mirror of https://github.com/mpv-player/mpv
155 lines
3.2 KiB
C
155 lines
3.2 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <inttypes.h>
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#include "../config.h"
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#include "../mp_msg.h"
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#include "img_format.h"
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#include "mp_image.h"
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#include "vf.h"
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#include "../libvo/video_out.h"
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#include "../libvo/fastmemcpy.h"
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#include "../postproc/rgb2rgb.h"
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struct vf_priv_s {
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unsigned char *buf;
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int brightness;
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int contrast;
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};
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static void process(unsigned char *dest, int dstride, unsigned char *src, int sstride,
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int w, int h, int brightness, int contrast)
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{
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int i;
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int pel;
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int dstep = dstride-w;
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int sstep = sstride-w;
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brightness = ((brightness+100)*511)/200-128;
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contrast = ((contrast+100)*512)/200;
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while (h--) {
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for (i = w; i; i--)
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{
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/* slow */
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pel = ((*src++ - 128) * contrast)/256 + brightness;
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*dest++ = pel > 255 ? 255 : (pel < 0 ? 0 : pel);
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}
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src += sstep;
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dest += dstep;
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}
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}
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/* FIXME: add packed yuv version of process, and optimized code! */
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static void put_image(struct vf_instance_s* vf, mp_image_t *mpi)
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{
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mp_image_t *dmpi;
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dmpi=vf_get_image(vf->next, mpi->imgfmt,
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MP_IMGTYPE_EXPORT, 0,
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mpi->w, mpi->h);
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dmpi->stride[0] = mpi->stride[0];
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dmpi->planes[1] = mpi->planes[1];
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dmpi->planes[2] = mpi->planes[2];
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dmpi->stride[1] = mpi->stride[1];
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dmpi->stride[2] = mpi->stride[2];
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if (!vf->priv->buf) vf->priv->buf = malloc(mpi->stride[0]*mpi->h);
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if ((vf->priv->brightness == 0) && (vf->priv->contrast == 0))
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dmpi->planes[0] = mpi->planes[0];
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else {
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dmpi->planes[0] = vf->priv->buf;
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process(dmpi->planes[0], dmpi->stride[0],
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mpi->planes[0], mpi->stride[0],
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mpi->w, mpi->h, vf->priv->brightness,
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vf->priv->contrast);
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}
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vf_next_put_image(vf,dmpi);
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}
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static int control(struct vf_instance_s* vf, int request, void* data)
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{
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vf_equalizer_t *eq;
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switch (request) {
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case VFCTRL_SET_EQUALIZER:
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eq = data;
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if (!strcmp(eq->item,"brightness")) {
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vf->priv->brightness = eq->value;
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return CONTROL_TRUE;
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}
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else if (!strcmp(eq->item,"contrast")) {
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vf->priv->contrast = eq->value;
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return CONTROL_TRUE;
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}
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break;
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case VFCTRL_GET_EQUALIZER:
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eq = data;
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if (!strcmp(eq->item,"brightness")) {
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eq->value = vf->priv->brightness;
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return CONTROL_TRUE;
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}
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else if (!strcmp(eq->item,"contrast")) {
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eq->value = vf->priv->contrast;
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return CONTROL_TRUE;
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}
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break;
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}
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return vf_next_control(vf, request, data);
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}
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static int query_format(struct vf_instance_s* vf, unsigned int fmt)
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{
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switch (fmt) {
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case IMGFMT_YVU9:
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case IMGFMT_IF09:
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case IMGFMT_YV12:
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case IMGFMT_I420:
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case IMGFMT_IYUV:
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case IMGFMT_CLPL:
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case IMGFMT_Y800:
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case IMGFMT_Y8:
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case IMGFMT_NV12:
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case IMGFMT_444P:
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case IMGFMT_422P:
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case IMGFMT_411P:
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return vf_next_query_format(vf, fmt);
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}
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return 0;
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}
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static void uninit(struct vf_instance_s* vf)
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{
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if (vf->priv->buf) free(vf->priv->buf);
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free(vf->priv);
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}
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static int open(vf_instance_t *vf, char* args)
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{
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vf->control=control;
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vf->query_format=query_format;
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vf->put_image=put_image;
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vf->uninit=uninit;
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vf->priv = malloc(sizeof(struct vf_priv_s));
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memset(vf->priv, 0, sizeof(struct vf_priv_s));
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if (args) sscanf(args, "%d:%d", &vf->priv->brightness, &vf->priv->contrast);
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return 1;
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}
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vf_info_t vf_info_eq = {
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"soft video equalizer",
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"eq",
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"Richard Felker",
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"",
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open
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};
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