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Sync to original FLAC.

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Main reason from their CVS log: add support for synthesis to big-endian in plugins.


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@11702 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
lumag 2003-12-29 18:10:49 +00:00
parent 184852b051
commit b00702fd6a
1 changed files with 12 additions and 21 deletions
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33
libmpcodecs/ad_flac.c
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@ -108,32 +108,19 @@ FLAC__StreamDecoderReadStatus flac_read_callback (const FLAC__StreamDecoder *dec
FLAC__StreamDecoderWriteStatus flac_write_callback(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data)
{
FLAC__byte *buf = ((flac_struct_t*)(client_data))->buf;
int channel, sample;
int bps = ((flac_struct_t*)(client_data))->sh->samplesize;
int lowendian = (((flac_struct_t*)(client_data))->sh->sample_format == AFMT_S16_LE);
int unsigned_data = (((flac_struct_t*)(client_data))->sh->sample_format == AFMT_U8);
mp_msg(MSGT_DECAUDIO, MSGL_DBG2, "\nWrite callback (%d bytes)!!!!\n", bps*frame->header.blocksize*frame->header.channels);
if (buf == NULL)
{
/* This is used in control for skipping 1 audio frame */
return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
}
#if 0
for (sample = 0; sample < frame->header.blocksize; sample ++)
for (channel = 0; channel < frame->header.channels; channel ++)
switch (bps)
{
case 3:
buf[bps*(sample*frame->header.channels+channel)+2] = (FLAC__byte)(buffer[channel][sample]>>16);
case 2:
buf[bps*(sample*frame->header.channels+channel)+1] = (FLAC__byte)(buffer[channel][sample]>>8);
buf[bps*(sample*frame->header.channels+channel)+0] = (FLAC__byte)(buffer[channel][sample]);
break;
case 1:
buf[bps*(sample*frame->header.channels+channel)] = buffer[channel][sample]^0x80;
break;
}
#else
FLAC__plugin_common__apply_gain(
FLAC__replaygain_synthesis__apply_gain(
buf,
lowendian,
unsigned_data,
buffer,
frame->header.blocksize,
frame->header.channels,
@ -144,7 +131,6 @@ FLAC__StreamDecoderWriteStatus flac_write_callback(const FLAC__StreamDecoder *de
dither,
&(((flac_struct_t*)(client_data))->dither_context)
);
#endif
((flac_struct_t*)(client_data))->written += bps*frame->header.blocksize*frame->header.channels;
return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
}
@ -238,7 +224,12 @@ void flac_metadata_callback (const FLAC__StreamDecoder *decoder, const FLAC__Str
((flac_struct_t*)client_data)->bits_per_sample = metadata->data.stream_info.bits_per_sample;
sh->samplesize = (metadata->data.stream_info.bits_per_sample<=8)?1:2;
/* FIXME: need to support dithering to samplesize 4 */
sh->sample_format=(sh->samplesize==1)?AFMT_U8:AFMT_S16_LE; // sample format, see libao2/afmt.h
sh->sample_format=(sh->samplesize==1)?AFMT_U8:
#ifdef WORDS_BIGENDIAN
AFMT_S16_BE;
#else
AFMT_S16_LE;
#endif
sh->o_bps = sh->samplesize * metadata->data.stream_info.channels * metadata->data.stream_info.sample_rate;
sh->i_bps = metadata->data.stream_info.bits_per_sample * metadata->data.stream_info.channels * metadata->data.stream_info.sample_rate / 8 / 2;
// input data rate (compressed bytes per second)
@ -460,7 +451,7 @@ static int init(sh_audio_t *sh_audio){
FLAC__stream_decoder_process_until_end_of_metadata(context->flac_dec);
FLAC__plugin_common__init_dither_context(&(context->dither_context), sh_audio->samplesize * 8, noise_shaping);
FLAC__replaygain_synthesis__init_dither_context(&(context->dither_context), sh_audio->samplesize * 8, noise_shaping);
return 1; // return values: 1=OK 0=ERROR
}