/*
* FLV demuxer
- * Copyright (c) 2003 The FFmpeg Project.
+ * Copyright (c) 2003 The Libav Project
*
* This demuxer will generate a 1 byte extradata for VP6F content.
* It is composed of:
* - upper 4bits: difference between encoded width and visible width
* - lower 4bits: difference between encoded height and visible height
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+
+#include "libavutil/avstring.h"
+#include "libavutil/dict.h"
+#include "libavutil/intfloat_readwrite.h"
+#include "libavutil/mathematics.h"
+#include "libavcodec/bytestream.h"
+#include "libavcodec/mpeg4audio.h"
#include "avformat.h"
+#include "internal.h"
+#include "avio_internal.h"
#include "flv.h"
+#define KEYFRAMES_TAG "keyframes"
+#define KEYFRAMES_TIMESTAMP_TAG "times"
+#define KEYFRAMES_BYTEOFFSET_TAG "filepositions"
+
typedef struct {
int wrong_dts; ///< wrong dts due to negative cts
} FLVContext;
const uint8_t *d;
d = p->buf;
- if (d[0] == 'F' && d[1] == 'L' && d[2] == 'V' && d[3] < 5 && d[5]==0) {
+ if (d[0] == 'F' && d[1] == 'L' && d[2] == 'V' && d[3] < 5 && d[5]==0 && AV_RB32(d+5)>8) {
return AVPROBE_SCORE_MAX;
}
return 0;
switch(flv_codecid) {
//no distinction between S16 and S8 PCM codec flags
case FLV_CODECID_PCM:
- acodec->codec_id = acodec->bits_per_coded_sample == 8 ? CODEC_ID_PCM_S8 :
-#ifdef WORDS_BIGENDIAN
+ acodec->codec_id = acodec->bits_per_coded_sample == 8 ? CODEC_ID_PCM_U8 :
+#if HAVE_BIGENDIAN
CODEC_ID_PCM_S16BE;
#else
CODEC_ID_PCM_S16LE;
#endif
break;
case FLV_CODECID_PCM_LE:
- acodec->codec_id = acodec->bits_per_coded_sample == 8 ? CODEC_ID_PCM_S8 : CODEC_ID_PCM_S16LE; break;
+ acodec->codec_id = acodec->bits_per_coded_sample == 8 ? CODEC_ID_PCM_U8 : CODEC_ID_PCM_S16LE; break;
case FLV_CODECID_AAC : acodec->codec_id = CODEC_ID_AAC; break;
case FLV_CODECID_ADPCM: acodec->codec_id = CODEC_ID_ADPCM_SWF; break;
case FLV_CODECID_SPEEX:
case FLV_CODECID_MP3 : acodec->codec_id = CODEC_ID_MP3 ; astream->need_parsing = AVSTREAM_PARSE_FULL; break;
case FLV_CODECID_NELLYMOSER_8KHZ_MONO:
acodec->sample_rate = 8000; //in case metadata does not otherwise declare samplerate
+ acodec->codec_id = CODEC_ID_NELLYMOSER;
+ break;
+ case FLV_CODECID_NELLYMOSER_16KHZ_MONO:
+ acodec->sample_rate = 16000;
+ acodec->codec_id = CODEC_ID_NELLYMOSER;
+ break;
case FLV_CODECID_NELLYMOSER:
acodec->codec_id = CODEC_ID_NELLYMOSER;
break;
switch(flv_codecid) {
case FLV_CODECID_H263 : vcodec->codec_id = CODEC_ID_FLV1 ; break;
case FLV_CODECID_SCREEN: vcodec->codec_id = CODEC_ID_FLASHSV; break;
+ case FLV_CODECID_SCREEN2: vcodec->codec_id = CODEC_ID_FLASHSV2; break;
case FLV_CODECID_VP6 : vcodec->codec_id = CODEC_ID_VP6F ;
case FLV_CODECID_VP6A :
if(flv_codecid == FLV_CODECID_VP6A)
vcodec->extradata_size = 1;
vcodec->extradata = av_malloc(1);
}
- vcodec->extradata[0] = get_byte(s->pb);
+ vcodec->extradata[0] = avio_r8(s->pb);
return 1; // 1 byte body size adjustment for flv_read_packet()
case FLV_CODECID_H264:
vcodec->codec_id = CODEC_ID_H264;
return 0;
}
-static int amf_get_string(ByteIOContext *ioc, char *buffer, int buffsize) {
- int length = get_be16(ioc);
+static int amf_get_string(AVIOContext *ioc, char *buffer, int buffsize) {
+ int length = avio_rb16(ioc);
if(length >= buffsize) {
- url_fskip(ioc, length);
+ avio_skip(ioc, length);
return -1;
}
- get_buffer(ioc, buffer, length);
+ avio_read(ioc, buffer, length);
buffer[length] = '\0';
return length;
}
+static int parse_keyframes_index(AVFormatContext *s, AVIOContext *ioc, AVStream *vstream, int64_t max_pos) {
+ unsigned int arraylen = 0, timeslen = 0, fileposlen = 0, i;
+ double num_val;
+ char str_val[256];
+ int64_t *times = NULL;
+ int64_t *filepositions = NULL;
+ int ret = AVERROR(ENOSYS);
+ int64_t initial_pos = avio_tell(ioc);
+ AVDictionaryEntry *creator = av_dict_get(s->metadata, "metadatacreator",
+ NULL, 0);
+
+ if (creator && !strcmp(creator->value, "MEGA")) {
+ /* Files with this metadatacreator tag seem to have filepositions
+ * pointing at the 4 trailer bytes of the previous packet,
+ * which isn't the norm (nor what we expect here, nor what
+ * jwplayer + lighttpd expect, nor what flvtool2 produces).
+ * Just ignore the index in this case, instead of risking trying
+ * to adjust it to something that might or might not work. */
+ return 0;
+ }
+
+ while (avio_tell(ioc) < max_pos - 2 && amf_get_string(ioc, str_val, sizeof(str_val)) > 0) {
+ int64_t* current_array;
+
+ // Expect array object in context
+ if (avio_r8(ioc) != AMF_DATA_TYPE_ARRAY)
+ break;
+
+ arraylen = avio_rb32(ioc);
+ if (arraylen >> 28)
+ break;
+
+ /*
+ * Expect only 'times' or 'filepositions' sub-arrays in other case refuse to use such metadata
+ * for indexing
+ */
+ if (!strcmp(KEYFRAMES_TIMESTAMP_TAG, str_val) && !times) {
+ if (!(times = av_mallocz(sizeof(*times) * arraylen))) {
+ ret = AVERROR(ENOMEM);
+ goto finish;
+ }
+ timeslen = arraylen;
+ current_array = times;
+ } else if (!strcmp(KEYFRAMES_BYTEOFFSET_TAG, str_val) && !filepositions) {
+ if (!(filepositions = av_mallocz(sizeof(*filepositions) * arraylen))) {
+ ret = AVERROR(ENOMEM);
+ goto finish;
+ }
+ fileposlen = arraylen;
+ current_array = filepositions;
+ } else // unexpected metatag inside keyframes, will not use such metadata for indexing
+ break;
+
+ for (i = 0; i < arraylen && avio_tell(ioc) < max_pos - 1; i++) {
+ if (avio_r8(ioc) != AMF_DATA_TYPE_NUMBER)
+ goto finish;
+ num_val = av_int2dbl(avio_rb64(ioc));
+ current_array[i] = num_val;
+ }
+ if (times && filepositions) {
+ // All done, exiting at a position allowing amf_parse_object
+ // to finish parsing the object
+ ret = 0;
+ break;
+ }
+ }
+
+ if (!ret && timeslen == fileposlen)
+ for (i = 0; i < fileposlen; i++)
+ av_add_index_entry(vstream, filepositions[i], times[i]*1000, 0, 0, AVINDEX_KEYFRAME);
+ else
+ av_log(s, AV_LOG_WARNING, "Invalid keyframes object, skipping.\n");
+
+finish:
+ av_freep(×);
+ av_freep(&filepositions);
+ // If we got unexpected data, but successfully reset back to
+ // the start pos, the caller can continue parsing
+ if (ret < 0 && avio_seek(ioc, initial_pos, SEEK_SET) > 0)
+ return 0;
+ return ret;
+}
+
static int amf_parse_object(AVFormatContext *s, AVStream *astream, AVStream *vstream, const char *key, int64_t max_pos, int depth) {
AVCodecContext *acodec, *vcodec;
- ByteIOContext *ioc;
+ AVIOContext *ioc;
AMFDataType amf_type;
char str_val[256];
double num_val;
num_val = 0;
ioc = s->pb;
- amf_type = get_byte(ioc);
+ amf_type = avio_r8(ioc);
switch(amf_type) {
case AMF_DATA_TYPE_NUMBER:
- num_val = av_int2dbl(get_be64(ioc)); break;
+ num_val = av_int2dbl(avio_rb64(ioc)); break;
case AMF_DATA_TYPE_BOOL:
- num_val = get_byte(ioc); break;
+ num_val = avio_r8(ioc); break;
case AMF_DATA_TYPE_STRING:
if(amf_get_string(ioc, str_val, sizeof(str_val)) < 0)
return -1;
case AMF_DATA_TYPE_OBJECT: {
unsigned int keylen;
- while(url_ftell(ioc) < max_pos - 2 && (keylen = get_be16(ioc))) {
- url_fskip(ioc, keylen); //skip key string
+ if ((vstream || astream) && key && !strcmp(KEYFRAMES_TAG, key) && depth == 1)
+ if (parse_keyframes_index(s, ioc, vstream ? vstream : astream,
+ max_pos) < 0)
+ return -1;
+
+ while(avio_tell(ioc) < max_pos - 2 && (keylen = avio_rb16(ioc))) {
+ avio_skip(ioc, keylen); //skip key string
if(amf_parse_object(s, NULL, NULL, NULL, max_pos, depth + 1) < 0)
return -1; //if we couldn't skip, bomb out.
}
- if(get_byte(ioc) != AMF_END_OF_OBJECT)
+ if(avio_r8(ioc) != AMF_END_OF_OBJECT)
return -1;
}
break;
case AMF_DATA_TYPE_UNSUPPORTED:
break; //these take up no additional space
case AMF_DATA_TYPE_MIXEDARRAY:
- url_fskip(ioc, 4); //skip 32-bit max array index
- while(url_ftell(ioc) < max_pos - 2 && amf_get_string(ioc, str_val, sizeof(str_val)) > 0) {
+ avio_skip(ioc, 4); //skip 32-bit max array index
+ while(avio_tell(ioc) < max_pos - 2 && amf_get_string(ioc, str_val, sizeof(str_val)) > 0) {
//this is the only case in which we would want a nested parse to not skip over the object
if(amf_parse_object(s, astream, vstream, str_val, max_pos, depth + 1) < 0)
return -1;
}
- if(get_byte(ioc) != AMF_END_OF_OBJECT)
+ if(avio_r8(ioc) != AMF_END_OF_OBJECT)
return -1;
break;
case AMF_DATA_TYPE_ARRAY: {
unsigned int arraylen, i;
- arraylen = get_be32(ioc);
- for(i = 0; i < arraylen && url_ftell(ioc) < max_pos - 1; i++) {
+ arraylen = avio_rb32(ioc);
+ for(i = 0; i < arraylen && avio_tell(ioc) < max_pos - 1; i++) {
if(amf_parse_object(s, NULL, NULL, NULL, max_pos, depth + 1) < 0)
return -1; //if we couldn't skip, bomb out.
}
}
break;
case AMF_DATA_TYPE_DATE:
- url_fskip(ioc, 8 + 2); //timestamp (double) and UTC offset (int16)
+ avio_skip(ioc, 8 + 2); //timestamp (double) and UTC offset (int16)
break;
default: //unsupported type, we couldn't skip
return -1;
acodec = astream ? astream->codec : NULL;
vcodec = vstream ? vstream->codec : NULL;
+ if (amf_type == AMF_DATA_TYPE_NUMBER) {
+ if (!strcmp(key, "duration"))
+ s->duration = num_val * AV_TIME_BASE;
+ else if (!strcmp(key, "videodatarate") && vcodec && 0 <= (int)(num_val * 1024.0))
+ 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;
+ }
+
+ if (!strcmp(key, "duration") ||
+ !strcmp(key, "filesize") ||
+ !strcmp(key, "width") ||
+ !strcmp(key, "height") ||
+ !strcmp(key, "videodatarate") ||
+ !strcmp(key, "framerate") ||
+ !strcmp(key, "videocodecid") ||
+ !strcmp(key, "audiodatarate") ||
+ !strcmp(key, "audiosamplerate") ||
+ !strcmp(key, "audiosamplesize") ||
+ !strcmp(key, "stereo") ||
+ !strcmp(key, "audiocodecid"))
+ return 0;
+
if(amf_type == AMF_DATA_TYPE_BOOL) {
- if(!strcmp(key, "stereo") && acodec) acodec->channels = num_val > 0 ? 2 : 1;
+ av_strlcpy(str_val, num_val > 0 ? "true" : "false", sizeof(str_val));
+ av_dict_set(&s->metadata, key, str_val, 0);
} else if(amf_type == AMF_DATA_TYPE_NUMBER) {
- if(!strcmp(key, "duration")) s->duration = num_val * AV_TIME_BASE;
-// else if(!strcmp(key, "width") && vcodec && num_val > 0) vcodec->width = num_val;
-// else if(!strcmp(key, "height") && vcodec && num_val > 0) vcodec->height = num_val;
- else if(!strcmp(key, "audiocodecid") && acodec && 0 <= (int)num_val)
- flv_set_audio_codec(s, astream, (int)num_val << FLV_AUDIO_CODECID_OFFSET);
- else if(!strcmp(key, "videocodecid") && vcodec && 0 <= (int)num_val)
- flv_set_video_codec(s, vstream, (int)num_val);
- else if(!strcmp(key, "audiosamplesize") && acodec && 0 < (int)num_val) {
- acodec->bits_per_coded_sample = num_val;
- //we may have to rewrite a previously read codecid because FLV only marks PCM endianness.
- if(num_val == 8 && (acodec->codec_id == CODEC_ID_PCM_S16BE || acodec->codec_id == CODEC_ID_PCM_S16LE))
- acodec->codec_id = CODEC_ID_PCM_S8;
- }
- else if(!strcmp(key, "audiosamplerate") && acodec && num_val >= 0) {
- //some tools, like FLVTool2, write consistently approximate metadata sample rates
- if (!acodec->sample_rate) {
- switch((int)num_val) {
- case 44000: acodec->sample_rate = 44100 ; break;
- case 22000: acodec->sample_rate = 22050 ; break;
- case 11000: acodec->sample_rate = 11025 ; break;
- case 5000 : acodec->sample_rate = 5512 ; break;
- default : acodec->sample_rate = num_val;
- }
- }
- }
- }
+ snprintf(str_val, sizeof(str_val), "%.f", num_val);
+ av_dict_set(&s->metadata, key, str_val, 0);
+ } else if (amf_type == AMF_DATA_TYPE_STRING)
+ av_dict_set(&s->metadata, key, str_val, 0);
}
return 0;
static int flv_read_metabody(AVFormatContext *s, int64_t next_pos) {
AMFDataType type;
AVStream *stream, *astream, *vstream;
- ByteIOContext *ioc;
- int i, keylen;
+ AVIOContext *ioc;
+ int i;
char buffer[11]; //only needs to hold the string "onMetaData". Anything longer is something we don't want.
astream = NULL;
vstream = NULL;
- keylen = 0;
ioc = s->pb;
//first object needs to be "onMetaData" string
- type = get_byte(ioc);
+ type = avio_r8(ioc);
if(type != AMF_DATA_TYPE_STRING || amf_get_string(ioc, buffer, sizeof(buffer)) < 0 || 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.
for(i = 0; i < s->nb_streams; i++) {
stream = s->streams[i];
- if (stream->codec->codec_type == CODEC_TYPE_AUDIO) astream = stream;
- else if(stream->codec->codec_type == CODEC_TYPE_VIDEO) vstream = stream;
+ if (stream->codec->codec_type == AVMEDIA_TYPE_AUDIO) astream = stream;
+ else if(stream->codec->codec_type == AVMEDIA_TYPE_VIDEO) vstream = stream;
}
//parse the second object (we want a mixed array)
}
static AVStream *create_stream(AVFormatContext *s, int is_audio){
- AVStream *st = av_new_stream(s, is_audio);
+ AVStream *st = avformat_new_stream(s, NULL);
if (!st)
return NULL;
- st->codec->codec_type = is_audio ? CODEC_TYPE_AUDIO : CODEC_TYPE_VIDEO;
- av_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */
+ st->id = is_audio;
+ st->codec->codec_type = is_audio ? AVMEDIA_TYPE_AUDIO : AVMEDIA_TYPE_VIDEO;
+ avpriv_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */
return st;
}
{
int offset, flags;
- url_fskip(s->pb, 4);
- flags = get_byte(s->pb);
+ avio_skip(s->pb, 4);
+ flags = avio_r8(s->pb);
/* old flvtool cleared this field */
/* FIXME: better fix needed */
if (!flags) {
return AVERROR(ENOMEM);
}
- offset = get_be32(s->pb);
- url_fseek(s->pb, offset, SEEK_SET);
+ offset = avio_rb32(s->pb);
+ avio_seek(s->pb, offset, SEEK_SET);
+ avio_skip(s->pb, 4);
s->start_time = 0;
if (!st->codec->extradata)
return AVERROR(ENOMEM);
st->codec->extradata_size = size;
- get_buffer(s->pb, st->codec->extradata, st->codec->extradata_size);
+ avio_read(s->pb, st->codec->extradata, st->codec->extradata_size);
return 0;
}
int64_t dts, pts = AV_NOPTS_VALUE;
AVStream *st = NULL;
- retry:
- for(;;){
- pos = url_ftell(s->pb);
- url_fskip(s->pb, 4); /* size of previous packet */
- type = get_byte(s->pb);
- size = get_be24(s->pb);
- dts = get_be24(s->pb);
- dts |= get_byte(s->pb) << 24;
-// av_log(s, AV_LOG_DEBUG, "type:%d, size:%d, dts:%d\n", type, size, dts);
- if (url_feof(s->pb))
- return AVERROR(EIO);
- url_fskip(s->pb, 3); /* stream id, always 0 */
+ for(;;avio_skip(s->pb, 4)){ /* pkt size is repeated at end. skip it */
+ pos = avio_tell(s->pb);
+ type = avio_r8(s->pb);
+ size = avio_rb24(s->pb);
+ dts = avio_rb24(s->pb);
+ dts |= avio_r8(s->pb) << 24;
+ av_dlog(s, "type:%d, size:%d, dts:%"PRId64"\n", type, size, dts);
+ if (s->pb->eof_reached)
+ return AVERROR_EOF;
+ avio_skip(s->pb, 3); /* stream id, always 0 */
flags = 0;
if(size == 0)
continue;
- next= size + url_ftell(s->pb);
+ next= size + avio_tell(s->pb);
if (type == FLV_TAG_TYPE_AUDIO) {
is_audio=1;
- flags = get_byte(s->pb);
+ flags = avio_r8(s->pb);
size--;
} else if (type == FLV_TAG_TYPE_VIDEO) {
is_audio=0;
- flags = get_byte(s->pb);
+ flags = avio_r8(s->pb);
size--;
if ((flags & 0xf0) == 0x50) /* video info / command frame */
goto skip;
if (type == FLV_TAG_TYPE_META && size > 13+1+4)
flv_read_metabody(s, next);
else /* skip packet */
- av_log(s, AV_LOG_ERROR, "skipping flv packet: type %d, size %d, flags %d\n", type, size, flags);
+ av_log(s, AV_LOG_DEBUG, "skipping flv packet: type %d, size %d, flags %d\n", type, size, flags);
skip:
- url_fseek(s->pb, next, SEEK_SET);
+ avio_seek(s->pb, next, SEEK_SET);
continue;
}
break;
}
if(i == s->nb_streams){
- av_log(NULL, AV_LOG_ERROR, "invalid stream\n");
+ av_log(s, AV_LOG_ERROR, "invalid stream\n");
st= create_stream(s, is_audio);
s->ctx_flags &= ~AVFMTCTX_NOHEADER;
}
-// av_log(NULL, AV_LOG_DEBUG, "%d %X %d \n", is_audio, flags, st->discard);
+ av_dlog(s, "%d %X %d \n", is_audio, flags, st->discard);
if( (st->discard >= AVDISCARD_NONKEY && !((flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_KEY || is_audio))
||(st->discard >= AVDISCARD_BIDIR && ((flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_DISP_INTER && !is_audio))
|| st->discard >= AVDISCARD_ALL
){
- url_fseek(s->pb, next, SEEK_SET);
+ avio_seek(s->pb, next, SEEK_SET);
continue;
}
if ((flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_KEY)
}
// if not streamed and no duration from metadata then seek to end to find the duration from the timestamps
- if(!url_is_streamed(s->pb) && s->duration==AV_NOPTS_VALUE){
+ if(s->pb->seekable && (!s->duration || s->duration==AV_NOPTS_VALUE)){
int size;
- const int64_t pos= url_ftell(s->pb);
- const int64_t fsize= url_fsize(s->pb);
- url_fseek(s->pb, fsize-4, SEEK_SET);
- size= get_be32(s->pb);
- url_fseek(s->pb, fsize-3-size, SEEK_SET);
- if(size == get_be24(s->pb) + 11){
- s->duration= get_be24(s->pb) * (int64_t)AV_TIME_BASE / 1000;
+ const int64_t pos= avio_tell(s->pb);
+ const int64_t fsize= avio_size(s->pb);
+ avio_seek(s->pb, fsize-4, SEEK_SET);
+ size= avio_rb32(s->pb);
+ avio_seek(s->pb, fsize-3-size, SEEK_SET);
+ if(size == avio_rb24(s->pb) + 11){
+ uint32_t ts = avio_rb24(s->pb);
+ ts |= avio_r8(s->pb) << 24;
+ s->duration = ts * (int64_t)AV_TIME_BASE / 1000;
}
- url_fseek(s->pb, pos, SEEK_SET);
+ avio_seek(s->pb, pos, SEEK_SET);
}
if(is_audio){
if (st->codec->codec_id == CODEC_ID_AAC ||
st->codec->codec_id == CODEC_ID_H264) {
- int type = get_byte(s->pb);
+ int type = avio_r8(s->pb);
size--;
if (st->codec->codec_id == CODEC_ID_H264) {
- int32_t cts = (get_be24(s->pb)+0xff800000)^0xff800000; // sign extension
+ int32_t cts = (avio_rb24(s->pb)+0xff800000)^0xff800000; // sign extension
pts = dts + cts;
if (cts < 0) { // dts are wrong
flv->wrong_dts = 1;
if (type == 0) {
if ((ret = flv_get_extradata(s, st, size)) < 0)
return ret;
- goto retry;
+ if (st->codec->codec_id == CODEC_ID_AAC) {
+ MPEG4AudioConfig cfg;
+ avpriv_mpeg4audio_get_config(&cfg, st->codec->extradata,
+ st->codec->extradata_size);
+ st->codec->channels = cfg.channels;
+ if (cfg.ext_sample_rate)
+ st->codec->sample_rate = cfg.ext_sample_rate;
+ else
+ st->codec->sample_rate = cfg.sample_rate;
+ av_dlog(s, "mp4a config channels %d sample rate %d\n",
+ st->codec->channels, st->codec->sample_rate);
+ }
+
+ ret = AVERROR(EAGAIN);
+ goto leave;
}
}
+ /* skip empty data packets */
+ if (!size) {
+ ret = AVERROR(EAGAIN);
+ goto leave;
+ }
+
ret= av_get_packet(s->pb, pkt, size);
- if (ret <= 0) {
+ if (ret < 0) {
return AVERROR(EIO);
}
/* note: we need to modify the packet size here to handle the last
pkt->stream_index = st->index;
if (is_audio || ((flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_KEY))
- pkt->flags |= PKT_FLAG_KEY;
+ pkt->flags |= AV_PKT_FLAG_KEY;
+leave:
+ avio_skip(s->pb, 4);
return ret;
}
-AVInputFormat flv_demuxer = {
- "flv",
- NULL_IF_CONFIG_SMALL("FLV format"),
- sizeof(FLVContext),
- flv_probe,
- flv_read_header,
- flv_read_packet,
+static int flv_read_seek(AVFormatContext *s, int stream_index,
+ int64_t ts, int flags)
+{
+ 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);
+ }
+
+ if (ret == AVERROR(ENOSYS))
+ ret = av_seek_frame(s, stream_index, ts, flags);
+ return ret;
+}
+#endif
+
+AVInputFormat ff_flv_demuxer = {
+ .name = "flv",
+ .long_name = NULL_IF_CONFIG_SMALL("FLV format"),
+ .priv_data_size = sizeof(FLVContext),
+ .read_probe = flv_probe,
+ .read_header = flv_read_header,
+ .read_packet = flv_read_packet,
+ .read_seek = flv_read_seek,
+#if 0
+ .read_seek2 = flv_read_seek2,
+#endif
.extensions = "flv",
.value = CODEC_ID_FLV1,
};
projects / ffmpeg / blobdiff