Chiebot-Mirror
/
FFmpeg
mirror of https://github.com/FFmpeg/FFmpeg.git
8
0
Fork 0
Code Issues Projects Releases Wiki Activity

libfdk-aacdec: Reduce the default decoder delay by one frame

Browse Source 
The default error concealment method if none is set via
aacDecoder_SetParam(AAC_CONCEAL_METHOD) is set in
CConcealment_InitCommonData within the fdk-aac library
and is set to Energy Interpolation. This method requires one frame
delay to the output. To reduce the default decoder output delay and
avoid missing the last frame in file based decoding, use Noise
Substitution as the default concealment method.

Signed-off-by: Omer Osman <omer.osman@iis.fraunhofer.de>
Signed-off-by: Martin Storsjö <martin@martin.st>
pull/76/merge
Omer Osman 11 years ago committed by Martin Storsjö
parent 391ecc961c
commit e0bfe34ea8
2 changed files with 6 additions and 10 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 14
      libavcodec/libfdk-aacdec.c
  2. 2
      libavcodec/version.h

14
libavcodec/libfdk-aacdec.c
Unescape View File

@ -26,7 +26,6 @@
#include "internal.h"
enum ConcealMethod {
CONCEAL_METHOD_DEFAULT = -1,
CONCEAL_METHOD_SPECTRAL_MUTING = 0,
CONCEAL_METHOD_NOISE_SUBSTITUTION = 1,
CONCEAL_METHOD_ENERGY_INTERPOLATION = 2,
@ -43,8 +42,7 @@ typedef struct FDKAACDecContext {
#define OFFSET(x) offsetof(FDKAACDecContext, x)
#define AD AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM
static const AVOption fdk_aac_dec_options[] = {
{ "conceal", "Error concealment method", OFFSET(conceal_method), AV_OPT_TYPE_INT, { .i64 = CONCEAL_METHOD_DEFAULT }, CONCEAL_METHOD_DEFAULT, CONCEAL_METHOD_NB - 1, AD, "conceal" },
{ "default", "Default", 0, AV_OPT_TYPE_CONST, { .i64 = CONCEAL_METHOD_DEFAULT }, INT_MIN, INT_MAX, AD, "conceal" },
{ "conceal", "Error concealment method", OFFSET(conceal_method), AV_OPT_TYPE_INT, { .i64 = CONCEAL_METHOD_NOISE_SUBSTITUTION }, CONCEAL_METHOD_SPECTRAL_MUTING, CONCEAL_METHOD_NB - 1, AD, "conceal" },
{ "spectral", "Spectral muting", 0, AV_OPT_TYPE_CONST, { .i64 = CONCEAL_METHOD_SPECTRAL_MUTING }, INT_MIN, INT_MAX, AD, "conceal" },
{ "noise", "Noise Substitution", 0, AV_OPT_TYPE_CONST, { .i64 = CONCEAL_METHOD_NOISE_SUBSTITUTION }, INT_MIN, INT_MAX, AD, "conceal" },
{ "energy", "Energy Interpolation", 0, AV_OPT_TYPE_CONST, { .i64 = CONCEAL_METHOD_ENERGY_INTERPOLATION }, INT_MIN, INT_MAX, AD, "conceal" },
@ -195,12 +193,10 @@ static av_cold int fdk_aac_decode_init(AVCodecContext *avctx)
}
}
if (s->conceal_method != CONCEAL_METHOD_DEFAULT) {
if ((err = aacDecoder_SetParam(s->handle, AAC_CONCEAL_METHOD,
s->conceal_method)) != AAC_DEC_OK) {
av_log(avctx, AV_LOG_ERROR, "Unable to set error concealment method\n");
return AVERROR_UNKNOWN;
}
if ((err = aacDecoder_SetParam(s->handle, AAC_CONCEAL_METHOD,
s->conceal_method)) != AAC_DEC_OK) {
av_log(avctx, AV_LOG_ERROR, "Unable to set error concealment method\n");
return AVERROR_UNKNOWN;
}
avctx->sample_fmt = AV_SAMPLE_FMT_S16;

2
libavcodec/version.h
Unescape View File

@ -30,7 +30,7 @@
#define LIBAVCODEC_VERSION_MAJOR 55
#define LIBAVCODEC_VERSION_MINOR 55
#define LIBAVCODEC_VERSION_MICRO 0
#define LIBAVCODEC_VERSION_MICRO 1
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
LIBAVCODEC_VERSION_MINOR, \

Write Preview
Loading…
Cancel
Save