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Code Issues Releases Activity

avcodec/dvbsubdec: Return proper error codes from more functions

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2015-01-10 19:24:27 +01:00
parent ebe3a41ea3
commit 1bf747ae84
1 changed files with 16 additions and 11 deletions
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27
libavcodec/dvbsubdec.c
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@ -1149,7 +1149,7 @@ static int dvbsub_parse_clut_segment(AVCodecContext *avctx,
}
static void dvbsub_parse_region_segment(AVCodecContext *avctx,
static int dvbsub_parse_region_segment(AVCodecContext *avctx,
const uint8_t *buf, int buf_size)
{
DVBSubContext *ctx = avctx->priv_data;
@ -1163,7 +1163,7 @@ static void dvbsub_parse_region_segment(AVCodecContext *avctx,
int fill;
if (buf_size < 10)
return;
return AVERROR_INVALIDDATA;
region_id = *buf++;
@ -1172,7 +1172,7 @@ static void dvbsub_parse_region_segment(AVCodecContext *avctx,
if (!region) {
region = av_mallocz(sizeof(DVBSubRegion));
if (!region)
return;
return AVERROR(ENOMEM);
region->id = region_id;
region->version = -1;
@ -1265,9 +1265,11 @@ static void dvbsub_parse_region_segment(AVCodecContext *avctx,
display->object_list_next = object->display_list;
object->display_list = display;
}
return 0;
}
static void dvbsub_parse_page_segment(AVCodecContext *avctx,
static int dvbsub_parse_page_segment(AVCodecContext *avctx,
const uint8_t *buf, int buf_size, AVSubtitle *sub, int *got_output)
{
DVBSubContext *ctx = avctx->priv_data;
@ -1281,14 +1283,14 @@ static void dvbsub_parse_page_segment(AVCodecContext *avctx,
int version;
if (buf_size < 1)
return;
return AVERROR_INVALIDDATA;
timeout = *buf++;
version = ((*buf)>>4) & 15;
page_state = ((*buf++) >> 2) & 3;
if (ctx->version == version) {
return;
return 0;
}
ctx->time_out = timeout;
@ -1346,6 +1348,7 @@ static void dvbsub_parse_page_segment(AVCodecContext *avctx,
av_freep(&display);
}
return 0;
}
@ -1444,7 +1447,7 @@ static void save_display_set(DVBSubContext *ctx)
}
#endif
static void dvbsub_parse_display_definition_segment(AVCodecContext *avctx,
static int dvbsub_parse_display_definition_segment(AVCodecContext *avctx,
const uint8_t *buf,
int buf_size)
{
@ -1453,19 +1456,19 @@ static void dvbsub_parse_display_definition_segment(AVCodecContext *avctx,
int dds_version, info_byte;
if (buf_size < 5)
return;
return AVERROR_INVALIDDATA;
info_byte = bytestream_get_byte(&buf);
dds_version = info_byte >> 4;
if (display_def && display_def->version == dds_version)
return; // already have this display definition version
return 0; // already have this display definition version
if (!display_def) {
display_def = av_mallocz(sizeof(*display_def));
ctx->display_definition = display_def;
}
if (!display_def)
return;
return AVERROR(ENOMEM);
display_def->version = dds_version;
display_def->x = 0;
@ -1478,7 +1481,7 @@ static void dvbsub_parse_display_definition_segment(AVCodecContext *avctx,
}
if (buf_size < 13)
return;
return 0;
if (info_byte & 1<<3) { // display_window_flag
display_def->x = bytestream_get_be16(&buf);
@ -1486,6 +1489,8 @@ static void dvbsub_parse_display_definition_segment(AVCodecContext *avctx,
display_def->y = bytestream_get_be16(&buf);
display_def->height = bytestream_get_be16(&buf) - display_def->y + 1;
}
return 0;
}
static void dvbsub_display_end_segment(AVCodecContext *avctx, const uint8_t *buf,