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| author | Nick Brereton <nick@nbrereton.net> | 2010-06-22 08:32:01 +0000 |
|---|---|---|
| committer | Martin Storsjö <martin@martin.st> | 2010-06-22 08:32:01 +0000 |
| commit | 77b4b7c383c4709b9d7aebf808ada1198c19aab3 (patch) | |
| tree | 8ee10a60cda985d421e7644803318d46356f55c3 /libavcodec | |
| parent | d99659f0b3ca873776ca7de4625534b2d8cb6c67 (diff) | |
| download | ffmpeg-77b4b7c383c4709b9d7aebf808ada1198c19aab3.tar.gz | |
Support DTS-ES extension (XCh) in dca: move subband_samples into context structure
Patch by Nick Brereton, nick at nbrereton dot net
Originally committed as revision 23694 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/dca.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/libavcodec/dca.c b/libavcodec/dca.c index 420cb1744a..407d2bf7c6 100644 --- a/libavcodec/dca.c +++ b/libavcodec/dca.c @@ -45,6 +45,7 @@ #define DCA_SUBBANDS (32) #define DCA_ABITS_MAX (32) /* Should be 28 */ #define DCA_SUBSUBFRAMES_MAX (4) +#define DCA_BLOCKS_MAX (16) #define DCA_LFE_MAX (3) enum DCAMode { @@ -237,6 +238,7 @@ typedef struct { float add_bias; ///< output bias float scale_bias; ///< output scale + DECLARE_ALIGNED(16, float, subband_samples)[DCA_BLOCKS_MAX][DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS][8]; DECLARE_ALIGNED(16, float, samples)[1536]; /* 6 * 256 = 1536, might only need 5 */ const float *samples_chanptr[6]; @@ -907,7 +909,7 @@ static int decode_blockcode(int code, int levels, int *values) static const uint8_t abits_sizes[7] = { 7, 10, 12, 13, 15, 17, 19 }; static const uint8_t abits_levels[7] = { 3, 5, 7, 9, 13, 17, 25 }; -static int dca_subsubframe(DCAContext * s) +static int dca_subsubframe(DCAContext * s, int block_index) { int k, l; int subsubframe = s->current_subsubframe; @@ -915,7 +917,7 @@ static int dca_subsubframe(DCAContext * s) const float *quant_step_table; /* FIXME */ - LOCAL_ALIGNED_16(float, subband_samples, [DCA_PRIM_CHANNELS_MAX], [DCA_SUBBANDS][8]); + float (*subband_samples)[DCA_SUBBANDS][8] = s->subband_samples[block_index]; LOCAL_ALIGNED_16(int, block, [8]); /* @@ -1107,7 +1109,7 @@ static int dca_subframe_footer(DCAContext * s) * @param s pointer to the DCAContext */ -static int dca_decode_block(DCAContext * s) +static int dca_decode_block(DCAContext * s, int block_index) { /* Sanity check */ @@ -1130,7 +1132,7 @@ static int dca_decode_block(DCAContext * s) #ifdef TRACE av_log(s->avctx, AV_LOG_DEBUG, "DSYNC dca_subsubframe\n"); #endif - if (dca_subsubframe(s)) + if (dca_subsubframe(s, block_index)) return -1; /* Update state */ @@ -1263,7 +1265,7 @@ static int dca_decode_frame(AVCodecContext * avctx, return -1; *data_size = 256 / 8 * s->sample_blocks * sizeof(int16_t) * channels; for (i = 0; i < (s->sample_blocks / 8); i++) { - dca_decode_block(s); + dca_decode_block(s, i); s->dsp.float_to_int16_interleave(samples, s->samples_chanptr, 256, channels); samples += 256 * channels; } |