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author | Ronald S. Bultje <rsbultje@gmail.com> | 2007-11-06 16:02:33 +0000 |
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committer | Benoit Fouet <benoit.fouet@free.fr> | 2007-11-06 16:02:33 +0000 |
commit | ff1463dc37b2cf3603eb0d61de022651560a63d6 (patch) | |
tree | 06fc735cef9e11b7fddf8aeb8d47990411310c25 /libavformat/rmdec.c | |
parent | 62b341525879ff47cd4e0636c096b614348272e2 (diff) | |
download | ffmpeg-streaming-ff1463dc37b2cf3603eb0d61de022651560a63d6.zip ffmpeg-streaming-ff1463dc37b2cf3603eb0d61de022651560a63d6.tar.gz |
Split out the MDPR chunk reading into its own function.
Patch by Ronald S. Bultje: rsbultje gmail com
Original thread:[FFmpeg-devel] [PATCH 1/6] rmdec.c: ff_rm_read_mdpr_codecdata()
Date: 11/05/2007 09:21 PM
Originally committed as revision 10934 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavformat/rmdec.c')
-rw-r--r-- | libavformat/rmdec.c | 131 |
1 files changed, 73 insertions, 58 deletions
diff --git a/libavformat/rmdec.c b/libavformat/rmdec.c index 09776cd..c12aa97 100644 --- a/libavformat/rmdec.c +++ b/libavformat/rmdec.c @@ -188,6 +188,75 @@ static int rm_read_audio_stream_info(AVFormatContext *s, AVStream *st, return 0; } +static int +ff_rm_read_mdpr_codecdata (AVFormatContext *s, AVStream *st) +{ + ByteIOContext *pb = &s->pb; + unsigned int v; + int codec_data_size, size, res = -1; + int64_t codec_pos; + + codec_data_size = get_be32(pb); + codec_pos = url_ftell(pb); + v = get_be32(pb); + if (v == MKTAG(0xfd, 'a', 'r', '.')) { + /* ra type header */ + if (rm_read_audio_stream_info(s, st, 0)) + return -1; + } else { + int fps, fps2; + if (get_le32(pb) != MKTAG('V', 'I', 'D', 'O')) { + fail1: + av_log(st->codec, AV_LOG_ERROR, "Unsupported video codec\n"); + goto skip; + } + st->codec->codec_tag = get_le32(pb); +// av_log(NULL, AV_LOG_DEBUG, "%X %X\n", st->codec->codec_tag, MKTAG('R', 'V', '2', '0')); + if ( st->codec->codec_tag != MKTAG('R', 'V', '1', '0') + && st->codec->codec_tag != MKTAG('R', 'V', '2', '0') + && st->codec->codec_tag != MKTAG('R', 'V', '3', '0') + && st->codec->codec_tag != MKTAG('R', 'V', '4', '0')) + goto fail1; + st->codec->width = get_be16(pb); + st->codec->height = get_be16(pb); + st->codec->time_base.num= 1; + fps= get_be16(pb); + st->codec->codec_type = CODEC_TYPE_VIDEO; + get_be32(pb); + fps2= get_be16(pb); + get_be16(pb); + + st->codec->extradata_size= codec_data_size - (url_ftell(pb) - codec_pos); + + if(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE <= (unsigned)st->codec->extradata_size){ + //check is redundant as get_buffer() will catch this + av_log(s, AV_LOG_ERROR, "st->codec->extradata_size too large\n"); + return -1; + } + st->codec->extradata= av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE); + get_buffer(pb, st->codec->extradata, st->codec->extradata_size); + +// av_log(NULL, AV_LOG_DEBUG, "fps= %d fps2= %d\n", fps, fps2); + st->codec->time_base.den = fps * st->codec->time_base.num; + switch(((uint8_t*)st->codec->extradata)[4]>>4){ + case 1: st->codec->codec_id = CODEC_ID_RV10; break; + case 2: st->codec->codec_id = CODEC_ID_RV20; break; + case 3: st->codec->codec_id = CODEC_ID_RV30; break; + case 4: st->codec->codec_id = CODEC_ID_RV40; break; + default: goto fail1; + } + } + + res = 0; +skip: + /* skip codec info */ + size = url_ftell(pb) - codec_pos; + url_fskip(pb, codec_data_size - size); + + return res; +} + + static int rm_read_header_old(AVFormatContext *s, AVFormatParameters *ap) { RMContext *rm = s->priv_data; @@ -205,9 +274,8 @@ static int rm_read_header(AVFormatContext *s, AVFormatParameters *ap) RMContext *rm = s->priv_data; AVStream *st; ByteIOContext *pb = &s->pb; - unsigned int tag, v; - int tag_size, size, codec_data_size, i; - int64_t codec_pos; + unsigned int tag; + int tag_size, i; unsigned int start_time, duration; char buf[128]; int flags = 0; @@ -279,63 +347,10 @@ static int rm_read_header(AVFormatContext *s, AVFormatParameters *ap) st->duration = duration; get_str8(pb, buf, sizeof(buf)); /* desc */ get_str8(pb, buf, sizeof(buf)); /* mimetype */ - codec_data_size = get_be32(pb); - codec_pos = url_ftell(pb); st->codec->codec_type = CODEC_TYPE_DATA; av_set_pts_info(st, 64, 1, 1000); - - v = get_be32(pb); - if (v == MKTAG(0xfd, 'a', 'r', '.')) { - /* ra type header */ - if (rm_read_audio_stream_info(s, st, 0)) - return -1; - } else { - int fps, fps2; - if (get_le32(pb) != MKTAG('V', 'I', 'D', 'O')) { - fail1: - av_log(st->codec, AV_LOG_ERROR, "Unsupported video codec\n"); - goto skip; - } - st->codec->codec_tag = get_le32(pb); -// av_log(NULL, AV_LOG_DEBUG, "%X %X\n", st->codec->codec_tag, MKTAG('R', 'V', '2', '0')); - if ( st->codec->codec_tag != MKTAG('R', 'V', '1', '0') - && st->codec->codec_tag != MKTAG('R', 'V', '2', '0') - && st->codec->codec_tag != MKTAG('R', 'V', '3', '0') - && st->codec->codec_tag != MKTAG('R', 'V', '4', '0')) - goto fail1; - st->codec->width = get_be16(pb); - st->codec->height = get_be16(pb); - st->codec->time_base.num= 1; - fps= get_be16(pb); - st->codec->codec_type = CODEC_TYPE_VIDEO; - get_be32(pb); - fps2= get_be16(pb); - get_be16(pb); - - st->codec->extradata_size= codec_data_size - (url_ftell(pb) - codec_pos); - - if(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE <= (unsigned)st->codec->extradata_size){ - //check is redundant as get_buffer() will catch this - av_log(s, AV_LOG_ERROR, "st->codec->extradata_size too large\n"); - return -1; - } - st->codec->extradata= av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE); - get_buffer(pb, st->codec->extradata, st->codec->extradata_size); - -// av_log(NULL, AV_LOG_DEBUG, "fps= %d fps2= %d\n", fps, fps2); - st->codec->time_base.den = fps * st->codec->time_base.num; - switch(((uint8_t*)st->codec->extradata)[4]>>4){ - case 1: st->codec->codec_id = CODEC_ID_RV10; break; - case 2: st->codec->codec_id = CODEC_ID_RV20; break; - case 3: st->codec->codec_id = CODEC_ID_RV30; break; - case 4: st->codec->codec_id = CODEC_ID_RV40; break; - default: goto fail1; - } - } -skip: - /* skip codec info */ - size = url_ftell(pb) - codec_pos; - url_fskip(pb, codec_data_size - size); + if (ff_rm_read_mdpr_codecdata(s, st) < 0) + return -1; break; case MKTAG('D', 'A', 'T', 'A'): goto header_end; |