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Code Issues Releases Activity

FLV 8-bit PCM is unsigned, not signed

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Fixes issue #1569

Originally committed as revision 20853 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Daniel Verkamp 2009-12-14 03:30:25 +00:00
parent 22b16e6a5d
commit 8e9efe4392
2 changed files with 5 additions and 5 deletions
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4
libavformat/flvdec.c
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@ -50,7 +50,7 @@ static void flv_set_audio_codec(AVFormatContext *s, AVStream *astream, int flv_c
switch(flv_codecid) {
//no distinction between S16 and S8 PCM codec flags
case FLV_CODECID_PCM:
acodec->codec_id = acodec->bits_per_coded_sample == 8 ? CODEC_ID_PCM_S8 :
acodec->codec_id = acodec->bits_per_coded_sample == 8 ? CODEC_ID_PCM_U8 :
#if HAVE_BIGENDIAN
CODEC_ID_PCM_S16BE;
#else
@ -58,7 +58,7 @@ static void flv_set_audio_codec(AVFormatContext *s, AVStream *astream, int flv_c
#endif
break;
case FLV_CODECID_PCM_LE:
acodec->codec_id = acodec->bits_per_coded_sample == 8 ? CODEC_ID_PCM_S8 : CODEC_ID_PCM_S16LE; break;
acodec->codec_id = acodec->bits_per_coded_sample == 8 ? CODEC_ID_PCM_U8 : CODEC_ID_PCM_S16LE; break;
case FLV_CODECID_AAC : acodec->codec_id = CODEC_ID_AAC; break;
case FLV_CODECID_ADPCM: acodec->codec_id = CODEC_ID_ADPCM_SWF; break;
case FLV_CODECID_SPEEX:

6
libavformat/flvenc.c
View File

@ -38,7 +38,7 @@ static const AVCodecTag flv_video_codec_ids[] = {
static const AVCodecTag flv_audio_codec_ids[] = {
{CODEC_ID_MP3, FLV_CODECID_MP3 >> FLV_AUDIO_CODECID_OFFSET},
{CODEC_ID_PCM_S8, FLV_CODECID_PCM >> FLV_AUDIO_CODECID_OFFSET},
{CODEC_ID_PCM_U8, FLV_CODECID_PCM >> FLV_AUDIO_CODECID_OFFSET},
{CODEC_ID_PCM_S16BE, FLV_CODECID_PCM >> FLV_AUDIO_CODECID_OFFSET},
{CODEC_ID_PCM_S16LE, FLV_CODECID_PCM_LE >> FLV_AUDIO_CODECID_OFFSET},
{CODEC_ID_ADPCM_SWF, FLV_CODECID_ADPCM >> FLV_AUDIO_CODECID_OFFSET},
@ -107,7 +107,7 @@ static int get_audio_flags(AVCodecContext *enc){
case CODEC_ID_MP3:
flags |= FLV_CODECID_MP3 | FLV_SAMPLESSIZE_16BIT;
break;
case CODEC_ID_PCM_S8:
case CODEC_ID_PCM_U8:
flags |= FLV_CODECID_PCM | FLV_SAMPLESSIZE_8BIT;
break;
case CODEC_ID_PCM_S16BE:
@ -248,7 +248,7 @@ static int flv_write_header(AVFormatContext *s)
put_amf_double(pb, audio_enc->sample_rate);
put_amf_string(pb, "audiosamplesize");
put_amf_double(pb, audio_enc->codec_id == CODEC_ID_PCM_S8 ? 8 : 16);
put_amf_double(pb, audio_enc->codec_id == CODEC_ID_PCM_U8 ? 8 : 16);
put_amf_string(pb, "stereo");
put_amf_bool(pb, audio_enc->channels == 2);