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DR and slice support 

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@16451 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
henry 2005-09-11 10:52:24 +00:00
parent 5cb2b636a5
commit d33c27aa64
1 changed files with 99 additions and 21 deletions
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120
libmpcodecs/vf_screenshot.c
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@ -25,8 +25,9 @@
struct vf_priv_s {
int frameno;
int shot;
int dw, dh;
char fname[102];
int shot, store_slices;
int dw, dh, stride;
uint8_t *buffer;
struct SwsContext *ctx;
mp_image_t *dmpi;
@ -49,6 +50,7 @@ static int config(struct vf_instance_s* vf,
vf->priv->dw = d_width;
vf->priv->dh = d_height;
vf->priv->stride = (3*vf->priv->dw+15)&~15;
if (vf->priv->buffer) free(vf->priv->buffer); // probably reconfigured
vf->priv->dmpi = NULL;
@ -92,7 +94,7 @@ static int write_png(char *fname, unsigned char *buffer, int width, int height,
png_set_bgr(png_ptr);
row_pointers = (png_byte**)malloc(height*sizeof(png_byte*));
for ( k = 0; k <height; k++ ){
for (k = 0; k < height; k++) {
unsigned char* s=buffer + stride*k;
row_pointers[k] = s;
}
@ -113,22 +115,23 @@ static int fexists(char *fname)
else return 0;
}
static void shot(struct vf_priv_s* priv)
static void gen_fname(struct vf_priv_s* priv)
{
do {
snprintf (priv->fname, 100, "shot%04d.png", ++priv->frameno);
} while (fexists(priv->fname) && priv->frameno < 100000);
if (fexists(priv->fname)) return;
mp_msg(MSGT_VFILTER,MSGL_INFO,"*** screenshot '%s' ***\n",priv->fname);
}
static void scale_image(struct vf_priv_s* priv)
{
char fname[102];
uint8_t *dst[3];
int dst_stride[3];
priv->shot=0;
do {
snprintf (fname, 100, "shot%04d.png", ++priv->frameno);
} while (fexists(fname) && priv->frameno < 100000);
if (fexists(fname)) return;
mp_msg(MSGT_VFILTER,MSGL_INFO,"*** screenshot '%s' ***\n",fname);
dst_stride[0] = (3*priv->dw+15)&~15;
dst_stride[0] = priv->stride;
dst_stride[1] = dst_stride[2] = 0;
if (!priv->buffer)
priv->buffer = (uint8_t*)memalign(16, dst_stride[0]*priv->dh);
@ -136,16 +139,84 @@ static void shot(struct vf_priv_s* priv)
dst[0] = priv->buffer;
dst[1] = dst[2] = 0;
sws_scale_ordered(priv->ctx, priv->dmpi->planes, priv->dmpi->stride, 0, priv->dmpi->height, dst, dst_stride);
}
write_png(fname, priv->buffer, priv->dw, priv->dh, dst_stride[0]);
static void start_slice(struct vf_instance_s* vf, mp_image_t *mpi){
if(!vf->next->draw_slice) {
mpi->flags&=~MP_IMGFLAG_DRAW_CALLBACK;
return;
}
if(!(mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)) return; // shouldn't happen
mpi->priv=vf->dmpi=vf_get_image(vf->next,mpi->imgfmt,
mpi->type, mpi->flags, mpi->width, mpi->height);
if (vf->priv->shot) {
vf->priv->store_slices = 1;
vf->priv->shot = 0;
if (!vf->priv->buffer)
vf->priv->buffer = (uint8_t*)memalign(16, vf->priv->stride*vf->priv->dh);
}
}
static void draw_slice(struct vf_instance_s* vf,
unsigned char** src, int* stride, int w,int h, int x, int y){
mp_image_t *dmpi=vf->dmpi;
if(!dmpi){
mp_msg(MSGT_VFILTER,MSGL_FATAL,"vf_screenshot: draw_slice() called with dmpi=NULL (no get_image??)\n");
return;
}
if (vf->priv->store_slices) {
uint8_t *dst[3];
int dst_stride[3];
dst_stride[0] = vf->priv->stride;
dst_stride[1] = dst_stride[2] = 0;
dst[0] = vf->priv->buffer;
dst[1] = dst[2] = 0;
sws_scale_ordered(vf->priv->ctx, src, stride, y, h, dst, dst_stride);
}
vf_next_draw_slice(vf,src,stride,w,h,x,y);
}
static void get_image(struct vf_instance_s* vf, mp_image_t *mpi){
vf->dmpi= vf_get_image(vf->next, mpi->imgfmt,
mpi->type, mpi->flags, mpi->width, mpi->height);
mpi->planes[0]=vf->dmpi->planes[0];
mpi->stride[0]=vf->dmpi->stride[0];
if(mpi->flags&MP_IMGFLAG_PLANAR){
mpi->planes[1]=vf->dmpi->planes[1];
mpi->planes[2]=vf->dmpi->planes[2];
mpi->stride[1]=vf->dmpi->stride[1];
mpi->stride[2]=vf->dmpi->stride[2];
}
mpi->width=vf->dmpi->width;
mpi->flags|=MP_IMGFLAG_DIRECT;
mpi->flags&=~MP_IMGFLAG_DRAW_CALLBACK;
mpi->priv=(void*)vf->dmpi;
}
static int put_image(struct vf_instance_s* vf, mp_image_t *mpi)
{
vf->priv->dmpi=vf_get_image(vf->next,mpi->imgfmt,
MP_IMGTYPE_EXPORT, 0,
mpi->w, mpi->h);
if (mpi->flags&MP_IMGFLAG_DRAW_CALLBACK) {
if(vf->priv->store_slices) {
vf->priv->store_slices = 0;
gen_fname(vf->priv);
write_png(vf->priv->fname, vf->priv->buffer, vf->priv->dw, vf->priv->dh, vf->priv->stride);
}
return vf_next_put_image(vf,vf->dmpi);
}
if(!(mpi->flags&MP_IMGFLAG_DIRECT)){
vf->priv->dmpi=vf_get_image(vf->next,mpi->imgfmt,
MP_IMGTYPE_EXPORT, 0,
mpi->width, mpi->height);
vf_clone_mpi_attributes(vf->priv->dmpi, mpi);
} else {
vf->priv->dmpi=vf->dmpi;
}
vf->priv->dmpi->planes[0]=mpi->planes[0];
vf->priv->dmpi->planes[1]=mpi->planes[1];
vf->priv->dmpi->planes[2]=mpi->planes[2];
@ -156,7 +227,10 @@ static int put_image(struct vf_instance_s* vf, mp_image_t *mpi)
vf->priv->dmpi->height=mpi->height;
if(vf->priv->shot) {
shot(vf->priv);
vf->priv->shot=0;
gen_fname(vf->priv);
scale_image(vf->priv);
write_png(vf->priv->fname, vf->priv->buffer, vf->priv->dw, vf->priv->dh, vf->priv->stride);
}
return vf_next_put_image(vf, vf->priv->dmpi);
@ -206,9 +280,13 @@ static int open(vf_instance_t *vf, char* args)
vf->control=control;
vf->put_image=put_image;
vf->query_format=query_format;
vf->start_slice=start_slice;
vf->draw_slice=draw_slice;
vf->get_image=get_image;
vf->priv=malloc(sizeof(struct vf_priv_s));
vf->priv->frameno=0;
vf->priv->shot=0;
vf->priv->store_slices=0;
vf->priv->buffer=0;
vf->priv->ctx=0;
return 1;