[FFmpeg-devel] [PATCH]lavc/alac: Export samplerate
Carl Eugen Hoyos
cehoyos at ag.or.at
Mon Jan 30 12:06:33 EET 2017
Hi!
I suspect attached patch makes using the alac decoder easier with
non-FFmpeg demuxers.
Please comment, Carl Eugen
-------------- next part --------------
From c3a4a0ca8a5ce07cabb339f0288e6b1223dda1b0 Mon Sep 17 00:00:00 2001
From: Carl Eugen Hoyos <cehoyos at ag.or.at>
Date: Mon, 30 Jan 2017 11:03:21 +0100
Subject: [PATCH] lavc/alac: Export samplerate.
Fixes ticket #6096.
---
libavcodec/alac.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/libavcodec/alac.c b/libavcodec/alac.c
index b9c3400..8d234ed 100644
--- a/libavcodec/alac.c
+++ b/libavcodec/alac.c
@@ -76,6 +76,7 @@ typedef struct ALACContext {
uint8_t rice_history_mult;
uint8_t rice_initial_history;
uint8_t rice_limit;
+ int sample_rate;
int extra_bits; /**< number of extra bits beyond 16-bit */
int nb_samples; /**< number of samples in the current frame */
@@ -538,7 +539,7 @@ static int alac_set_info(ALACContext *alac)
bytestream2_get_be16u(&gb); // maxRun
bytestream2_get_be32u(&gb); // max coded frame size
bytestream2_get_be32u(&gb); // average bitrate
- bytestream2_get_be32u(&gb); // samplerate
+ alac->sample_rate = bytestream2_get_be32u(&gb);
return 0;
}
@@ -570,6 +571,7 @@ static av_cold int alac_decode_init(AVCodecContext * avctx)
return AVERROR_PATCHWELCOME;
}
avctx->bits_per_raw_sample = alac->sample_size;
+ avctx->sample_rate = alac->sample_rate;
if (alac->channels < 1) {
av_log(avctx, AV_LOG_WARNING, "Invalid channel count\n");
--
1.7.10.4
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