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Code Issues Releases Wiki Activity

vd_lavc: fix decoder init failure path

Browse Source 
libavcodec decoder initialization failure caused a segfault, because it
wasn't properly reported back in init().

Also remove the return value from init_avctx(), which actually makes
things simpler. Instead, ctx->avctx can be checked to see whether
initialization was ok.
This commit is contained in:
wm4 2013-04-27 13:36:09 +02:00
parent 0cb732f9f1
commit bf48f1ecce
1 changed files with 18 additions and 14 deletions
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32
video/decode/vd_lavc.c
View File

@ -59,7 +59,7 @@
#include "core/m_option.h"
static int init_avctx(sh_video_t *sh, const char *decoder, struct hwdec *hwdec);
static void init_avctx(sh_video_t *sh, const char *decoder, struct hwdec *hwdec);
static void uninit_avctx(sh_video_t *sh);
static void setup_refcounting_hw(struct AVCodecContext *s);
static void draw_slice_hwdec(struct AVCodecContext *s, const AVFrame *src,
@ -167,16 +167,18 @@ static int init(sh_video_t *sh, const char *decoder)
}
}
if (!init_avctx(sh, decoder, hwdec)) {
init_avctx(sh, decoder, hwdec);
if (!ctx->avctx) {
if (ctx->software_fallback_decoder) {
mp_tmsg(MSGT_DECVIDEO, MSGL_ERR, "Error initializing hardware "
"decoding, falling back to software decoding.\n");
decoder = ctx->software_fallback_decoder;
ctx->software_fallback_decoder = NULL;
if (!init_avctx(sh, decoder, NULL)) {
uninit(sh);
return 0;
}
init_avctx(sh, decoder, NULL);
}
if (!ctx->avctx) {
uninit(sh);
return 0;
}
}
return 1;
@ -240,12 +242,14 @@ static void set_from_bih(AVCodecContext *avctx, uint32_t format,
avctx->coded_height = bih->biHeight;
}
static int init_avctx(sh_video_t *sh, const char *decoder, struct hwdec *hwdec)
static void init_avctx(sh_video_t *sh, const char *decoder, struct hwdec *hwdec)
{
vd_ffmpeg_ctx *ctx = sh->context;
struct lavc_param *lavc_param = &sh->opts->lavc_param;
bool mp_rawvideo = false;
assert(!ctx->avctx);
if (strcmp(decoder, "mp-rawvideo") == 0) {
mp_rawvideo = true;
decoder = "rawvideo";
@ -253,7 +257,7 @@ static int init_avctx(sh_video_t *sh, const char *decoder, struct hwdec *hwdec)
AVCodec *lavc_codec = avcodec_find_decoder_by_name(decoder);
if (!lavc_codec)
return 0;
return;
ctx->do_dr1 = ctx->do_hw_dr1 = 0;
ctx->pix_fmt = PIX_FMT_NONE;
@ -325,8 +329,8 @@ static int init_avctx(sh_video_t *sh, const char *decoder, struct hwdec *hwdec)
mp_msg(MSGT_DECVIDEO, MSGL_ERR,
"Your options /%s/ look like gibberish to me pal\n",
lavc_param->avopt);
uninit(sh);
return 0;
uninit_avctx(sh);
return;
}
}
@ -356,9 +360,8 @@ static int init_avctx(sh_video_t *sh, const char *decoder, struct hwdec *hwdec)
if (avcodec_open2(avctx, lavc_codec, NULL) < 0) {
mp_tmsg(MSGT_DECVIDEO, MSGL_ERR, "Could not open codec.\n");
uninit_avctx(sh);
return 0;
return;
}
return 1;
}
static void uninit_avctx(sh_video_t *sh)
@ -374,7 +377,7 @@ static void uninit_avctx(sh_video_t *sh)
av_freep(&avctx->slice_offset);
}
av_freep(&avctx);
av_freep(&ctx->avctx);
avcodec_free_frame(&ctx->pic);
#if !HAVE_AVUTIL_REFCOUNTING
@ -711,7 +714,8 @@ static struct mp_image *decode_with_fallback(struct sh_video *sh,
"decoding, falling back to software decoding.\n");
const char *decoder = ctx->software_fallback_decoder;
ctx->software_fallback_decoder = NULL;
if (init_avctx(sh, decoder, NULL)) {
init_avctx(sh, decoder, NULL);
if (ctx->avctx) {
mpi = NULL;
decode(sh, packet, flags, reordered_pts, &mpi);
return mpi;