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#include "avformat.h" |
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#include "mux.h" |
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#include "rawenc.h" |
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static int roq_write_header(struct AVFormatContext *s) |
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{ |
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uint8_t header[] = { |
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0x84, 0x10, 0xFF, 0xFF, 0xFF, 0xFF, 0x1E, 0x00 |
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}; |
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int n; |
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for(n=0;n<s->nb_streams;n++) { |
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if (s->streams[n]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) { |
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unsigned int fps; |
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if (s->streams[n]->avg_frame_rate.den != 1) { |
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av_log(s, AV_LOG_ERROR, "Frame rate must be integer\n"); |
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return AVERROR(EINVAL); |
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} |
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if ((fps=s->streams[n]->avg_frame_rate.num) > 255) { |
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av_log(s, AV_LOG_ERROR, "Frame rate may not exceed 255fps\n"); |
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return AVERROR(EINVAL); |
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} |
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if (fps != 30) { |
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av_log(s, AV_LOG_WARNING, "For vintage compatibility fps must be 30\n"); |
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} |
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header[6] = fps; |
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break; |
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} |
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} |
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avio_write(s->pb, header, 8); |
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return 0; |
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} |
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const FFOutputFormat ff_roq_muxer = { |
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.p.name = "roq", |
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.p.long_name = NULL_IF_CONFIG_SMALL("raw id RoQ"), |
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.p.extensions = "roq", |
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.p.audio_codec = AV_CODEC_ID_ROQ_DPCM, |
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.p.video_codec = AV_CODEC_ID_ROQ, |
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.write_header = roq_write_header, |
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.write_packet = ff_raw_write_packet, |
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}; |
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