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ac3enc: fix allocation of floating point samples. 

sizeof(SampleType) is different for fixed and float encoders.
This commit is contained in:
Justin Ruggles 2011-06-13 17:44:50 -04:00
parent 35bdaf3d42
commit 99477adc31
3 changed files with 32 additions and 9 deletions
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16
libavcodec/ac3enc.c
View File

@ -2215,15 +2215,9 @@ static av_cold int allocate_buffers(AVCodecContext *avctx)
AC3EncodeContext *s = avctx->priv_data;
int channels = s->channels + 1; /* includes coupling channel */
FF_ALLOC_OR_GOTO(avctx, s->windowed_samples, AC3_WINDOW_SIZE *
sizeof(*s->windowed_samples), alloc_fail);
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);
}
if (s->allocate_sample_buffers(s))
goto alloc_fail;
FF_ALLOC_OR_GOTO(avctx, s->bap_buffer, AC3_MAX_BLOCKS * channels *
AC3_MAX_COEFS * sizeof(*s->bap_buffer), alloc_fail);
FF_ALLOC_OR_GOTO(avctx, s->bap1_buffer, AC3_MAX_BLOCKS * channels *
@ -2323,6 +2317,8 @@ av_cold int ff_ac3_encode_init(AVCodecContext *avctx)
AC3EncodeContext *s = avctx->priv_data;
int ret, frame_size_58;
s->avctx = avctx;
s->eac3 = avctx->codec_id == CODEC_ID_EAC3;
avctx->frame_size = AC3_FRAME_SIZE;
@ -2355,6 +2351,7 @@ av_cold int ff_ac3_encode_init(AVCodecContext *avctx)
s->apply_window = ff_ac3_fixed_apply_window;
s->normalize_samples = ff_ac3_fixed_normalize_samples;
s->scale_coefficients = ff_ac3_fixed_scale_coefficients;
s->allocate_sample_buffers = ff_ac3_fixed_allocate_sample_buffers;
s->deinterleave_input_samples = ff_ac3_fixed_deinterleave_input_samples;
s->apply_mdct = ff_ac3_fixed_apply_mdct;
s->apply_channel_coupling = ff_ac3_fixed_apply_channel_coupling;
@ -2364,6 +2361,7 @@ av_cold int ff_ac3_encode_init(AVCodecContext *avctx)
s->mdct_init = ff_ac3_float_mdct_init;
s->apply_window = ff_ac3_float_apply_window;
s->scale_coefficients = ff_ac3_float_scale_coefficients;
s->allocate_sample_buffers = ff_ac3_float_allocate_sample_buffers;
s->deinterleave_input_samples = ff_ac3_float_deinterleave_input_samples;
s->apply_mdct = ff_ac3_float_apply_mdct;
s->apply_channel_coupling = ff_ac3_float_apply_channel_coupling;

5
libavcodec/ac3enc.h
View File

@ -135,6 +135,7 @@ typedef struct AC3Block {
typedef struct AC3EncodeContext {
AVClass *av_class; ///< AVClass used for AVOption
AC3EncOptions options; ///< encoding options
AVCodecContext *avctx; ///< parent AVCodecContext
PutBitContext pb; ///< bitstream writer context
DSPContext dsp;
AC3DSPContext ac3dsp; ///< AC-3 optimized functions
@ -230,6 +231,7 @@ typedef struct AC3EncodeContext {
void (*scale_coefficients)(struct AC3EncodeContext *s);
/* fixed vs. float templated function pointers */
int (*allocate_sample_buffers)(struct AC3EncodeContext *s);
void (*deinterleave_input_samples)(struct AC3EncodeContext *s,
const SampleType *samples);
void (*apply_mdct)(struct AC3EncodeContext *s);
@ -276,6 +278,9 @@ void ff_ac3_float_scale_coefficients(AC3EncodeContext *s);
/* prototypes for functions in ac3enc_template.c */
int ff_ac3_fixed_allocate_sample_buffers(AC3EncodeContext *s);
int ff_ac3_float_allocate_sample_buffers(AC3EncodeContext *s);
void ff_ac3_fixed_deinterleave_input_samples(AC3EncodeContext *s,
const SampleType *samples);
void ff_ac3_float_deinterleave_input_samples(AC3EncodeContext *s,

20
libavcodec/ac3enc_template.c
View File

@ -31,6 +31,26 @@
#include "ac3enc.h"
int AC3_NAME(allocate_sample_buffers)(AC3EncodeContext *s)
{
int ch;
FF_ALLOC_OR_GOTO(s->avctx, s->windowed_samples, AC3_WINDOW_SIZE *
sizeof(*s->windowed_samples), alloc_fail);
FF_ALLOC_OR_GOTO(s->avctx, s->planar_samples, s->channels * sizeof(*s->planar_samples),
alloc_fail);
for (ch = 0; ch < s->channels; ch++) {
FF_ALLOCZ_OR_GOTO(s->avctx, s->planar_samples[ch],
(AC3_FRAME_SIZE+AC3_BLOCK_SIZE) * sizeof(**s->planar_samples),
alloc_fail);
}
return 0;
alloc_fail:
return AVERROR(ENOMEM);
}
/**
* Deinterleave input samples.
* Channels are reordered from Libav's default order to AC-3 order.