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| author | Justin Ruggles <justin.ruggles@gmail.com> | 2009-06-24 22:10:53 +0000 |
|---|---|---|
| committer | Justin Ruggles <justin.ruggles@gmail.com> | 2009-06-24 22:10:53 +0000 |
| commit | c1c206b343037b4f3c288208b96d6b554b6e7f95 (patch) | |
| tree | dec1f9c98ac6ecdb6a6be37809618fd27467e8d3 /libavformat/flvdec.c | |
| parent | c173a0881fd669930b1dbf18f9f8436764662eb4 (diff) | |
flvdec: Build a Speex header during FLV demuxing using required and
default values. This is needed because FLV files with Speex do not
contain a Speex header, which is necessary for stream copy.
Originally committed as revision 19267 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavformat/flvdec.c')
| -rw-r--r-- | libavformat/flvdec.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/libavformat/flvdec.c b/libavformat/flvdec.c index f72ae38899..060d817c6b 100644 --- a/libavformat/flvdec.c +++ b/libavformat/flvdec.c @@ -24,6 +24,7 @@ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ +#include "libavcodec/bytestream.h" #include "libavcodec/mpeg4audio.h" #include "avformat.h" #include "flv.h" @@ -43,6 +44,32 @@ static int flv_probe(AVProbeData *p) return 0; } +/** + * Builds a Speex header. + * This is not needed for the libavcodec libspeex decoder, but is needed for + * stream copy and for decoders which require a header. + */ +static void flv_build_speex_header(uint8_t *extradata) +{ + memset(extradata, 0, 80); + bytestream_put_buffer(&extradata, "Speex ", 8); // speex_string + bytestream_put_buffer(&extradata, "1.2rc1", 6); // speex_version + extradata += 14; // speex_version padding + bytestream_put_le32(&extradata, 1); // speex_version_id + bytestream_put_le32(&extradata, 80); // header_size + bytestream_put_le32(&extradata, 16000); // rate + bytestream_put_le32(&extradata, 1); // mode + bytestream_put_le32(&extradata, 4); // mode_bitstream_version + bytestream_put_le32(&extradata, 1); // nb_channels + bytestream_put_le32(&extradata, -1); // bitrate + bytestream_put_le32(&extradata, 320); // frame_size + // vbr = 0 + // frames_per_packet = 0 + // extra_headers = 0 + // reserved1 = 0 + // reserved2 = 0 +} + static void flv_set_audio_codec(AVFormatContext *s, AVStream *astream, int flv_codecid) { AVCodecContext *acodec = astream->codec; switch(flv_codecid) { @@ -62,6 +89,13 @@ static void flv_set_audio_codec(AVFormatContext *s, AVStream *astream, int flv_c case FLV_CODECID_SPEEX: acodec->codec_id = CODEC_ID_SPEEX; acodec->sample_rate = 16000; + acodec->extradata = av_mallocz(80 + FF_INPUT_BUFFER_PADDING_SIZE); + if (acodec->extradata) { + acodec->extradata_size = 80; + flv_build_speex_header(acodec->extradata); + } else { + av_log(s, AV_LOG_WARNING, "Unable to create Speex extradata\n"); + } break; case FLV_CODECID_MP3 : acodec->codec_id = CODEC_ID_MP3 ; astream->need_parsing = AVSTREAM_PARSE_FULL; break; case FLV_CODECID_NELLYMOSER_8KHZ_MONO: |