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truehd: break out part of output_data into platform-specific callback.

Browse Source 
Verified with profiling that this doesn't have a measurable effect upon
overall performance.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
pull/64/head
Ben Avison 11 years ago committed by Michael Niedermayer
parent 44dc373d4a
commit b01a2562ae
3 changed files with 83 additions and 17 deletions
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  1. 40
      libavcodec/mlpdec.c
  2. 38
      libavcodec/mlpdsp.c
  3. 22
      libavcodec/mlpdsp.h

40
libavcodec/mlpdec.c
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@ -363,6 +363,10 @@ static int read_major_sync(MLPDecodeContext *m, GetBitContext *gb)
m->avctx->sample_fmt = AV_SAMPLE_FMT_S32;
else
m->avctx->sample_fmt = AV_SAMPLE_FMT_S16;
m->dsp.mlp_pack_output = m->dsp.mlp_select_pack_output(m->substream[m->max_decoded_substream].ch_assign,
m->substream[m->max_decoded_substream].output_shift,
m->substream[m->max_decoded_substream].max_matrix_channel,
m->avctx->sample_fmt == AV_SAMPLE_FMT_S32);
m->params_valid = 1;
for (substr = 0; substr < MAX_SUBSTREAMS; substr++)
@ -612,6 +616,10 @@ FF_ENABLE_DEPRECATION_WARNINGS
if (substr == m->max_decoded_substream) {
m->avctx->channels = s->max_matrix_channel + 1;
m->avctx->channel_layout = s->ch_layout;
m->dsp.mlp_pack_output = m->dsp.mlp_select_pack_output(s->ch_assign,
s->output_shift,
s->max_matrix_channel,
m->avctx->sample_fmt == AV_SAMPLE_FMT_S32);
if (m->avctx->codec_id == AV_CODEC_ID_MLP && m->needs_reordering) {
if (m->avctx->channel_layout == (AV_CH_LAYOUT_QUAD|AV_CH_LOW_FREQUENCY) ||
@ -857,9 +865,15 @@ static int read_decoding_params(MLPDecodeContext *m, GetBitContext *gbp,
return ret;
if (s->param_presence_flags & PARAM_OUTSHIFT)
if (get_bits1(gbp))
if (get_bits1(gbp)) {
for (ch = 0; ch <= s->max_matrix_channel; ch++)
s->output_shift[ch] = get_sbits(gbp, 4);
if (substr == m->max_decoded_substream)
m->dsp.mlp_pack_output = m->dsp.mlp_select_pack_output(s->ch_assign,
s->output_shift,
s->max_matrix_channel,
m->avctx->sample_fmt == AV_SAMPLE_FMT_S32);
}
if (s->param_presence_flags & PARAM_QUANTSTEP)
if (get_bits1(gbp))
@ -1058,9 +1072,6 @@ static int output_data(MLPDecodeContext *m, unsigned int substr,
{
AVCodecContext *avctx = m->avctx;
SubStream *s = &m->substream[substr];
unsigned int i, out_ch = 0;
int32_t *data_32;
int16_t *data_16;
int ret;
int is32 = (m->avctx->sample_fmt == AV_SAMPLE_FMT_S32);
@ -1078,19 +1089,14 @@ static int output_data(MLPDecodeContext *m, unsigned int substr,
frame->nb_samples = s->blockpos;
if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
return ret;
data_32 = (int32_t *)frame->data[0];
data_16 = (int16_t *)frame->data[0];
for (i = 0; i < s->blockpos; i++) {
for (out_ch = 0; out_ch <= s->max_matrix_channel; out_ch++) {
int mat_ch = s->ch_assign[out_ch];
int32_t sample = m->sample_buffer[i][mat_ch]
<< s->output_shift[mat_ch];
s->lossless_check_data ^= (sample & 0xffffff) << mat_ch;
if (is32) *data_32++ = sample << 8;
else *data_16++ = sample >> 8;
}
}
s->lossless_check_data = m->dsp.mlp_pack_output(s->lossless_check_data,
s->blockpos,
m->sample_buffer,
frame->data[0],
s->ch_assign,
s->output_shift,
s->max_matrix_channel,
is32);
/* Update matrix encoding side data */
if ((ret = ff_side_data_update_matrix_encoding(frame, s->matrix_encoding)) < 0)

38
libavcodec/mlpdsp.c
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@ -89,10 +89,48 @@ void ff_mlp_rematrix_channel(int32_t *samples,
}
}
static int32_t (*mlp_select_pack_output(uint8_t *ch_assign,
int8_t *output_shift,
uint8_t max_matrix_channel,
int is32))(int32_t, uint16_t, int32_t (*)[], void *, uint8_t*, int8_t *, uint8_t, int)
{
return ff_mlp_pack_output;
}
int32_t ff_mlp_pack_output(int32_t lossless_check_data,
uint16_t blockpos,
int32_t (*sample_buffer)[MAX_CHANNELS],
void *data,
uint8_t *ch_assign,
int8_t *output_shift,
uint8_t max_matrix_channel,
int is32)
{
unsigned int i, out_ch = 0;
int32_t *data_32 = data;
int16_t *data_16 = data;
for (i = 0; i < blockpos; i++) {
for (out_ch = 0; out_ch <= max_matrix_channel; out_ch++) {
int mat_ch = ch_assign[out_ch];
int32_t sample = sample_buffer[i][mat_ch]
<< output_shift[mat_ch];
lossless_check_data ^= (sample & 0xffffff) << mat_ch;
if (is32)
*data_32++ = sample << 8;
else
*data_16++ = sample >> 8;
}
}
return lossless_check_data;
}
av_cold void ff_mlpdsp_init(MLPDSPContext *c)
{
c->mlp_filter_channel = mlp_filter_channel;
c->mlp_rematrix_channel = ff_mlp_rematrix_channel;
c->mlp_select_pack_output = mlp_select_pack_output;
c->mlp_pack_output = ff_mlp_pack_output;
if (ARCH_ARM)
ff_mlpdsp_init_arm(c);
if (ARCH_X86)

22
libavcodec/mlpdsp.h
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@ -23,6 +23,7 @@
#define AVCODEC_MLPDSP_H
#include <stdint.h>
#include "mlp.h"
void ff_mlp_rematrix_channel(int32_t *samples,
const int32_t *coeffs,
@ -36,6 +37,15 @@ void ff_mlp_rematrix_channel(int32_t *samples,
int access_unit_size_pow2,
int32_t mask);
int32_t ff_mlp_pack_output(int32_t lossless_check_data,
uint16_t blockpos,
int32_t (*sample_buffer)[MAX_CHANNELS],
void *data,
uint8_t *ch_assign,
int8_t *output_shift,
uint8_t max_matrix_channel,
int is32);
typedef struct MLPDSPContext {
void (*mlp_filter_channel)(int32_t *state, const int32_t *coeff,
int firorder, int iirorder,
@ -52,6 +62,18 @@ typedef struct MLPDSPContext {
int matrix_noise_shift,
int access_unit_size_pow2,
int32_t mask);
int32_t (*(*mlp_select_pack_output)(uint8_t *ch_assign,
int8_t *output_shift,
uint8_t max_matrix_channel,
int is32))(int32_t, uint16_t, int32_t (*)[], void *, uint8_t*, int8_t *, uint8_t, int);
int32_t (*mlp_pack_output)(int32_t lossless_check_data,
uint16_t blockpos,
int32_t (*sample_buffer)[MAX_CHANNELS],
void *data,
uint8_t *ch_assign,
int8_t *output_shift,
uint8_t max_matrix_channel,
int is32);
} MLPDSPContext;
void ff_mlpdsp_init(MLPDSPContext *c);

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