static int bfi_read_header(AVFormatContext * s) { BFIContext *bfi = s->priv_data; AVIOContext *pb = s->pb; AVStream *vstream; AVStream *astream; int fps, chunk_header; /* Initialize the video codec... */ vstream = avformat_new_stream(s, NULL); if (!vstream) return AVERROR(ENOMEM); /* Initialize the audio codec... */ astream = avformat_new_stream(s, NULL); if (!astream) return AVERROR(ENOMEM); /* Set the total number of frames. */ avio_skip(pb, 8); chunk_header = avio_rl32(pb); bfi->nframes = avio_rl32(pb); avio_rl32(pb); avio_rl32(pb); avio_rl32(pb); fps = avio_rl32(pb); avio_skip(pb, 12); vstream->codecpar->width = avio_rl32(pb); vstream->codecpar->height = avio_rl32(pb); /*Load the palette to extradata */ avio_skip(pb, 8); vstream->codecpar->extradata = av_malloc(768); if (!vstream->codecpar->extradata) return AVERROR(ENOMEM); vstream->codecpar->extradata_size = 768; avio_read(pb, vstream->codecpar->extradata, vstream->codecpar->extradata_size); astream->codecpar->sample_rate = avio_rl32(pb); if (astream->codecpar->sample_rate <= 0) { av_log(s, AV_LOG_ERROR, "Invalid sample rate %d\n", astream->codecpar->sample_rate); return AVERROR_INVALIDDATA; } /* Set up the video codec... */ avpriv_set_pts_info(vstream, 32, 1, fps); vstream->codecpar->codec_type = AVMEDIA_TYPE_VIDEO; vstream->codecpar->codec_id = AV_CODEC_ID_BFI; vstream->codecpar->format = AV_PIX_FMT_PAL8; vstream->nb_frames = vstream->duration = bfi->nframes; /* Set up the audio codec now... */ astream->codecpar->codec_type = AVMEDIA_TYPE_AUDIO; astream->codecpar->codec_id = AV_CODEC_ID_PCM_U8; astream->codecpar->channels = 1; astream->codecpar->channel_layout = AV_CH_LAYOUT_MONO; astream->codecpar->bits_per_coded_sample = 8; astream->codecpar->bit_rate = astream->codecpar->sample_rate * astream->codecpar->bits_per_coded_sample; avio_seek(pb, chunk_header - 3, SEEK_SET); avpriv_set_pts_info(astream, 64, 1, astream->codecpar->sample_rate); return 0; }