#include "flv.h"
#include "internal.h"
#include "metadata.h"
+#include "libavutil/opt.h"
+#include "libavcodec/put_bits.h"
+#include "libavcodec/aacenctab.h"
static const AVCodecTag flv_video_codec_ids[] = {
};
typedef struct FLVContext {
+ AVClass *av_class;
int reserved;
int64_t duration_offset;
int64_t filesize_offset;
AVCodecContext *video_enc;
double framerate;
AVCodecContext *data_enc;
+
+ int flags;
} FLVContext;
typedef struct FLVStreamContext {
if (enc->codec_id == AV_CODEC_ID_AAC) {
avio_w8(pb, get_audio_flags(s, enc));
avio_w8(pb, 0); // AAC sequence header
+
+ if (!enc->extradata_size && flv->flags & 1) {
+ PutBitContext pbc;
+ int samplerate_index;
+ int channels = flv->audio_enc->channels - (flv->audio_enc->channels == 8 ? 1 : 0);
+ uint8_t data[2];
+
+ for (samplerate_index = 0; samplerate_index < 16; samplerate_index++)
+ if (flv->audio_enc->sample_rate == mpeg4audio_sample_rates[samplerate_index])
+ break;
+
+ init_put_bits(&pbc, data, sizeof(data));
+ put_bits(&pbc, 5, flv->audio_enc->profile + 1); //profile
+ put_bits(&pbc, 4, samplerate_index); //sample rate index
+ put_bits(&pbc, 4, channels);
+ put_bits(&pbc, 1, 0); //frame length - 1024 samples
+ put_bits(&pbc, 1, 0); //does not depend on core coder
+ put_bits(&pbc, 1, 0); //is not extension
+ flush_put_bits(&pbc);
+
+ avio_w8(pb, data[0]);
+ avio_w8(pb, data[1]);
+
+ av_log(s, AV_LOG_WARNING, "AAC sequence header: %02x %02x.\n", data[0], data[1]);
+ }
avio_write(pb, enc->extradata, enc->extradata_size);
} else {
avio_w8(pb, enc->codec_tag | FLV_FRAME_KEY); // flags
return pb->error;
}
+static const AVOption options[] = {
+ { "flvflags", "FLV muxer flags", offsetof(FLVContext, flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "flvflags" },
+ { "aac_seq_header_detect", "Put AAC sequence header based on stream data", 0, AV_OPT_TYPE_CONST, {.i64 = 1}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "flvflags" },
+ { NULL },
+};
+
+static const AVClass flv_muxer_class = {
+ .class_name = "flv muxer",
+ .item_name = av_default_item_name,
+ .option = options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+
AVOutputFormat ff_flv_muxer = {
.name = "flv",
.long_name = NULL_IF_CONFIG_SMALL("FLV (Flash Video)"),
},
.flags = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS |
AVFMT_TS_NONSTRICT,
+ .priv_class = &flv_muxer_class,
};