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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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57ce0321c8
Original commit message from CVS:
Added a tarkin encoder/decoder plugin.
I moved the tarking CVS code in here temporarily until they have a
library (hence this plugin is in ext)
test with:
./gst-launch filesrc location=/opt/data/shihad.mpg ! mpegdemux video_00! { queue ! mpeg2dec ! colorspace ! tarkinenc bitrate=3000 ! disksink location=out.ogg }
./gst-launch filesrc location=out.ogg ! tarkindec ! colorspace ! xvideosink
224 lines
6.3 KiB
C
224 lines
6.3 KiB
C
#include "yuv.h"
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/*#define TARKIN_YUV_EXACT*/
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/*#define TARKIN_YUV_LXY*/
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static inline
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uint8_t CLAMP(int16_t x)
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{
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return ((x > 255) ? 255 : (x < 0) ? 0 : x);
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}
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void rgb24_to_yuv (uint8_t *rgb, Wavelet3DBuf *yuv [], uint32_t frame)
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{
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int count = yuv[0]->width * yuv[0]->height;
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int16_t *y = yuv[0]->data + frame * count;
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int16_t *u = yuv[1]->data + frame * count;
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int16_t *v = yuv[2]->data + frame * count;
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int i;
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#if defined(TARKIN_YUV_EXACT)
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for (i=0; i<count; i++, rgb+=3) {
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y [i] = ((int16_t) 77 * rgb [0] + 150 * rgb [1] + 29 * rgb [2]) / 256;
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u [i] = ((int16_t) -44 * rgb [0] - 87 * rgb [1] + 131 * rgb [2]) / 256;
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v [i] = ((int16_t) 131 * rgb [0] - 110 * rgb [1] - 21 * rgb [2]) / 256;
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}
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#elif defined(TARKIN_YUV_LXY)
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for (i=0; i<count; i++, rgb+=3) {
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y [i] = ((int16_t) 54 * rgb [0] + 182 * rgb [1] + 18 * rgb [2]) / 256;
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u [i] = rgb [0] - y [i];
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v [i] = rgb [2] - y [i];
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}
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#else
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for (i=0; i<count; i++, rgb+=3) {
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v [i] = rgb [0] - rgb [1];
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u [i] = rgb [2] - rgb [1];
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y [i] = rgb [1] + (u [i] + v [i]) / 4;
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}
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#endif
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}
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void yuv_to_rgb24 (Wavelet3DBuf *yuv [], uint8_t *rgb, uint32_t frame)
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{
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int count = yuv[0]->width * yuv[0]->height;
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int16_t *y = yuv[0]->data + frame * count;
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int16_t *u = yuv[1]->data + frame * count;
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int16_t *v = yuv[2]->data + frame * count;
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int i;
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#if defined(TARKIN_YUV_EXACT)
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for (i=0; i<count; i++, rgb+=3) {
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rgb [0] = CLAMP(y [i] + 1.371 * v [i]);
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rgb [1] = CLAMP(y [i] - 0.698 * v [i] - 0.336 * u [i]);
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rgb [2] = CLAMP(y [i] + 1.732 * u [i]);
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}
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#elif defined(TARKIN_YUV_LXY)
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for (i=0; i<count; i++, rgb+=3) {
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rgb [1] = CLAMP(y [i] - (76 * u [i] - 26 * v [i]) / 256);
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rgb [0] = CLAMP(y [i] + u [i]);
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rgb [2] = CLAMP(y [i] + v [i]);
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}
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#else
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for (i=0; i<count; i++, rgb+=3) {
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rgb [1] = CLAMP(y [i] - (u [i] + v [i]) / 4);
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rgb [2] = CLAMP(u [i] + rgb [1]);
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rgb [0] = CLAMP(v [i] + rgb [1]);
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}
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#endif
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}
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void rgb32_to_yuv (uint8_t *rgb, Wavelet3DBuf *yuv [], uint32_t frame)
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{
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int count = yuv[0]->width * yuv[0]->height;
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int16_t *y = yuv[0]->data + frame * count;
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int16_t *u = yuv[1]->data + frame * count;
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int16_t *v = yuv[2]->data + frame * count;
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int i;
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#if defined(TARKIN_YUV_EXACT)
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for (i=0; i<count; i++, rgb+=4) {
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y [i] = ((int16_t) 77 * rgb [0] + 150 * rgb [1] + 29 * rgb [2]) / 256;
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u [i] = ((int16_t) -44 * rgb [0] - 87 * rgb [1] + 131 * rgb [2]) / 256;
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v [i] = ((int16_t) 131 * rgb [0] - 110 * rgb [1] - 21 * rgb [2]) / 256;
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}
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#elif defined(TARKIN_YUV_LXY)
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for (i=0; i<count; i++, rgb+=4) {
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y [i] = ((int16_t) 54 * rgb [0] + 182 * rgb [1] + 18 * rgb [2]) / 256;
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u [i] = rgb [0] - y [i];
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v [i] = rgb [2] - y [i];
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}
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#else
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for (i=0; i<count; i++, rgb+=4) {
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v [i] = rgb [0] - rgb [1];
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u [i] = rgb [2] - rgb [1];
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y [i] = rgb [1] + (u [i] + v [i]) / 4;
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}
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#endif
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}
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void yuv_to_rgb32 (Wavelet3DBuf *yuv [], uint8_t *rgb, uint32_t frame)
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{
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int count = yuv[0]->width * yuv[0]->height;
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int16_t *y = yuv[0]->data + frame * count;
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int16_t *u = yuv[1]->data + frame * count;
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int16_t *v = yuv[2]->data + frame * count;
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int i;
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#if defined(TARKIN_YUV_EXACT)
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for (i=0; i<count; i++, rgb+=4) {
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rgb [0] = CLAMP(y [i] + 1.371 * v [i]);
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rgb [1] = CLAMP(y [i] - 0.698 * v [i] - 0.336 * u [i]);
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rgb [2] = CLAMP(y [i] + 1.732 * u [i]);
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}
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#elif defined(TARKIN_YUV_LXY)
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for (i=0; i<count; i++, rgb+=4) {
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rgb [1] = CLAMP(y [i] - (76 * u [i] - 26 * v [i]) / 256);
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rgb [0] = CLAMP(y [i] + u [i]);
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rgb [2] = CLAMP(y [i] + v [i]);
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}
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#else
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for (i=0; i<count; i++, rgb+=4) {
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rgb [1] = CLAMP(y [i] - (u [i] + v [i]) / 4);
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rgb [2] = CLAMP(u [i] + rgb [1]);
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rgb [0] = CLAMP(v [i] + rgb [1]);
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}
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#endif
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}
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void rgba_to_yuv (uint8_t *rgba, Wavelet3DBuf *yuva [], uint32_t frame)
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{
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int count = yuva[0]->width * yuva[0]->height;
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int16_t *y = yuva[0]->data + frame * count;
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int16_t *u = yuva[1]->data + frame * count;
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int16_t *v = yuva[2]->data + frame * count;
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int16_t *a = yuva[3]->data + frame * count;
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int i;
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#if defined(TARKIN_YUV_EXACT)
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for (i=0; i<count; i++, rgba+=4) {
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y [i] = ((int16_t) 77 * rgba [0] + 150 * rgba [1] + 29 * rgba [2]) / 256;
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u [i] = ((int16_t) -44 * rgba [0] - 87 * rgba [1] + 131 * rgba [2]) / 256;
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v [i] = ((int16_t) 131 * rgba [0] - 110 * rgba [1] - 21 * rgba [2]) / 256;
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a [i] = rgba [3];
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}
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#elif defined(TARKIN_YUV_LXY)
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for (i=0; i<count; i++, rgba+=4) {
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y [i] = ((int16_t) 54 * rgba [0] + 182 * rgba [1] + 18 * rgba [2]) / 256;
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u [i] = rgba [0] - y [i];
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v [i] = rgba [2] - y [i];
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a [i] = rgba [3];
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}
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#else
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for (i=0; i<count; i++, rgba+=4) {
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v [i] = rgba [0] - rgba [1];
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u [i] = rgba [2] - rgba [1];
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y [i] = rgba [1] + (u [i] + v [i]) / 4;
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a [i] = rgba [3];
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}
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#endif
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}
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void yuv_to_rgba (Wavelet3DBuf *yuva [], uint8_t *rgba, uint32_t frame)
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{
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int count = yuva[0]->width * yuva[0]->height;
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int16_t *y = yuva[0]->data + frame * count;
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int16_t *u = yuva[1]->data + frame * count;
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int16_t *v = yuva[2]->data + frame * count;
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int16_t *a = yuva[3]->data + frame * count;
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int i;
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#if defined(TARKIN_YUV_EXACT)
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for (i=0; i<count; i++, rgba+=4) {
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rgba [0] = CLAMP(y [i] + 1.371 * v [i]);
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rgba [1] = CLAMP(y [i] - 0.698 * v [i] - 0.336 * u [i]);
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rgba [2] = CLAMP(y [i] + 1.732 * u [i]);
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rgba [3] = a [i];
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}
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#elif defined(TARKIN_YUV_LXY)
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for (i=0; i<count; i++, rgba+=4) {
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rgba [1] = CLAMP(y [i] - (76 * u [i] - 26 * v [i]) / 256);
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rgba [0] = CLAMP(y [i] + u [i]);
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rgba [2] = CLAMP(y [i] + v [i]);
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rgba [3] = a [i];
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}
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#else
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for (i=0; i<count; i++, rgba+=4) {
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rgba [1] = CLAMP(y [i] - (u [i] + v [i]) / 4);
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rgba [2] = CLAMP(u [i] + rgba [1]);
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rgba [0] = CLAMP(v [i] + rgba [1]);
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rgba [3] = a [i];
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}
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#endif
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}
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void grayscale_to_y (uint8_t *rgba, Wavelet3DBuf *y [], uint32_t frame)
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{
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int count = y[0]->width * y[0]->height;
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int16_t *_y = y[0]->data + frame * count;
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int i;
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for (i=0; i<count; i++)
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_y [i] = rgba [i];
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}
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void y_to_grayscale (Wavelet3DBuf *y [], uint8_t *rgba, uint32_t frame)
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{
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int count = y[0]->width * y[0]->height;
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int16_t *_y = y[0]->data + frame * count;
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int i;
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for (i=0; i<count; i++)
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rgba [i] = CLAMP(_y[i]);
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}
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