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picture buffer cleanup, this fixes a assertion failure (if assertion checking was manualy enabled for utils.c) and a memleak at least 

Originally committed as revision 2392 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2003-10-16 00:21:54 +00:00
parent f0bbfc4a20
commit 6571e41dcd
3 changed files with 19 additions and 22 deletions
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36
libavcodec/mpegvideo.c
View File

@ -239,6 +239,11 @@ int DCT_common_init(MpegEncContext *s)
return 0;
}
static void copy_picture(Picture *dst, Picture *src){
*dst = *src;
dst->type= FF_BUFFER_TYPE_COPY;
}
/**
* allocates a Picture
* The pixels are allocated/set by calling get_buffer() if shared=0
@ -1047,7 +1052,7 @@ alloc:
// s->current_picture_ptr->quality= s->new_picture_ptr->quality;
s->current_picture_ptr->key_frame= s->pict_type == I_TYPE;
s->current_picture= *s->current_picture_ptr;
copy_picture(&s->current_picture, s->current_picture_ptr);
if(s->out_format != FMT_H264 || s->codec_id == CODEC_ID_SVQ3){
if (s->pict_type != B_TYPE) {
@ -1055,11 +1060,10 @@ alloc:
s->next_picture_ptr= s->current_picture_ptr;
}
if(s->last_picture_ptr) s->last_picture= *s->last_picture_ptr;
if(s->next_picture_ptr) s->next_picture= *s->next_picture_ptr;
if(s->new_picture_ptr ) s->new_picture = *s->new_picture_ptr;
if(s->last_picture_ptr) copy_picture(&s->last_picture, s->last_picture_ptr);
if(s->next_picture_ptr) copy_picture(&s->next_picture, s->next_picture_ptr);
if(s->pict_type != I_TYPE && s->last_picture_ptr==NULL){
if(s->pict_type != I_TYPE && (s->last_picture_ptr==NULL || s->last_picture_ptr->data[0]==NULL)){
fprintf(stderr, "warning: first frame is no keyframe\n");
assert(s->pict_type != B_TYPE); //these should have been dropped if we dont have a reference
goto alloc;
@ -1399,22 +1403,17 @@ static int load_input_picture(MpegEncContext *s, AVFrame *pic_arg){
}
alloc_picture(s, (Picture*)pic, 1);
}else{
int offset= 16;
i= find_unused_picture(s, 0);
pic= (AVFrame*)&s->picture[i];
pic->reference= 3;
alloc_picture(s, (Picture*)pic, 0);
for(i=0; i<4; i++){
/* the input will be 16 pixels to the right relative to the actual buffer start
* and the current_pic, so the buffer can be reused, yes its not beatifull
*/
pic->data[i]+= 16;
}
if( pic->data[0] == pic_arg->data[0]
&& pic->data[1] == pic_arg->data[1]
&& pic->data[2] == pic_arg->data[2]){
if( pic->data[0] + offset == pic_arg->data[0]
&& pic->data[1] + offset == pic_arg->data[1]
&& pic->data[2] + offset == pic_arg->data[2]){
// empty
}else{
int h_chroma_shift, v_chroma_shift;
@ -1428,7 +1427,7 @@ static int load_input_picture(MpegEncContext *s, AVFrame *pic_arg){
int w= s->width >>h_shift;
int h= s->height>>v_shift;
uint8_t *src= pic_arg->data[i];
uint8_t *dst= pic->data[i];
uint8_t *dst= pic->data[i] + offset;
if(src_stride==dst_stride)
memcpy(dst, src, src_stride*h);
@ -1550,7 +1549,7 @@ static void select_input_picture(MpegEncContext *s){
if(s->reordered_input_picture[0]){
s->reordered_input_picture[0]->reference= s->reordered_input_picture[0]->pict_type!=B_TYPE ? 3 : 0;
s->new_picture= *s->reordered_input_picture[0];
copy_picture(&s->new_picture, s->reordered_input_picture[0]);
if(s->reordered_input_picture[0]->type == FF_BUFFER_TYPE_SHARED){
// input is a shared pix, so we cant modifiy it -> alloc a new one & ensure that the shared one is reuseable
@ -1581,11 +1580,10 @@ static void select_input_picture(MpegEncContext *s){
s->current_picture_ptr= s->reordered_input_picture[0];
for(i=0; i<4; i++){
//reverse the +16 we did before storing the input
s->current_picture_ptr->data[i]-=16;
s->new_picture.data[i]+=16;
}
}
s->current_picture= *s->current_picture_ptr;
copy_picture(&s->current_picture, s->current_picture_ptr);
s->picture_number= s->new_picture.display_picture_number;
//printf("dpn:%d\n", s->picture_number);

1
libavcodec/mpegvideo.h
View File

@ -331,7 +331,6 @@ typedef struct MpegEncContext {
Picture *last_picture_ptr; ///< pointer to the previous picture.
Picture *next_picture_ptr; ///< pointer to the next picture (for bidir pred)
Picture *new_picture_ptr; ///< pointer to the source picture for encoding
Picture *current_picture_ptr; ///< pointer to the current picture
int last_dc[3]; ///< last DC values for MPEG1
int16_t *dc_val[3]; ///< used for mpeg4 DC prediction, all 3 arrays must be continuous

4
tests/rotozoom.regression.ref
View File

@ -29,8 +29,8 @@ stddev: 5.28 bytes:7602176
242a7a18c2793e115007bc163861ef4e *./data/a-huffyuv.avi
dde5895817ad9d219f79a52d0bdfb001 *./data/out.yuv
stddev: 0.00 bytes:7602176
910c4f83e031bfb0024380d674d79091 *./data/a-mpeg4-rc.avi
ec7bb694f4eaca71ec7b106d4fe20092 *./data/out.yuv
f149deded058e0ebb778001922d869ac *./data/a-mpeg4-rc.avi
6f36eb7cbe1e5e91229f7356c2c88c0a *./data/out.yuv
stddev: 4.20 bytes:7145472
bb11d9808375911ea63d4f0889306037 *./data/a-mpeg4-adv.avi
e465df12f2c8a6492a6ec0b1bddc1d0d *./data/out.yuv