avfilter/drawutils: add support for full range

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

libavfilter/drawutils.c

@@ -181,6 +181,7 @@ int ff_draw_init(FFDrawContext *draw, enum AVPixelFormat format, unsigned flags)
     const AVComponentDescriptor *c;
     unsigned i, nb_planes = 0;
     int pixelstep[MAX_PLANES] = { 0 };
+    int full_range = 0;
 
     if (!desc || !desc->name)
         return AVERROR(EINVAL);
@@ -188,6 +189,9 @@ int ff_draw_init(FFDrawContext *draw, enum AVPixelFormat format, unsigned flags)
         return AVERROR(ENOSYS);
     if (format == AV_PIX_FMT_P010LE || format == AV_PIX_FMT_P010BE || format == AV_PIX_FMT_P016LE || format == AV_PIX_FMT_P016BE)
         return AVERROR(ENOSYS);
+    if (format == AV_PIX_FMT_YUVJ420P || format == AV_PIX_FMT_YUVJ422P || format == AV_PIX_FMT_YUVJ444P ||
+        format == AV_PIX_FMT_YUVJ411P || format == AV_PIX_FMT_YUVJ440P)
+        full_range = 1;
     for (i = 0; i < desc->nb_components; i++) {
         c = &desc->comp[i];
         /* for now, only 8-16 bits formats */
@@ -214,6 +218,7 @@ int ff_draw_init(FFDrawContext *draw, enum AVPixelFormat format, unsigned flags)
     draw->format    = format;
     draw->nb_planes = nb_planes;
     draw->flags     = flags;
+    draw->full_range = full_range;
     memcpy(draw->pixelstep, pixelstep, sizeof(draw->pixelstep));
     draw->hsub[1] = draw->hsub[2] = draw->hsub_max = desc->log2_chroma_w;
     draw->vsub[1] = draw->vsub[2] = draw->vsub_max = desc->log2_chroma_h;
@@ -249,9 +254,9 @@ void ff_draw_color(FFDrawContext *draw, FFDrawColor *color, const uint8_t rgba[4
     } else if (draw->nb_planes >= 2) {
         /* assume YUV */
         const AVPixFmtDescriptor *desc = draw->desc;
-        color->comp[desc->comp[0].plane].u8[desc->comp[0].offset] = RGB_TO_Y_CCIR(rgba[0], rgba[1], rgba[2]);
-        color->comp[desc->comp[1].plane].u8[desc->comp[1].offset] = RGB_TO_U_CCIR(rgba[0], rgba[1], rgba[2], 0);
-        color->comp[desc->comp[2].plane].u8[desc->comp[2].offset] = RGB_TO_V_CCIR(rgba[0], rgba[1], rgba[2], 0);
+        color->comp[desc->comp[0].plane].u8[desc->comp[0].offset] = draw->full_range ? RGB_TO_Y_JPEG(rgba[0], rgba[1], rgba[2]) : RGB_TO_Y_CCIR(rgba[0], rgba[1], rgba[2]);
+        color->comp[desc->comp[1].plane].u8[desc->comp[1].offset] = draw->full_range ? RGB_TO_U_JPEG(rgba[0], rgba[1], rgba[2]) : RGB_TO_U_CCIR(rgba[0], rgba[1], rgba[2], 0);
+        color->comp[desc->comp[2].plane].u8[desc->comp[2].offset] = draw->full_range ? RGB_TO_V_JPEG(rgba[0], rgba[1], rgba[2]) : RGB_TO_V_CCIR(rgba[0], rgba[1], rgba[2], 0);
         color->comp[3].u8[0] = rgba[3];
 #define EXPAND(compn) \
         if (desc->comp[compn].depth > 8) \

libavfilter/drawutils.h

@@ -55,6 +55,7 @@ typedef struct FFDrawContext {
     uint8_t vsub[MAX_PLANES];  /*< vertical subsampling */
     uint8_t hsub_max;
     uint8_t vsub_max;
+    int full_range;
     unsigned flags;
 } FFDrawContext;
 

libavutil/colorspace.h

@@ -107,4 +107,16 @@ static inline int C_JPEG_TO_CCIR(int y) {
 (((FIX(0.50000*224.0/255.0) * r1 - FIX(0.41869*224.0/255.0) * g1 -           \
    FIX(0.08131*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
 
+#define RGB_TO_Y_JPEG(r, g, b) \
+(FFMIN((FIX(0.29900) * (r) + FIX(0.58700) * (g) + \
+  FIX(0.11400) * (b) + (ONE_HALF)) >> SCALEBITS, 255))
+
+#define RGB_TO_U_JPEG(r1, g1, b1)\
+(((- FIX(0.16874) * r1 - FIX(0.33126) * g1 + \
+     FIX(0.50000) * b1 + (ONE_HALF) - 1) >> (SCALEBITS)) + 128)
+
+#define RGB_TO_V_JPEG(r1, g1, b1)\
+(((FIX(0.50000) * r1 - FIX(0.41869) * g1 - \
+   FIX(0.08131) * b1 + (ONE_HALF) - 1) >> (SCALEBITS)) + 128)
+
 #endif /* AVUTIL_COLORSPACE_H */

tests/ref/fate/filter-pixfmts-pad

@@ -62,8 +62,8 @@ yuva444p            fb60941a57596b277417a3c7c00aa194
 yuva444p10le        251ea4ead8300d752eb355a08cbb0352
 yuva444p16le        5b65287e1862d2d9f1ad2cfdcde94661
 yuva444p9le         e6946c10b94c271e7ea24b3bcff314e1
-yuvj411p            ca967e68759a4956729dd366adc7e7fa
-yuvj420p            c00611cd5f1558047d579d8a7d30e381
-yuvj422p            b3acdf07147a7598836065836ad8420b
-yuvj440p            3446ba4b1d7fdf536c926cee643c2b35
-yuvj444p            3b0f1a185af048b9e0b202d003fc7e62
+yuvj411p            87dbac57b211ab4823c1abbd702f1516
+yuvj420p            1abef62bce65131ca4913eb2006fd860
+yuvj422p            198c57b519e2be14b150889bd7f94898
+yuvj440p            e6533260d197ad15e39319117c57473e
+yuvj444p            26a44748960513783ea676eff409d89a