decoder/ffmpeg: add "pure" attributes
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@ -198,6 +198,7 @@ ffmpeg_init(gcc_unused const config_param ¶m)
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return true;
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}
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gcc_pure
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static int
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ffmpeg_find_audio_stream(const AVFormatContext &format_context)
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{
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@ -252,7 +253,7 @@ timestamp_fallback(int64_t t, int64_t fallback)
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* assume that the stream's start time is zero, which appears to be
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* the best way out of that situation.
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*/
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static int64_t
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static constexpr int64_t
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start_time_fallback(const AVStream &stream)
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{
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return timestamp_fallback(stream.start_time, 0);
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