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| author | Justin Ruggles <justin.ruggles@gmail.com> | 2011-10-09 13:27:16 -0400 |
|---|---|---|
| committer | Justin Ruggles <justin.ruggles@gmail.com> | 2011-10-26 11:50:16 -0400 |
| commit | c39bddd392f4fe79e038f5753ac10abb78dedeb8 (patch) | |
| tree | 0f8c58bb2c1a043492f148b0654fe7d252b62b23 /libavcodec/alac.c | |
| parent | e739d35156c85b3ccae4fdacd368933f0408227a (diff) | |
| download | ffmpeg-c39bddd392f4fe79e038f5753ac10abb78dedeb8.tar.gz | |
alacdec: move appending of extra_bits to a separate function.
This should also fix decoding of mono 24-bit.
Diffstat (limited to 'libavcodec/alac.c')
| -rw-r--r-- | libavcodec/alac.c | 25 |
1 files changed, 16 insertions, 9 deletions
diff --git a/libavcodec/alac.c b/libavcodec/alac.c index 96b25e0086..b7071d2a15 100644 --- a/libavcodec/alac.c +++ b/libavcodec/alac.c @@ -319,6 +319,17 @@ static void decorrelate_stereo(int32_t *buffer[MAX_CHANNELS], } } +static void append_extra_bits(int32_t *buffer[MAX_CHANNELS], + int32_t *extra_bits_buffer[MAX_CHANNELS], + int extra_bits, int numchannels, int numsamples) +{ + int i, ch; + + for (ch = 0; ch < numchannels; ch++) + for (i = 0; i < numsamples; i++) + buffer[ch][i] = (buffer[ch][i] << extra_bits) | extra_bits_buffer[ch][i]; +} + static void reconstruct_stereo_16(int32_t *buffer[MAX_CHANNELS], int16_t *buffer_out, int numchannels, int numsamples) @@ -338,8 +349,6 @@ static void reconstruct_stereo_16(int32_t *buffer[MAX_CHANNELS], static void decorrelate_stereo_24(int32_t *buffer[MAX_CHANNELS], int32_t *buffer_out, - int32_t *extra_bits_buffer[MAX_CHANNELS], - int extra_bits, int numchannels, int numsamples) { int i; @@ -350,11 +359,6 @@ static void decorrelate_stereo_24(int32_t *buffer[MAX_CHANNELS], left = buffer[0][i]; right = buffer[1][i]; - if (extra_bits) { - left = (left << extra_bits) | extra_bits_buffer[0][i]; - right = (right << extra_bits) | extra_bits_buffer[1][i]; - } - buffer_out[i * numchannels] = left << 8; buffer_out[i * numchannels + 1] = right << 8; } @@ -522,6 +526,11 @@ static int alac_decode_frame(AVCodecContext *avctx, interlacing_leftweight); } + if (alac->extra_bits) { + append_extra_bits(alac->outputsamples_buffer, alac->extra_bits_buffer, + alac->extra_bits, alac->numchannels, outputsamples); + } + switch(alac->setinfo_sample_size) { case 16: if (channels == 2) { @@ -540,8 +549,6 @@ static int alac_decode_frame(AVCodecContext *avctx, if (channels == 2) { decorrelate_stereo_24(alac->outputsamples_buffer, outbuffer, - alac->extra_bits_buffer, - alac->extra_bits, alac->numchannels, outputsamples); } else { |