---
libavcodec/libfaac.c | 27 ++++++++++++++++++++++++++-
1 files changed, 26 insertions(+), 1 deletions(-)
diff --git a/libavcodec/libfaac.c b/libavcodec/libfaac.c
index 745fee2..9239578 100644
--- a/libavcodec/libfaac.c
+++ b/libavcodec/libfaac.c
@@ -28,6 +28,7 @@
#include "libavutil/channel_layout.h"
#include "libavutil/common.h"
+#include "libavutil/opt.h"
#include "avcodec.h"
#include "audio_frame_queue.h"
#include "internal.h"
@@ -37,10 +38,26 @@
#define FAAC_DELAY_SAMPLES 1024
typedef struct FaacAudioContext {
+ AVClass *class;
+ int mpeg_version;
faacEncHandle faac_handle;
AudioFrameQueue afq;
} FaacAudioContext;
+#define OFFSET(x) offsetof(FaacAudioContext, x)
+#define AE AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
+
+static const AVOption options[] = {
+ { "mpeg_version", "Set the MPEG version (2 or 4)", OFFSET(mpeg_version),
AV_OPT_TYPE_INT, { .i64 = 4 }, 2, 4, AE },
+ { NULL },
+};
+
+static const AVClass class = {
+ .class_name = "libfaac",
+ .item_name = av_default_item_name,
+ .option = options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
static av_cold int Faac_encode_close(AVCodecContext *avctx)
{
@@ -116,7 +133,14 @@ static av_cold int Faac_encode_init(AVCodecContext *avctx)
ret = AVERROR(EINVAL);
goto error;
}
- faac_cfg->mpegVersion = MPEG4;
+ switch (s->mpeg_version) {
+ case 2: faac_cfg->mpegVersion = MPEG2; break;
+ case 4: faac_cfg->mpegVersion = MPEG4; break;
+ default:
+ av_log(avctx, AV_LOG_ERROR, "invalid MPEG version: %d\n",
+ s->mpeg_version);
+ return AVERROR(EINVAL);
+ }
faac_cfg->useTns = 0;
faac_cfg->allowMidside = 1;
faac_cfg->bitRate = avctx->bit_rate / avctx->channels;
@@ -248,4 +272,5 @@ AVCodec ff_libfaac_encoder = {
.long_name = NULL_IF_CONFIG_SMALL("libfaac AAC (Advanced Audio
Coding)"),
.profiles = NULL_IF_CONFIG_SMALL(profiles),
.channel_layouts = faac_channel_layouts,
+ .priv_class = &class,
};
--
1.7.1
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