ffmpeg roll of source to mar 9 version...

patched-ffmpeg-mt/libavutil/pixdesc.c

 /*
  * 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"
 
+#include "intreadwrite.h"
+
+void read_line(uint16_t *dst, const uint8_t *data[4], const int linesize[4],
+               const AVPixFmtDescriptor *desc, int x, int y, int c, int w, int read_pal_component)
+{
+    AVComponentDescriptor comp= desc->comp[c];
+    int plane= comp.plane;
+    int depth= comp.depth_minus1+1;
+    int mask = (1<<depth)-1;
+    int shift= comp.shift;
+    int step = comp.step_minus1+1;
+    int flags= desc->flags;
+
+    if (flags & PIX_FMT_BITSTREAM){
+        int skip = x*step + comp.offset_plus1-1;
+        const uint8_t *p = data[plane] + y*linesize[plane] + (skip>>3);
+        int shift = 8 - depth - (skip&7);
+
+        while(w--){
+            int val = (*p >> shift) & mask;
+            if(read_pal_component)
+                val= data[1][4*val + c];
+            shift -= step;
+            p -= shift>>3;
+            shift &= 7;
+            *dst++= val;
+        }
+    } else {
+        const uint8_t *p = data[plane]+ y*linesize[plane] + x*step + comp.offset_plus1-1;
+
+        while(w--){
+            int val;
+            if(flags & PIX_FMT_BE) val= AV_RB16(p);
+            else                   val= AV_RL16(p);
+            val = (val>>shift) & mask;
+            if(read_pal_component)
+                val= data[1][4*val + c];
+            p+= step;
+            *dst++= val;
+        }
+    }
+}
+
+void write_line(const uint16_t *src, uint8_t *data[4], const int linesize[4],
+                const AVPixFmtDescriptor *desc, int x, int y, int c, int w)
+{
+    AVComponentDescriptor comp = desc->comp[c];
+    int plane = comp.plane;
+    int depth = comp.depth_minus1+1;
+    int step  = comp.step_minus1+1;
+    int flags = desc->flags;
+
+    if (flags & PIX_FMT_BITSTREAM) {
+        int skip = x*step + comp.offset_plus1-1;
+        uint8_t *p = data[plane] + y*linesize[plane] + (skip>>3);
+        int shift = 8 - depth - (skip&7);
+
+        while (w--) {
+            *p |= *src++ << shift;
+            shift -= step;
+            p -= shift>>3;
+            shift &= 7;
+        }
+    } else {
+        int shift = comp.shift;
+        uint8_t *p = data[plane]+ y*linesize[plane] + x*step + comp.offset_plus1-1;
+
+        while (w--) {
+            if (flags & PIX_FMT_BE) {
+                uint16_t val = AV_RB16(p) | (*src++<<shift);
+                AV_WB16(p, val);
+            } else {
+                uint16_t val = AV_RL16(p) | (*src++<<shift);
+                AV_WL16(p, val);
+            }
+            p+= step;
+        }
+    }
+}
+
 const AVPixFmtDescriptor av_pix_fmt_descriptors[PIX_FMT_NB] = {
     [PIX_FMT_YUV420P] = {
         .name = "yuv420p",
         .nb_components= 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 */
@@ skipping 77 matching lines @@
         },
     },
     [PIX_FMT_GRAY8] = {
         .name = "gray",
         .nb_components= 1,
         .log2_chroma_w= 0,
         .log2_chroma_h= 0,
         .comp = {
             {0,0,1,0,7},        /* Y */
         },
+        .flags = PIX_FMT_PAL,
     },
     [PIX_FMT_MONOWHITE] = {
         .name = "monow",
         .nb_components= 1,
         .log2_chroma_w= 0,
         .log2_chroma_h= 0,
         .comp = {
             {0,0,1,0,0},        /* Y */
         },
         .flags = PIX_FMT_BITSTREAM,
@@ skipping 374 matching lines @@
         .name = "rgb555le",
         .nb_components= 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_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,
         .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 */
         },
@@ skipping 26 matching lines @@
         .name = "bgr555le",
         .nb_components= 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_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,
         .log2_chroma_h = 1,
         .flags = PIX_FMT_HWACCEL,
     },
     [PIX_FMT_VAAPI_IDCT] = {
         .name = "vaapi_idct",
         .log2_chroma_w = 1,
         .log2_chroma_h = 1,
@@ skipping 124 matching lines @@
     int c, bits = 0;
     int log2_pixels = pixdesc->log2_chroma_w + pixdesc->log2_chroma_h;
 
     for (c = 0; c < pixdesc->nb_components; c++) {
         int s = c==1 || c==2 ? 0 : log2_pixels;
         bits += (pixdesc->comp[c].depth_minus1+1) << s;
     }
 
     return bits >> log2_pixels;
 }