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audio buffer size patches

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6829 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
shatty 2004-02-29 23:31:22 +00:00
parent 681619c2ba
commit 6f524d0869
2 changed files with 17 additions and 18 deletions
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27
src/add-ons/media/plugins/speex/speexCodecPlugin.cpp
View File

@ -20,11 +20,15 @@
#define DECODE_BUFFER_SIZE (32 * 1024)
inline size_t
AudioBufferSize(media_raw_audio_format * raf, bigtime_t buffer_duration = 50000 /* 50 ms */)
inline void
AdjustBufferSize(media_raw_audio_format * raf, bigtime_t buffer_duration = 50000 /* 50 ms */)
{
return (raf->format & 0xf) * (raf->channel_count)
* (size_t)((raf->frame_rate * buffer_duration) / 1000000.0);
size_t frame_size = (raf->format & 0xf) * raf->channel_count;
if (raf->buffer_size <= frame_size) {
raf->buffer_size = frame_size * (size_t)((raf->frame_rate * buffer_duration) / 1000000.0);
} else {
raf->buffer_size = (raf->buffer_size / frame_size) * frame_size;
}
}
@ -209,21 +213,16 @@ SpeexDecoder::NegotiateOutputFormat(media_format *ioDecodedFormat)
format.u.raw_audio.frame_rate = (float)fHeader->rate;
format.u.raw_audio.channel_count = fHeader->nb_channels;
format.u.raw_audio.channel_mask = B_CHANNEL_LEFT | (fHeader->nb_channels != 1 ? B_CHANNEL_RIGHT : 0);
int buffer_size = ioDecodedFormat->u.raw_audio.buffer_size;
if (buffer_size < 512) {
buffer_size = AudioBufferSize(&format.u.raw_audio);
}
int output_length = fHeader->frame_size * fHeader->nb_channels
* (format.u.raw_audio.format & 0xf);
buffer_size = ((buffer_size - 1) / output_length + 1) * output_length;
format.u.raw_audio.buffer_size = buffer_size;
if (!format_is_compatible(format,*ioDecodedFormat)) {
*ioDecodedFormat = format;
}
ioDecodedFormat->SpecializeTo(&format);
AdjustBufferSize(&ioDecodedFormat->u.raw_audio);
int output_length = fHeader->frame_size * format.AudioFrameSize();
ioDecodedFormat->u.raw_audio.buffer_size
= ((ioDecodedFormat->u.raw_audio.buffer_size - 1) / output_length + 1) * output_length;
// setup output variables
fFrameSize = (ioDecodedFormat->u.raw_audio.format & 0xf) *
(ioDecodedFormat->u.raw_audio.channel_count);
fFrameSize = ioDecodedFormat->AudioFrameSize();
fOutputBufferSize = ioDecodedFormat->u.raw_audio.buffer_size;
fSpeexOutputLength = output_length;
return B_OK;

8
src/add-ons/media/plugins/vorbis/vorbisCodecPlugin.cpp
View File

@ -21,8 +21,8 @@
inline void
AdjustBufferSize(media_raw_audio_format * raf, bigtime_t buffer_duration = 50000 /* 50 ms */)
{
int frame_size = (raf->format & 0xf) * raf->channel_count;
if (raf->buffer_size == 0) {
size_t frame_size = (raf->format & 0xf) * raf->channel_count;
if (raf->buffer_size <= frame_size) {
raf->buffer_size = frame_size * (size_t)((raf->frame_rate * buffer_duration) / 1000000.0);
} else {
raf->buffer_size = (raf->buffer_size / frame_size) * frame_size;
@ -97,12 +97,12 @@ VorbisDecoder::Setup(media_format *inputFormat,
}
// parse comment packet
if (vorbis_synthesis_headerin(&fInfo,&fComment,&(*packets)[1]) != 0) {
TRACE("vorbiseDecoder::Setup: vorbis_synthesis_headerin failed: not vorbis comment\n");
TRACE("VorbisDecoder::Setup: vorbis_synthesis_headerin failed: not vorbis comment\n");
return B_ERROR;
}
// parse codebook packet
if (vorbis_synthesis_headerin(&fInfo,&fComment,&(*packets)[2]) != 0) {
TRACE("vorbiseDecoder::Setup: vorbis_synthesis_headerin failed: not vorbis codebook\n");
TRACE("VorbisDecoder::Setup: vorbis_synthesis_headerin failed: not vorbis codebook\n");
return B_ERROR;
}
// initialize decoder