static int rv10_write_header(AVFormatContext *ctx, int data_size, int index_pos) { RMMuxContext *rm = ctx->priv_data; AVIOContext *s = ctx->pb; StreamInfo *stream; unsigned char *data_offset_ptr, *start_ptr; const char *desc, *mimetype; int nb_packets, packet_total_size, packet_max_size, size, packet_avg_size, i; int bit_rate, v, duration, flags, data_pos; AVDictionaryEntry *tag; start_ptr = s->buf_ptr; ffio_wfourcc(s, ".RMF"); avio_wb32(s,18); /* header size */ avio_wb16(s,0); avio_wb32(s,0); avio_wb32(s,4 + ctx->nb_streams); /* num headers */ ffio_wfourcc(s,"PROP"); avio_wb32(s, 50); avio_wb16(s, 0); packet_max_size = 0; packet_total_size = 0; nb_packets = 0; bit_rate = 0; duration = 0; for(i=0; i<ctx->nb_streams; i++) { StreamInfo *stream = &rm->streams[i]; bit_rate += stream->bit_rate; if (stream->packet_max_size > packet_max_size) packet_max_size = stream->packet_max_size; nb_packets += stream->nb_packets; packet_total_size += stream->packet_total_size; /* select maximum duration */ v = 1000LL * stream->total_frames / stream->frame_rate; if (v > duration) duration = v; } avio_wb32(s, bit_rate); /* max bit rate */ avio_wb32(s, bit_rate); /* avg bit rate */ avio_wb32(s, packet_max_size); /* max packet size */ if (nb_packets > 0) packet_avg_size = packet_total_size / nb_packets; else packet_avg_size = 0; avio_wb32(s, packet_avg_size); /* avg packet size */ avio_wb32(s, nb_packets); /* num packets */ avio_wb32(s, duration); /* duration */ avio_wb32(s, BUFFER_DURATION); /* preroll */ avio_wb32(s, index_pos); /* index offset */ /* computation of data the data offset */ data_offset_ptr = s->buf_ptr; avio_wb32(s, 0); /* data offset : will be patched after */ avio_wb16(s, ctx->nb_streams); /* num streams */ flags = 1 | 2; /* save allowed & perfect play */ if (!s->seekable) flags |= 4; /* live broadcast */ avio_wb16(s, flags); /* comments */ ffio_wfourcc(s,"CONT"); size = 4 * 2 + 10; for(i=0; i<FF_ARRAY_ELEMS(ff_rm_metadata); i++) { tag = av_dict_get(ctx->metadata, ff_rm_metadata[i], NULL, 0); if(tag) size += strlen(tag->value); } avio_wb32(s,size); avio_wb16(s,0); for(i=0; i<FF_ARRAY_ELEMS(ff_rm_metadata); i++) { tag = av_dict_get(ctx->metadata, ff_rm_metadata[i], NULL, 0); put_str(s, tag ? tag->value : ""); } for(i=0; i<ctx->nb_streams; i++) { int codec_data_size; stream = &rm->streams[i]; if (stream->enc->codec_type == AVMEDIA_TYPE_AUDIO) { desc = "The Audio Stream"; mimetype = "audio/x-pn-realaudio"; codec_data_size = 73; } else { desc = "The Video Stream"; mimetype = "video/x-pn-realvideo"; codec_data_size = 34; } ffio_wfourcc(s,"MDPR"); size = 10 + 9 * 4 + strlen(desc) + strlen(mimetype) + codec_data_size; avio_wb32(s, size); avio_wb16(s, 0); avio_wb16(s, i); /* stream number */ avio_wb32(s, stream->bit_rate); /* max bit rate */ avio_wb32(s, stream->bit_rate); /* avg bit rate */ avio_wb32(s, stream->packet_max_size); /* max packet size */ if (stream->nb_packets > 0) packet_avg_size = stream->packet_total_size / stream->nb_packets; else packet_avg_size = 0; avio_wb32(s, packet_avg_size); /* avg packet size */ avio_wb32(s, 0); /* start time */ avio_wb32(s, BUFFER_DURATION); /* preroll */ /* duration */ if (!s->seekable || !stream->total_frames) avio_wb32(s, (int)(3600 * 1000)); else avio_wb32(s, (int)(stream->total_frames * 1000 / stream->frame_rate)); put_str8(s, desc); put_str8(s, mimetype); avio_wb32(s, codec_data_size); if (stream->enc->codec_type == AVMEDIA_TYPE_AUDIO) { int coded_frame_size, fscode, sample_rate; sample_rate = stream->enc->sample_rate; coded_frame_size = (stream->enc->bit_rate * stream->enc->frame_size) / (8 * sample_rate); /* audio codec info */ avio_write(s, ".ra", 3); avio_w8(s, 0xfd); avio_wb32(s, 0x00040000); /* version */ ffio_wfourcc(s, ".ra4"); avio_wb32(s, 0x01b53530); /* stream length */ avio_wb16(s, 4); /* unknown */ avio_wb32(s, 0x39); /* header size */ switch(sample_rate) { case 48000: case 24000: case 12000: fscode = 1; break; default: case 44100: case 22050: case 11025: fscode = 2; break; case 32000: case 16000: case 8000: fscode = 3; } avio_wb16(s, fscode); /* codec additional info, for AC-3, seems to be a frequency code */ /* special hack to compensate rounding errors... */ if (coded_frame_size == 557) coded_frame_size--; avio_wb32(s, coded_frame_size); /* frame length */ avio_wb32(s, 0x51540); /* unknown */ avio_wb32(s, stream->enc->bit_rate / 8 * 60); /* bytes per minute */ avio_wb32(s, stream->enc->bit_rate / 8 * 60); /* bytes per minute */ avio_wb16(s, 0x01); /* frame length : seems to be very important */ avio_wb16(s, coded_frame_size); avio_wb32(s, 0); /* unknown */ avio_wb16(s, stream->enc->sample_rate); /* sample rate */ avio_wb32(s, 0x10); /* unknown */ avio_wb16(s, stream->enc->channels); put_str8(s, "Int0"); /* codec name */ if (stream->enc->codec_tag) { avio_w8(s, 4); /* tag length */ avio_wl32(s, stream->enc->codec_tag); } else { av_log(ctx, AV_LOG_ERROR, "Invalid codec tag\n"); return -1; } avio_wb16(s, 0); /* title length */ avio_wb16(s, 0); /* author length */ avio_wb16(s, 0); /* copyright length */ avio_w8(s, 0); /* end of header */ } else { /* video codec info */ avio_wb32(s,34); /* size */ ffio_wfourcc(s, "VIDO"); if(stream->enc->codec_id == AV_CODEC_ID_RV10) ffio_wfourcc(s,"RV10"); else ffio_wfourcc(s,"RV20"); avio_wb16(s, stream->enc->width); avio_wb16(s, stream->enc->height); avio_wb16(s, (int) stream->frame_rate); /* frames per seconds ? */ avio_wb32(s,0); /* unknown meaning */ avio_wb16(s, (int) stream->frame_rate); /* unknown meaning */ avio_wb32(s,0); /* unknown meaning */ avio_wb16(s, 8); /* unknown meaning */ /* Seems to be the codec version: only use basic H263. The next versions seems to add a diffential DC coding as in MPEG... nothing new under the sun */ if(stream->enc->codec_id == AV_CODEC_ID_RV10) avio_wb32(s,0x10000000); else avio_wb32(s,0x20103001); //avio_wb32(s,0x10003000); } } /* patch data offset field */ data_pos = s->buf_ptr - start_ptr; rm->data_pos = data_pos; data_offset_ptr[0] = data_pos >> 24; data_offset_ptr[1] = data_pos >> 16; data_offset_ptr[2] = data_pos >> 8; data_offset_ptr[3] = data_pos; /* data stream */ ffio_wfourcc(s, "DATA"); avio_wb32(s,data_size + 10 + 8); avio_wb16(s,0); avio_wb32(s, nb_packets); /* number of packets */ avio_wb32(s,0); /* next data header */ return 0; }
static void rv10_write_header(AVFormatContext *ctx, int data_size, int index_pos) { RMMuxContext *rm = ctx->priv_data; ByteIOContext *s = ctx->pb; StreamInfo *stream; unsigned char *data_offset_ptr, *start_ptr; const char *desc, *mimetype; int nb_packets, packet_total_size, packet_max_size, size, packet_avg_size, i; int bit_rate, v, duration, flags, data_pos; start_ptr = s->buf_ptr; put_tag(s, ".RMF"); put_be32(s,18); /* header size */ put_be16(s,0); put_be32(s,0); put_be32(s,4 + ctx->nb_streams); /* num headers */ put_tag(s,"PROP"); put_be32(s, 50); put_be16(s, 0); packet_max_size = 0; packet_total_size = 0; nb_packets = 0; bit_rate = 0; duration = 0; for(i=0;i<ctx->nb_streams;i++) { StreamInfo *stream = &rm->streams[i]; bit_rate += stream->bit_rate; if (stream->packet_max_size > packet_max_size) packet_max_size = stream->packet_max_size; nb_packets += stream->nb_packets; packet_total_size += stream->packet_total_size; /* select maximum duration */ v = (int) (1000.0 * (float)stream->total_frames / stream->frame_rate); if (v > duration) duration = v; } put_be32(s, bit_rate); /* max bit rate */ put_be32(s, bit_rate); /* avg bit rate */ put_be32(s, packet_max_size); /* max packet size */ if (nb_packets > 0) packet_avg_size = packet_total_size / nb_packets; else packet_avg_size = 0; put_be32(s, packet_avg_size); /* avg packet size */ put_be32(s, nb_packets); /* num packets */ put_be32(s, duration); /* duration */ put_be32(s, BUFFER_DURATION); /* preroll */ put_be32(s, index_pos); /* index offset */ /* computation of data the data offset */ data_offset_ptr = s->buf_ptr; put_be32(s, 0); /* data offset : will be patched after */ put_be16(s, ctx->nb_streams); /* num streams */ flags = 1 | 2; /* save allowed & perfect play */ if (url_is_streamed(s)) flags |= 4; /* live broadcast */ put_be16(s, flags); /* comments */ put_tag(s,"CONT"); size = strlen(ctx->title) + strlen(ctx->author) + strlen(ctx->copyright) + strlen(ctx->comment) + 4 * 2 + 10; put_be32(s,size); put_be16(s,0); put_str(s, ctx->title); put_str(s, ctx->author); put_str(s, ctx->copyright); put_str(s, ctx->comment); for(i=0;i<ctx->nb_streams;i++) { int codec_data_size; stream = &rm->streams[i]; if (stream->enc->codec_type == CODEC_TYPE_AUDIO) { desc = "The Audio Stream"; mimetype = "audio/x-pn-realaudio"; codec_data_size = 73; } else { desc = "The Video Stream"; mimetype = "video/x-pn-realvideo"; codec_data_size = 34; } put_tag(s,"MDPR"); size = 10 + 9 * 4 + strlen(desc) + strlen(mimetype) + codec_data_size; put_be32(s, size); put_be16(s, 0); put_be16(s, i); /* stream number */ put_be32(s, stream->bit_rate); /* max bit rate */ put_be32(s, stream->bit_rate); /* avg bit rate */ put_be32(s, stream->packet_max_size); /* max packet size */ if (stream->nb_packets > 0) packet_avg_size = stream->packet_total_size / stream->nb_packets; else packet_avg_size = 0; put_be32(s, packet_avg_size); /* avg packet size */ put_be32(s, 0); /* start time */ put_be32(s, BUFFER_DURATION); /* preroll */ /* duration */ if (url_is_streamed(s) || !stream->total_frames) put_be32(s, (int)(3600 * 1000)); else put_be32(s, (int)(stream->total_frames * 1000 / stream->frame_rate)); put_str8(s, desc); put_str8(s, mimetype); put_be32(s, codec_data_size); if (stream->enc->codec_type == CODEC_TYPE_AUDIO) { int coded_frame_size, fscode, sample_rate; sample_rate = stream->enc->sample_rate; coded_frame_size = (stream->enc->bit_rate * stream->enc->frame_size) / (8 * sample_rate); /* audio codec info */ put_tag(s, ".ra"); put_byte(s, 0xfd); put_be32(s, 0x00040000); /* version */ put_tag(s, ".ra4"); put_be32(s, 0x01b53530); /* stream length */ put_be16(s, 4); /* unknown */ put_be32(s, 0x39); /* header size */ switch(sample_rate) { case 48000: case 24000: case 12000: fscode = 1; break; default: case 44100: case 22050: case 11025: fscode = 2; break; case 32000: case 16000: case 8000: fscode = 3; } put_be16(s, fscode); /* codec additional info, for AC-3, seems to be a frequency code */ /* special hack to compensate rounding errors... */ if (coded_frame_size == 557) coded_frame_size--; put_be32(s, coded_frame_size); /* frame length */ put_be32(s, 0x51540); /* unknown */ put_be32(s, 0x249f0); /* unknown */ put_be32(s, 0x249f0); /* unknown */ put_be16(s, 0x01); /* frame length : seems to be very important */ put_be16(s, coded_frame_size); put_be32(s, 0); /* unknown */ put_be16(s, stream->enc->sample_rate); /* sample rate */ put_be32(s, 0x10); /* unknown */ put_be16(s, stream->enc->channels); put_str8(s, "Int0"); /* codec name */ put_str8(s, "dnet"); /* codec name */ put_be16(s, 0); /* title length */ put_be16(s, 0); /* author length */ put_be16(s, 0); /* copyright length */ put_byte(s, 0); /* end of header */ } else { /* video codec info */ put_be32(s,34); /* size */ if(stream->enc->codec_id == CODEC_ID_RV10) put_tag(s,"VIDORV10"); else put_tag(s,"VIDORV20"); put_be16(s, stream->enc->width); put_be16(s, stream->enc->height); put_be16(s, (int) stream->frame_rate); /* frames per seconds ? */ put_be32(s,0); /* unknown meaning */ put_be16(s, (int) stream->frame_rate); /* unknown meaning */ put_be32(s,0); /* unknown meaning */ put_be16(s, 8); /* unknown meaning */ /* Seems to be the codec version: only use basic H263. The next versions seems to add a diffential DC coding as in MPEG... nothing new under the sun */ if(stream->enc->codec_id == CODEC_ID_RV10) put_be32(s,0x10000000); else put_be32(s,0x20103001); //put_be32(s,0x10003000); } } /* patch data offset field */ data_pos = s->buf_ptr - start_ptr; rm->data_pos = data_pos; data_offset_ptr[0] = data_pos >> 24; data_offset_ptr[1] = data_pos >> 16; data_offset_ptr[2] = data_pos >> 8; data_offset_ptr[3] = data_pos; /* data stream */ put_tag(s,"DATA"); put_be32(s,data_size + 10 + 8); put_be16(s,0); put_be32(s, nb_packets); /* number of packets */ put_be32(s,0); /* next data header */ }