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Allocate all large per-channel arrays using av_malloc(). 

Decreases memory usage for less than 6 channels.

Originally committed as revision 26026 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Justin Ruggles 2010-12-16 02:33:02 +00:00
parent aa645b9888
commit b6f6204db9
1 changed files with 80 additions and 14 deletions
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94
libavcodec/ac3enc.c
View File

@ -59,18 +59,18 @@ typedef struct IComplex {
* Data for a single audio block.
*/
typedef struct AC3Block {
uint8_t **bap; ///< bap for each channel in this block
int32_t mdct_coef[AC3_MAX_CHANNELS][AC3_MAX_COEFS];
uint8_t exp[AC3_MAX_CHANNELS][AC3_MAX_COEFS];
uint8_t exp_strategy[AC3_MAX_CHANNELS];
uint8_t encoded_exp[AC3_MAX_CHANNELS][AC3_MAX_COEFS];
uint8_t num_exp_groups[AC3_MAX_CHANNELS];
uint8_t grouped_exp[AC3_MAX_CHANNELS][AC3_MAX_EXP_GROUPS];
int16_t psd[AC3_MAX_CHANNELS][AC3_MAX_COEFS];
int16_t band_psd[AC3_MAX_CHANNELS][AC3_CRITICAL_BANDS];
int16_t mask[AC3_MAX_CHANNELS][AC3_CRITICAL_BANDS];
int8_t exp_shift[AC3_MAX_CHANNELS];
uint16_t qmant[AC3_MAX_CHANNELS][AC3_MAX_COEFS];
uint8_t **bap; ///< bit allocation pointers (bap)
int32_t **mdct_coef; ///< MDCT coefficients
uint8_t **exp; ///< original exponents
uint8_t **encoded_exp; ///< encoded exponents
uint8_t **grouped_exp; ///< grouped exponents
int16_t **psd; ///< psd per frequency bin
int16_t **band_psd; ///< psd per critical band
int16_t **mask; ///< masking curve
uint16_t **qmant; ///< quantized mantissas
uint8_t num_exp_groups[AC3_MAX_CHANNELS]; ///< number of exponent groups
uint8_t exp_strategy[AC3_MAX_CHANNELS]; ///< exponent strategies
int8_t exp_shift[AC3_MAX_CHANNELS]; ///< exponent shift values
} AC3Block;
/**
@ -123,6 +123,14 @@ typedef struct AC3EncodeContext {
int16_t **planar_samples;
uint8_t *bap_buffer;
uint8_t *bap1_buffer;
int32_t *mdct_coef_buffer;
uint8_t *exp_buffer;
uint8_t *encoded_exp_buffer;
uint8_t *grouped_exp_buffer;
int16_t *psd_buffer;
int16_t *band_psd_buffer;
int16_t *mask_buffer;
uint16_t *qmant_buffer;
DECLARE_ALIGNED(16, int16_t, windowed_samples)[AC3_WINDOW_SIZE];
} AC3EncodeContext;
@ -1473,9 +1481,25 @@ static av_cold int ac3_encode_close(AVCodecContext *avctx)
av_freep(&s->planar_samples);
av_freep(&s->bap_buffer);
av_freep(&s->bap1_buffer);
av_freep(&s->mdct_coef_buffer);
av_freep(&s->exp_buffer);
av_freep(&s->encoded_exp_buffer);
av_freep(&s->grouped_exp_buffer);
av_freep(&s->psd_buffer);
av_freep(&s->band_psd_buffer);
av_freep(&s->mask_buffer);
av_freep(&s->qmant_buffer);
for (blk = 0; blk < AC3_MAX_BLOCKS; blk++) {
AC3Block *block = &s->blocks[blk];
av_freep(&block->bap);
av_freep(&block->mdct_coef);
av_freep(&block->exp);
av_freep(&block->encoded_exp);
av_freep(&block->grouped_exp);
av_freep(&block->psd);
av_freep(&block->band_psd);
av_freep(&block->mask);
av_freep(&block->qmant);
}
av_freep(&avctx->coded_frame);
@ -1624,13 +1648,55 @@ static av_cold int allocate_buffers(AVCodecContext *avctx)
AC3_MAX_COEFS * sizeof(*s->bap_buffer), alloc_fail);
FF_ALLOC_OR_GOTO(avctx, s->bap1_buffer, AC3_MAX_BLOCKS * s->channels *
AC3_MAX_COEFS * sizeof(*s->bap1_buffer), alloc_fail);
FF_ALLOC_OR_GOTO(avctx, s->mdct_coef_buffer, AC3_MAX_BLOCKS * s->channels *
AC3_MAX_COEFS * sizeof(*s->mdct_coef_buffer), alloc_fail);
FF_ALLOC_OR_GOTO(avctx, s->exp_buffer, AC3_MAX_BLOCKS * s->channels *
AC3_MAX_COEFS * sizeof(*s->exp_buffer), alloc_fail);
FF_ALLOC_OR_GOTO(avctx, s->encoded_exp_buffer, AC3_MAX_BLOCKS * s->channels *
AC3_MAX_COEFS * sizeof(*s->encoded_exp_buffer), alloc_fail);
FF_ALLOC_OR_GOTO(avctx, s->grouped_exp_buffer, AC3_MAX_BLOCKS * s->channels *
128 * sizeof(*s->grouped_exp_buffer), alloc_fail);
FF_ALLOC_OR_GOTO(avctx, s->psd_buffer, AC3_MAX_BLOCKS * s->channels *
AC3_MAX_COEFS * sizeof(*s->psd_buffer), alloc_fail);
FF_ALLOC_OR_GOTO(avctx, s->band_psd_buffer, AC3_MAX_BLOCKS * s->channels *
64 * sizeof(*s->band_psd_buffer), alloc_fail);
FF_ALLOC_OR_GOTO(avctx, s->mask_buffer, AC3_MAX_BLOCKS * s->channels *
64 * sizeof(*s->mask_buffer), alloc_fail);
FF_ALLOC_OR_GOTO(avctx, s->qmant_buffer, AC3_MAX_BLOCKS * s->channels *
AC3_MAX_COEFS * sizeof(*s->qmant_buffer), alloc_fail);
for (blk = 0; blk < AC3_MAX_BLOCKS; blk++) {
AC3Block *block = &s->blocks[blk];
FF_ALLOC_OR_GOTO(avctx, block->bap, s->channels * sizeof(*block->bap),
alloc_fail);
FF_ALLOCZ_OR_GOTO(avctx, block->mdct_coef, s->channels * sizeof(*block->mdct_coef),
alloc_fail);
FF_ALLOCZ_OR_GOTO(avctx, block->exp, s->channels * sizeof(*block->exp),
alloc_fail);
FF_ALLOCZ_OR_GOTO(avctx, block->encoded_exp, s->channels * sizeof(*block->encoded_exp),
alloc_fail);
FF_ALLOCZ_OR_GOTO(avctx, block->grouped_exp, s->channels * sizeof(*block->grouped_exp),
alloc_fail);
FF_ALLOCZ_OR_GOTO(avctx, block->psd, s->channels * sizeof(*block->psd),
alloc_fail);
FF_ALLOCZ_OR_GOTO(avctx, block->band_psd, s->channels * sizeof(*block->band_psd),
alloc_fail);
FF_ALLOCZ_OR_GOTO(avctx, block->mask, s->channels * sizeof(*block->mask),
alloc_fail);
FF_ALLOCZ_OR_GOTO(avctx, block->qmant, s->channels * sizeof(*block->qmant),
alloc_fail);
for (ch = 0; ch < s->channels; ch++) {
block->bap[ch] = &s->bap_buffer [AC3_MAX_COEFS * (blk * s->channels + ch)];
block->mdct_coef[ch] = &s->mdct_coef_buffer [AC3_MAX_COEFS * (blk * s->channels + ch)];
block->exp[ch] = &s->exp_buffer [AC3_MAX_COEFS * (blk * s->channels + ch)];
block->encoded_exp[ch] = &s->encoded_exp_buffer[AC3_MAX_COEFS * (blk * s->channels + ch)];
block->grouped_exp[ch] = &s->grouped_exp_buffer[128 * (blk * s->channels + ch)];
block->psd[ch] = &s->psd_buffer [AC3_MAX_COEFS * (blk * s->channels + ch)];
block->band_psd[ch] = &s->band_psd_buffer [64 * (blk * s->channels + ch)];
block->mask[ch] = &s->mask_buffer [64 * (blk * s->channels + ch)];
block->qmant[ch] = &s->qmant_buffer [AC3_MAX_COEFS * (blk * s->channels + ch)];
}
}
s->blocks[0].bap[0] = NULL;
reset_block_bap(s);
return 0;
alloc_fail: