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lavc/alac: Export samplerate.

Fixes ticket #6096.

Carl Eugen Hoyos authored on 2017/01/30 19:03:21
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@@ -76,6 +76,7 @@ typedef struct ALACContext {
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     uint8_t  rice_history_mult;
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     uint8_t  rice_initial_history;
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     uint8_t  rice_limit;
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+    int      sample_rate;
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     int extra_bits;     /**< number of extra bits beyond 16-bit */
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     int nb_samples;     /**< number of samples in the current frame */
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@@ -538,7 +539,7 @@ static int alac_set_info(ALACContext *alac)
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     bytestream2_get_be16u(&gb); // maxRun
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     bytestream2_get_be32u(&gb); // max coded frame size
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     bytestream2_get_be32u(&gb); // average bitrate
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-    bytestream2_get_be32u(&gb); // samplerate
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+    alac->sample_rate          = bytestream2_get_be32u(&gb);
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     return 0;
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 }
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@@ -570,6 +571,7 @@ static av_cold int alac_decode_init(AVCodecContext * avctx)
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              return AVERROR_PATCHWELCOME;
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     }
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     avctx->bits_per_raw_sample = alac->sample_size;
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+    avctx->sample_rate         = alac->sample_rate;
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     if (alac->channels < 1) {
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         av_log(avctx, AV_LOG_WARNING, "Invalid channel count\n");