Add initial support for 12-bit color mode.

Patch by Janusz Krzysztofik jkrzyszt tis icnet pl
Original thread:
Subject: [FFmpeg-devel] [PATCH v2] Add initial support for 12-bit color mode.
Date: Mon, 1 Mar 2010 02:05:07 +0100

Originally committed as revision 22220 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/imgconvert.c

@@ -240,6 +240,18 @@ static const PixFmtInfo pix_fmt_info[PIX_FMT_NB] = {
         .pixel_type = FF_PIXEL_PACKED,
         .depth = 5,
     },
+    [PIX_FMT_RGB444BE] = {
+        .nb_channels = 3,
+        .color_type = FF_COLOR_RGB,
+        .pixel_type = FF_PIXEL_PACKED,
+        .depth = 4,
+    },
+    [PIX_FMT_RGB444LE] = {
+        .nb_channels = 3,
+        .color_type = FF_COLOR_RGB,
+        .pixel_type = FF_PIXEL_PACKED,
+        .depth = 4,
+    },
 
     /* gray / mono formats */
     [PIX_FMT_GRAY16BE] = {
@@ -316,6 +328,18 @@ static const PixFmtInfo pix_fmt_info[PIX_FMT_NB] = {
         .pixel_type = FF_PIXEL_PACKED,
         .depth = 5,
     },
+    [PIX_FMT_BGR444BE] = {
+        .nb_channels = 3,
+        .color_type = FF_COLOR_RGB,
+        .pixel_type = FF_PIXEL_PACKED,
+        .depth = 4,
+    },
+    [PIX_FMT_BGR444LE] = {
+        .nb_channels = 3,
+        .color_type = FF_COLOR_RGB,
+        .pixel_type = FF_PIXEL_PACKED,
+        .depth = 4,
+    },
     [PIX_FMT_RGB8] = {
         .nb_channels = 1,
         .color_type = FF_COLOR_RGB,
@@ -529,10 +553,14 @@ int ff_fill_linesize(AVPicture *picture, enum PixelFormat pix_fmt, int width)
         break;
     case PIX_FMT_GRAY16BE:
     case PIX_FMT_GRAY16LE:
+    case PIX_FMT_BGR444BE:
+    case PIX_FMT_BGR444LE:
     case PIX_FMT_BGR555BE:
     case PIX_FMT_BGR555LE:
     case PIX_FMT_BGR565BE:
     case PIX_FMT_BGR565LE:
+    case PIX_FMT_RGB444BE:
+    case PIX_FMT_RGB444LE:
     case PIX_FMT_RGB555BE:
     case PIX_FMT_RGB555LE:
     case PIX_FMT_RGB565BE:
@@ -626,10 +654,14 @@ int ff_fill_pointer(AVPicture *picture, uint8_t *ptr, enum PixelFormat pix_fmt,
     case PIX_FMT_RGB48LE:
     case PIX_FMT_GRAY16BE:
     case PIX_FMT_GRAY16LE:
+    case PIX_FMT_BGR444BE:
+    case PIX_FMT_BGR444LE:
     case PIX_FMT_BGR555BE:
     case PIX_FMT_BGR555LE:
     case PIX_FMT_BGR565BE:
     case PIX_FMT_BGR565LE:
+    case PIX_FMT_RGB444BE:
+    case PIX_FMT_RGB444LE:
     case PIX_FMT_RGB555BE:
     case PIX_FMT_RGB555LE:
     case PIX_FMT_RGB565BE:
@@ -699,10 +731,14 @@ int avpicture_layout(const AVPicture* src, enum PixelFormat pix_fmt, int width,
             pix_fmt == PIX_FMT_BGR565LE ||
             pix_fmt == PIX_FMT_BGR555BE ||
             pix_fmt == PIX_FMT_BGR555LE ||
+            pix_fmt == PIX_FMT_BGR444BE ||
+            pix_fmt == PIX_FMT_BGR444LE ||
             pix_fmt == PIX_FMT_RGB565BE ||
             pix_fmt == PIX_FMT_RGB565LE ||
             pix_fmt == PIX_FMT_RGB555BE ||
-            pix_fmt == PIX_FMT_RGB555LE)
+            pix_fmt == PIX_FMT_RGB555LE ||
+            pix_fmt == PIX_FMT_RGB444BE ||
+            pix_fmt == PIX_FMT_RGB444LE)
             w = width * 2;
         else if (pix_fmt == PIX_FMT_UYYVYY411)
             w = width + width/2;
@@ -838,10 +874,14 @@ static int avg_bits_per_pixel(enum PixelFormat pix_fmt)
         case PIX_FMT_RGB565LE:
         case PIX_FMT_RGB555BE:
         case PIX_FMT_RGB555LE:
+        case PIX_FMT_RGB444BE:
+        case PIX_FMT_RGB444LE:
         case PIX_FMT_BGR565BE:
         case PIX_FMT_BGR565LE:
         case PIX_FMT_BGR555BE:
         case PIX_FMT_BGR555LE:
+        case PIX_FMT_BGR444BE:
+        case PIX_FMT_BGR444LE:
             bits = 16;
             break;
         case PIX_FMT_UYYVYY411:
@@ -958,10 +998,14 @@ int ff_get_plane_bytewidth(enum PixelFormat pix_fmt, int width, int plane)
         case PIX_FMT_RGB565LE:
         case PIX_FMT_RGB555BE:
         case PIX_FMT_RGB555LE:
+        case PIX_FMT_RGB444BE:
+        case PIX_FMT_RGB444LE:
         case PIX_FMT_BGR565BE:
         case PIX_FMT_BGR565LE:
         case PIX_FMT_BGR555BE:
         case PIX_FMT_BGR555LE:
+        case PIX_FMT_BGR444BE:
+        case PIX_FMT_BGR444LE:
             bits = 16;
             break;
         case PIX_FMT_UYYVYY411:

libavutil/pixdesc.c

@@ -594,6 +594,29 @@ const AVPixFmtDescriptor av_pix_fmt_descriptors[PIX_FMT_NB] = {
             {0,1,1,0,4},        /* B */
         },
     },
+    [PIX_FMT_RGB444BE] = {
+        .name = "rgb444be",
+        .nb_components= 3,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,1,0,0,3},        /* R */
+            {0,1,1,4,3},        /* G */
+            {0,1,1,0,3},        /* B */
+        },
+        .flags = PIX_FMT_BE,
+    },
+    [PIX_FMT_RGB444LE] = {
+        .name = "rgb444le",
+        .nb_components= 3,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,1,2,0,3},        /* R */
+            {0,1,1,4,3},        /* G */
+            {0,1,1,0,3},        /* B */
+        },
+    },
     [PIX_FMT_BGR565BE] = {
         .name = "bgr565be",
         .nb_components= 3,
@@ -640,6 +663,29 @@ const AVPixFmtDescriptor av_pix_fmt_descriptors[PIX_FMT_NB] = {
             {0,1,1,0,4},        /* R */
         },
     },
+    [PIX_FMT_BGR444BE] = {
+        .name = "bgr444be",
+        .nb_components= 3,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,1,0,0,3},       /* B */
+            {0,1,1,4,3},       /* G */
+            {0,1,1,0,3},       /* R */
+        },
+        .flags = PIX_FMT_BE,
+     },
+    [PIX_FMT_BGR444LE] = {
+        .name = "bgr444le",
+        .nb_components= 3,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,1,2,0,3},        /* B */
+            {0,1,1,4,3},        /* G */
+            {0,1,1,0,3},        /* R */
+        },
+    },
     [PIX_FMT_VAAPI_MOCO] = {
         .name = "vaapi_moco",
         .log2_chroma_w = 1,

libavutil/pixfmt.h

@@ -127,6 +127,11 @@ enum PixelFormat {
     PIX_FMT_YUV444P16BE,  ///< planar YUV 4:4:4, 48bpp, (1 Cr & Cb sample per 1x1 Y samples), big-endian
     PIX_FMT_VDPAU_MPEG4,  ///< MPEG4 HW decoding with VDPAU, data[0] contains a vdpau_render_state struct which contains the bitstream of the slices as well as various fields extracted from headers
     PIX_FMT_DXVA2_VLD,    ///< HW decoding through DXVA2, Picture.data[3] contains a LPDIRECT3DSURFACE9 pointer
+
+    PIX_FMT_RGB444BE,  ///< packed RGB 4:4:4, 16bpp, (msb)4A 4R 4G 4B(lsb), big-endian, most significant bits to 0
+    PIX_FMT_RGB444LE,  ///< packed RGB 4:4:4, 16bpp, (msb)4A 4R 4G 4B(lsb), little-endian, most significant bits to 0
+    PIX_FMT_BGR444BE,  ///< packed BGR 4:4:4, 16bpp, (msb)4A 4B 4G 4R(lsb), big-endian, most significant bits to 1
+    PIX_FMT_BGR444LE,  ///< packed BGR 4:4:4, 16bpp, (msb)4A 4B 4G 4R(lsb), little-endian, most significant bits to 1
     PIX_FMT_NB,        ///< number of pixel formats, DO NOT USE THIS if you want to link with shared libav* because the number of formats might differ between versions
 };
 
@@ -145,8 +150,10 @@ enum PixelFormat {
 #define PIX_FMT_RGB48  PIX_FMT_NE(RGB48BE,  RGB48LE)
 #define PIX_FMT_RGB565 PIX_FMT_NE(RGB565BE, RGB565LE)
 #define PIX_FMT_RGB555 PIX_FMT_NE(RGB555BE, RGB555LE)
+#define PIX_FMT_RGB444 PIX_FMT_NE(RGB444BE, RGB444LE)
 #define PIX_FMT_BGR565 PIX_FMT_NE(BGR565BE, BGR565LE)
 #define PIX_FMT_BGR555 PIX_FMT_NE(BGR555BE, BGR555LE)
+#define PIX_FMT_BGR444 PIX_FMT_NE(BGR444BE, BGR444LE)
 
 #define PIX_FMT_YUV420P16 PIX_FMT_NE(YUV420P16BE, YUV420P16LE)
 #define PIX_FMT_YUV422P16 PIX_FMT_NE(YUV422P16BE, YUV422P16LE)