From cd840656c2bc4b8f6aae883085a0ec0a5e4785f9 Mon Sep 17 00:00:00 2001
From: Jai Menon <jmenon86@gmail.com>
Date: Tue, 26 May 2009 17:04:28 +0000
Subject: [PATCH] Add lowres support to the libopenjpeg wrapper. Fixes issue
1097.
Originally committed as revision 18955 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
libavcodec/libopenjpeg.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/libavcodec/libopenjpeg.c b/libavcodec/libopenjpeg.c
index 2c30c3000af..075bf1ccfe5 100644
--- a/libavcodec/libopenjpeg.c
+++ b/libavcodec/libopenjpeg.c
@@ -89,6 +89,7 @@ static int libopenjpeg_decode_frame(AVCodecContext *avctx,
}
opj_set_event_mgr((opj_common_ptr)dec, NULL, NULL);
+ ctx->dec_params.cp_reduce = avctx->lowres;
// Tie decoder with decoding parameters
opj_setup_decoder(dec, &ctx->dec_params);
stream = opj_cio_open((opj_common_ptr)dec, buf, buf_size);
@@ -106,8 +107,8 @@ static int libopenjpeg_decode_frame(AVCodecContext *avctx,
opj_destroy_decompress(dec);
return -1;
}
- width = image->comps[0].w;
- height = image->comps[0].h;
+ width = image->comps[0].w << avctx->lowres;
+ height = image->comps[0].h << avctx->lowres;
if(avcodec_check_dimensions(avctx, width, height) < 0) {
av_log(avctx, AV_LOG_ERROR, "%dx%d dimension invalid.\n", width, height);
goto done;
--
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