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Code Issues Releases Wiki Activity

fix frame_size=0 export case

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Benjamin Drung <bdrung@debian.org>
This commit is contained in:
benjamin.drung@gmail.com 2014-05-27 21:37:15 +00:00
parent 73295bbc02
commit 3a56978e17
1 changed files with 10 additions and 7 deletions
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17
src/export/ExportFFmpeg.cpp
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@ -491,7 +491,7 @@ bool ExportFFmpeg::InitCodecs(AudacityProject *project)
}
// Open the codec.
if (avcodec_open2(mEncAudioCodecCtx, codec, &options) < 0 || mEncAudioCodecCtx->frame_size == 0)
if (avcodec_open2(mEncAudioCodecCtx, codec, &options) < 0)
{
wxLogError(wxT("FFmpeg : ERROR - Can't open audio codec 0x%x."),mEncAudioCodecCtx->codec_id);
return false;
@ -539,7 +539,10 @@ static int encode_audio(AVCodecContext *avctx, AVPacket *pkt, int nFifoBytes, in
frame->format = avctx->sample_fmt;
frame->channel_layout = avctx->channel_layout;
buffer_size = av_samples_get_buffer_size(NULL, avctx->channels, avctx->frame_size,
if (frame->nb_samples == 0)
frame->nb_samples = 1024; //arbitrary non zero number of samples
buffer_size = av_samples_get_buffer_size(NULL, avctx->channels, frame->nb_samples,
avctx->sample_fmt, 0);
if (buffer_size < 0) {
wxLogError(wxT("FFmpeg : ERROR - Could not get sample buffer siz"));
@ -610,7 +613,7 @@ bool ExportFFmpeg::Finalize()
nEncodedBytes = 0;
int nAudioFrameSizeOut = mEncAudioCodecCtx->frame_size * mEncAudioCodecCtx->channels * sizeof(int16_t);
if (mEncAudioCodecCtx->frame_size == 1) nAudioFrameSizeOut = mEncAudioEncodedBufSiz;
if (mEncAudioCodecCtx->frame_size <= 1) nAudioFrameSizeOut = mEncAudioEncodedBufSiz;
if (nAudioFrameSizeOut > mEncAudioFifoOutBufSiz || nFifoBytes > mEncAudioFifoOutBufSiz) {
wxLogError(wxT("FFmpeg : ERROR - Too much remaining data."));
@ -634,7 +637,7 @@ bool ExportFFmpeg::Finalize()
// Or if user configured the exporter to pad with silence, then we'll send audio + silence as a frame.
if ((codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME)
|| codec->id == CODEC_ID_FLAC
|| mEncAudioCodecCtx->frame_size == 1
|| mEncAudioCodecCtx->frame_size <= 1
|| gPrefs->Read(wxT("/FileFormats/OverrideSmallLastFrame"), true)
)
{
@ -642,7 +645,7 @@ bool ExportFFmpeg::Finalize()
// The last frame is going to contain a smaller than usual number of samples.
// For codecs without CODEC_CAP_SMALL_LAST_FRAME use normal frame size
if (mEncAudioCodecCtx->frame_size != 1 && codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME)
if (mEncAudioCodecCtx->frame_size > 1 && codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME)
mEncAudioCodecCtx->frame_size = nFifoBytes / (mEncAudioCodecCtx->channels * sizeof(int16_t));
wxLogDebug(wxT("FFmpeg : Audio FIFO still contains %d bytes, writing %d sample frame ..."),
@ -655,7 +658,7 @@ bool ExportFFmpeg::Finalize()
if (av_fifo_generic_read(mEncAudioFifo, nFifoBytes, NULL, mEncAudioFifoOutBuf) == 0)
#endif
{
if (mEncAudioCodecCtx->frame_size != 1)
if (mEncAudioCodecCtx->frame_size > 1)
nEncodedBytes = encode_audio(mEncAudioCodecCtx, &pkt, mEncAudioEncodedBufSiz, (int16_t*)mEncAudioFifoOutBuf);
else
nEncodedBytes = encode_audio(mEncAudioCodecCtx, &pkt, nFifoBytes, (int16_t*)mEncAudioFifoOutBuf);
@ -726,7 +729,7 @@ bool ExportFFmpeg::EncodeAudioFrame(int16_t *pFrame, int frameSize)
int nBytesToWrite = 0;
uint8_t * pRawSamples = NULL;
int nAudioFrameSizeOut = mEncAudioCodecCtx->frame_size * mEncAudioCodecCtx->channels * sizeof(int16_t);
if (mEncAudioCodecCtx->frame_size == 1) nAudioFrameSizeOut = mEncAudioEncodedBufSiz;
if (mEncAudioCodecCtx->frame_size <= 1) nAudioFrameSizeOut = mEncAudioEncodedBufSiz;
int ret;
nBytesToWrite = frameSize;