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This commit is contained in:
Isaac Connor 2021-04-19 09:51:43 -04:00
parent fd79f3d760
commit a38463f99e
1 changed files with 74 additions and 83 deletions
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145
src/zm_ffmpeg.cpp
View File

@ -31,42 +31,39 @@ extern "C" {
void log_libav_callback(void *ptr, int level, const char *fmt, va_list vargs) { void log_libav_callback(void *ptr, int level, const char *fmt, va_list vargs) {
Logger *log = Logger::fetch(); Logger *log = Logger::fetch();
int log_level = 0; int log_level = 0;
if ( level == AV_LOG_QUIET ) { // -8 if (level == AV_LOG_QUIET) { // -8
log_level = Logger::NOLOG; log_level = Logger::NOLOG;
} else if ( level == AV_LOG_PANIC ) { //0 } else if (level == AV_LOG_PANIC) { //0
log_level = Logger::PANIC; log_level = Logger::PANIC;
} else if ( level == AV_LOG_FATAL ) { // 8 } else if (level == AV_LOG_FATAL) { // 8
log_level = Logger::FATAL; log_level = Logger::FATAL;
} else if ( level == AV_LOG_ERROR ) { // 16 } else if (level == AV_LOG_ERROR) { // 16
log_level = Logger::WARNING; // ffmpeg outputs a lot of errors that don't really affect anything. log_level = Logger::WARNING; // ffmpeg outputs a lot of errors that don't really affect anything.
//log_level = Logger::ERROR; } else if (level == AV_LOG_WARNING) { //24
} else if ( level == AV_LOG_WARNING ) { //24
log_level = Logger::INFO; log_level = Logger::INFO;
//log_level = Logger::WARNING; } else if (level == AV_LOG_INFO) { //32
} else if ( level == AV_LOG_INFO ) { //32
log_level = Logger::DEBUG1; log_level = Logger::DEBUG1;
//log_level = Logger::INFO; } else if (level == AV_LOG_VERBOSE) { //40
} else if ( level == AV_LOG_VERBOSE ) { //40
log_level = Logger::DEBUG2; log_level = Logger::DEBUG2;
} else if ( level == AV_LOG_DEBUG ) { //48 } else if (level == AV_LOG_DEBUG) { //48
log_level = Logger::DEBUG3; log_level = Logger::DEBUG3;
#ifdef AV_LOG_TRACE #ifdef AV_LOG_TRACE
} else if ( level == AV_LOG_TRACE ) { } else if (level == AV_LOG_TRACE) {
log_level = Logger::DEBUG8; log_level = Logger::DEBUG8;
#endif #endif
#ifdef AV_LOG_MAX_OFFSET #ifdef AV_LOG_MAX_OFFSET
} else if ( level == AV_LOG_MAX_OFFSET ) { } else if (level == AV_LOG_MAX_OFFSET) {
log_level = Logger::DEBUG9; log_level = Logger::DEBUG9;
#endif #endif
} else { } else {
Error("Unknown log level %d", level); Error("Unknown log level %d", level);
} }
if ( log ) { if (log) {
char logString[8192]; char logString[8192];
int length = vsnprintf(logString, sizeof(logString)-1, fmt, vargs); int length = vsnprintf(logString, sizeof(logString)-1, fmt, vargs);
if ( length > 0 ) { if (length > 0) {
if ( static_cast<size_t>(length) > sizeof(logString)-1 ) length = sizeof(logString)-1; if (static_cast<size_t>(length) > sizeof(logString)-1) length = sizeof(logString)-1;
// ffmpeg logs have a carriage return, so replace it with terminator // ffmpeg logs have a carriage return, so replace it with terminator
logString[length-1] = 0; logString[length-1] = 0;
log->logPrint(false, __FILE__, __LINE__, log_level, logString); log->logPrint(false, __FILE__, __LINE__, log_level, logString);
@ -80,8 +77,8 @@ static bool bInit = false;
void FFMPEGInit() { void FFMPEGInit() {
if ( !bInit ) { if (!bInit) {
if ( logDebugging() && config.log_ffmpeg ) { if (logDebugging() && config.log_ffmpeg) {
av_log_set_level(AV_LOG_DEBUG); av_log_set_level(AV_LOG_DEBUG);
av_log_set_callback(log_libav_callback); av_log_set_callback(log_libav_callback);
Info("Enabling ffmpeg logs, as LOG_DEBUG+LOG_FFMPEG are enabled in options"); Info("Enabling ffmpeg logs, as LOG_DEBUG+LOG_FFMPEG are enabled in options");
@ -108,9 +105,8 @@ enum _AVPIXELFORMAT GetFFMPEGPixelFormat(unsigned int p_colours, unsigned p_subp
Debug(8,"Colours: %d SubpixelOrder: %d",p_colours,p_subpixelorder); Debug(8,"Colours: %d SubpixelOrder: %d",p_colours,p_subpixelorder);
switch(p_colours) { switch (p_colours) {
case ZM_COLOUR_RGB24: case ZM_COLOUR_RGB24:
{
if(p_subpixelorder == ZM_SUBPIX_ORDER_BGR) { if(p_subpixelorder == ZM_SUBPIX_ORDER_BGR) {
/* BGR subpixel order */ /* BGR subpixel order */
pf = AV_PIX_FMT_BGR24; pf = AV_PIX_FMT_BGR24;
@ -119,16 +115,14 @@ enum _AVPIXELFORMAT GetFFMPEGPixelFormat(unsigned int p_colours, unsigned p_subp
pf = AV_PIX_FMT_RGB24; pf = AV_PIX_FMT_RGB24;
} }
break; break;
}
case ZM_COLOUR_RGB32: case ZM_COLOUR_RGB32:
{ if (p_subpixelorder == ZM_SUBPIX_ORDER_ARGB) {
if(p_subpixelorder == ZM_SUBPIX_ORDER_ARGB) {
/* ARGB subpixel order */ /* ARGB subpixel order */
pf = AV_PIX_FMT_ARGB; pf = AV_PIX_FMT_ARGB;
} else if(p_subpixelorder == ZM_SUBPIX_ORDER_ABGR) { } else if (p_subpixelorder == ZM_SUBPIX_ORDER_ABGR) {
/* ABGR subpixel order */ /* ABGR subpixel order */
pf = AV_PIX_FMT_ABGR; pf = AV_PIX_FMT_ABGR;
} else if(p_subpixelorder == ZM_SUBPIX_ORDER_BGRA) { } else if (p_subpixelorder == ZM_SUBPIX_ORDER_BGRA) {
/* BGRA subpixel order */ /* BGRA subpixel order */
pf = AV_PIX_FMT_BGRA; pf = AV_PIX_FMT_BGRA;
} else { } else {
@ -136,12 +130,11 @@ enum _AVPIXELFORMAT GetFFMPEGPixelFormat(unsigned int p_colours, unsigned p_subp
pf = AV_PIX_FMT_RGBA; pf = AV_PIX_FMT_RGBA;
} }
break; break;
}
case ZM_COLOUR_GRAY8: case ZM_COLOUR_GRAY8:
pf = AV_PIX_FMT_GRAY8; pf = AV_PIX_FMT_GRAY8;
break; break;
default: default:
Panic("Unexpected colours: %d",p_colours); Panic("Unexpected colours: %d", p_colours);
pf = AV_PIX_FMT_GRAY8; /* Just to shush gcc variable may be unused warning */ pf = AV_PIX_FMT_GRAY8; /* Just to shush gcc variable may be unused warning */
break; break;
} }
@ -174,6 +167,7 @@ static int parse_key_value_pair(AVDictionary **pm, const char **buf,
return ret; return ret;
} }
int av_dict_parse_string(AVDictionary **pm, const char *str, int av_dict_parse_string(AVDictionary **pm, const char *str,
const char *key_val_sep, const char *pairs_sep, const char *key_val_sep, const char *pairs_sep,
int flags) { int flags) {
@ -283,7 +277,7 @@ void zm_dump_codec(const AVCodecContext *codec) {
/* "user interface" functions */ /* "user interface" functions */
void zm_dump_stream_format(AVFormatContext *ic, int i, int index, int is_output) { void zm_dump_stream_format(AVFormatContext *ic, int i, int index, int is_output) {
Debug(1, "Dumping stream index i(%d) index(%d)", i, index ); Debug(1, "Dumping stream index i(%d) index(%d)", i, index);
int flags = (is_output ? ic->oformat->flags : ic->iformat->flags); int flags = (is_output ? ic->oformat->flags : ic->iformat->flags);
AVStream *st = ic->streams[i]; AVStream *st = ic->streams[i];
AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", nullptr, 0); AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", nullptr, 0);
@ -317,7 +311,7 @@ void zm_dump_stream_format(AVFormatContext *ic, int i, int index, int is_output)
Debug(1, "codec: %s", buf); Debug(1, "codec: %s", buf);
#endif #endif
if ( st->sample_aspect_ratio.num && // default if (st->sample_aspect_ratio.num && // default
av_cmp_q(st->sample_aspect_ratio, codec->sample_aspect_ratio) av_cmp_q(st->sample_aspect_ratio, codec->sample_aspect_ratio)
) { ) {
AVRational display_aspect_ratio; AVRational display_aspect_ratio;
@ -331,7 +325,7 @@ void zm_dump_stream_format(AVFormatContext *ic, int i, int index, int is_output)
display_aspect_ratio.num, display_aspect_ratio.den); display_aspect_ratio.num, display_aspect_ratio.den);
} }
if ( codec->codec_type == AVMEDIA_TYPE_VIDEO ) { if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
int fps = st->avg_frame_rate.den && st->avg_frame_rate.num; int fps = st->avg_frame_rate.den && st->avg_frame_rate.num;
int tbn = st->time_base.den && st->time_base.num; int tbn = st->time_base.den && st->time_base.num;
@ -339,7 +333,7 @@ void zm_dump_stream_format(AVFormatContext *ic, int i, int index, int is_output)
zm_log_fps(av_q2d(st->avg_frame_rate), "fps"); zm_log_fps(av_q2d(st->avg_frame_rate), "fps");
if (tbn) if (tbn)
zm_log_fps(1 / av_q2d(st->time_base), "stream tb numerator"); zm_log_fps(1 / av_q2d(st->time_base), "stream tb numerator");
} else if ( codec->codec_type == AVMEDIA_TYPE_AUDIO ) { } else if (codec->codec_type == AVMEDIA_TYPE_AUDIO) {
Debug(1, "profile %d channels %d sample_rate %d", Debug(1, "profile %d channels %d sample_rate %d",
codec->profile, codec->channels, codec->sample_rate); codec->profile, codec->channels, codec->sample_rate);
} }
@ -401,7 +395,7 @@ enum AVPixelFormat fix_deprecated_pix_fmt(enum AVPixelFormat fmt) {
#if LIBAVCODEC_VERSION_CHECK(56, 8, 0, 60, 100) #if LIBAVCODEC_VERSION_CHECK(56, 8, 0, 60, 100)
#else #else
unsigned int zm_av_packet_ref( AVPacket *dst, AVPacket *src ) { unsigned int zm_av_packet_ref(AVPacket *dst, AVPacket *src) {
av_new_packet(dst,src->size); av_new_packet(dst,src->size);
memcpy(dst->data, src->data, src->size); memcpy(dst->data, src->data, src->size);
dst->flags = src->flags; dst->flags = src->flags;
@ -444,14 +438,15 @@ void av_packet_rescale_ts(
bool is_video_stream(const AVStream * stream) { bool is_video_stream(const AVStream * stream) {
#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0) #if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
if ( stream->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ) { if (stream->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
#else #else
#if (LIBAVCODEC_VERSION_CHECK(52, 64, 0, 64, 0) || LIBAVUTIL_VERSION_CHECK(50, 14, 0, 14, 0)) #if (LIBAVCODEC_VERSION_CHECK(52, 64, 0, 64, 0) || LIBAVUTIL_VERSION_CHECK(50, 14, 0, 14, 0))
if ( stream->codec->codec_type == AVMEDIA_TYPE_VIDEO ) { if (stream->codec->codec_type == AVMEDIA_TYPE_VIDEO)
#else #else
if ( stream->codec->codec_type == CODEC_TYPE_VIDEO ) { if (stream->codec->codec_type == CODEC_TYPE_VIDEO)
#endif #endif
#endif #endif
{
return true; return true;
} }
#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0) #if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
@ -461,54 +456,51 @@ bool is_video_stream(const AVStream * stream) {
return false; return false;
} }
bool is_video_context(const AVCodecContext *codec_context ) { bool is_video_context(const AVCodecContext *codec_context) {
return return
#if (LIBAVCODEC_VERSION_CHECK(52, 64, 0, 64, 0) || LIBAVUTIL_VERSION_CHECK(50, 14, 0, 14, 0)) #if (LIBAVCODEC_VERSION_CHECK(52, 64, 0, 64, 0) || LIBAVUTIL_VERSION_CHECK(50, 14, 0, 14, 0))
( codec_context->codec_type == AVMEDIA_TYPE_VIDEO ); (codec_context->codec_type == AVMEDIA_TYPE_VIDEO);
#else #else
( codec_context->codec_type == CODEC_TYPE_VIDEO ); (codec_context->codec_type == CODEC_TYPE_VIDEO);
#endif #endif
} }
bool is_audio_stream(const AVStream * stream ) { bool is_audio_stream(const AVStream * stream) {
#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0) #if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
if ( stream->codecpar->codec_type == AVMEDIA_TYPE_AUDIO ) { if (stream->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
#else #else
#if (LIBAVCODEC_VERSION_CHECK(52, 64, 0, 64, 0) || LIBAVUTIL_VERSION_CHECK(50, 14, 0, 14, 0)) #if (LIBAVCODEC_VERSION_CHECK(52, 64, 0, 64, 0) || LIBAVUTIL_VERSION_CHECK(50, 14, 0, 14, 0))
if ( stream->codec->codec_type == AVMEDIA_TYPE_AUDIO ) { if (stream->codec->codec_type == AVMEDIA_TYPE_AUDIO)
#else #else
if ( stream->codec->codec_type == CODEC_TYPE_AUDIO ) { if (stream->codec->codec_type == CODEC_TYPE_AUDIO)
#endif #endif
#endif #endif
{
return true; return true;
} }
return false; return false;
} }
bool is_audio_context(const AVCodecContext *codec_context ) { bool is_audio_context(const AVCodecContext *codec_context) {
return return
#if (LIBAVCODEC_VERSION_CHECK(52, 64, 0, 64, 0) || LIBAVUTIL_VERSION_CHECK(50, 14, 0, 14, 0)) #if (LIBAVCODEC_VERSION_CHECK(52, 64, 0, 64, 0) || LIBAVUTIL_VERSION_CHECK(50, 14, 0, 14, 0))
( codec_context->codec_type == AVMEDIA_TYPE_AUDIO ); (codec_context->codec_type == AVMEDIA_TYPE_AUDIO);
#else #else
( codec_context->codec_type == CODEC_TYPE_AUDIO ); (codec_context->codec_type == CODEC_TYPE_AUDIO);
#endif #endif
} }
int zm_receive_packet(AVCodecContext *context, AVPacket &packet) { int zm_receive_packet(AVCodecContext *context, AVPacket &packet) {
#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0) #if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
int ret = avcodec_receive_packet(context, &packet); int ret = avcodec_receive_packet(context, &packet);
if ( ret < 0 ) { if ((ret < 0) and (AVERROR_EOF != ret)) {
if ( AVERROR_EOF != ret ) { Error("Error encoding (%d) (%s)", ret, av_err2str(ret));
Error("Error encoding (%d) (%s)", ret,
av_err2str(ret));
}
return ret;
} }
return ret; // 1 or 0 return ret; // 1 or 0
#else #else
int got_packet = 0; int got_packet = 0;
int ret = avcodec_encode_audio2(context, &packet, nullptr, &got_packet); int ret = avcodec_encode_audio2(context, &packet, nullptr, &got_packet);
if ( ret < 0 ) { if (ret < 0) {
Error("Error encoding (%d) (%s)", ret, av_err2str(ret)); Error("Error encoding (%d) (%s)", ret, av_err2str(ret));
return ret; return ret;
} }
@ -522,14 +514,14 @@ int zm_send_packet_receive_frame(
AVPacket &packet) { AVPacket &packet) {
int ret; int ret;
#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0) #if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
if ( (ret = avcodec_send_packet(context, &packet)) < 0 ) { if ((ret = avcodec_send_packet(context, &packet)) < 0) {
Error("Unable to send packet %s, continuing", Error("Unable to send packet %s, continuing",
av_make_error_string(ret).c_str()); av_make_error_string(ret).c_str());
return ret; return ret;
} }
if ( (ret = avcodec_receive_frame(context, frame)) < 0 ) { if ((ret = avcodec_receive_frame(context, frame)) < 0) {
if ( AVERROR(EAGAIN) == ret ) { if (AVERROR(EAGAIN) == ret) {
// The codec may need more samples than it has, perfectly valid // The codec may need more samples than it has, perfectly valid
Debug(2, "Codec not ready to give us a frame"); Debug(2, "Codec not ready to give us a frame");
} else { } else {
@ -542,14 +534,14 @@ int zm_send_packet_receive_frame(
return packet.size; return packet.size;
# else # else
int frameComplete = 0; int frameComplete = 0;
if ( is_video_context(context) ) { if (is_video_context(context)) {
ret = zm_avcodec_decode_video(context, frame, &frameComplete, &packet); ret = zm_avcodec_decode_video(context, frame, &frameComplete, &packet);
Debug(2, "ret from decode_video %d, framecomplete %d", ret, frameComplete); Debug(2, "ret from decode_video %d, framecomplete %d", ret, frameComplete);
} else { } else {
ret = avcodec_decode_audio4(context, frame, &frameComplete, &packet); ret = avcodec_decode_audio4(context, frame, &frameComplete, &packet);
Debug(2, "ret from decode_audio %d, framecomplete %d", ret, frameComplete); Debug(2, "ret from decode_audio %d, framecomplete %d", ret, frameComplete);
} }
if ( ret < 0 ) { if (ret < 0) {
Error("Unable to decode frame: %s", av_make_error_string(ret).c_str()); Error("Unable to decode frame: %s", av_make_error_string(ret).c_str());
return ret; return ret;
} }
@ -562,18 +554,18 @@ int zm_send_packet_receive_frame(
int zm_send_frame_receive_packet(AVCodecContext *ctx, AVFrame *frame, AVPacket &packet) { int zm_send_frame_receive_packet(AVCodecContext *ctx, AVFrame *frame, AVPacket &packet) {
int ret; int ret;
#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0) #if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
if ( ( (ret = avcodec_send_frame(ctx, frame)) < 0 ) and frame ) { if (( (ret = avcodec_send_frame(ctx, frame)) < 0 ) and frame) {
Error("Could not send frame (error '%s')", Error("Could not send frame (error '%s')",
av_make_error_string(ret).c_str()); av_make_error_string(ret).c_str());
return ret; return ret;
} }
if ( (ret = avcodec_receive_packet(ctx, &packet)) < 0 ) { if ((ret = avcodec_receive_packet(ctx, &packet)) < 0) {
if ( AVERROR(EAGAIN) == ret ) { if (AVERROR(EAGAIN) == ret) {
// The codec may need more samples than it has, perfectly valid // The codec may need more samples than it has, perfectly valid
Debug(2, "Codec not ready to give us a packet"); Debug(2, "Codec not ready to give us a packet");
return 0; return 0;
} else if ( frame ) { } else if (frame) {
// May get EOF if frame is NULL because it signals flushing // May get EOF if frame is NULL because it signals flushing
Error("Could not recieve packet (error %d = '%s')", ret, Error("Could not recieve packet (error %d = '%s')", ret,
av_make_error_string(ret).c_str()); av_make_error_string(ret).c_str());
@ -583,14 +575,14 @@ int zm_send_frame_receive_packet(AVCodecContext *ctx, AVFrame *frame, AVPacket &
} }
#else #else
int data_present; int data_present;
if ( (ret = avcodec_encode_audio2( if ((ret = avcodec_encode_audio2(
ctx, &packet, frame, &data_present)) < 0 ) { ctx, &packet, frame, &data_present)) < 0) {
Error("Could not encode frame (error '%s')", Error("Could not encode frame (error '%s')",
av_make_error_string(ret).c_str()); av_make_error_string(ret).c_str());
zm_av_packet_unref(&packet); zm_av_packet_unref(&packet);
return ret; return ret;
} }
if ( !data_present ) { if (!data_present) {
Debug(2, "Not ready to out a frame yet."); Debug(2, "Not ready to out a frame yet.");
zm_av_packet_unref(&packet); zm_av_packet_unref(&packet);
return 0; return 0;
@ -599,8 +591,8 @@ int zm_send_frame_receive_packet(AVCodecContext *ctx, AVFrame *frame, AVPacket &
return 1; return 1;
} // end int zm_send_frame_receive_packet } // end int zm_send_frame_receive_packet
void zm_free_codec( AVCodecContext **ctx ) { void zm_free_codec(AVCodecContext **ctx) {
if ( *ctx ) { if (*ctx) {
avcodec_close(*ctx); avcodec_close(*ctx);
#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0) #if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
// We allocate and copy in newer ffmpeg, so need to free it // We allocate and copy in newer ffmpeg, so need to free it
@ -630,7 +622,7 @@ int zm_resample_audio(
AVFrame *out_frame AVFrame *out_frame
) { ) {
#if defined(HAVE_LIBSWRESAMPLE) #if defined(HAVE_LIBSWRESAMPLE)
if ( in_frame ) { if (in_frame) {
// Resample the in_frame into the audioSampleBuffer until we process the whole // Resample the in_frame into the audioSampleBuffer until we process the whole
// decoded data. Note: pts does not survive resampling or converting // decoded data. Note: pts does not survive resampling or converting
Debug(2, "Converting %d to %d samples using swresample", Debug(2, "Converting %d to %d samples using swresample",
@ -639,7 +631,7 @@ int zm_resample_audio(
Debug(2, "Sending NULL frame to flush resampler"); Debug(2, "Sending NULL frame to flush resampler");
} }
int ret = swr_convert_frame(resample_ctx, out_frame, in_frame); int ret = swr_convert_frame(resample_ctx, out_frame, in_frame);
if ( ret < 0 ) { if (ret < 0) {
Error("Could not resample frame (error '%s')", Error("Could not resample frame (error '%s')",
av_make_error_string(ret).c_str()); av_make_error_string(ret).c_str());
return 0; return 0;
@ -648,25 +640,25 @@ int zm_resample_audio(
swr_get_delay(resample_ctx, out_frame->sample_rate)); swr_get_delay(resample_ctx, out_frame->sample_rate));
#else #else
#if defined(HAVE_LIBAVRESAMPLE) #if defined(HAVE_LIBAVRESAMPLE)
if ( ! in_frame ) { if (!in_frame) {
Error("Flushing resampler not supported by AVRESAMPLE"); Error("Flushing resampler not supported by AVRESAMPLE");
return 0; return 0;
} }
int ret = avresample_convert(resample_ctx, nullptr, 0, 0, in_frame->data, int ret = avresample_convert(resample_ctx, nullptr, 0, 0, in_frame->data,
0, in_frame->nb_samples); 0, in_frame->nb_samples);
if ( ret < 0 ) { if (ret < 0) {
Error("Could not resample frame (error '%s')", Error("Could not resample frame (error '%s')",
av_make_error_string(ret).c_str()); av_make_error_string(ret).c_str());
return 0; return 0;
} }
int samples_available = avresample_available(resample_ctx); int samples_available = avresample_available(resample_ctx);
if ( samples_available < out_frame->nb_samples ) { if (samples_available < out_frame->nb_samples) {
Debug(1, "Not enough samples yet (%d)", samples_available); Debug(1, "Not enough samples yet (%d)", samples_available);
return 0; return 0;
} }
// Read a frame audio data from the resample fifo // Read a frame audio data from the resample fifo
if ( avresample_read(resample_ctx, out_frame->data, out_frame->nb_samples) != if (avresample_read(resample_ctx, out_frame->data, out_frame->nb_samples) !=
out_frame->nb_samples) { out_frame->nb_samples) {
Warning("Error reading resampled audio."); Warning("Error reading resampled audio.");
return 0; return 0;
@ -699,14 +691,14 @@ int zm_resample_get_delay(
int zm_add_samples_to_fifo(AVAudioFifo *fifo, AVFrame *frame) { int zm_add_samples_to_fifo(AVAudioFifo *fifo, AVFrame *frame) {
int ret = av_audio_fifo_realloc(fifo, av_audio_fifo_size(fifo) + frame->nb_samples); int ret = av_audio_fifo_realloc(fifo, av_audio_fifo_size(fifo) + frame->nb_samples);
if ( ret < 0 ) { if (ret < 0) {
Error("Could not reallocate FIFO to %d samples", Error("Could not reallocate FIFO to %d samples",
av_audio_fifo_size(fifo) + frame->nb_samples); av_audio_fifo_size(fifo) + frame->nb_samples);
return 0; return 0;
} }
/** Store the new samples in the FIFO buffer. */ /** Store the new samples in the FIFO buffer. */
ret = av_audio_fifo_write(fifo, (void **)frame->data, frame->nb_samples); ret = av_audio_fifo_write(fifo, (void **)frame->data, frame->nb_samples);
if ( ret < frame->nb_samples ) { if (ret < frame->nb_samples) {
Error("Could not write data to FIFO. %d written, expecting %d. Reason %s", Error("Could not write data to FIFO. %d written, expecting %d. Reason %s",
ret, frame->nb_samples, av_make_error_string(ret).c_str()); ret, frame->nb_samples, av_make_error_string(ret).c_str());
return 0; return 0;
@ -716,13 +708,13 @@ int zm_add_samples_to_fifo(AVAudioFifo *fifo, AVFrame *frame) {
int zm_get_samples_from_fifo(AVAudioFifo *fifo, AVFrame *frame) { int zm_get_samples_from_fifo(AVAudioFifo *fifo, AVFrame *frame) {
// AAC requires 1024 samples per encode. Our input tends to be something else, so need to buffer them. // AAC requires 1024 samples per encode. Our input tends to be something else, so need to buffer them.
if ( frame->nb_samples > av_audio_fifo_size(fifo) ) { if (frame->nb_samples > av_audio_fifo_size(fifo)) {
Debug(1, "Not enough samples in fifo for AAC codec frame_size %d > fifo size %d", Debug(1, "Not enough samples in fifo for AAC codec frame_size %d > fifo size %d",
frame->nb_samples, av_audio_fifo_size(fifo)); frame->nb_samples, av_audio_fifo_size(fifo));
return 0; return 0;
} }
if ( av_audio_fifo_read(fifo, (void **)frame->data, frame->nb_samples) < frame->nb_samples ) { if (av_audio_fifo_read(fifo, (void **)frame->data, frame->nb_samples) < frame->nb_samples) {
Error("Could not read data from FIFO"); Error("Could not read data from FIFO");
return 0; return 0;
} }
@ -730,4 +722,3 @@ int zm_get_samples_from_fifo(AVAudioFifo *fifo, AVFrame *frame) {
zm_dump_frame(frame, "Out frame after fifo read"); zm_dump_frame(frame, "Out frame after fifo read");
return 1; return 1;
} }