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libfdk-aacdec: Allow explicitly disabling the DRC reference level option

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Previously, it was always left in the automatic mode, if the option
was set to the only special (negative) value. Now there's two separate
special values for this option, -1 for automatic (metadata based)
and -2 for explicitly disabled.

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö 2020-02-04 16:23:27 +02:00
parent 5835adee24
commit e8cbdb9adb
2 changed files with 9 additions and 3 deletions
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10
libavcodec/libfdk-aacdec.c
View File

@ -76,8 +76,8 @@ static const AVOption fdk_aac_dec_options[] = {
OFFSET(drc_boost), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 127, AD, NULL },
{ "drc_cut", "Dynamic Range Control: attenuation factor, where [0] is none and [127] is max compression",
OFFSET(drc_cut), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 127, AD, NULL },
{ "drc_level", "Dynamic Range Control: reference level, quantized to 0.25dB steps where [0] is 0dB and [127] is -31.75dB",
OFFSET(drc_level), AV_OPT_TYPE_INT, { .i64 = -1}, -1, 127, AD, NULL },
{ "drc_level", "Dynamic Range Control: reference level, quantized to 0.25dB steps where [0] is 0dB and [127] is -31.75dB, -1 for auto, and -2 for disabled",
OFFSET(drc_level), AV_OPT_TYPE_INT, { .i64 = -1}, -2, 127, AD, NULL },
{ "drc_heavy", "Dynamic Range Control: heavy compression, where [1] is on (RF mode) and [0] is off",
OFFSET(drc_heavy), AV_OPT_TYPE_INT, { .i64 = -1}, -1, 1, AD, NULL },
#if FDKDEC_VER_AT_LEAST(2, 5) // 2.5.10
@ -299,6 +299,12 @@ static av_cold int fdk_aac_decode_init(AVCodecContext *avctx)
}
if (s->drc_level != -1) {
// This option defaults to -1, i.e. not calling
// aacDecoder_SetParam(AAC_DRC_REFERENCE_LEVEL) at all, which defaults
// to the level from DRC metadata, if available. The user can set
// -drc_level -2, which calls aacDecoder_SetParam(
// AAC_DRC_REFERENCE_LEVEL) with a negative value, which then
// explicitly disables the feature.
if (aacDecoder_SetParam(s->handle, AAC_DRC_REFERENCE_LEVEL, s->drc_level) != AAC_DEC_OK) {
av_log(avctx, AV_LOG_ERROR, "Unable to set DRC reference level in the decoder\n");
return AVERROR_UNKNOWN;

2
libavcodec/version.h
View File

@ -29,7 +29,7 @@
#define LIBAVCODEC_VERSION_MAJOR 58
#define LIBAVCODEC_VERSION_MINOR 68
#define LIBAVCODEC_VERSION_MICRO 100
#define LIBAVCODEC_VERSION_MICRO 101
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
LIBAVCODEC_VERSION_MINOR, \