Move pixdesc.{h,c} from libavcodec to libavutil.

This way pixdescs can be used without requiring a dependency on
libavcodec.

Originally committed as revision 20389 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 596 insertions, 0 deletions

diff --git a/libavutil/pixdesc.c b/libavutil/pixdesc.c
new file mode 100644
index 0000000000..7e8cea76c6
--- /dev/null
+++ b/libavutil/pixdesc.c
@@ -0,0 +1,596 @@
+/*
+ * pixel format descriptor
+ * Copyright (c) 2009 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "pixfmt.h"
+#include "pixdesc.h"
+
+const AVPixFmtDescriptor av_pix_fmt_descriptors[PIX_FMT_NB] = {
+    [PIX_FMT_YUV420P] = {
+        .name = "yuv420p",
+        .nb_channels  = 3,
+        .log2_chroma_w= 1,
+        .log2_chroma_h= 1,
+        .comp = {
+            {0,0,1,0,7},        /* Y */
+            {1,0,1,0,7},        /* U */
+            {2,0,1,0,7},        /* V */
+        },
+    },
+    [PIX_FMT_YUYV422] = {
+        .name = "yuyv422",
+        .nb_channels  = 3,
+        .log2_chroma_w= 1,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,1,1,0,7},        /* Y */
+            {0,3,2,0,7},        /* U */
+            {0,3,4,0,7},        /* V */
+        },
+    },
+    [PIX_FMT_RGB24] = {
+        .name = "rgb24",
+        .nb_channels  = 3,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,2,1,0,7},        /* R */
+            {0,2,2,0,7},        /* G */
+            {0,2,3,0,7},        /* B */
+        },
+    },
+    [PIX_FMT_BGR24] = {
+        .name = "bgr24",
+        .nb_channels  = 3,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,2,1,0,7},        /* B */
+            {0,2,2,0,7},        /* G */
+            {0,2,3,0,7},        /* R */
+        },
+    },
+    [PIX_FMT_YUV422P] = {
+        .name = "yuv422p",
+        .nb_channels  = 3,
+        .log2_chroma_w= 1,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,0,1,0,7},        /* Y */
+            {1,0,1,0,7},        /* U */
+            {2,0,1,0,7},        /* V */
+        },
+    },
+    [PIX_FMT_YUV444P] = {
+        .name = "yuv444p",
+        .nb_channels  = 3,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,0,1,0,7},        /* Y */
+            {1,0,1,0,7},        /* U */
+            {2,0,1,0,7},        /* V */
+        },
+    },
+    [PIX_FMT_YUV410P] = {
+        .name = "yuv410p",
+        .nb_channels  = 3,
+        .log2_chroma_w= 2,
+        .log2_chroma_h= 2,
+        .comp = {
+            {0,0,1,0,7},        /* Y */
+            {1,0,1,0,7},        /* U */
+            {2,0,1,0,7},        /* V */
+        },
+    },
+    [PIX_FMT_YUV411P] = {
+        .name = "yuv411p",
+        .nb_channels  = 3,
+        .log2_chroma_w= 2,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,0,1,0,7},        /* Y */
+            {1,0,1,0,7},        /* U */
+            {2,0,1,0,7},        /* V */
+        },
+    },
+    [PIX_FMT_GRAY8] = {
+        .name = "gray8",
+        .nb_channels  = 1,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,0,1,0,7},        /* Y */
+        },
+    },
+    [PIX_FMT_MONOWHITE] = {
+        .name = "monowhite",
+        .nb_channels  = 1,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,0,1,0,0},        /* Y */
+        },
+        .flags = PIX_FMT_BITSTREAM,
+    },
+    [PIX_FMT_MONOBLACK] = {
+        .name = "monoblack",
+        .nb_channels  = 1,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,0,1,7,0},        /* Y */
+        },
+        .flags = PIX_FMT_BITSTREAM,
+    },
+    [PIX_FMT_PAL8] = {
+        .name = "pal8",
+        .nb_channels  = 1,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,0,1,0,7},
+        },
+        .flags = PIX_FMT_PAL,
+    },
+    [PIX_FMT_YUVJ420P] = {
+        .name = "yuvj420p",
+        .nb_channels  = 3,
+        .log2_chroma_w= 1,
+        .log2_chroma_h= 1,
+        .comp = {
+            {0,0,1,0,7},        /* Y */
+            {1,0,1,0,7},        /* U */
+            {2,0,1,0,7},        /* V */
+        },
+    },
+    [PIX_FMT_YUVJ422P] = {
+        .name = "yuvj422p",
+        .nb_channels  = 3,
+        .log2_chroma_w= 1,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,0,1,0,7},        /* Y */
+            {1,0,1,0,7},        /* U */
+            {2,0,1,0,7},        /* V */
+        },
+    },
+    [PIX_FMT_YUVJ444P] = {
+        .name = "yuvj444p",
+        .nb_channels  = 3,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,0,1,0,7},        /* Y */
+            {1,0,1,0,7},        /* U */
+            {2,0,1,0,7},        /* V */
+        },
+    },
+    [PIX_FMT_UYVY422] = {
+        .name = "uyvy422",
+        .nb_channels  = 3,
+        .log2_chroma_w= 1,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,1,2,0,7},        /* Y */
+            {0,3,1,0,7},        /* U */
+            {0,3,3,0,7},        /* V */
+        },
+    },
+    [PIX_FMT_UYYVYY411] = {
+        .name = "uyyvyy411",
+        .nb_channels  = 3,
+        .log2_chroma_w= 2,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,3,2,0,7},        /* Y */
+            {0,5,1,0,7},        /* U */
+            {0,5,4,0,7},        /* V */
+        },
+    },
+    [PIX_FMT_BGR8] = {
+        .name = "bgr8",
+        .nb_channels  = 3,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,0,1,6,1},        /* B */
+            {0,0,1,3,2},        /* G */
+            {0,0,1,0,2},        /* R */
+        },
+    },
+    [PIX_FMT_BGR4] = {
+        .name = "bgr4",
+        .nb_channels  = 3,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,3,1,0,0},        /* B */
+            {0,3,2,0,1},        /* G */
+            {0,3,4,0,0},        /* R */
+        },
+        .flags = PIX_FMT_BITSTREAM,
+    },
+    [PIX_FMT_BGR4_BYTE] = {
+        .name = "bgr4_byte",
+        .nb_channels  = 3,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,0,1,3,0},        /* B */
+            {0,0,1,1,1},        /* G */
+            {0,0,1,0,0},        /* R */
+        },
+    },
+    [PIX_FMT_RGB8] = {
+        .name = "rgb8",
+        .nb_channels  = 3,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,0,1,6,1},        /* R */
+            {0,0,1,3,2},        /* G */
+            {0,0,1,0,2},        /* B */
+        },
+    },
+    [PIX_FMT_RGB4] = {
+        .name = "rgb4",
+        .nb_channels  = 3,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,3,1,0,0},       /* R */
+            {0,3,2,0,1},       /* G */
+            {0,3,4,0,0},       /* B */
+        },
+        .flags = PIX_FMT_BITSTREAM,
+    },
+    [PIX_FMT_RGB4_BYTE] = {
+        .name = "rgb4_byte",
+        .nb_channels  = 3,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,0,1,3,0},        /* R */
+            {0,0,1,1,1},        /* G */
+            {0,0,1,0,0},        /* B */
+        },
+    },
+    [PIX_FMT_NV12] = {
+        .name = "nv12",
+        .nb_channels  = 3,
+        .log2_chroma_w= 1,
+        .log2_chroma_h= 1,
+        .comp = {
+            {0,0,1,0,7},        /* Y */
+            {1,1,1,0,7},        /* U */
+            {1,1,2,0,7},        /* V */
+        },
+    },
+    [PIX_FMT_NV21] = {
+        .name = "nv21",
+        .nb_channels  = 3,
+        .log2_chroma_w= 1,
+        .log2_chroma_h= 1,
+        .comp = {
+            {0,0,1,0,7},        /* Y */
+            {1,1,1,0,7},        /* V */
+            {1,1,2,0,7},        /* U */
+        },
+    },
+    [PIX_FMT_ARGB] = {
+        .name = "argb",
+        .nb_channels  = 4,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,3,1,0,7},        /* A */
+            {0,3,2,0,7},        /* R */
+            {0,3,3,0,7},        /* G */
+            {0,3,4,0,7},        /* B */
+        },
+    },
+    [PIX_FMT_RGBA] = {
+        .name = "rgba",
+        .nb_channels  = 4,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,3,1,0,7},        /* R */
+            {0,3,2,0,7},        /* G */
+            {0,3,3,0,7},        /* B */
+            {0,3,4,0,7},        /* A */
+        },
+    },
+    [PIX_FMT_ABGR] = {
+        .name = "abgr",
+        .nb_channels  = 4,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,3,1,0,7},        /* A */
+            {0,3,2,0,7},        /* B */
+            {0,3,3,0,7},        /* G */
+            {0,3,4,0,7},        /* R */
+        },
+    },
+    [PIX_FMT_BGRA] = {
+        .name = "bgra",
+        .nb_channels  = 4,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,3,1,0,7},        /* B */
+            {0,3,2,0,7},        /* G */
+            {0,3,3,0,7},        /* R */
+            {0,3,4,0,7},        /* A */
+        },
+    },
+    [PIX_FMT_GRAY16BE] = {
+        .name = "gray16be",
+        .nb_channels  = 1,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,1,1,0,15},       /* Y */
+        },
+        .flags = PIX_FMT_BE,
+    },
+    [PIX_FMT_GRAY16LE] = {
+        .name = "gray16le",
+        .nb_channels  = 1,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,1,1,0,15},       /* Y */
+        },
+    },
+    [PIX_FMT_YUV440P] = {
+        .name = "yuv440p",
+        .nb_channels  = 3,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 1,
+        .comp = {
+            {0,0,1,0,7},        /* Y */
+            {1,0,1,0,7},        /* U */
+            {2,0,1,0,7},        /* V */
+        },
+    },
+    [PIX_FMT_YUVJ440P] = {
+        .name = "yuvj440p",
+        .nb_channels  = 3,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 1,
+        .comp = {
+            {0,0,1,0,7},        /* Y */
+            {1,0,1,0,7},        /* U */
+            {2,0,1,0,7},        /* V */
+        },
+    },
+    [PIX_FMT_YUVA420P] = {
+        .name = "yuva420p",
+        .nb_channels  = 4,
+        .log2_chroma_w= 1,
+        .log2_chroma_h= 1,
+        .comp = {
+            {0,0,1,0,7},        /* Y */
+            {1,0,1,0,7},        /* U */
+            {2,0,1,0,7},        /* V */
+            {3,0,1,0,7},        /* A */
+        },
+    },
+    [PIX_FMT_RGB48BE] = {
+        .name = "rgb48be",
+        .nb_channels  = 3,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,5,1,0,15},       /* R */
+            {0,5,3,0,15},       /* G */
+            {0,5,5,0,15},       /* B */
+        },
+        .flags = PIX_FMT_BE,
+    },
+    [PIX_FMT_RGB48LE] = {
+        .name = "rgb48le",
+        .nb_channels  = 3,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,5,1,0,15},       /* R */
+            {0,5,3,0,15},       /* G */
+            {0,5,5,0,15},       /* B */
+        },
+    },
+    [PIX_FMT_RGB565BE] = {
+        .name = "rgb565be",
+        .nb_channels  = 3,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,1,0,3,4},        /* R */
+            {0,1,1,5,5},        /* G */
+            {0,1,1,0,4},        /* B */
+        },
+        .flags = PIX_FMT_BE,
+    },
+    [PIX_FMT_RGB565LE] = {
+        .name = "rgb565le",
+        .nb_channels  = 3,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,1,2,3,4},        /* R */
+            {0,1,1,5,5},        /* G */
+            {0,1,1,0,4},        /* B */
+        },
+    },
+    [PIX_FMT_RGB555BE] = {
+        .name = "rgb555be",
+        .nb_channels  = 3,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,1,0,2,4},        /* R */
+            {0,1,1,5,4},        /* G */
+            {0,1,1,0,4},        /* B */
+        },
+        .flags = PIX_FMT_BE,
+    },
+    [PIX_FMT_RGB555LE] = {
+        .name = "rgb555le",
+        .nb_channels  = 3,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,1,2,2,4},        /* R */
+            {0,1,1,5,4},        /* G */
+            {0,1,1,0,4},        /* B */
+        },
+    },
+    [PIX_FMT_BGR565BE] = {
+        .name = "bgr565be",
+        .nb_channels  = 3,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,1,0,3,4},        /* B */
+            {0,1,1,5,5},        /* G */
+            {0,1,1,0,4},        /* R */
+        },
+        .flags = PIX_FMT_BE,
+    },
+    [PIX_FMT_BGR565LE] = {
+        .name = "bgr565le",
+        .nb_channels  = 3,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,1,2,3,4},        /* B */
+            {0,1,1,5,5},        /* G */
+            {0,1,1,0,4},        /* R */
+        },
+    },
+    [PIX_FMT_BGR555BE] = {
+        .name = "bgr555be",
+        .nb_channels  = 3,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,1,0,2,4},       /* B */
+            {0,1,1,5,4},       /* G */
+            {0,1,1,0,4},       /* R */
+        },
+        .flags = PIX_FMT_BE,
+     },
+    [PIX_FMT_BGR555LE] = {
+        .name = "bgr555le",
+        .nb_channels  = 3,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,1,2,2,4},        /* B */
+            {0,1,1,5,4},        /* G */
+            {0,1,1,0,4},        /* R */
+        },
+    },
+    [PIX_FMT_YUV420P16LE] = {
+        .name = "yuv420p16le",
+        .nb_channels  = 3,
+        .log2_chroma_w= 1,
+        .log2_chroma_h= 1,
+        .comp = {
+            {0,1,1,0,15},        /* Y */
+            {1,1,1,0,15},        /* U */
+            {2,1,1,0,15},        /* V */
+        },
+    },
+    [PIX_FMT_YUV420P16BE] = {
+        .name = "yuv420p16be",
+        .nb_channels  = 3,
+        .log2_chroma_w= 1,
+        .log2_chroma_h= 1,
+        .comp = {
+            {0,1,1,0,15},        /* Y */
+            {1,1,1,0,15},        /* U */
+            {2,1,1,0,15},        /* V */
+        },
+        .flags = PIX_FMT_BE,
+    },
+    [PIX_FMT_YUV422P16LE] = {
+        .name = "yuv422p16le",
+        .nb_channels  = 3,
+        .log2_chroma_w= 1,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,1,1,0,15},        /* Y */
+            {1,1,1,0,15},        /* U */
+            {2,1,1,0,15},        /* V */
+        },
+    },
+    [PIX_FMT_YUV422P16BE] = {
+        .name = "yuv422p16be",
+        .nb_channels  = 3,
+        .log2_chroma_w= 1,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,1,1,0,15},        /* Y */
+            {1,1,1,0,15},        /* U */
+            {2,1,1,0,15},        /* V */
+        },
+        .flags = PIX_FMT_BE,
+    },
+    [PIX_FMT_YUV444P16LE] = {
+        .name = "yuv444p16le",
+        .nb_channels  = 3,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,1,1,0,15},        /* Y */
+            {1,1,1,0,15},        /* U */
+            {2,1,1,0,15},        /* V */
+        },
+    },
+    [PIX_FMT_YUV444P16BE] = {
+        .name = "yuv444p16be",
+        .nb_channels  = 3,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            {0,1,1,0,15},        /* Y */
+            {1,1,1,0,15},        /* U */
+            {2,1,1,0,15},        /* V */
+        },
+        .flags = PIX_FMT_BE,
+    },
+};
+
+int av_get_bits_per_pixel(const AVPixFmtDescriptor *pixdesc)
+{
+    int c, bits = 0;
+    int log2_pixels = pixdesc->log2_chroma_w + pixdesc->log2_chroma_h;
+
+    for (c = 0; c < pixdesc->nb_channels; c++) {
+        int s = c==1 || c==2 ? 0 : log2_pixels;
+        bits += (pixdesc->comp[c].depth_minus1+1) << s;
+    }
+
+    return bits >> log2_pixels;
+}