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svq1enc: move scratch buffer from stack to context to ensure alignment

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Originally committed as revision 15931 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Måns Rullgård 2008-11-24 19:08:02 +00:00
parent 6b8810d0ca
commit 819e4dd9e6
1 changed files with 5 additions and 1 deletions
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6
libavcodec/svq1enc.c
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@ -67,6 +67,8 @@ typedef struct SVQ1Context {
int16_t (*motion_val16[3])[2]; int16_t (*motion_val16[3])[2];
int64_t rd_total; int64_t rd_total;
uint8_t *scratchbuf;
} SVQ1Context; } SVQ1Context;
static void svq1_write_header(SVQ1Context *s, int frame_type) static void svq1_write_header(SVQ1Context *s, int frame_type)
@ -378,7 +380,7 @@ static int svq1_encode_plane(SVQ1Context *s, int plane, unsigned char *src_plane
uint8_t *decoded= decoded_plane + offset; uint8_t *decoded= decoded_plane + offset;
uint8_t *ref= ref_plane + offset; uint8_t *ref= ref_plane + offset;
int score[4]={0,0,0,0}, best; int score[4]={0,0,0,0}, best;
uint8_t temp[16*stride]; uint8_t *temp = s->scratchbuf;
if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < 3000){ //FIXME check size if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < 3000){ //FIXME check size
av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n"); av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
@ -524,6 +526,7 @@ static int svq1_encode_frame(AVCodecContext *avctx, unsigned char *buf,
if(!s->current_picture.data[0]){ if(!s->current_picture.data[0]){
avctx->get_buffer(avctx, &s->current_picture); avctx->get_buffer(avctx, &s->current_picture);
avctx->get_buffer(avctx, &s->last_picture); avctx->get_buffer(avctx, &s->last_picture);
s->scratchbuf = av_malloc(s->current_picture.linesize[0] * 16);
} }
temp= s->current_picture; temp= s->current_picture;
@ -566,6 +569,7 @@ static av_cold int svq1_encode_end(AVCodecContext *avctx)
av_freep(&s->m.me.score_map); av_freep(&s->m.me.score_map);
av_freep(&s->mb_type); av_freep(&s->mb_type);
av_freep(&s->dummy); av_freep(&s->dummy);
av_freep(&s->scratchbuf);
for(i=0; i<3; i++){ for(i=0; i<3; i++){
av_freep(&s->motion_val8[i]); av_freep(&s->motion_val8[i]);