From c54e00610f20d2342fe9b17a5460abfbd411c8fb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Reimar=20D=C3=B6ffinger?= <Reimar.Doeffinger@gmx.de>
Date: Thu, 5 Jan 2012 21:01:56 +0100
Subject: [PATCH] sipr: fall back to setting mode based on bit_rate.
Not all applications (e.g. MPlayer) set block_align, and
when using a different demuxer it might not even be
easily available.
So fall back to selecting mode based on bit rate as before
if block_align has not useful value.
It can't be worse than failing to decode completely.
(cherry picked from commit 1d0d63052b82c76e10c45cd38cdd27677de72e81)
CC: libav-stable@libav.org
Signed-off-by: Reinhard Tartler <siretart@tauware.de>
---
libavcodec/sipr.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/libavcodec/sipr.c b/libavcodec/sipr.c
index 971d05bde88..1e9168a76f2 100644
--- a/libavcodec/sipr.c
+++ b/libavcodec/sipr.c
@@ -485,8 +485,13 @@ static av_cold int sipr_decoder_init(AVCodecContext * avctx)
case 29: ctx->mode = MODE_6k5; break;
case 37: ctx->mode = MODE_5k0; break;
default:
- av_log(avctx, AV_LOG_ERROR, "Invalid block_align: %d\n", avctx->block_align);
- return AVERROR(EINVAL);
+ if (avctx->bit_rate > 12200) ctx->mode = MODE_16k;
+ else if (avctx->bit_rate > 7500 ) ctx->mode = MODE_8k5;
+ else if (avctx->bit_rate > 5750 ) ctx->mode = MODE_6k5;
+ else ctx->mode = MODE_5k0;
+ av_log(avctx, AV_LOG_WARNING,
+ "Invalid block_align: %d. Mode %s guessed based on bitrate: %d\n",
+ avctx->block_align, modes[ctx->mode].mode_name, avctx->bit_rate);
}
av_log(avctx, AV_LOG_DEBUG, "Mode: %s\n", modes[ctx->mode].mode_name);
--
GitLab