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Add support for picture_ptr field in MJpegDecodeContext 

Signed-off-by: Anton Khirnov <anton@khirnov.net>
(cherry picked from commit e0e3b8b297)

Conflicts:

	libavcodec/jpeglsdec.c
	libavcodec/mjpegbdec.c
	libavcodec/mjpegdec.c

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
anatoly 2011-03-27 22:16:25 +02:00 committed by Michael Niedermayer
parent 9eac7c435f
commit 2fade10cb0
2 changed files with 17 additions and 17 deletions
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22
libavcodec/jpeglsdec.c
View File

@ -281,9 +281,9 @@ int ff_jpegls_decode_picture(MJpegDecodeContext *s, int near,
JLSState *state;
int off = 0, stride = 1, width, shift, ret = 0;
zero = av_mallocz(s->picture.linesize[0]);
zero = av_mallocz(s->picture_ptr->linesize[0]);
last = zero;
cur = s->picture.data[0];
cur = s->picture_ptr->data[0];
state = av_mallocz(sizeof(JLSState));
/* initialize JPEG-LS state from JPEG parameters */
@ -330,7 +330,7 @@ int ff_jpegls_decode_picture(MJpegDecodeContext *s, int near,
t = *((uint16_t *)last);
}
last = cur;
cur += s->picture.linesize[0];
cur += s->picture_ptr->linesize[0];
if (s->restart_interval && !--s->restart_count) {
align_get_bits(&s->gb);
@ -341,7 +341,7 @@ int ff_jpegls_decode_picture(MJpegDecodeContext *s, int near,
int j;
int Rc[3] = { 0, 0, 0 };
stride = (s->nb_components > 1) ? 3 : 1;
memset(cur, 0, s->picture.linesize[0]);
memset(cur, 0, s->picture_ptr->linesize[0]);
width = s->width * stride;
for (i = 0; i < s->height; i++) {
for (j = 0; j < stride; j++) {
@ -355,7 +355,7 @@ int ff_jpegls_decode_picture(MJpegDecodeContext *s, int near,
}
}
last = cur;
cur += s->picture.linesize[0];
cur += s->picture_ptr->linesize[0];
}
} else if (ilv == 2) { /* sample interleaving */
avpriv_report_missing_feature(s->avctx, "Sample interleaved images");
@ -369,7 +369,7 @@ int ff_jpegls_decode_picture(MJpegDecodeContext *s, int near,
w = s->width * s->nb_components;
if (s->bits <= 8) {
uint8_t *src = s->picture.data[0];
uint8_t *src = s->picture_ptr->data[0];
for (i = 0; i < s->height; i++) {
switch(s->xfrm) {
@ -404,7 +404,7 @@ int ff_jpegls_decode_picture(MJpegDecodeContext *s, int near,
}
break;
}
src += s->picture.linesize[0];
src += s->picture_ptr->linesize[0];
}
}else
avpriv_report_missing_feature(s->avctx, "16bit xfrm");
@ -416,20 +416,20 @@ int ff_jpegls_decode_picture(MJpegDecodeContext *s, int near,
w = s->width * s->nb_components;
if (s->bits <= 8) {
uint8_t *src = s->picture.data[0];
uint8_t *src = s->picture_ptr->data[0];
for (i = 0; i < s->height; i++) {
for (x = off; x < w; x += stride)
src[x] <<= shift;
src += s->picture.linesize[0];
src += s->picture_ptr->linesize[0];
}
} else {
uint16_t *src = (uint16_t *)s->picture.data[0];
uint16_t *src = (uint16_t *)s->picture_ptr->data[0];
for (i = 0; i < s->height; i++) {
for (x = 0; x < w; x++)
src[x] <<= shift;
src += s->picture.linesize[0] / 2;
src += s->picture_ptr->linesize[0] / 2;
}
}
}

12
libavcodec/mjpegdec.c
View File

@ -825,7 +825,7 @@ static int ljpeg_decode_rgb_scan(MJpegDecodeContext *s, int nb_components, int p
buffer[0][i] = 1 << (s->bits - 1);
for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
uint8_t *ptr = s->picture.data[0] + (linesize * mb_y);
uint8_t *ptr = s->picture_ptr->data[0] + (linesize * mb_y);
if (s->interlaced && s->bottom_field)
ptr += linesize >> 1;
@ -959,7 +959,7 @@ static int ljpeg_decode_yuv_scan(MJpegDecodeContext *s, int predictor,
if(dc == 0xFFFFF)
return -1;
if(bits<=8){
ptr = s->picture.data[c] + (linesize * (v * mb_y + y)) + (h * mb_x + x); //FIXME optimize this crap
ptr = s->picture_ptr->data[c] + (linesize * (v * mb_y + y)) + (h * mb_x + x); //FIXME optimize this crap
if(y==0 && toprow){
if(x==0 && leftcol){
pred= 1 << (bits - 1);
@ -979,7 +979,7 @@ static int ljpeg_decode_yuv_scan(MJpegDecodeContext *s, int predictor,
pred &= mask;
*ptr= pred + (dc << point_transform);
}else{
ptr16 = (uint16_t*)(s->picture.data[c] + 2*(linesize * (v * mb_y + y)) + 2*(h * mb_x + x)); //FIXME optimize this crap
ptr16 = (uint16_t*)(s->picture_ptr->data[c] + 2*(linesize * (v * mb_y + y)) + 2*(h * mb_x + x)); //FIXME optimize this crap
if(y==0 && toprow){
if(x==0 && leftcol){
pred= 1 << (bits - 1);
@ -1027,7 +1027,7 @@ static int ljpeg_decode_yuv_scan(MJpegDecodeContext *s, int predictor,
if(dc == 0xFFFFF)
return -1;
if(bits<=8){
ptr = s->picture.data[c] +
ptr = s->picture_ptr->data[c] +
(linesize * (v * mb_y + y)) +
(h * mb_x + x); //FIXME optimize this crap
PREDICT(pred, ptr[-linesize-1], ptr[-linesize], ptr[-1], predictor);
@ -1035,7 +1035,7 @@ static int ljpeg_decode_yuv_scan(MJpegDecodeContext *s, int predictor,
pred &= mask;
*ptr = pred + (dc << point_transform);
}else{
ptr16 = (uint16_t*)(s->picture.data[c] + 2*(linesize * (v * mb_y + y)) + 2*(h * mb_x + x)); //FIXME optimize this crap
ptr16 = (uint16_t*)(s->picture_ptr->data[c] + 2*(linesize * (v * mb_y + y)) + 2*(h * mb_x + x)); //FIXME optimize this crap
PREDICT(pred, ptr16[-linesize-1], ptr16[-linesize], ptr16[-1], predictor);
pred &= mask;
@ -1209,7 +1209,7 @@ static int mjpeg_decode_scan_progressive_ac(MJpegDecodeContext *s, int ss,
int mb_x, mb_y;
int EOBRUN = 0;
int c = s->comp_index[0];
uint8_t *data = s->picture.data[c];
uint8_t *data = s->picture_ptr->data[c];
int linesize = s->linesize[c];
int last_scan = 0;
int16_t *quant_matrix = s->quant_matrixes[s->quant_sindex[0]];