) {
				video_codec = AV_CODEC_ID_H264; // force H264
#endif
			}

#if (LIBAVFORMAT_VERSION_MAJOR < LIBAVFORMAT_V)
			fmt->audio_codec = AV_CODEC_ID_AAC;
#else
			audio_codec = AV_CODEC_ID_AAC;
#endif
			handle->samplerate = 44100;
			handle->mm.samplerate = 44100;
			handle->mm.ab = 128;
			handle->mm.cbr = 1;
			handle->mm.vencspd = SWITCH_VIDEO_ENCODE_SPEED_FAST;
			handle->mm.vprofile = SWITCH_VIDEO_PROFILE_BASELINE;

			if (!handle->mm.vb && handle->mm.vw && handle->mm.vh) {
				switch(handle->mm.vh) {
				case 240:
					handle->mm.vb = 400;
					break;
				case 360:
					handle->mm.vb = 750;
					break;
				case 480:
					handle->mm.vb = 1000;
					break;
				case 720:
					handle->mm.vb = 2500;
					break;
				case 1080:
					handle->mm.vb = 4500;
					break;
				default:
					handle->mm.vb = switch_calc_bitrate(handle->mm.vw, handle->mm.vh, 1, handle->mm.fps);
					break;
				}
			}

			if (handle->mm.fps > 0.0f) {
				handle->mm.keyint = (int) 2.0f * handle->mm.fps;
			}
		}

#if (LIBAVFORMAT_VERSION_MAJOR < LIBAVFORMAT_V)
		desc = avcodec_descriptor_get(fmt->video_codec);

		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "use video codec: [%d] %s (%s)\n", fmt->video_codec, desc->name, desc->long_name);
#else
		desc = avcodec_descriptor_get(video_codec);
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "use video codec: [%d] %s (%s)\n", video_codec, desc->name, desc->long_name);
#endif
	}

#if (LIBAVFORMAT_VERSION_MAJOR < LIBAVFORMAT_V)
	if (fmt->audio_codec != AV_CODEC_ID_NONE) {
#else
	if (audio_codec != AV_CODEC_ID_NONE) {
#endif
		const char *issplit = 0;

		context->audio_st[0].channels = handle->channels;
		context->audio_st[1].sample_rate = handle->samplerate;

		if (handle->channels > 1 && handle->params && (issplit = switch_event_get_header(handle->params, "channelsplit"))) {
			int lr = (!strcasecmp(issplit, "lr") || switch_true(issplit));
			int rl = !strcasecmp(issplit, "rl");
			
			if (lr || rl) {
				context->audio_st[0].channels = 1;
				context->audio_st[1].channels = 1;
#if (LIBAVFORMAT_VERSION_MAJOR < LIBAVFORMAT_V)
				add_stream(context, &context->audio_st[0], context->fc, &context->audio_codec, fmt->audio_codec, &handle->mm);
				add_stream(context, &context->audio_st[1], context->fc, &context->audio_codec, fmt->audio_codec, &handle->mm);
#else
				add_stream(context, &context->audio_st[0], context->fc, &context->audio_codec, audio_codec, &handle->mm);
				add_stream(context, &context->audio_st[1], context->fc, &context->audio_codec, audio_codec, &handle->mm);
#endif
			}

			if (lr) {
				context->audio_st[0].r = 1;
			} else if (rl) {
				context->audio_st[1].r = 1;
			}
		}

		if (!context->audio_st[0].active) {
#if (LIBAVFORMAT_VERSION_MAJOR < LIBAVFORMAT_V)
			add_stream(context, &context->audio_st[0], context->fc, &context->audio_codec, fmt->audio_codec, &handle->mm);
#else
			add_stream(context, &context->audio_st[0], context->fc, &context->audio_codec, audio_codec, &handle->mm);
#endif
		}

		if (open_audio(context->fc, context->audio_codec, &context->audio_st[0]) != SWITCH_STATUS_SUCCESS) {
			switch_goto_status(SWITCH_STATUS_GENERR, end);
		}

		context->has_audio = 1;

		if (context->audio_st[1].active) {
			if (open_audio(context->fc, context->audio_codec, &context->audio_st[1]) != SWITCH_STATUS_SUCCESS) {
				switch_goto_status(SWITCH_STATUS_GENERR, end);
			}

			context->has_audio++;
		}
	}

	av_dump_format(context->fc, 0, file, 1);

	handle->format = 0;
	handle->sections = 0;
	handle->seekable = 0;
	handle->speed = 0;
	handle->pos = 0;

	if (disable_write_buffer) {
		handle->pre_buffer_datalen = 0;
	}

	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "Opening File [%s] %dhz %s\n",
		file, handle->samplerate, context->has_video ? " with VIDEO" : "");

	return SWITCH_STATUS_SUCCESS;

 end:

	if (!context) {
		return status;
	}

	if (context->fc) {
		mod_avformat_destroy_output_context(context);
	}

	if (context->video_timer.interval) {
		switch_core_timer_destroy(&context->video_timer);
	}

	if (context->audio_buffer) {
		switch_buffer_destroy(&context->audio_buffer);
	}

	if (dict) {
		av_dict_free(&dict);
	}

	return status;
}

static switch_status_t av_file_truncate(switch_file_handle_t *handle, int64_t offset)
{
	return SWITCH_STATUS_FALSE;
}


static switch_status_t av_file_write(switch_file_handle_t *handle, void *data, size_t *len)
{
	uint32_t datalen = 0;
	switch_status_t status = SWITCH_STATUS_SUCCESS;
	// uint8_t buf[SWITCH_RECOMMENDED_BUFFER_SIZE] = { 0 }, *bp = buf;
	// uint32_t encoded_rate;
	av_file_context_t *context = (av_file_context_t *)handle->private_info;
	// uint32_t size = 0;
	uint32_t bytes;
	int inuse;
	int sample_start = 0;
	AVCodecContext *c = NULL;

	if (!switch_test_flag(handle, SWITCH_FILE_FLAG_WRITE)) {
		return SWITCH_STATUS_FALSE;
	}

	if (!context->has_audio) {
		return SWITCH_STATUS_SUCCESS;
	}

	if (!context->vid_ready) {
		if (switch_test_flag(handle, SWITCH_FILE_FLAG_VIDEO)) {
			switch_buffer_zero(context->audio_buffer);
			return status;
		} else if (!context->aud_ready) { // audio only recording
			int ret = avformat_write_header(context->fc, NULL);
			if (ret < 0) {
				char ebuf[255] = "";
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Error occurred when opening output file: %s\n", get_error_text(ret, ebuf, sizeof(ebuf)));
				return SWITCH_STATUS_FALSE;
			}
			context->aud_ready = 1;
		}
	}

	if (data && len) {
		datalen = *len * 2 * handle->channels;

		if (context->offset) {
			switch_size_t samples = *len;
			int fps = handle->samplerate / samples;
			int lead_frames = (context->offset * fps) / 1000;

			for (int x = 0; x < lead_frames; x++) {
				switch_buffer_zero_fill(context->audio_buffer, datalen);
			}
			context->offset = 0;
		}

		switch_buffer_write(context->audio_buffer, data, datalen);
	}

	bytes = context->audio_st[0].frame->nb_samples * 2 * context->handle->channels; //context->audio_st[0].st->codec->channels;

	//{
	//	int inuse = switch_buffer_inuse(context->audio_buffer);
	//	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "inuse: %d samples: %d bytes: %d\n", inuse, context->audio_st[0].frame->nb_samples, bytes);
	//}

	if (context->closed) {
		inuse = switch_buffer_inuse(context->audio_buffer);
		if (inuse < bytes) {
			switch_buffer_zero_fill(context->audio_buffer, bytes - inuse);
		}
	}


	 if (context->video_timer.interval) {
		 int delta;
		 switch_core_timer_sync(&context->video_timer);

		 delta = context->video_timer.samplecount - context->last_vid_write;

		 if (context->audio_timer || delta >= 200) {
			 uint32_t new_pts = context->video_timer.samplecount * (handle->samplerate / 1000);
			 if (!context->audio_timer) {
				 switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Delta of %d detected.  Video timer sync: %" SWITCH_UINT64_T_FMT "/%d %" SWITCH_UINT64_T_FMT "\n", delta, context->audio_st[0].next_pts, context->video_timer.samplecount, new_pts - context->audio_st[0].next_pts);
			 }
			 sample_start = new_pts;
		 }
		 
		 context->last_vid_write = context->video_timer.samplecount;		 
	 }

	 
	 if (sample_start) {
		 int j = 0;
		 
		 for (j = 0; j < 2; j++) {
			 if (context->audio_st[j].active) {
				 context->audio_st[j].next_pts = sample_start;
			 }
		 }
	 }
 
	while (switch_buffer_inuse(context->audio_buffer) >= bytes) {
		AVPacket *pkt[2];
#if (LIBAVCODEC_VERSION_MAJOR < LIBAVCODEC_V)
		int got_packet[2] = {0};
		int result[2] = {0};
#else
		int dret = -1;
#endif
		int j = 0, ret = -1, audio_stream_count = 1;
		AVFrame *use_frame = NULL;

		pkt[0] = av_packet_alloc();
		pkt[1] = av_packet_alloc();

		if (context->audio_st[1].active) {
			switch_size_t len = 0;
			int i = 0, j = 0;
			int l = 0, r = 1;

			if (!context->mux_buf || context->mux_buf_len < bytes / 2) {
				context->mux_buf_len = bytes / 2;
				context->mux_buf = (int16_t *)realloc((void *)context->mux_buf, context->mux_buf_len * 2);
			}

			audio_stream_count = 2;
			len = switch_buffer_read(context->audio_buffer, (uint8_t *)context->mux_buf, bytes);

			if (context->audio_st[0].r) {
				l = 1;
				r = 0;
			}

			for (i = 0; i < len / 4; i++) {
				*((int16_t *)context->audio_st[l].frame->data[0] + i) = context->mux_buf[j++];
				*((int16_t *)context->audio_st[r].frame->data[0] + i) = context->mux_buf[j++];
			}
		} else {
 			switch_buffer_read(context->audio_buffer, context->audio_st[0].frame->data[0], bytes);
		}

		for (j = 0; j < audio_stream_count; j++) {
			
			av_frame_make_writable(context->audio_st[j].frame);
			use_frame = context->audio_st[j].frame;

			if (context->audio_st[j].resample_ctx) {
				int out_samples = swr_get_out_samples(context->audio_st[j].resample_ctx, context->audio_st[j].frame->nb_samples);
				
				av_frame_make_writable(context->audio_st[j].tmp_frame);
				
				/* convert to destination format */
				ret = swr_convert(context->audio_st[j].resample_ctx,
										context->audio_st[j].tmp_frame->data, out_samples,
										(const uint8_t **)context->audio_st[j].frame->data, context->audio_st[j].frame->nb_samples);
				
				if (ret < 0) {
					char ebuf[255] = "";
					switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Error while converting %d samples, error text: %s\n",
									context->audio_st[j].frame->nb_samples, get_error_text(ret, ebuf, sizeof(ebuf)));
					continue;
				}

				use_frame = context->audio_st[j].tmp_frame;
			}

			use_frame->pts = context->audio_st[j].next_pts;

			// context->audio_st[j].next_pts = use_frame->pts + use_frame->nb_samples;

			if (!(c = av_get_codec_context(&context->audio_st[j]))) {
				continue;
			}

#if (LIBAVCODEC_VERSION_MAJOR < LIBAVCODEC_V)
GCC_DIAG_OFF(deprecated-declarations)
			result[j] = avcodec_encode_audio2(c, pkt[j], use_frame, &got_packet[j]);
GCC_DIAG_ON(deprecated-declarations)
#else
			dret = avcodec_send_frame(c, use_frame);

			if (dret == AVERROR_EOF) {
				dret = 0;
			} else if (dret == AVERROR(EAGAIN)) {
				/* we fully drain all the output in each decode call, so this should not ever happen */
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG9, "Encoding error for channel %d on sending frame to encode - BUG, should never happen\n", j);
				dret = AVERROR_BUG;
			} else if (dret < 0) {
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Encoding error for channel %d on sending frame to encode\n", j);
			}

			while (dret >= 0) {
				dret = avcodec_receive_packet(c, pkt[j]);
				if (dret == AVERROR(EAGAIN)) {
					switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG9, "No more audio packets at the moment for channel %d\n", j);
					break;
				} else if (dret == AVERROR_EOF) {
					switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG9, "No more audio packets at all for channel %d\n", j);
					break;
				} else if (dret < 0) {
					switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Encoding error for channel %d\n", j);
					break;
				}

				if (context->mutex) switch_mutex_lock(context->mutex);

				ret = write_frame(context->fc, &c->time_base, context->audio_st[j].st, pkt[j]);

				if (context->mutex) switch_mutex_unlock(context->mutex);

				if (ret < 0) {
					context->errs++;
					if ((context->errs % 10) == 0) {
						char ebuf[255] = "";

						switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "[%s] Error while writing audio frame: %d %s\n", 
							handle->file_path ? handle->file_path : "unknown", ret, get_error_text(ret, ebuf, sizeof(ebuf)));
						if ((ret == -5 || ret == -104) && handle->stream_name) {
							context->errs = 1001;
						}
					}
					//switch_goto_status(SWITCH_STATUS_FALSE, end);
				} else {
					context->errs = 0;
				}

				if (context->errs > 1000) {
					av_packet_free(&pkt[0]);
					av_packet_free(&pkt[1]);
					switch_goto_status(SWITCH_STATUS_FALSE, end);
				}
			}
#endif
			context->audio_st[j].next_pts += use_frame->nb_samples;
	}

#if (LIBAVCODEC_VERSION_MAJOR < LIBAVCODEC_V)
		if (result[0] < 0 || result[1] < 0) {
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Error encoding audio frame: %d %d \n", result[0], result[1]);
			av_packet_free(&pkt[0]);
			av_packet_free(&pkt[1]);
			continue;
		}

		for (j = 0; j < audio_stream_count; j++) {
			if (got_packet[j]) {
				if (context->mutex) switch_mutex_lock(context->mutex);

				if (!(c = av_get_codec_context(&context->audio_st[j]))) {
					if (context->mutex) switch_mutex_unlock(context->mutex);
					continue;
				}

				ret = write_frame(context->fc, &c->time_base, context->audio_st[j].st, pkt[j]);

				if (context->mutex) switch_mutex_unlock(context->mutex);

				if (ret < 0) {
					context->errs++;
					if ((context->errs % 10) == 0) {
						char ebuf[255] = "";
						switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "[%s] Error while writing audio frame: %s\n", 
							handle->file_path ? handle->file_path : "unknown", get_error_text(ret, ebuf, sizeof(ebuf)));
					}
					
					if(ret == -(ETIMEDOUT)) {
						context->closed = 1;
						switch_goto_status(SWITCH_STATUS_FALSE, end);
					}
				} else {
					context->errs = 0;
				}

				if (context->errs > 1000) {
					status = SWITCH_STATUS_FALSE;
					goto end;
				}
			}
		}
#endif

		av_packet_free(&pkt[0]);
		av_packet_free(&pkt[1]);
	}

 end:

	return status;
}

static switch_status_t av_file_command(switch_file_handle_t *handle, switch_file_command_t command)
{
	av_file_context_t *context = (av_file_context_t *)handle->private_info;
	uint32_t offset = 0;

	switch(command) {
	case SCFC_FLUSH_AUDIO:
		switch_mutex_lock(context->mutex);
		switch_buffer_zero(context->audio_buffer);
		switch_mutex_unlock(context->mutex);
		break;
	case SCFC_PAUSE_READ:
		if (context->read_paused) {
			context->read_paused = SWITCH_FALSE;
			context->video_st.next_pts = 0;
			context->video_start_time = 0;
		} else {
			context->read_paused = SWITCH_TRUE;
		}
		break;
	case SCFC_PAUSE_WRITE:
		context->vid_ready = 0;
		context->eh.record_timer_paused = switch_micro_time_now();
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "%s pause write\n", handle->file_path);
		break;
	case SCFC_RESUME_WRITE:
		if (context->eh.record_timer_paused) {
			context->eh.last_ts = 0;
			offset = (uint32_t)(switch_micro_time_now() - context->eh.record_timer_paused);
			context->video_timer.start += offset;
			switch_core_timer_sync(&context->video_timer);
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "%s resume write\n", handle->file_path);
			context->eh.record_timer_paused = 0;
		}
		break;
	default:
		break;
	}

	return SWITCH_STATUS_SUCCESS;
}

static switch_status_t av_file_close(switch_file_handle_t *handle)
{
	av_file_context_t *context = (av_file_context_t *)handle->private_info;
	switch_status_t status;

	context->closed = 1;
	context->eh.finalize = 1;

	if (context->eh.video_queue) {
		if (!switch_test_flag(handle, SWITCH_FILE_FLAG_WRITE)) {
			flush_video_queue(context->eh.video_queue, 0);
			switch_queue_push(context->eh.video_queue, NULL);
			switch_queue_term(context->eh.video_queue);
		} else {
			switch_queue_push(context->eh.video_queue, NULL);
		}
	}

	if (context->eh.video_thread) {
		switch_thread_join(&status, context->eh.video_thread);
	}

	if (switch_test_flag(handle, SWITCH_FILE_FLAG_WRITE)) {
		av_file_write(handle, NULL, NULL);
	}

	if (context->file_read_thread_running) {
		context->file_read_thread_running = 0;
	}

	if (context->video_pkt_queue) {
		flush_video_pkt_queue(context->video_pkt_queue);
		switch_queue_term(context->video_pkt_queue);
	}

	if (context->packetizer) {
		switch_packetizer_close(&context->packetizer);
	}

	if (context->file_read_thread) {
		switch_thread_join(&status, context->file_read_thread);
		context->file_read_thread = NULL;
	}

	if (context->eh.video_queue) {
		flush_video_queue(context->eh.video_queue, 0);
	}

	if (context->fc) {
		if ((context->aud_ready || context->has_video) && switch_test_flag(handle, SWITCH_FILE_FLAG_WRITE)) {
			av_write_trailer(context->fc);
		}

		mod_avformat_destroy_output_context(context);
	}

	if (context->video_timer.interval) {
		switch_core_timer_destroy(&context->video_timer);
	}

	switch_img_free(&context->last_img);

	switch_buffer_destroy(&context->audio_buffer);

	switch_safe_free(context->mux_buf);

	return SWITCH_STATUS_SUCCESS;
}

static switch_status_t av_file_seek(switch_file_handle_t *handle, unsigned int *cur_sample, int64_t samples, int whence)
{
	av_file_context_t *context = (av_file_context_t *)handle->private_info;

	if (whence == SEEK_SET) {
		handle->pos = handle->offset_pos = samples;
	}

	context->seek_ts = samples / handle->native_rate * AV_TIME_BASE;
	*cur_sample = context->seek_ts;

	context->closed = 0;

	if (!context->file_read_thread_running) {
		switch_threadattr_t *thd_attr = NULL;

		if (context->file_read_thread) {
			switch_status_t status;
			switch_thread_join(&status, context->file_read_thread);
			context->file_read_thread = NULL;
		}

		switch_threadattr_create(&thd_attr, handle->memory_pool);
		switch_threadattr_stacksize_set(thd_attr, SWITCH_THREAD_STACKSIZE);
		switch_thread_create(&context->file_read_thread, thd_attr, file_read_thread_run, context, handle->memory_pool);
	}

	return SWITCH_STATUS_FALSE;
}

static switch_status_t av_file_read(switch_file_handle_t *handle, void *data, size_t *len)
{
	av_file_context_t *context = (av_file_context_t *)handle->private_info;
	int size;
	size_t need = *len * 2 * context->audio_st[0].channels;

	if (!context->has_audio && context->has_video && context->file_read_thread_running) {
		memset(data, 0, *len * handle->channels * 2);
		return SWITCH_STATUS_SUCCESS;
	}

	switch_mutex_lock(context->mutex);

	while (!context->file_read_thread_started) {
		switch_thread_cond_wait(context->cond, context->mutex);
	}
	switch_mutex_unlock(context->mutex);

	if (context->closed || (!context->file_read_thread_running && switch_buffer_inuse(context->audio_buffer) == 0)) {
		*len = 0;
		return SWITCH_STATUS_FALSE;
	}

	while (context->has_video && !context->vid_ready && !context->closed) {
		switch_yield(1000);
	}

	switch_mutex_lock(context->mutex);
	size = switch_buffer_read(context->audio_buffer, data, need);
	switch_mutex_unlock(context->mutex);

	if (size == 0) {
		size_t blank = (handle->samplerate / 20) * 2 * handle->real_channels;

		if (need > blank) {
			need = blank;
		}
		memset(data, 0, need);
		*len = need / 2 / handle->real_channels;
	} else {
		*len = size / context->audio_st[0].channels / 2;
	}

	handle->pos += *len;
	handle->sample_count += *len;

	return *len == 0 ? SWITCH_STATUS_FALSE : SWITCH_STATUS_SUCCESS;
}


#ifdef ALT_WAY
static switch_status_t av_file_read_video(switch_file_handle_t *handle, switch_frame_t *frame, switch_video_read_flag_t flags)
{
	void *pop;
	av_file_context_t *context = (av_file_context_t *)handle->private_info;
	switch_status_t status;


	if (!context->has_video || context->closed) return SWITCH_STATUS_FALSE;
	if ((flags & SVR_CHECK)) {
		return SWITCH_STATUS_BREAK;
	}

	if ((flags & SVR_FLUSH)) {
		flush_video_queue(context->eh.video_queue, 1);
	}

	if ((flags & SVR_BLOCK)) {
		status = switch_queue_pop(context->eh.video_queue, &pop);
	} else {
		status = switch_queue_trypop(context->eh.video_queue, &pop);
	}

	if (status == SWITCH_STATUS_SUCCESS) {
		if (!pop) {
			return SWITCH_STATUS_FALSE;
		}

		context->vid_ready = 1;

		frame->img = (switch_image_t *) pop;

		if (frame->img) {
			if (frame->img && context->handle->mm.scale_w && context->handle->mm.scale_h) {
				if (frame->img->d_w != context->handle->mm.scale_w || frame->img->d_h != context->handle->mm.scale_h) {
					switch_img_fit(&frame->img, context->handle->mm.scale_w, context->handle->mm.scale_h, SWITCH_FIT_SIZE);
				}
			}
			context->vid_ready = 1;
		}		

		return SWITCH_STATUS_SUCCESS;
	}

	return (flags & SVR_FLUSH) ? SWITCH_STATUS_BREAK : status;
}
#else

static switch_status_t no_video_decode_packets(switch_file_handle_t *handle, switch_frame_t *frame, switch_video_read_flag_t flags)
{
	av_file_context_t *context = (av_file_context_t *)handle->private_info;
	MediaStream *mst = &context->video_st;
	AVStream *st = mst->st;
	// AVCodecContext *ctx = st->codec;
	// int ticks = 0;
	// int64_t max_delta = 1 * AV_TIME_BASE; // 1 second
	switch_status_t status = SWITCH_STATUS_SUCCESS;
	AVPacket *pkt;
	int64_t pts;


	if (!context->packetizer) {
		// uint8_t *p = st->codecpar->extradata;
		// switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "size = %u %x %x %x %x %x %x\n", st->codecpar->extradata_size, *p, *(p+1), *(p+2), *(p+3), *(p+4), *(p+5));

		context->packetizer = switch_packetizer_create(SPT_H264_SIZED_BITSTREAM, SLICE_SIZE);
		if (!context->packetizer) return SWITCH_STATUS_FALSE;

		switch_packetizer_feed_extradata(context->packetizer, st->codecpar->extradata, st->codecpar->extradata_size);
	}

	if (context->last_read_pkt) {
		status = switch_packetizer_read(context->packetizer, frame);
		if (status == SWITCH_STATUS_SUCCESS) {
			av_packet_free(&context->last_read_pkt);
			context->last_read_pkt = NULL;
		}

		return status;
	}

	status = switch_queue_trypop(context->video_pkt_queue, (void **)&pkt);

	if (status != SWITCH_STATUS_SUCCESS || !pkt) {
		switch_cond_next();

		return SWITCH_STATUS_BREAK;
	}

	context->last_read_pkt = pkt;
	switch_packetizer_feed(context->packetizer, pkt->data, pkt->size);
	status = switch_packetizer_read(context->packetizer, frame);
	pts = av_rescale_q(pkt->pts, st->time_base, AV_TIME_BASE_Q);
	frame->timestamp = pts * 9 / 100; // scale to sample 900000
	// switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "pts=%" SWITCH_INT64_T_FMT " status = %d\n", pts, status);

	if (status == SWITCH_STATUS_SUCCESS) {
		av_packet_free(&context->last_read_pkt);
		context->last_read_pkt = NULL;
	}

	if (status == SWITCH_STATUS_SUCCESS || status == SWITCH_STATUS_MORE_DATA) {
		if (!context->video_start_time) {
			context->video_start_time = switch_time_now() - pts;
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "set start time: %" SWITCH_INT64_T_FMT " now: %" SWITCH_INT64_T_FMT " pts: %" SWITCH_INT64_T_FMT "\n", context->video_start_time, switch_time_now(), pts);
		} else if (flags & SVR_BLOCK) {
			int64_t sleep = pts - (switch_time_now() - context->video_start_time);
			if (sleep > 0) {
				// switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "zzZ... %" SWITCH_INT64_T_FMT "\n", sleep);
				if (sleep > 1000000) {
					sleep = 1000000;
					switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "but zzZ... %" SWITCH_INT64_T_FMT " at most\n", sleep);
				}
				switch_yield(sleep);
			} else {
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "video is late %" SWITCH_INT64_T_FMT "\n", sleep);
			}
		}
	}

	return status;
}

static switch_status_t av_file_read_video(switch_file_handle_t *handle, switch_frame_t *frame, switch_video_read_flag_t flags)
{
	av_file_context_t *context = (av_file_context_t *)handle->private_info;
	void *pop;
	MediaStream *mst = &context->video_st;
	AVStream *st = mst->st;
	int ticks = 0;
	int64_t max_delta = 1 * AV_TIME_BASE; // 1 second
	switch_status_t status = SWITCH_STATUS_SUCCESS;
	double fl_to = 0.02;
	int do_fl = 0;
	int smaller_ts = context->read_fps;
	AVCodecContext *c = NULL;
	AVCodecParserContext *cp = NULL;

	if (!context->has_video) return SWITCH_STATUS_FALSE;

	if ((flags & SVR_CHECK)) {
		return SWITCH_STATUS_BREAK;
	}

	if (context->no_video_decode) {
		switch_set_flag(frame, SFF_ENCODED);
		status = no_video_decode_packets(handle, frame, flags);
		// switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "return len=%4u nalu=%02x m=%d ts=%u\n", frame->datalen, *(uint8_t *)frame->data, frame->m, frame->timestamp);
		return status;
	}

	if (handle->mm.fps > 0 && handle->mm.fps < smaller_ts) {
		smaller_ts = handle->mm.fps;
	}

	fl_to = (1000 / smaller_ts) * 1000;
	//printf("WTF %d (%f)\n",switch_queue_size(context->eh.video_queue), fl_to);
	if (flags & SVR_FLUSH) {
		max_delta = fl_to;
		do_fl = 1;
	}

	if (!context->file_read_thread_running && switch_queue_size(context->eh.video_queue) == 0) {
		return SWITCH_STATUS_FALSE;
	}

	if (context->read_paused || context->seek_ts == -2) {
		int sanity = 10;

		if (context->seek_ts == -2) { // just seeked, try read a new img
		again1:
			status = switch_queue_trypop(context->eh.video_queue, &pop);
			if (pop && status == SWITCH_STATUS_SUCCESS) {
				context->seek_ts = -1;
				switch_img_free(&context->last_img);
				context->last_img = (switch_image_t *)pop;
				switch_img_copy(context->last_img, &frame->img);
				context->vid_ready = 1;
				goto resize_check;
			}

			if (context->last_img) { // repeat the last img
				switch_img_copy(context->last_img, &frame->img);
				context->vid_ready = 1;
				context->seek_ts = -1;
				goto resize_check;
			}

			if ((flags & SVR_BLOCK) && sanity-- > 0) {
				switch_yield(10000);
				goto again1;
			}

			return SWITCH_STATUS_BREAK;
		}

		if (context->last_img) { // repeat the last img
			if ((flags & SVR_BLOCK)) switch_yield(100000);
			switch_img_copy(context->last_img, &frame->img);
			context->vid_ready = 1;
			goto resize_check;
		}

		if ((flags & SVR_BLOCK)) {
			status = switch_queue_pop(context->eh.video_queue, &pop);
		} else {
			status = switch_queue_trypop(context->eh.video_queue, &pop);
		}

		if (pop && status == SWITCH_STATUS_SUCCESS) {
			switch_img_free(&context->last_img);
			context->last_img = (switch_image_t *)pop;
			switch_img_copy(context->last_img, &frame->img);
			context->vid_ready = 1;
			goto resize_check;
		}

		return SWITCH_STATUS_BREAK;
	}

#if 0
	if (context->last_img) {
		if (mst->next_pts && (switch_time_now() - mst->next_pts > max_delta)) {
			switch_img_free(&context->last_img); // too late
		} else if (mst->next_pts && (switch_time_now() - mst->next_pts > -10000)) {
			frame->img = context->last_img;
			context->last_img = NULL;
			context->vid_ready = 1;
			return SWITCH_STATUS_SUCCESS;
		}

		if (!(flags & SVR_BLOCK) && !do_fl) {
			if (!mst->next_pts) {
				frame->img = context->last_img;
				context->last_img = NULL;
				context->vid_ready = 1;
				return SWITCH_STATUS_SUCCESS;
			}

			return SWITCH_STATUS_BREAK;
		}
	}
#endif

	if ((c = av_get_codec_context(mst)) && c->time_base.num) {
		cp = av_stream_get_parser(st);
		ticks = cp ? cp->repeat_pict + 1 : c->ticks_per_frame;
		// mst->next_pts += ((int64_t)AV_TIME_BASE * st->codec->time_base.num * ticks) / st->codec->time_base.den;
	}

	if (!context->video_start_time) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG1, "start: %" SWITCH_INT64_T_FMT " ticks: %d ticks_per_frame: %d st num:%d st den:%d codec num:%d codec den:%d start: %" SWITCH_TIME_T_FMT ", duration:%" SWITCH_INT64_T_FMT " nb_frames:%" SWITCH_INT64_T_FMT " q2d:%f\n",
			context->video_start_time, ticks, c ? c->ticks_per_frame : -1, st->time_base.num, st->time_base.den, c ? c->time_base.num : -1, c ? c->time_base.den : -1,
			st->start_time, st->duration == AV_NOPTS_VALUE ? context->fc->duration / AV_TIME_BASE * 1000 : st->duration, st->nb_frames, av_q2d(st->time_base));
	}

 again:

	if (context->last_img) {
		pop = (void *) context->last_img;
		context->last_img = NULL;
		status = SWITCH_STATUS_SUCCESS;
	} else {
		if ((flags & SVR_BLOCK)) {
			status = switch_queue_pop(context->eh.video_queue, &pop);
		} else {
			status = switch_queue_trypop(context->eh.video_queue, &pop);
		}
	}

	if (pop && status == SWITCH_STATUS_SUCCESS) {
		switch_image_t *img = (switch_image_t *)pop;
		int64_t pts;
		int64_t now = switch_time_now();

		pts = av_rescale_q(*((uint64_t *)img->user_priv), st->time_base, AV_TIME_BASE_Q);
		// switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "pkt_pts: %lld pts: %lld queue size: %u\n", *((uint64_t *)img->user_priv), pts, switch_queue_size(context->eh.video_queue));
		handle->vpos = pts;

		if (!context->video_start_time) {
			context->video_start_time = now - pts;
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "set start time: %" SWITCH_INT64_T_FMT " now: %" SWITCH_INT64_T_FMT " pts: %" SWITCH_INT64_T_FMT "\n", context->video_start_time, now, pts);
		}

		if (st->time_base.num == 0) {
			mst->next_pts = 0;
		} else {
			// int64_t last_pts = mst->next_pts;
			mst->next_pts = context->video_start_time + pts;
			// switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "pts: %" SWITCH_INT64_T_FMT " last_pts: %" SWITCH_INT64_T_FMT " delta: %" SWITCH_INT64_T_FMT " frame_pts: %" SWITCH_INT64_T_FMT " nextpts: %" SWITCH_INT64_T_FMT ", num: %d, den:%d num:%d den:%d sleep: %" SWITCH_INT64_T_FMT "\n",
			// pts, last_pts, mst->next_pts - last_pts, *((uint64_t *)img->user_priv), mst->next_pts, st->time_base.num, st->time_base.den, st->codec->time_base.num, st->codec->time_base.den, mst->next_pts - now);
		}

		if (pts == 0 || context->video_start_time == 0) mst->next_pts = 0;

		if ((mst->next_pts && (now - mst->next_pts) > max_delta)) {
			//switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "picture is too late, off: %" SWITCH_INT64_T_FMT " max delta: %" SWITCH_INT64_T_FMT " queue size:%u fps:%u/%0.2f\n", (int64_t)(now - mst->next_pts), max_delta, switch_queue_size(context->eh.video_queue), context->read_fps, handle->mm.fps);
			switch_img_free(&img);
			//max_delta = AV_TIME_BASE;

			if (switch_queue_size(context->eh.video_queue) > 0) {
				// switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "WTF again\n");
				goto again;
			} else if (!(flags & SVR_BLOCK) && !do_fl) {
				mst->next_pts = 0;
				context->video_start_time = 0;
				return SWITCH_STATUS_BREAK;
			}
		}

		if ((flags & SVR_BLOCK)) {
			while (switch_micro_time_now() - mst->next_pts < -10000) {
				// switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "yield, delta=%" SWITCH_INT64_T_FMT "\n", switch_micro_time_now() - mst->next_pts);
				switch_yield(1000);
			}
			frame->img = img;
		} else {
			if (switch_micro_time_now() - mst->next_pts > -10000) {
				frame->img = img;
			} else {
				switch_img_free(&context->last_img);
				context->last_img = img;
				return SWITCH_STATUS_BREAK;
			}
		}

	} else {
		return SWITCH_STATUS_BREAK;
	}

 resize_check:
	
	if (frame->img) {
		if (context->handle->mm.scale_w && context->handle->mm.scale_h) {
			if (frame->img->d_w != context->handle->mm.scale_w || frame->img->d_h != context->handle->mm.scale_h) {
				switch_img_fit(&frame->img, context->handle->mm.scale_w, context->handle->mm.scale_h, SWITCH_FIT_SCALE);
			}
		}
		context->vid_ready = 1;
	}

	if ((flags & SVR_BLOCK)) {
		if (!frame->img) context->closed = 1;
		return frame->img ? SWITCH_STATUS_SUCCESS : SWITCH_STATUS_FALSE;
	} else {
		return frame->img ? SWITCH_STATUS_SUCCESS : SWITCH_STATUS_BREAK;
	}
}
#endif

static switch_status_t av_file_write_video(switch_file_handle_t *handle, switch_frame_t *frame)
{
	switch_status_t status = SWITCH_STATUS_SUCCESS;
	av_file_context_t *context = (av_file_context_t *)handle->private_info;
	switch_image_t *img = NULL;
	AVCodecContext *c = NULL;

	if (!switch_test_flag(handle, SWITCH_FILE_FLAG_VIDEO)) {
		return SWITCH_STATUS_FALSE;
	}

	if (!frame->img) {
		switch_goto_status(SWITCH_STATUS_FALSE, end);
	}

	if (!context->has_video) {
		context->video_st.width = frame->img->d_w;
		context->video_st.height = frame->img->d_h;
		context->video_st.next_pts = switch_time_now() / 1000;
		if (add_stream(context, &context->video_st, context->fc, &context->video_codec, context->fc->oformat->video_codec, &handle->mm) == SWITCH_STATUS_SUCCESS &&
			open_video(context->fc, context->video_codec, &context->video_st) == SWITCH_STATUS_SUCCESS) {

			char codec_str[256] = "";
			int ret;

			if ((c = av_get_codec_context(&context->video_st))) {
				avcodec_string(codec_str, sizeof(codec_str), c, 1);
			}

			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "use video codec implementation %s\n", codec_str);
			context->has_video = 1;

			// av_dump_format(context->fc, 0, "/tmp/av.mp4", 1);

			ret = avformat_write_header(context->fc, NULL);
			if (ret < 0) {
				char ebuf[255] = "";
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Error occurred when opening output file: %s\n", get_error_text(ret, ebuf, sizeof(ebuf)));
				switch_goto_status(SWITCH_STATUS_FALSE, end);
			}

		} else {
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Error adding video stream\n");
			switch_goto_status(SWITCH_STATUS_FALSE, end);
		}
	}

	if (!context->eh.video_thread) {
		switch_threadattr_t *thd_attr = NULL;
		
		switch_mutex_init(&context->mutex, SWITCH_MUTEX_NESTED, handle->memory_pool);
		context->eh.mutex = context->mutex;
		context->eh.video_st = &context->video_st;
		context->eh.fc = context->fc;
		context->eh.mm = &handle->mm;
		switch_queue_create(&context->eh.video_queue, SWITCH_CORE_QUEUE_LEN, handle->memory_pool);
		switch_threadattr_create(&thd_attr, handle->memory_pool);
		//switch_threadattr_priority_set(thd_attr, SWITCH_PRI_REALTIME);
		switch_threadattr_stacksize_set(thd_attr, SWITCH_THREAD_STACKSIZE);
		switch_core_timer_init(&context->video_timer, "soft", 1, 1, context->pool);
		context->eh.video_timer = &context->video_timer;
		if (context->has_audio) {
			context->audio_st[0].frame->pts = 0;
			context->audio_st[0].next_pts = 0;
		}

		switch_thread_create(&context->eh.video_thread, thd_attr, video_thread_run, context, handle->memory_pool);
	}

	switch_img_copy(frame->img, &img);
	switch_queue_push(context->eh.video_queue, img);
	
	if (!context->vid_ready) {
		switch_mutex_lock(context->mutex);
		switch_buffer_zero(context->audio_buffer);
		switch_mutex_unlock(context->mutex);
		context->vid_ready = 1;
	}

end:
	return status;
}


static switch_status_t av_file_set_string(switch_file_handle_t *handle, switch_audio_col_t col, const char *string)
{
	av_file_context_t *context = (av_file_context_t *)handle->private_info;

	if (context->fc) {
		const char *field = switch_parse_audio_col(col);

		if (field) {
			av_dict_set(&context->fc->metadata, field, string, 0);
			return SWITCH_STATUS_SUCCESS;
		}
	}

	return SWITCH_STATUS_FALSE;
}

static switch_status_t av_file_get_string(switch_file_handle_t *handle, switch_audio_col_t col, const char **string)
{
	av_file_context_t *context = (av_file_context_t *)handle->private_info;

	if (context->fc) {
		AVDictionaryEntry *tag = NULL;
		const char *field = switch_parse_audio_col(col);

		if (field && (tag = av_dict_get(context->fc->metadata, field, tag, 0))) {
			*string = tag->value;
			return SWITCH_STATUS_SUCCESS;
		}
	}

	return SWITCH_STATUS_FALSE;
}

static char *supported_formats[SWITCH_MAX_CODECS] = { 0 };

static const char modname[] = "mod_av";

static switch_status_t load_config(void)
{
	char *cf = "avformat.conf";
	switch_xml_t cfg, xml, param, settings;

	if (!(xml = switch_xml_open_cfg(cf, &cfg, NULL))) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "open of %s failed\n", cf);
		return SWITCH_STATUS_TERM;
	}

	if ((settings = switch_xml_child(cfg, "settings"))) {
		for (param = switch_xml_child(settings, "param"); param; param = param->next) {
			char *var = (char *) switch_xml_attr_soft(param, "name");
			char *val = (char *) switch_xml_attr_soft(param, "value");

			if (!strcasecmp(var, "colorspace")) {
				int value = atoi(val);

				avformat_globals.colorspace = UINTVAL(value);

				if (avformat_globals.colorspace > AVCOL_SPC_NB) {
					avformat_globals.colorspace = AVCOL_SPC_RGB;
				}
			}
		}
	}

	switch_xml_free(xml);
	return SWITCH_STATUS_SUCCESS;
}

SWITCH_MODULE_LOAD_FUNCTION(mod_avformat_load)
{
	switch_file_interface_t *file_interface;
	int i = 0;

	memset(&avformat_globals, 0, sizeof(struct avformat_globals));
	load_config();

	supported_formats[i++] = "av";
	supported_formats[i++] = "rtmp";
	supported_formats[i++] = "rtmps";
	supported_formats[i++] = "rtsp";
	supported_formats[i++] = "mp4";
	supported_formats[i++] = "m4a";
	supported_formats[i++] = "mov";
	supported_formats[i++] = "mkv";
	supported_formats[i++] = "webm";
	//supported_formats[i++] = "wav";

	file_interface = (switch_file_interface_t *)switch_loadable_module_create_interface(*module_interface, SWITCH_FILE_INTERFACE);
	file_interface->interface_name = modname;
	file_interface->extens = supported_formats;
	file_interface->file_open = av_file_open;
	file_interface->file_close = av_file_close;
	file_interface->file_truncate = av_file_truncate;
	file_interface->file_read = av_file_read;
	file_interface->file_write = av_file_write;
	file_interface->file_read_video = av_file_read_video;
	file_interface->file_write_video = av_file_write_video;
	file_interface->file_seek = av_file_seek;
	file_interface->file_set_string = av_file_set_string;
	file_interface->file_get_string = av_file_get_string;
	file_interface->file_command = av_file_command;

	/* indicate that the module should continue to be loaded */
	return SWITCH_STATUS_SUCCESS;
}

/* For Emacs:
 * Local Variables:
 * mode:c
 * indent-tabs-mode:t
 * tab-width:4
 * c-basic-offset:4
 * End:
 * For VIM:
 * vim:set softtabstop=4 shiftwidth=4 tabstop=4:
 */