{ AV_CODEC_ID_FLASHSV, FLV_CODECID_SCREEN },
{ AV_CODEC_ID_FLASHSV2, FLV_CODECID_SCREEN2 },
{ AV_CODEC_ID_VP6F, FLV_CODECID_VP6 },
+ { AV_CODEC_ID_VP6A, FLV_CODECID_VP6A },
{ AV_CODEC_ID_H264, FLV_CODECID_H264 },
{ AV_CODEC_ID_NONE, 0 }
};
int64_t filesize_offset;
int64_t duration;
int64_t delay; ///< first dts delay (needed for AVC & Speex)
+
+ AVCodecContext *audio_enc;
+ AVCodecContext *video_enc;
+ double framerate;
+ AVCodecContext *data_enc;
} FLVContext;
typedef struct FLVStreamContext {
avio_w8(pb, !!b);
}
-static int flv_write_header(AVFormatContext *s)
+static void write_metadata(AVFormatContext *s, unsigned int ts)
{
AVIOContext *pb = s->pb;
FLVContext *flv = s->priv_data;
- AVCodecContext *audio_enc = NULL, *video_enc = NULL, *data_enc = NULL;
- int i, metadata_count = 0;
- double framerate = 0.0;
+ int metadata_count = 0;
int64_t metadata_size_pos, data_size, metadata_count_pos;
AVDictionaryEntry *tag = NULL;
- for (i = 0; i < s->nb_streams; i++) {
- AVCodecContext *enc = s->streams[i]->codec;
- FLVStreamContext *sc;
- switch (enc->codec_type) {
- case AVMEDIA_TYPE_VIDEO:
- if (s->streams[i]->avg_frame_rate.den &&
- s->streams[i]->avg_frame_rate.num) {
- framerate = av_q2d(s->streams[i]->avg_frame_rate);
- } else {
- framerate = 1 / av_q2d(s->streams[i]->codec->time_base);
- }
- if (video_enc) {
- av_log(s, AV_LOG_ERROR,
- "at most one video stream is supported in flv\n");
- return AVERROR(EINVAL);
- }
- video_enc = enc;
- if (enc->codec_tag == 0) {
- av_log(s, AV_LOG_ERROR, "video codec not compatible with flv\n");
- return -1;
- }
- break;
- case AVMEDIA_TYPE_AUDIO:
- if (audio_enc) {
- av_log(s, AV_LOG_ERROR,
- "at most one audio stream is supported in flv\n");
- return AVERROR(EINVAL);
- }
- audio_enc = enc;
- if (get_audio_flags(s, enc) < 0)
- return AVERROR_INVALIDDATA;
- break;
- case AVMEDIA_TYPE_DATA:
- if (enc->codec_id != AV_CODEC_ID_TEXT) {
- av_log(s, AV_LOG_ERROR, "codec not compatible with flv\n");
- return AVERROR_INVALIDDATA;
- }
- data_enc = enc;
- break;
- default:
- av_log(s, AV_LOG_ERROR, "codec not compatible with flv\n");
- return -1;
- }
- avpriv_set_pts_info(s->streams[i], 32, 1, 1000); /* 32 bit pts in ms */
-
- sc = av_mallocz(sizeof(FLVStreamContext));
- if (!sc)
- return AVERROR(ENOMEM);
- s->streams[i]->priv_data = sc;
- sc->last_ts = -1;
- }
-
- flv->delay = AV_NOPTS_VALUE;
-
- avio_write(pb, "FLV", 3);
- avio_w8(pb, 1);
- avio_w8(pb, FLV_HEADER_FLAG_HASAUDIO * !!audio_enc +
- FLV_HEADER_FLAG_HASVIDEO * !!video_enc);
- avio_wb32(pb, 9);
- avio_wb32(pb, 0);
-
- for (i = 0; i < s->nb_streams; i++)
- if (s->streams[i]->codec->codec_tag == 5) {
- avio_w8(pb, 8); // message type
- avio_wb24(pb, 0); // include flags
- avio_wb24(pb, 0); // time stamp
- avio_wb32(pb, 0); // reserved
- avio_wb32(pb, 11); // size
- flv->reserved = 5;
- }
-
/* write meta_tag */
avio_w8(pb, 18); // tag type META
metadata_size_pos = avio_tell(pb);
avio_wb24(pb, 0); // size of data part (sum of all parts below)
- avio_wb24(pb, 0); // timestamp
+ avio_wb24(pb, ts); // timestamp
avio_wb32(pb, 0); // reserved
/* now data of data_size size */
/* mixed array (hash) with size and string/type/data tuples */
avio_w8(pb, AMF_DATA_TYPE_MIXEDARRAY);
metadata_count_pos = avio_tell(pb);
- metadata_count = 5 * !!video_enc +
- 5 * !!audio_enc +
- 1 * !!data_enc +
+ metadata_count = 4 * !!flv->video_enc +
+ 5 * !!flv->audio_enc +
+ 1 * !!flv->data_enc +
2; // +2 for duration and file size
avio_wb32(pb, metadata_count);
put_amf_string(pb, "duration");
- flv->duration_offset= avio_tell(pb);
+ flv->duration_offset = avio_tell(pb);
// fill in the guessed duration, it'll be corrected later if incorrect
put_amf_double(pb, s->duration / AV_TIME_BASE);
- if (video_enc) {
+ if (flv->video_enc) {
put_amf_string(pb, "width");
- put_amf_double(pb, video_enc->width);
+ put_amf_double(pb, flv->video_enc->width);
put_amf_string(pb, "height");
- put_amf_double(pb, video_enc->height);
+ put_amf_double(pb, flv->video_enc->height);
put_amf_string(pb, "videodatarate");
- put_amf_double(pb, video_enc->bit_rate / 1024.0);
+ put_amf_double(pb, flv->video_enc->bit_rate / 1024.0);
- put_amf_string(pb, "framerate");
- put_amf_double(pb, framerate);
+ if (flv->framerate != 0.0) {
+ put_amf_string(pb, "framerate");
+ put_amf_double(pb, flv->framerate);
+ metadata_count++;
+ }
put_amf_string(pb, "videocodecid");
- put_amf_double(pb, video_enc->codec_tag);
+ put_amf_double(pb, flv->video_enc->codec_tag);
}
- if (audio_enc) {
+ if (flv->audio_enc) {
put_amf_string(pb, "audiodatarate");
- put_amf_double(pb, audio_enc->bit_rate / 1024.0);
+ put_amf_double(pb, flv->audio_enc->bit_rate / 1024.0);
put_amf_string(pb, "audiosamplerate");
- put_amf_double(pb, audio_enc->sample_rate);
+ put_amf_double(pb, flv->audio_enc->sample_rate);
put_amf_string(pb, "audiosamplesize");
- put_amf_double(pb, audio_enc->codec_id == AV_CODEC_ID_PCM_U8 ? 8 : 16);
+ put_amf_double(pb, flv->audio_enc->codec_id == AV_CODEC_ID_PCM_U8 ? 8 : 16);
put_amf_string(pb, "stereo");
- put_amf_bool(pb, audio_enc->channels == 2);
+ put_amf_bool(pb, flv->audio_enc->channels == 2);
put_amf_string(pb, "audiocodecid");
- put_amf_double(pb, audio_enc->codec_tag);
+ put_amf_double(pb, flv->audio_enc->codec_tag);
}
- if (data_enc) {
+ if (flv->data_enc) {
put_amf_string(pb, "datastream");
put_amf_double(pb, 0.0);
}
avio_wb24(pb, data_size);
avio_skip(pb, data_size + 10 - 3);
avio_wb32(pb, data_size + 11);
+}
+
+static int unsupported_codec(AVFormatContext *s,
+ const char* type, int codec_id)
+{
+ const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id);
+ av_log(s, AV_LOG_ERROR,
+ "%s codec %s not compatible with flv\n",
+ type,
+ desc ? desc->name : "unknown");
+ return AVERROR(ENOSYS);
+}
+
+static int flv_write_header(AVFormatContext *s)
+{
+ int i;
+ AVIOContext *pb = s->pb;
+ FLVContext *flv = s->priv_data;
+ int64_t data_size;
+
+ for (i = 0; i < s->nb_streams; i++) {
+ AVCodecContext *enc = s->streams[i]->codec;
+ FLVStreamContext *sc;
+ switch (enc->codec_type) {
+ case AVMEDIA_TYPE_VIDEO:
+ if (s->streams[i]->avg_frame_rate.den &&
+ s->streams[i]->avg_frame_rate.num) {
+ flv->framerate = av_q2d(s->streams[i]->avg_frame_rate);
+ }
+ if (flv->video_enc) {
+ av_log(s, AV_LOG_ERROR,
+ "at most one video stream is supported in flv\n");
+ return AVERROR(EINVAL);
+ }
+ flv->video_enc = enc;
+ if (!ff_codec_get_tag(flv_video_codec_ids, enc->codec_id))
+ return unsupported_codec(s, "Video", enc->codec_id);
+ break;
+ case AVMEDIA_TYPE_AUDIO:
+ if (flv->audio_enc) {
+ av_log(s, AV_LOG_ERROR,
+ "at most one audio stream is supported in flv\n");
+ return AVERROR(EINVAL);
+ }
+ flv->audio_enc = enc;
+ if (get_audio_flags(s, enc) < 0)
+ return unsupported_codec(s, "Audio", enc->codec_id);
+ break;
+ case AVMEDIA_TYPE_DATA:
+ if (enc->codec_id != AV_CODEC_ID_TEXT)
+ return unsupported_codec(s, "Data", enc->codec_id);
+ flv->data_enc = enc;
+ break;
+ default:
+ av_log(s, AV_LOG_ERROR, "codec not compatible with flv\n");
+ return -1;
+ }
+ avpriv_set_pts_info(s->streams[i], 32, 1, 1000); /* 32 bit pts in ms */
+
+ sc = av_mallocz(sizeof(FLVStreamContext));
+ if (!sc)
+ return AVERROR(ENOMEM);
+ s->streams[i]->priv_data = sc;
+ sc->last_ts = -1;
+ }
+
+ flv->delay = AV_NOPTS_VALUE;
+
+ avio_write(pb, "FLV", 3);
+ avio_w8(pb, 1);
+ avio_w8(pb, FLV_HEADER_FLAG_HASAUDIO * !!flv->audio_enc +
+ FLV_HEADER_FLAG_HASVIDEO * !!flv->video_enc);
+ avio_wb32(pb, 9);
+ avio_wb32(pb, 0);
+
+ for (i = 0; i < s->nb_streams; i++)
+ if (s->streams[i]->codec->codec_tag == 5) {
+ avio_w8(pb, 8); // message type
+ avio_wb24(pb, 0); // include flags
+ avio_wb24(pb, 0); // time stamp
+ avio_wb32(pb, 0); // reserved
+ avio_wb32(pb, 11); // size
+ flv->reserved = 5;
+ }
+
+ write_metadata(s, 0);
for (i = 0; i < s->nb_streams; i++) {
AVCodecContext *enc = s->streams[i]->codec;
uint8_t *data = NULL;
int flags = 0, flags_size;
- if (enc->codec_id == AV_CODEC_ID_VP6F ||
+ if (enc->codec_id == AV_CODEC_ID_VP6F || enc->codec_id == AV_CODEC_ID_VP6A ||
enc->codec_id == AV_CODEC_ID_AAC)
flags_size = 2;
else if (enc->codec_id == AV_CODEC_ID_H264)
else
flags_size = 1;
+ if (flv->delay == AV_NOPTS_VALUE)
+ flv->delay = -pkt->dts;
+
+ if (pkt->dts < -flv->delay) {
+ av_log(s, AV_LOG_WARNING,
+ "Packets are not in the proper order with respect to DTS\n");
+ return AVERROR(EINVAL);
+ }
+
+ ts = pkt->dts + flv->delay; // add delay to force positive dts
+
+ if (s->event_flags & AVSTREAM_EVENT_FLAG_METADATA_UPDATED) {
+ write_metadata(s, ts);
+ s->event_flags &= ~AVSTREAM_EVENT_FLAG_METADATA_UPDATED;
+ }
+
switch (enc->codec_type) {
case AVMEDIA_TYPE_VIDEO:
avio_w8(pb, FLV_TAG_TYPE_VIDEO);
- flags = enc->codec_tag;
- if (flags == 0) {
- av_log(s, AV_LOG_ERROR,
- "video codec %X not compatible with flv\n",
- enc->codec_id);
- return -1;
- }
+ flags = ff_codec_get_tag(flv_video_codec_ids, enc->codec_id);
flags |= pkt->flags & AV_PKT_FLAG_KEY ? FLV_FRAME_KEY : FLV_FRAME_INTER;
break;
if (ff_avc_parse_nal_units_buf(pkt->data, &data, &size) < 0)
return -1;
- if (flv->delay == AV_NOPTS_VALUE)
- flv->delay = -pkt->dts;
-
- if (pkt->dts < -flv->delay) {
- av_log(s, AV_LOG_WARNING,
- "Packets are not in the proper order with respect to DTS\n");
- return AVERROR(EINVAL);
- }
-
- ts = pkt->dts + flv->delay; // add delay to force positive dts
-
/* check Speex packet duration */
if (enc->codec_id == AV_CODEC_ID_SPEEX && ts - sc->last_ts > 160)
av_log(s, AV_LOG_WARNING, "Warning: Speex stream has more than "
if (enc->codec_type == AVMEDIA_TYPE_DATA) {
int data_size;
- int metadata_size_pos = avio_tell(pb);
+ int64_t metadata_size_pos = avio_tell(pb);
avio_w8(pb, AMF_DATA_TYPE_STRING);
put_amf_string(pb, "onTextData");
avio_w8(pb, AMF_DATA_TYPE_MIXEDARRAY);
avio_wb32(pb, data_size + 11);
} else {
avio_w8(pb,flags);
- if (enc->codec_id == AV_CODEC_ID_VP6F)
- avio_w8(pb, enc->extradata_size ? enc->extradata[0] : 0);
- else if (enc->codec_id == AV_CODEC_ID_AAC)
+ if (enc->codec_id == AV_CODEC_ID_VP6F || enc->codec_id == AV_CODEC_ID_VP6A) {
+ if (enc->extradata_size)
+ avio_w8(pb, enc->extradata[0]);
+ else
+ avio_w8(pb, ((FFALIGN(enc->width, 16) - enc->width) << 4) |
+ (FFALIGN(enc->height, 16) - enc->height));
+ } else if (enc->codec_id == AV_CODEC_ID_AAC)
avio_w8(pb, 1); // AAC raw
else if (enc->codec_id == AV_CODEC_ID_H264) {
avio_w8(pb, 1); // AVC NALU
projects / ffmpeg / blobdiff