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vf_mirror: replace internal implementation with libavfilter 

Currently, libavfilter's equivalent vf_hflip is probably not faster or
anything, but there's still no reason to keep the internal code.
This commit is contained in:
wm4 2015-04-16 22:42:31 +02:00
parent baaa27d6db
commit e207c24b32
1 changed files with 4 additions and 85 deletions
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89
video/filter/vf_mirror.c
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@ -15,93 +15,14 @@
* with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include <stddef.h>
#include "config.h"
#include "common/msg.h"
#include "video/img_format.h"
#include "video/mp_image.h"
#include "vf.h"
#include "vf_lavfi.h"
static int config(struct vf_instance *vf, int width, int height,
int d_width, int d_height,
unsigned int flags, unsigned int fmt)
static int vf_open(vf_instance_t *vf)
{
struct mp_imgfmt_desc desc = mp_imgfmt_get_desc(fmt);
int a_w = MP_ALIGN_DOWN(width, desc.align_x);
vf_rescale_dsize(&d_width, &d_height, width, height, a_w, height);
return vf_next_config(vf, a_w, height, d_width, d_height, flags, fmt);
}
static inline void mirror_4_m(uint8_t *dst, uint8_t *src, int p,
int c0, int c1, int c2, int c3)
{
for (int x = 0; x < p; x++) {
dst[x * 4 + 0] = src[(p - x - 1) * 4 + c0];
dst[x * 4 + 1] = src[(p - x - 1) * 4 + c1];
dst[x * 4 + 2] = src[(p - x - 1) * 4 + c2];
dst[x * 4 + 3] = src[(p - x - 1) * 4 + c3];
}
}
static inline void mirror(uint8_t *dst, uint8_t *src, int bp, int w)
{
for (int x = 0; x < w; x++)
memcpy(dst + x * bp, src + (w - x - 1) * bp, bp);
}
static struct mp_image *filter(struct vf_instance *vf, struct mp_image *mpi)
{
mp_image_t *dmpi = vf_alloc_out_image(vf);
if (!dmpi)
return NULL;
mp_image_copy_attributes(dmpi, mpi);
for (int p = 0; p < mpi->num_planes; p++) {
int plane_h = mp_image_plane_h(mpi, p);
for (int y = 0; y < plane_h; y++) {
void *p_src = mpi->planes[p] + mpi->stride[p] * y;
void *p_dst = dmpi->planes[p] + dmpi->stride[p] * y;
int w = mp_image_plane_w(dmpi, p);
if (mpi->imgfmt == IMGFMT_YUYV) {
mirror_4_m(p_dst, p_src, w / 2, 2, 1, 0, 3);
} else if (mpi->imgfmt == IMGFMT_UYVY) {
mirror_4_m(p_dst, p_src, w / 2, 0, 3, 2, 1);
} else {
// make the compiler unroll the memcpy in mirror()
switch (mpi->fmt.bytes[p]) {
case 1: mirror(p_dst, p_src, 1, w); break;
case 2: mirror(p_dst, p_src, 2, w); break;
case 3: mirror(p_dst, p_src, 3, w); break;
case 4: mirror(p_dst, p_src, 4, w); break;
default:
mirror(p_dst, p_src, mpi->fmt.bytes[p], w);
}
}
}
}
talloc_free(mpi);
return dmpi;
}
static int query_format(struct vf_instance *vf, unsigned int fmt)
{
struct mp_imgfmt_desc desc = mp_imgfmt_get_desc(fmt);
if (!(desc.flags & MP_IMGFLAG_BYTE_ALIGNED))
return 0;
return vf_next_query_format(vf, fmt);
}
static int vf_open(vf_instance_t *vf){
vf->config=config;
vf->filter=filter;
vf->query_format=query_format;
return 1;
return vf_lw_set_graph(vf, NULL, NULL, "hflip") >= 0;
}
const vf_info_t vf_info_mirror = {
@ -109,5 +30,3 @@ const vf_info_t vf_info_mirror = {
.name = "mirror",
.open = vf_open,
};
//===========================================================================//