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, | ||||
|  | ||||
| #endif /* !OLD_FFMPEG_INCLUDES */ | ||||
|  | ||||
| #ifndef AV_VERSION_INT | ||||
| #define AV_VERSION_INT(a, b, c) (a<<16 | b<<8 | c) | ||||
| #endif | ||||
|  | ||||
| struct mpd_ffmpeg_stream { | ||||
| 	struct decoder *decoder; | ||||
| 	struct input_stream *input; | ||||
| @@ -230,7 +234,7 @@ ffmpeg_send_packet(struct decoder *decoder, struct input_stream *is, | ||||
| static enum sample_format | ||||
| ffmpeg_sample_format(G_GNUC_UNUSED const AVCodecContext *codec_context) | ||||
| { | ||||
| #if LIBAVCODEC_VERSION_INT >= ((51<<16)+(41<<8)+0) | ||||
| #if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(51, 41, 0) | ||||
| 	switch (codec_context->sample_fmt) { | ||||
| 	case SAMPLE_FMT_S16: | ||||
| 		return SAMPLE_FORMAT_S16; | ||||
|   | ||||
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	 Max Kellermann
					Max Kellermann