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Allocate planar_samples using av_mallocz().

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Lowers memory usage when encoding less than 6 channels.

Originally committed as revision 26024 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Justin Ruggles 2010-12-16 02:32:55 +00:00
parent 171bc51c9b
commit e8d21fba3f
1 changed files with 13 additions and 3 deletions
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16
libavcodec/ac3enc.c
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@ -120,7 +120,7 @@ typedef struct AC3EncodeContext {
int mant1_cnt, mant2_cnt, mant4_cnt; ///< mantissa counts for bap=1,2,4
uint16_t *qmant1_ptr, *qmant2_ptr, *qmant4_ptr; ///< mantissa pointers for bap=1,2,4
int16_t planar_samples[AC3_MAX_CHANNELS][AC3_BLOCK_SIZE+AC3_FRAME_SIZE];
int16_t **planar_samples;
int16_t windowed_samples[AC3_WINDOW_SIZE];
uint8_t *bap_buffer;
uint8_t *bap1_buffer;
@ -1464,9 +1464,12 @@ static int ac3_encode_frame(AVCodecContext *avctx,
*/
static av_cold int ac3_encode_close(AVCodecContext *avctx)
{
int blk;
int blk, ch;
AC3EncodeContext *s = avctx->priv_data;
for (ch = 0; ch < s->channels; ch++)
av_freep(&s->planar_samples[ch]);
av_freep(&s->planar_samples);
av_freep(&s->bap_buffer);
av_freep(&s->bap1_buffer);
for (blk = 0; blk < AC3_MAX_BLOCKS; blk++) {
@ -1606,9 +1609,16 @@ static av_cold void set_bandwidth(AC3EncodeContext *s, int cutoff)
static av_cold int allocate_buffers(AVCodecContext *avctx)
{
int blk;
int blk, ch;
AC3EncodeContext *s = avctx->priv_data;
FF_ALLOC_OR_GOTO(avctx, s->planar_samples, s->channels * sizeof(*s->planar_samples),
alloc_fail);
for (ch = 0; ch < s->channels; ch++) {
FF_ALLOCZ_OR_GOTO(avctx, s->planar_samples[ch],
(AC3_FRAME_SIZE+AC3_BLOCK_SIZE) * sizeof(**s->planar_samples),
alloc_fail);
}
FF_ALLOC_OR_GOTO(avctx, s->bap_buffer, AC3_MAX_BLOCKS * s->channels *
AC3_MAX_COEFS * sizeof(*s->bap_buffer), alloc_fail);
FF_ALLOC_OR_GOTO(avctx, s->bap1_buffer, AC3_MAX_BLOCKS * s->channels *