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FS#12443: Implement downmixing to stereo for multichannel flac.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31253 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Andree Buschmann 2011-12-14 18:02:57 +00:00
parent 6b45019077
commit 5b8ed62922
3 changed files with 94 additions and 9 deletions
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5
apps/codecs/flac.c
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@ -27,7 +27,7 @@ CODEC_HEADER
/* The output buffers containing the decoded samples (channels 0 and 1) */
static int32_t decoded0[MAX_BLOCKSIZE] IBSS_ATTR_FLAC_DECODED0;
static int32_t decoded1[MAX_BLOCKSIZE] IBSS_ATTR;
static int32_t dummydec[MAX_BLOCKSIZE];
static int32_t dummydec[4][MAX_BLOCKSIZE];
#define MAX_SUPPORTED_SEEKTABLE_SIZE 5000
@ -98,8 +98,7 @@ static bool flac_init(FLACContext* fc, int first_frame_offset)
fc->decoded[1] = decoded1;
for (ch=2; ch<MAX_CHANNELS; ++ch)
{
/* Only channel 0 and 1 are used, the other are decoded to scratch */
fc->decoded[ch] = dummydec;
fc->decoded[ch] = dummydec[ch-2];
}
/* Skip any foreign tags at start of file */