#include "libavutil/avstring.h"
#include "libavutil/dict.h"
+#include "libavutil/opt.h"
#include "libavutil/intfloat.h"
#include "libavutil/mathematics.h"
#include "libavcodec/bytestream.h"
#define VALIDATE_INDEX_TS_THRESH 2500
typedef struct {
+ const AVClass *class; ///< Class for private options.
+ int trust_metadata; ///< configure streams according onMetaData
int wrong_dts; ///< wrong dts due to negative cts
uint8_t *new_extradata[FLV_STREAM_TYPE_NB];
int new_extradata_size[FLV_STREAM_TYPE_NB];
return 0;
}
+static AVStream *create_stream(AVFormatContext *s, int tag, int codec_type){
+ AVStream *st = avformat_new_stream(s, NULL);
+ if (!st)
+ return NULL;
+ st->id = tag;
+ st->codec->codec_type = codec_type;
+ if(s->nb_streams>=3 ||( s->nb_streams==2
+ && s->streams[0]->codec->codec_type != AVMEDIA_TYPE_DATA
+ && s->streams[1]->codec->codec_type != AVMEDIA_TYPE_DATA))
+ s->ctx_flags &= ~AVFMTCTX_NOHEADER;
+
+ avpriv_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */
+ return st;
+}
+static int flv_same_audio_codec(AVCodecContext *acodec, int flags)
+{
+ int bits_per_coded_sample = (flags & FLV_AUDIO_SAMPLESIZE_MASK) ? 16 : 8;
+ int flv_codecid = flags & FLV_AUDIO_CODECID_MASK;
+ int codec_id;
+
+ if (!acodec->codec_id && !acodec->codec_tag)
+ return 1;
+
+ if (acodec->bits_per_coded_sample != bits_per_coded_sample)
+ return 0;
+
+ switch(flv_codecid) {
+ //no distinction between S16 and S8 PCM codec flags
+ case FLV_CODECID_PCM:
+ codec_id = bits_per_coded_sample == 8 ? CODEC_ID_PCM_U8 :
+#if HAVE_BIGENDIAN
+ CODEC_ID_PCM_S16BE;
+#else
+ CODEC_ID_PCM_S16LE;
+#endif
+ return codec_id == acodec->codec_id;
+ case FLV_CODECID_PCM_LE:
+ codec_id = bits_per_coded_sample == 8 ? CODEC_ID_PCM_U8 : CODEC_ID_PCM_S16LE;
+ return codec_id == acodec->codec_id;
+ case FLV_CODECID_AAC:
+ return acodec->codec_id == CODEC_ID_AAC;
+ case FLV_CODECID_ADPCM:
+ return acodec->codec_id == CODEC_ID_ADPCM_SWF;
+ case FLV_CODECID_SPEEX:
+ return acodec->codec_id == CODEC_ID_SPEEX;
+ case FLV_CODECID_MP3:
+ return acodec->codec_id == CODEC_ID_MP3;
+ case FLV_CODECID_NELLYMOSER_8KHZ_MONO:
+ case FLV_CODECID_NELLYMOSER_16KHZ_MONO:
+ case FLV_CODECID_NELLYMOSER:
+ return acodec->codec_id == CODEC_ID_NELLYMOSER;
+ case FLV_CODECID_PCM_MULAW:
+ return acodec->sample_rate == 8000 &&
+ acodec->codec_id == CODEC_ID_PCM_MULAW;
+ case FLV_CODECID_PCM_ALAW:
+ return acodec->sample_rate = 8000 &&
+ acodec->codec_id == CODEC_ID_PCM_ALAW;
+ default:
+ return acodec->codec_tag == (flv_codecid >> FLV_AUDIO_CODECID_OFFSET);
+ }
+
+ return 0;
+}
+
static void flv_set_audio_codec(AVFormatContext *s, AVStream *astream, AVCodecContext *acodec, int flv_codecid) {
switch(flv_codecid) {
//no distinction between S16 and S8 PCM codec flags
case FLV_CODECID_NELLYMOSER:
acodec->codec_id = CODEC_ID_NELLYMOSER;
break;
+ case FLV_CODECID_PCM_MULAW:
+ acodec->sample_rate = 8000;
+ acodec->codec_id = CODEC_ID_PCM_MULAW;
+ break;
+ case FLV_CODECID_PCM_ALAW:
+ acodec->sample_rate = 8000;
+ acodec->codec_id = CODEC_ID_PCM_ALAW;
+ break;
default:
av_log(s, AV_LOG_INFO, "Unsupported audio codec (%x)\n", flv_codecid >> FLV_AUDIO_CODECID_OFFSET);
acodec->codec_tag = flv_codecid >> FLV_AUDIO_CODECID_OFFSET;
}
}
+static int flv_same_video_codec(AVCodecContext *vcodec, int flags)
+{
+ int flv_codecid = flags & FLV_VIDEO_CODECID_MASK;
+
+ if (!vcodec->codec_id && !vcodec->codec_tag)
+ return 1;
+
+ switch (flv_codecid) {
+ case FLV_CODECID_H263:
+ return vcodec->codec_id == CODEC_ID_FLV1;
+ case FLV_CODECID_SCREEN:
+ return vcodec->codec_id == CODEC_ID_FLASHSV;
+ case FLV_CODECID_SCREEN2:
+ return vcodec->codec_id == CODEC_ID_FLASHSV2;
+ case FLV_CODECID_VP6:
+ return vcodec->codec_id == CODEC_ID_VP6F;
+ case FLV_CODECID_VP6A:
+ return vcodec->codec_id == CODEC_ID_VP6A;
+ case FLV_CODECID_H264:
+ return vcodec->codec_id == CODEC_ID_H264;
+ default:
+ return vcodec->codec_tag == flv_codecid;
+ }
+
+ return 0;
+}
+
static int flv_set_video_codec(AVFormatContext *s, AVStream *vstream, int flv_codecid) {
AVCodecContext *vcodec = vstream->codec;
switch(flv_codecid) {
static int amf_parse_object(AVFormatContext *s, AVStream *astream, AVStream *vstream, const char *key, int64_t max_pos, int depth) {
AVCodecContext *acodec, *vcodec;
+ FLVContext *flv = s->priv_data;
AVIOContext *ioc;
AMFDataType amf_type;
char str_val[256];
vcodec->bit_rate = num_val * 1024.0;
else if (!strcmp(key, "audiodatarate") && acodec && 0 <= (int)(num_val * 1024.0))
acodec->bit_rate = num_val * 1024.0;
+ else if (!strcmp(key, "datastream")) {
+ AVStream *st = create_stream(s, 2, AVMEDIA_TYPE_DATA);
+ if (!st)
+ return AVERROR(ENOMEM);
+ st->codec->codec_id = CODEC_ID_TEXT;
+ } else if (flv->trust_metadata) {
+ if (!strcmp(key, "videocodecid") && vcodec) {
+ flv_set_video_codec(s, vstream, num_val);
+ } else
+ if (!strcmp(key, "audiocodecid") && acodec) {
+ flv_set_audio_codec(s, astream, acodec, num_val);
+ } else
+ if (!strcmp(key, "audiosamplerate") && acodec) {
+ acodec->sample_rate = num_val;
+ } else
+ if (!strcmp(key, "width") && vcodec) {
+ vcodec->width = num_val;
+ } else
+ if (!strcmp(key, "height") && vcodec) {
+ vcodec->height = num_val;
+ }
+ }
}
if (amf_type == AMF_DATA_TYPE_OBJECT && s->nb_streams == 1 &&
//first object needs to be "onMetaData" string
type = avio_r8(ioc);
- if(type != AMF_DATA_TYPE_STRING || amf_get_string(ioc, buffer, sizeof(buffer)) < 0 || strcmp(buffer, "onMetaData"))
+ if (type != AMF_DATA_TYPE_STRING ||
+ amf_get_string(ioc, buffer, sizeof(buffer)) < 0)
+ return -1;
+
+ if (!strcmp(buffer, "onTextData"))
+ return 1;
+
+ if (strcmp(buffer, "onMetaData"))
return -1;
//find the streams now so that amf_parse_object doesn't need to do the lookup every time it is called.
return 0;
}
-static AVStream *create_stream(AVFormatContext *s, int stream_type){
- AVStream *st = avformat_new_stream(s, NULL);
- if (!st)
- return NULL;
- st->id = stream_type;
- switch(stream_type) {
- case FLV_STREAM_TYPE_VIDEO: st->codec->codec_type = AVMEDIA_TYPE_VIDEO; break;
- case FLV_STREAM_TYPE_AUDIO: st->codec->codec_type = AVMEDIA_TYPE_AUDIO; break;
- case FLV_STREAM_TYPE_DATA:
- st->codec->codec_type = AVMEDIA_TYPE_DATA;
- st->codec->codec_id = CODEC_ID_NONE; // Going to rely on copy for now
- av_log(s, AV_LOG_DEBUG, "Data stream created\n");
- }
- if(s->nb_streams>=3 ||( s->nb_streams==2
- && s->streams[0]->codec->codec_type != AVMEDIA_TYPE_DATA
- && s->streams[1]->codec->codec_type != AVMEDIA_TYPE_DATA))
- s->ctx_flags &= ~AVFMTCTX_NOHEADER;
-
- avpriv_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */
- return st;
-}
-
static int flv_read_header(AVFormatContext *s)
{
int offset, flags;
s->ctx_flags |= AVFMTCTX_NOHEADER;
if(flags & FLV_HEADER_FLAG_HASVIDEO){
- if(!create_stream(s, FLV_STREAM_TYPE_VIDEO))
+ if(!create_stream(s, 0, AVMEDIA_TYPE_VIDEO))
return AVERROR(ENOMEM);
}
if(flags & FLV_HEADER_FLAG_HASAUDIO){
- if(!create_stream(s, FLV_STREAM_TYPE_AUDIO))
+ if(!create_stream(s, 1, AVMEDIA_TYPE_AUDIO))
return AVERROR(ENOMEM);
}
// Flag doesn't indicate whether or not there is script-data present. Must
}
}
+
+static int flv_data_packet(AVFormatContext *s, AVPacket *pkt,
+ int64_t dts, int64_t next)
+{
+ int ret = AVERROR_INVALIDDATA, i;
+ AVIOContext *pb = s->pb;
+ AVStream *st = NULL;
+ AMFDataType type;
+ char buf[20];
+ int length;
+
+ type = avio_r8(pb);
+ if (type == AMF_DATA_TYPE_MIXEDARRAY)
+ avio_seek(pb, 4, SEEK_CUR);
+ else if (type != AMF_DATA_TYPE_OBJECT)
+ goto out;
+
+ amf_get_string(pb, buf, sizeof(buf));
+ if (strcmp(buf, "type") || avio_r8(pb) != AMF_DATA_TYPE_STRING)
+ goto out;
+
+ amf_get_string(pb, buf, sizeof(buf));
+ //FIXME parse it as codec_id
+ amf_get_string(pb, buf, sizeof(buf));
+ if (strcmp(buf, "text") || avio_r8(pb) != AMF_DATA_TYPE_STRING)
+ goto out;
+
+ length = avio_rb16(pb);
+ ret = av_get_packet(s->pb, pkt, length);
+ if (ret < 0) {
+ ret = AVERROR(EIO);
+ goto out;
+ }
+
+ for (i = 0; i < s->nb_streams; i++) {
+ st = s->streams[i];
+ if (st->codec->codec_type == AVMEDIA_TYPE_DATA)
+ break;
+ }
+
+ if (i == s->nb_streams) {
+ st = create_stream(s, 2, AVMEDIA_TYPE_DATA);
+ if (!st)
+ goto out;
+ st->codec->codec_id = CODEC_ID_TEXT;
+ }
+
+ pkt->dts = dts;
+ pkt->pts = dts;
+ pkt->size = ret;
+
+ pkt->stream_index = st->index;
+ pkt->flags |= AV_PKT_FLAG_KEY;
+
+ avio_seek(s->pb, next + 4, SEEK_SET);
+out:
+ return ret;
+}
+
static int flv_read_packet(AVFormatContext *s, AVPacket *pkt)
{
FLVContext *flv = s->priv_data;
/* now find stream */
for(i=0;i<s->nb_streams;i++) {
st = s->streams[i];
- if (st->id == stream_type)
+ if (stream_type == FLV_STREAM_TYPE_AUDIO && st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
+ if (flv_same_audio_codec(st->codec, flags)) {
+ break;
+ }
+ } else
+ if (stream_type == FLV_STREAM_TYPE_VIDEO && st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
+ if (flv_same_video_codec(st->codec, flags)) {
+ break;
+ }
+ } else if (st->id == stream_type) {
break;
+ }
}
if(i == s->nb_streams){
av_log(s, AV_LOG_WARNING, "Stream discovered after head already parsed\n");
- st= create_stream(s, stream_type);
+ st = create_stream(s, stream_type,
+ (int[]){AVMEDIA_TYPE_VIDEO, AVMEDIA_TYPE_AUDIO, AVMEDIA_TYPE_DATA}[stream_type]);
}
av_dlog(s, "%d %X %d \n", stream_type, flags, st->discard);
if( (st->discard >= AVDISCARD_NONKEY && !((flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_KEY || (stream_type == FLV_STREAM_TYPE_AUDIO)))
return avio_seek_time(s->pb, stream_index, ts, flags);
}
-#if 0 /* don't know enough to implement this */
-static int flv_read_seek2(AVFormatContext *s, int stream_index,
- int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
-{
- int ret = AVERROR(ENOSYS);
-
- if (ts - min_ts > (uint64_t)(max_ts - ts)) flags |= AVSEEK_FLAG_BACKWARD;
-
- if (!s->pb->seekable) {
- if (stream_index < 0) {
- stream_index = av_find_default_stream_index(s);
- if (stream_index < 0)
- return -1;
-
- /* timestamp for default must be expressed in AV_TIME_BASE units */
- ts = av_rescale_rnd(ts, 1000, AV_TIME_BASE,
- flags & AVSEEK_FLAG_BACKWARD ? AV_ROUND_DOWN : AV_ROUND_UP);
- }
- ret = avio_seek_time(s->pb, stream_index, ts, flags);
- }
+#define OFFSET(x) offsetof(FLVContext, x)
+#define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
+static const AVOption options[] = {
+ { "flv_metadata", "Allocate streams according the onMetaData array", OFFSET(trust_metadata), AV_OPT_TYPE_INT, { 0 }, 0, 1, VD},
+ { NULL }
+};
- if (ret == AVERROR(ENOSYS))
- ret = av_seek_frame(s, stream_index, ts, flags);
- return ret;
-}
-#endif
+static const AVClass class = {
+ .class_name = "flvdec",
+ .item_name = av_default_item_name,
+ .option = options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
AVInputFormat ff_flv_demuxer = {
.name = "flv",
.read_header = flv_read_header,
.read_packet = flv_read_packet,
.read_seek = flv_read_seek,
-#if 0
- .read_seek2 = flv_read_seek2,
-#endif
.read_close = flv_read_close,
.extensions = "flv",
+ .priv_class = &class,
};
projects / ffmpeg / blobdiff