decoder/ffmpeg: define fallback macro AV_VERSION_INT()
For ffmpeg < 0.5. Copied from libavutil 0.5.
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@ -81,6 +81,10 @@ mpd_ffmpeg_log_callback(G_GNUC_UNUSED void *ptr, int level,
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#endif /* !OLD_FFMPEG_INCLUDES */
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#ifndef AV_VERSION_INT
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#define AV_VERSION_INT(a, b, c) (a<<16 | b<<8 | c)
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#endif
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struct mpd_ffmpeg_stream {
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struct decoder *decoder;
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struct input_stream *input;
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@ -230,7 +234,7 @@ ffmpeg_send_packet(struct decoder *decoder, struct input_stream *is,
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static enum sample_format
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ffmpeg_sample_format(G_GNUC_UNUSED const AVCodecContext *codec_context)
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{
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#if LIBAVCODEC_VERSION_INT >= ((51<<16)+(41<<8)+0)
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#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(51, 41, 0)
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switch (codec_context->sample_fmt) {
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case SAMPLE_FMT_S16:
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return SAMPLE_FORMAT_S16;
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