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mp_image: add helper for copying image attributes

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This enw function is similar to mp_image_set_params(), but doesn't force
setting "hard" parameters like image size and format.
This commit is contained in:
wm4 2013-11-03 23:55:16 +01:00
parent 3b5f8ea571
commit 6f17410f88
2 changed files with 25 additions and 0 deletions
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22
video/mp_image.c
View File

@ -36,6 +36,8 @@
#include "memcpy_pic.h"
#include "fmt-conversion.h"
#include "video/filter/vf.h"
#if HAVE_PTHREADS
#include <pthread.h>
static pthread_mutex_t refcount_mutex = PTHREAD_MUTEX_INITIALIZER;
@ -468,6 +470,26 @@ void mp_image_set_params(struct mp_image *image,
image->chroma_location = params->chroma_location;
}
// Set most image parameters, but not image format or size.
// Display size is used to set the PAR.
void mp_image_set_attributes(struct mp_image *image,
const struct mp_image_params *params)
{
struct mp_image_params nparams = *params;
nparams.imgfmt = image->imgfmt;
nparams.w = image->w;
nparams.h = image->h;
if (nparams.imgfmt != params->imgfmt)
mp_image_params_guess_csp(&nparams);
if (nparams.w != params->w || nparams.h != params->h) {
if (nparams.d_w && nparams.d_h) {
vf_rescale_dsize(&nparams.d_w, &nparams.d_h,
params->w, params->h, nparams.w, nparams.h);
}
}
mp_image_set_params(image, &nparams);
}
void mp_image_set_colorspace_details(struct mp_image *image,
struct mp_csp_details *csp)
{

3
video/mp_image.h
View File

@ -153,6 +153,9 @@ void mp_image_params_from_image(struct mp_image_params *params,
void mp_image_set_params(struct mp_image *image,
const struct mp_image_params *params);
void mp_image_set_attributes(struct mp_image *image,
const struct mp_image_params *params);
struct AVFrame;
void mp_image_copy_fields_from_av_frame(struct mp_image *dst,
struct AVFrame *src);