avfilter/vf_colormatrix: add yuv444p support

Signed-off-by: Paul B Mahol <onemda@gmail.com>

libavfilter/vf_colormatrix.c

@@ -230,6 +230,53 @@ static int process_slice_uyvy422(AVFilterContext *ctx, void *arg, int jobnr, int
     return 0;
 }
 
+static int process_slice_yuv444p(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
+{
+    const ThreadData *td = arg;
+    const AVFrame *src = td->src;
+    AVFrame *dst = td->dst;
+    const int height = src->height;
+    const int width = src->width;
+    const int slice_start = (height *  jobnr   ) / nb_jobs;
+    const int slice_end   = (height * (jobnr+1)) / nb_jobs;
+    const int src_pitchY  = src->linesize[0];
+    const int src_pitchUV = src->linesize[1];
+    const unsigned char *srcpU = src->data[1] + slice_start * src_pitchUV;
+    const unsigned char *srcpV = src->data[2] + slice_start * src_pitchUV;
+    const unsigned char *srcpY = src->data[0] + slice_start * src_pitchY;
+    const int dst_pitchY  = dst->linesize[0];
+    const int dst_pitchUV = dst->linesize[1];
+    unsigned char *dstpU = dst->data[1] + slice_start * dst_pitchUV;
+    unsigned char *dstpV = dst->data[2] + slice_start * dst_pitchUV;
+    unsigned char *dstpY = dst->data[0] + slice_start * dst_pitchY;
+    const int c2 = td->c2;
+    const int c3 = td->c3;
+    const int c4 = td->c4;
+    const int c5 = td->c5;
+    const int c6 = td->c6;
+    const int c7 = td->c7;
+    int x, y;
+
+    for (y = slice_start; y < slice_end; y++) {
+        for (x = 0; x < width; x++) {
+            const int u = srcpU[x] - 128;
+            const int v = srcpV[x] - 128;
+            const int uvval = c2 * u + c3 * v + 1081344;
+            dstpY[x] = CB((65536 * (srcpY[x] - 16) + uvval) >> 16);
+            dstpU[x] = CB((c4 * u + c5 * v + 8421376) >> 16);
+            dstpV[x] = CB((c6 * u + c7 * v + 8421376) >> 16);
+        }
+        srcpY += src_pitchY;
+        dstpY += dst_pitchY;
+        srcpU += src_pitchUV;
+        srcpV += src_pitchUV;
+        dstpU += dst_pitchUV;
+        dstpV += dst_pitchUV;
+    }
+
+    return 0;
+}
+
 static int process_slice_yuv422p(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
 {
     const ThreadData *td = arg;
@@ -350,6 +397,7 @@ static int config_input(AVFilterLink *inlink)
 static int query_formats(AVFilterContext *ctx)
 {
     static const enum AVPixelFormat pix_fmts[] = {
+        AV_PIX_FMT_YUV444P,
         AV_PIX_FMT_YUV422P,
         AV_PIX_FMT_YUV420P,
         AV_PIX_FMT_UYVY422,
@@ -411,7 +459,10 @@ static int filter_frame(AVFilterLink *link, AVFrame *in)
     td.c6 = color->yuv_convert[color->mode][2][1];
     td.c7 = color->yuv_convert[color->mode][2][2];
 
-    if (in->format == AV_PIX_FMT_YUV422P)
+    if (in->format == AV_PIX_FMT_YUV444P)
+        ctx->internal->execute(ctx, process_slice_yuv444p, &td, NULL,
+                               FFMIN(in->height, ctx->graph->nb_threads));
+    else if (in->format == AV_PIX_FMT_YUV422P)
         ctx->internal->execute(ctx, process_slice_yuv422p, &td, NULL,
                                FFMIN(in->height, ctx->graph->nb_threads));
     else if (in->format == AV_PIX_FMT_YUV420P)