diff options
author | Ben Avison <bavison@riscosopen.org> | 2014-03-20 22:58:36 +0400 |
---|---|---|
committer | Martin Storsjö <martin@martin.st> | 2014-03-26 21:54:05 +0400 |
commit | 4e5aa080bb8d83cb6de1ffbdd7b37ec34bc6b30b (patch) | |
tree | 8924b1ed73324364179c0ab0602a59a03f616471 /libavcodec | |
parent | 15a29c39d9ef15b0783c04b3228e1c55f6701ee3 (diff) |
truehd: break out part of rematrix_channels into platform-specific callback.
Verified with profiling that this doesn't have a measurable effect upon
overall performance.
Signed-off-by: Martin Storsjö <martin@martin.st>
Diffstat (limited to 'libavcodec')
-rw-r--r-- | libavcodec/mlpdec.c | 37 | ||||
-rw-r--r-- | libavcodec/mlpdsp.c | 33 | ||||
-rw-r--r-- | libavcodec/mlpdsp.h | 23 |
3 files changed, 68 insertions, 25 deletions
diff --git a/libavcodec/mlpdec.c b/libavcodec/mlpdec.c index ed5a6ac2fc..c0f2d6a7fa 100644 --- a/libavcodec/mlpdec.c +++ b/libavcodec/mlpdec.c @@ -978,7 +978,7 @@ static void fill_noise_buffer(MLPDecodeContext *m, unsigned int substr) static void rematrix_channels(MLPDecodeContext *m, unsigned int substr) { SubStream *s = &m->substream[substr]; - unsigned int mat, src_ch, i; + unsigned int mat; unsigned int maxchan; maxchan = s->max_matrix_channel; @@ -990,31 +990,18 @@ static void rematrix_channels(MLPDecodeContext *m, unsigned int substr) } for (mat = 0; mat < s->num_primitive_matrices; mat++) { - int matrix_noise_shift = s->matrix_noise_shift[mat]; unsigned int dest_ch = s->matrix_out_ch[mat]; - int32_t mask = MSB_MASK(s->quant_step_size[dest_ch]); - int32_t *coeffs = s->matrix_coeff[mat]; - int index = s->num_primitive_matrices - mat; - int index2 = 2 * index + 1; - - /* TODO: DSPContext? */ - - for (i = 0; i < s->blockpos; i++) { - int32_t bypassed_lsb = m->bypassed_lsbs[i][mat]; - int32_t *samples = m->sample_buffer[i]; - int64_t accum = 0; - - for (src_ch = 0; src_ch <= maxchan; src_ch++) - accum += (int64_t) samples[src_ch] * coeffs[src_ch]; - - if (matrix_noise_shift) { - index &= m->access_unit_size_pow2 - 1; - accum += m->noise_buffer[index] << (matrix_noise_shift + 7); - index += index2; - } - - samples[dest_ch] = ((accum >> 14) & mask) + bypassed_lsb; - } + m->dsp.mlp_rematrix_channel(&m->sample_buffer[0][0], + s->matrix_coeff[mat], + &m->bypassed_lsbs[0][mat], + m->noise_buffer, + s->num_primitive_matrices - mat, + dest_ch, + s->blockpos, + maxchan, + s->matrix_noise_shift[mat], + m->access_unit_size_pow2, + MSB_MASK(s->quant_step_size[dest_ch])); } } diff --git a/libavcodec/mlpdsp.c b/libavcodec/mlpdsp.c index 151cf8346c..dfa13af388 100644 --- a/libavcodec/mlpdsp.c +++ b/libavcodec/mlpdsp.c @@ -57,9 +57,42 @@ static void mlp_filter_channel(int32_t *state, const int32_t *coeff, } } +void ff_mlp_rematrix_channel(int32_t *samples, + const int32_t *coeffs, + const uint8_t *bypassed_lsbs, + const int8_t *noise_buffer, + int index, + unsigned int dest_ch, + uint16_t blockpos, + unsigned int maxchan, + int matrix_noise_shift, + int access_unit_size_pow2, + int32_t mask) +{ + unsigned int src_ch, i; + int index2 = 2 * index + 1; + for (i = 0; i < blockpos; i++) { + int64_t accum = 0; + + for (src_ch = 0; src_ch <= maxchan; src_ch++) + accum += (int64_t) samples[src_ch] * coeffs[src_ch]; + + if (matrix_noise_shift) { + index &= access_unit_size_pow2 - 1; + accum += noise_buffer[index] << (matrix_noise_shift + 7); + index += index2; + } + + samples[dest_ch] = ((accum >> 14) & mask) + *bypassed_lsbs; + bypassed_lsbs += MAX_CHANNELS; + samples += MAX_CHANNELS; + } +} + av_cold void ff_mlpdsp_init(MLPDSPContext *c) { c->mlp_filter_channel = mlp_filter_channel; + c->mlp_rematrix_channel = ff_mlp_rematrix_channel; if (ARCH_ARM) ff_mlpdsp_init_arm(c); if (ARCH_X86) diff --git a/libavcodec/mlpdsp.h b/libavcodec/mlpdsp.h index c985a1730a..bd864d9e05 100644 --- a/libavcodec/mlpdsp.h +++ b/libavcodec/mlpdsp.h @@ -24,11 +24,34 @@ #include <stdint.h> +void ff_mlp_rematrix_channel(int32_t *samples, + const int32_t *coeffs, + const uint8_t *bypassed_lsbs, + const int8_t *noise_buffer, + int index, + unsigned int dest_ch, + uint16_t blockpos, + unsigned int maxchan, + int matrix_noise_shift, + int access_unit_size_pow2, + int32_t mask); + typedef struct MLPDSPContext { void (*mlp_filter_channel)(int32_t *state, const int32_t *coeff, int firorder, int iirorder, unsigned int filter_shift, int32_t mask, int blocksize, int32_t *sample_buffer); + void (*mlp_rematrix_channel)(int32_t *samples, + const int32_t *coeffs, + const uint8_t *bypassed_lsbs, + const int8_t *noise_buffer, + int index, + unsigned int dest_ch, + uint16_t blockpos, + unsigned int maxchan, + int matrix_noise_shift, + int access_unit_size_pow2, + int32_t mask); } MLPDSPContext; void ff_mlpdsp_init(MLPDSPContext *c); |