+
+/* */
+#define VLC_CODEC_YUV_PLANAR_410 \
+ VLC_CODEC_I410, VLC_CODEC_YV9
+
+#define VLC_CODEC_YUV_PLANAR_420 \
+ VLC_CODEC_I420, VLC_CODEC_YV12, VLC_CODEC_J420
+
+#define VLC_CODEC_YUV_PLANAR_422 \
+ VLC_CODEC_I422, VLC_CODEC_J422
+
+#define VLC_CODEC_YUV_PLANAR_440 \
+ VLC_CODEC_I440, VLC_CODEC_J440
+
+#define VLC_CODEC_YUV_PLANAR_444 \
+ VLC_CODEC_I444, VLC_CODEC_J444
+
+#define VLC_CODEC_YUV_PACKED \
+ VLC_CODEC_YUYV, VLC_CODEC_YVYU, \
+ VLC_CODEC_UYVY, VLC_CODEC_VYUY
+
+#define VLC_CODEC_FALLBACK_420 \
+ VLC_CODEC_YUV_PLANAR_422, VLC_CODEC_YUV_PACKED, \
+ VLC_CODEC_YUV_PLANAR_444, VLC_CODEC_YUV_PLANAR_440, \
+ VLC_CODEC_I411, VLC_CODEC_YUV_PLANAR_410, VLC_CODEC_Y211
+
+static const vlc_fourcc_t p_I420_fallback[] = {
+ VLC_CODEC_I420, VLC_CODEC_YV12, VLC_CODEC_J420, VLC_CODEC_FALLBACK_420, 0
+};
+static const vlc_fourcc_t p_J420_fallback[] = {
+ VLC_CODEC_J420, VLC_CODEC_I420, VLC_CODEC_YV12, VLC_CODEC_FALLBACK_420, 0
+};
+static const vlc_fourcc_t p_YV12_fallback[] = {
+ VLC_CODEC_YV12, VLC_CODEC_I420, VLC_CODEC_J420, VLC_CODEC_FALLBACK_420, 0
+};
+
+#define VLC_CODEC_FALLBACK_422 \
+ VLC_CODEC_YUV_PACKED, VLC_CODEC_YUV_PLANAR_420, \
+ VLC_CODEC_YUV_PLANAR_444, VLC_CODEC_YUV_PLANAR_440, \
+ VLC_CODEC_I411, VLC_CODEC_YUV_PLANAR_410, VLC_CODEC_Y211
+
+static const vlc_fourcc_t p_I422_fallback[] = {
+ VLC_CODEC_I422, VLC_CODEC_J422, VLC_CODEC_FALLBACK_422, 0
+};
+static const vlc_fourcc_t p_J422_fallback[] = {
+ VLC_CODEC_J422, VLC_CODEC_I422, VLC_CODEC_FALLBACK_422, 0
+};
+
+#define VLC_CODEC_FALLBACK_444 \
+ VLC_CODEC_YUV_PLANAR_422, VLC_CODEC_YUV_PACKED, \
+ VLC_CODEC_YUV_PLANAR_420, VLC_CODEC_YUV_PLANAR_440, \
+ VLC_CODEC_I411, VLC_CODEC_YUV_PLANAR_410, VLC_CODEC_Y211
+
+static const vlc_fourcc_t p_I444_fallback[] = {
+ VLC_CODEC_I444, VLC_CODEC_J444, VLC_CODEC_FALLBACK_444, 0
+};
+static const vlc_fourcc_t p_J444_fallback[] = {
+ VLC_CODEC_J444, VLC_CODEC_I444, VLC_CODEC_FALLBACK_444, 0
+};
+
+static const vlc_fourcc_t p_I440_fallback[] = {
+ VLC_CODEC_I440,
+ VLC_CODEC_YUV_PLANAR_420,
+ VLC_CODEC_YUV_PLANAR_422,
+ VLC_CODEC_YUV_PLANAR_444,
+ VLC_CODEC_YUV_PACKED,
+ VLC_CODEC_I411, VLC_CODEC_YUV_PLANAR_410, VLC_CODEC_Y211, 0
+};
+
+#define VLC_CODEC_FALLBACK_PACKED \
+ VLC_CODEC_YUV_PLANAR_422, VLC_CODEC_YUV_PLANAR_420, \
+ VLC_CODEC_YUV_PLANAR_444, VLC_CODEC_YUV_PLANAR_440, \
+ VLC_CODEC_I411, VLC_CODEC_YUV_PLANAR_410, VLC_CODEC_Y211
+
+static const vlc_fourcc_t p_YUYV_fallback[] = {
+ VLC_CODEC_YUYV,
+ VLC_CODEC_YVYU,
+ VLC_CODEC_UYVY,
+ VLC_CODEC_VYUY,
+ VLC_CODEC_FALLBACK_PACKED, 0
+};
+static const vlc_fourcc_t p_YVYU_fallback[] = {
+ VLC_CODEC_YVYU,
+ VLC_CODEC_YUYV,
+ VLC_CODEC_UYVY,
+ VLC_CODEC_VYUY,
+ VLC_CODEC_FALLBACK_PACKED, 0
+};
+static const vlc_fourcc_t p_UYVY_fallback[] = {
+ VLC_CODEC_UYVY,
+ VLC_CODEC_VYUY,
+ VLC_CODEC_YUYV,
+ VLC_CODEC_YVYU,
+ VLC_CODEC_FALLBACK_PACKED, 0
+};
+static const vlc_fourcc_t p_VYUY_fallback[] = {
+ VLC_CODEC_VYUY,
+ VLC_CODEC_UYVY,
+ VLC_CODEC_YUYV,
+ VLC_CODEC_YVYU,
+ VLC_CODEC_FALLBACK_PACKED, 0
+};
+
+static const vlc_fourcc_t *pp_YUV_fallback[] = {
+ p_YV12_fallback,
+ p_I420_fallback,
+ p_J420_fallback,
+ p_I422_fallback,
+ p_J422_fallback,
+ p_I444_fallback,
+ p_J444_fallback,
+ p_I440_fallback,
+ p_YUYV_fallback,
+ p_YVYU_fallback,
+ p_UYVY_fallback,
+ p_VYUY_fallback,
+ NULL,
+};
+
+static const vlc_fourcc_t p_list_YUV[] = {
+ VLC_CODEC_YUV_PLANAR_420,
+ VLC_CODEC_YUV_PLANAR_422,
+ VLC_CODEC_YUV_PLANAR_440,
+ VLC_CODEC_YUV_PLANAR_444,
+ VLC_CODEC_YUV_PACKED,
+ VLC_CODEC_I411, VLC_CODEC_YUV_PLANAR_410, VLC_CODEC_Y211,
+ 0,
+};
+
+/* */
+static const vlc_fourcc_t p_RGB32_fallback[] = {
+ VLC_CODEC_RGB32,
+ VLC_CODEC_RGB24,
+ VLC_CODEC_RGB16,
+ VLC_CODEC_RGB15,
+ VLC_CODEC_RGB8,
+ 0,
+};
+static const vlc_fourcc_t p_RGB24_fallback[] = {
+ VLC_CODEC_RGB24,
+ VLC_CODEC_RGB32,
+ VLC_CODEC_RGB16,
+ VLC_CODEC_RGB15,
+ VLC_CODEC_RGB8,
+ 0,
+};
+static const vlc_fourcc_t p_RGB16_fallback[] = {
+ VLC_CODEC_RGB16,
+ VLC_CODEC_RGB24,
+ VLC_CODEC_RGB32,
+ VLC_CODEC_RGB15,
+ VLC_CODEC_RGB8,
+ 0,
+};
+static const vlc_fourcc_t p_RGB15_fallback[] = {
+ VLC_CODEC_RGB15,
+ VLC_CODEC_RGB16,
+ VLC_CODEC_RGB24,
+ VLC_CODEC_RGB32,
+ VLC_CODEC_RGB8,
+ 0,
+};
+static const vlc_fourcc_t p_RGB8_fallback[] = {
+ VLC_CODEC_RGB8,
+ VLC_CODEC_RGB15,
+ VLC_CODEC_RGB16,
+ VLC_CODEC_RGB24,
+ VLC_CODEC_RGB32,
+ 0,
+};
+static const vlc_fourcc_t *pp_RGB_fallback[] = {
+ p_RGB32_fallback,
+ p_RGB24_fallback,
+ p_RGB16_fallback,
+ p_RGB15_fallback,
+ p_RGB8_fallback,
+ NULL,
+};
+
+
+/* */
+static const vlc_fourcc_t *GetFallback( vlc_fourcc_t i_fourcc,
+ const vlc_fourcc_t *pp_fallback[],
+ const vlc_fourcc_t p_list[] )
+{
+ for( unsigned i = 0; pp_fallback[i]; i++ )
+ {
+ if( pp_fallback[i][0] == i_fourcc )
+ return pp_fallback[i];
+ }
+ return p_list;
+}
+
+const vlc_fourcc_t *vlc_fourcc_GetYUVFallback( vlc_fourcc_t i_fourcc )
+{
+ return GetFallback( i_fourcc, pp_YUV_fallback, p_list_YUV );
+}
+const vlc_fourcc_t *vlc_fourcc_GetRGBFallback( vlc_fourcc_t i_fourcc )
+{
+ return GetFallback( i_fourcc, pp_RGB_fallback, p_RGB32_fallback );
+}
+
+bool vlc_fourcc_AreUVPlanesSwapped( vlc_fourcc_t a, vlc_fourcc_t b )
+{
+ static const vlc_fourcc_t pp_swapped[][4] = {
+ { VLC_CODEC_YV12, VLC_CODEC_I420, VLC_CODEC_J420, 0 },
+ { VLC_CODEC_YV9, VLC_CODEC_I410, 0 },
+ { 0 }
+ };
+
+ for( int i = 0; pp_swapped[i][0]; i++ )
+ {
+ if( pp_swapped[i][0] == b )
+ {
+ vlc_fourcc_t t = a;
+ a = b;
+ b = t;
+ }
+ if( pp_swapped[i][0] != a )
+ continue;
+ for( int j = 1; pp_swapped[i][j]; j++ )
+ {
+ if( pp_swapped[i][j] == b )
+ return true;
+ }
+ }
+ return false;
+}
+
+bool vlc_fourcc_IsYUV(vlc_fourcc_t fcc)
+{
+ for( unsigned i = 0; p_list_YUV[i]; i++ )
+ {
+ if( p_list_YUV[i] == fcc )
+ return true;
+ }
+ return false;
+}
+
+#define PLANAR(n, w_den, h_den) \
+ { .plane_count = n, \
+ .p = { {.w = {1, 1}, .h = {1, 1}}, \
+ {.w = {1,w_den}, .h = {1,h_den}}, \
+ {.w = {1,w_den}, .h = {1,h_den}}, \
+ {.w = {1, 1}, .h = {1, 1}} }, \
+ .pixel_size = 1 }
+
+#define PACKED(size) \
+ { .plane_count = 1, \
+ .p = { {.w = {1,1}, .h = {1,1}} }, \
+ .pixel_size = size }
+
+static const struct
+{
+ vlc_fourcc_t p_fourcc[5];
+ vlc_chroma_description_t description;
+} p_list_chroma_description[] = {
+ { { VLC_CODEC_I411, 0 }, PLANAR(3, 4, 1) },
+ { { VLC_CODEC_YUV_PLANAR_410, 0 }, PLANAR(3, 4, 4) },
+ { { VLC_CODEC_YUV_PLANAR_420, 0 }, PLANAR(3, 2, 2) },
+ { { VLC_CODEC_YUV_PLANAR_422, 0 }, PLANAR(3, 2, 1) },
+ { { VLC_CODEC_YUV_PLANAR_440, 0 }, PLANAR(3, 1, 2) },
+ { { VLC_CODEC_YUV_PLANAR_444, 0 }, PLANAR(3, 1, 1) },
+ { { VLC_CODEC_YUVA, 0 }, PLANAR(4, 1, 1) },
+
+ { { VLC_CODEC_YUV_PACKED, 0 }, PACKED(2) },
+ { { VLC_CODEC_RGB8, VLC_CODEC_GREY,
+ VLC_CODEC_YUVP, VLC_CODEC_RGBP, 0 }, PACKED(1) },
+ { { VLC_CODEC_RGB16, VLC_CODEC_RGB15, 0 }, PACKED(2) },
+ { { VLC_CODEC_RGB24, 0 }, PACKED(3) },
+ { { VLC_CODEC_RGB32, VLC_CODEC_RGBA, 0 }, PACKED(4) },
+
+ { { VLC_CODEC_Y211, 0 }, { 1, { {{1,4}, {1,1}} }, 4 } },
+
+ { {0}, { 0, {}, 0 } }
+};
+
+#undef PACKED
+#undef PLANAR
+
+const vlc_chroma_description_t *vlc_fourcc_GetChromaDescription( vlc_fourcc_t i_fourcc )
+{
+ for( unsigned i = 0; p_list_chroma_description[i].p_fourcc[0]; i++ )
+ {
+ const vlc_fourcc_t *p_fourcc = p_list_chroma_description[i].p_fourcc;
+ for( unsigned j = 0; p_fourcc[j]; j++ )
+ {
+ if( p_fourcc[j] == i_fourcc )
+ return &p_list_chroma_description[i].description;
+ }
+ }
+ return NULL;
+}
+