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Code Issues Releases Activity

Add support for picture_ptr field in MJpegDecodeContext

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Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
anatoly 2011-03-27 22:16:25 +02:00 committed by Anton Khirnov
parent f16055eedf
commit e0e3b8b297
4 changed files with 30 additions and 27 deletions
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18
libavcodec/jpeglsdec.c
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@ -262,9 +262,9 @@ int ff_jpegls_decode_picture(MJpegDecodeContext *s, int near, int point_transfor
JLSState *state;
int off = 0, stride = 1, width, shift;
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 */
@ -299,7 +299,7 @@ int ff_jpegls_decode_picture(MJpegDecodeContext *s, int near, int point_transfor
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);
@ -309,7 +309,7 @@ int ff_jpegls_decode_picture(MJpegDecodeContext *s, int near, int point_transfor
} else if(ilv == 1) { /* line interleaving */
int j;
int Rc[3] = {0, 0, 0};
memset(cur, 0, s->picture.linesize[0]);
memset(cur, 0, s->picture_ptr->linesize[0]);
width = s->width * 3;
for(i = 0; i < s->height; i++) {
for(j = 0; j < 3; j++) {
@ -322,7 +322,7 @@ int ff_jpegls_decode_picture(MJpegDecodeContext *s, int near, int point_transfor
}
}
last = cur;
cur += s->picture.linesize[0];
cur += s->picture_ptr->linesize[0];
}
} else if(ilv == 2) { /* sample interleaving */
av_log(s->avctx, AV_LOG_ERROR, "Sample interleaved images are not supported.\n");
@ -337,22 +337,22 @@ int ff_jpegls_decode_picture(MJpegDecodeContext *s, int near, int point_transfor
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;
}
}
}

2
libavcodec/mjpegbdec.c
View File

@ -129,7 +129,7 @@ read_header:
//XXX FIXME factorize, this looks very similar to the EOI code
*picture= s->picture;
*picture= *s->picture_ptr;
*data_size = sizeof(AVFrame);
if(!s->lossless){

36
libavcodec/mjpegdec.c
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@ -81,6 +81,9 @@ av_cold int ff_mjpeg_decode_init(AVCodecContext *avctx)
{
MJpegDecodeContext *s = avctx->priv_data;
if (!s->picture_ptr)
s->picture_ptr = &s->picture;
s->avctx = avctx;
dsputil_init(&s->dsp, avctx);
ff_init_scantable(s->dsp.idct_permutation, &s->scantable, ff_zigzag_direct);
@ -282,8 +285,8 @@ int ff_mjpeg_decode_sof(MJpegDecodeContext *s)
s->height < ((s->org_height * 3) / 4)) {
s->interlaced = 1;
s->bottom_field = s->interlace_polarity;
s->picture.interlaced_frame = 1;
s->picture.top_field_first = !s->interlace_polarity;
s->picture_ptr->interlaced_frame = 1;
s->picture_ptr->top_field_first = !s->interlace_polarity;
height *= 2;
}
@ -342,20 +345,19 @@ int ff_mjpeg_decode_sof(MJpegDecodeContext *s)
s->avctx->pix_fmt = PIX_FMT_GRAY16;
}
if(s->picture.data[0])
s->avctx->release_buffer(s->avctx, &s->picture);
if(s->picture_ptr->data[0])
s->avctx->release_buffer(s->avctx, s->picture_ptr);
s->picture.reference= 0;
if(s->avctx->get_buffer(s->avctx, &s->picture) < 0){
if(s->avctx->get_buffer(s->avctx, s->picture_ptr) < 0){
av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return -1;
}
s->picture.pict_type= FF_I_TYPE;
s->picture.key_frame= 1;
s->picture_ptr->pict_type= FF_I_TYPE;
s->picture_ptr->key_frame= 1;
s->got_picture = 1;
for(i=0; i<3; i++){
s->linesize[i]= s->picture.linesize[i] << s->interlaced;
s->linesize[i]= s->picture_ptr->linesize[i] << s->interlaced;
}
// printf("%d %d %d %d %d %d\n", s->width, s->height, s->linesize[0], s->linesize[1], s->interlaced, s->avctx->height);
@ -635,7 +637,7 @@ static int ljpeg_decode_rgb_scan(MJpegDecodeContext *s, int predictor, int point
}
for(mb_y = 0; mb_y < s->mb_height; mb_y++) {
const int modified_predictor= mb_y ? predictor : 1;
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;
@ -712,7 +714,7 @@ static int ljpeg_decode_yuv_scan(MJpegDecodeContext *s, int predictor, int point
for(j=0; j<n; j++) {
int pred;
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 && mb_y==0){
if(x==0 && mb_x==0){
pred= 128 << point_transform;
@ -752,7 +754,7 @@ static int ljpeg_decode_yuv_scan(MJpegDecodeContext *s, int predictor, int point
for(j=0; j<n; j++) {
int pred;
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
PREDICT(pred, ptr[-linesize-1], ptr[-linesize], ptr[-1], predictor);
*ptr= pred + (mjpeg_decode_dc(s, s->dc_index[i]) << point_transform);
if (++x == h) {
@ -804,7 +806,7 @@ static int mjpeg_decode_scan(MJpegDecodeContext *s, int nb_components, int Ah, i
}
for(i=0; i < nb_components; i++) {
int c = s->comp_index[i];
data[c] = s->picture.data[c];
data[c] = s->picture_ptr->data[c];
reference_data[c] = reference ? reference->data[c] : NULL;
linesize[c]=s->linesize[c];
s->coefs_finished[c] |= 1;
@ -889,7 +891,7 @@ static int mjpeg_decode_scan_progressive_ac(MJpegDecodeContext *s, int ss, int s
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];
const uint8_t *reference_data = reference ? reference->data[c] : NULL;
int linesize = s->linesize[c];
int last_scan = 0;
@ -1521,7 +1523,7 @@ eoi_parser:
if (s->bottom_field == !s->interlace_polarity)
goto not_the_end;
}
*picture = s->picture;
*picture = *s->picture_ptr;
*data_size = sizeof(AVFrame);
if(!s->lossless){
@ -1593,8 +1595,8 @@ av_cold int ff_mjpeg_decode_end(AVCodecContext *avctx)
MJpegDecodeContext *s = avctx->priv_data;
int i, j;
if (s->picture.data[0])
avctx->release_buffer(avctx, &s->picture);
if (s->picture_ptr && s->picture_ptr->data[0])
avctx->release_buffer(avctx, s->picture_ptr);
av_free(s->buffer);
av_free(s->qscale_table);

1
libavcodec/mjpegdec.h
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@ -81,6 +81,7 @@ typedef struct MJpegDecodeContext {
int quant_index[4]; /* quant table index for each component */
int last_dc[MAX_COMPONENTS]; /* last DEQUANTIZED dc (XXX: am I right to do that ?) */
AVFrame picture; /* picture structure */
AVFrame *picture_ptr; /* pointer to picture structure */
int got_picture; ///< we found a SOF and picture is valid, too.
int linesize[MAX_COMPONENTS]; ///< linesize << interlaced
int8_t *qscale_table;