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Change tgq_decode_mb function arguments from using int8_t to uint8_t, this does 

not really change the code (x86_64/gcc-4.3.3 results stay unchanged) but avoids
several casts and an aliasing violation that broke decoding at least on
PPC64/gcc-4.1.2.

Originally committed as revision 18541 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Reimar Döffinger 2009-04-17 08:42:08 +00:00
parent a7c6e1171b
commit 8b5ec0875c
1 changed files with 3 additions and 3 deletions
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6
libavcodec/eatgq.c
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@ -140,13 +140,13 @@ static void tgq_idct_put_mb_dconly(TgqContext *s, int mb_x, int mb_y, const int8
} }
} }
static void tgq_decode_mb(TgqContext *s, int mb_y, int mb_x, const int8_t **bs, const int8_t *buf_end){ static void tgq_decode_mb(TgqContext *s, int mb_y, int mb_x, const uint8_t **bs, const uint8_t *buf_end){
int mode; int mode;
int i; int i;
int8_t dc[6]; int8_t dc[6];
DCTELEM block[6][64]; DCTELEM block[6][64];
mode = bytestream_get_byte((const uint8_t**)bs); mode = bytestream_get_byte(bs);
if (mode>buf_end-*bs) { if (mode>buf_end-*bs) {
av_log(s->avctx, AV_LOG_ERROR, "truncated macroblock\n"); av_log(s->avctx, AV_LOG_ERROR, "truncated macroblock\n");
return; return;
@ -228,7 +228,7 @@ static int tgq_decode_frame(AVCodecContext *avctx,
for (y=0; y<(avctx->height+15)/16; y++) for (y=0; y<(avctx->height+15)/16; y++)
for (x=0; x<(avctx->width+15)/16; x++) for (x=0; x<(avctx->width+15)/16; x++)
tgq_decode_mb(s, y, x, (const int8_t**)&buf, (const int8_t*)buf_end); tgq_decode_mb(s, y, x, &buf, buf_end);
*data_size = sizeof(AVFrame); *data_size = sizeof(AVFrame);
*(AVFrame*)data = s->frame; *(AVFrame*)data = s->frame;