lavu: Drop the {minus,plus}1 suffix from AVComponentDescriptor fields

[ffmpeg] / libavutil / imgutils.c

diff --git a/libavutil/imgutils.c b/libavutil/imgutils.c
index a8b4d2a7f78b37112513d9a0fea3dbcde9889daa..4fb7a9b0aa80a13576e2ed2d6cd71eced66fbf80 100644 (file)
--- a/libavutil/imgutils.c
+++ b/libavutil/imgutils.c
@@ -24,8 +24,11 @@
 #include "common.h"
 #include "imgutils.h"
 #include "internal.h"
+#include "intreadwrite.h"
 #include "log.h"
+#include "mathematics.h"
 #include "pixdesc.h"
+#include "rational.h"
 
 void av_image_fill_max_pixsteps(int max_pixsteps[4], int max_pixstep_comps[4],
                                 const AVPixFmtDescriptor *pixdesc)
@@ -37,8 +40,8 @@ void av_image_fill_max_pixsteps(int max_pixsteps[4], int max_pixstep_comps[4],
 
     for (i = 0; i < 4; i++) {
         const AVComponentDescriptor *comp = &(pixdesc->comp[i]);
-        if ((comp->step_minus1+1) > max_pixsteps[comp->plane]) {
-            max_pixsteps[comp->plane] = comp->step_minus1+1;
+        if (comp->step > max_pixsteps[comp->plane]) {
+            max_pixsteps[comp->plane] = comp->step;
             if (max_pixstep_comps)
                 max_pixstep_comps[comp->plane] = i;
         }
@@ -56,7 +59,7 @@ int av_image_get_linesize(enum AVPixelFormat pix_fmt, int width, int plane)
         return AVERROR(EINVAL);
 
     if (desc->flags & AV_PIX_FMT_FLAG_BITSTREAM)
-        return (width * (desc->comp[0].step_minus1+1) + 7) >> 3;
+        return (width * desc->comp[0].step + 7) >> 3;
 
     av_image_fill_max_pixsteps(max_step, max_step_comp, desc);
     s = (max_step_comp[plane] == 1 || max_step_comp[plane] == 2) ? desc->log2_chroma_w : 0;
@@ -76,9 +79,9 @@ int av_image_fill_linesizes(int linesizes[4], enum AVPixelFormat pix_fmt, int wi
         return AVERROR(EINVAL);
 
     if (desc->flags & AV_PIX_FMT_FLAG_BITSTREAM) {
-        if (width > (INT_MAX -7) / (desc->comp[0].step_minus1+1))
+        if (width > (INT_MAX - 7) / desc->comp[0].step)
             return AVERROR(EINVAL);
-        linesizes[0] = (width * (desc->comp[0].step_minus1+1) + 7) >> 3;
+        linesizes[0] = (width * desc->comp[0].step + 7) >> 3;
         return 0;
     }
 
@@ -170,7 +173,7 @@ int avpriv_set_systematic_pal2(uint32_t pal[256], enum AVPixelFormat pix_fmt)
         default:
             return AVERROR(EINVAL);
         }
-        pal[i] = b + (g<<8) + (r<<16);
+        pal[i] = b + (g << 8) + (r << 16) + (0xFFU << 24);
     }
 
     return 0;
@@ -228,6 +231,27 @@ int av_image_check_size(unsigned int w, unsigned int h, int log_offset, void *lo
     return AVERROR(EINVAL);
 }
 
+int av_image_check_sar(unsigned int w, unsigned int h, AVRational sar)
+{
+    int64_t scaled_dim;
+
+    if (!sar.den)
+        return AVERROR(EINVAL);
+
+    if (!sar.num || sar.num == sar.den)
+        return 0;
+
+    if (sar.num < sar.den)
+        scaled_dim = av_rescale_rnd(w, sar.num, sar.den, AV_ROUND_ZERO);
+    else
+        scaled_dim = av_rescale_rnd(h, sar.den, sar.num, AV_ROUND_ZERO);
+
+    if (scaled_dim > 0)
+        return 0;
+
+    return AVERROR(EINVAL);
+}
+
 void av_image_copy_plane(uint8_t       *dst, int dst_linesize,
                          const uint8_t *src, int src_linesize,
                          int bytewidth, int height)
@@ -275,3 +299,83 @@ void av_image_copy(uint8_t *dst_data[4], int dst_linesizes[4],
         }
     }
 }
+
+int av_image_fill_arrays(uint8_t *dst_data[4], int dst_linesize[4],
+                         const uint8_t *src, enum AVPixelFormat pix_fmt,
+                         int width, int height, int align)
+{
+    int ret, i;
+
+    ret = av_image_check_size(width, height, 0, NULL);
+    if (ret < 0)
+        return ret;
+
+    ret = av_image_fill_linesizes(dst_linesize, pix_fmt, width);
+    if (ret < 0)
+        return ret;
+
+    for (i = 0; i < 4; i++)
+        dst_linesize[i] = FFALIGN(dst_linesize[i], align);
+
+    return av_image_fill_pointers(dst_data, pix_fmt, height, src, dst_linesize);
+}
+
+int av_image_get_buffer_size(enum AVPixelFormat pix_fmt,
+                             int width, int height, int align)
+{
+    uint8_t *data[4];
+    int linesize[4];
+    int ret;
+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
+    if (!desc)
+        return AVERROR_BUG;
+
+    ret = av_image_check_size(width, height, 0, NULL);
+    if (ret < 0)
+        return ret;
+
+    // do not include palette for these pseudo-paletted formats
+    if (desc->flags & AV_PIX_FMT_FLAG_PSEUDOPAL)
+        return width * height;
+
+    return av_image_fill_arrays(data, linesize, NULL, pix_fmt,
+                                width, height, align);
+}
+
+int av_image_copy_to_buffer(uint8_t *dst, int dst_size,
+                            const uint8_t * const src_data[4],
+                            const int src_linesize[4],
+                            enum AVPixelFormat pix_fmt,
+                            int width, int height, int align)
+{
+    int i, j, nb_planes = 0, linesize[4];
+    int size = av_image_get_buffer_size(pix_fmt, width, height, align);
+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
+
+    if (size > dst_size || size < 0 || !desc)
+        return AVERROR(EINVAL);
+
+    for (i = 0; i < desc->nb_components; i++)
+        nb_planes = FFMAX(desc->comp[i].plane, nb_planes);
+
+    nb_planes++;
+
+    av_image_fill_linesizes(linesize, pix_fmt, width);
+    for (i = 0; i < nb_planes; i++) {
+        int h, shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
+        const uint8_t *src = src_data[i];
+        h = (height + (1 << shift) - 1) >> shift;
+
+        for (j = 0; j < h; j++) {
+            memcpy(dst, src, linesize[i]);
+            dst += FFALIGN(linesize[i], align);
+            src += src_linesize[i];
+        }
+    }
+
+    if (desc->flags & AV_PIX_FMT_FLAG_PAL)
+        memcpy((unsigned char *)(((size_t)dst + 3) & ~3),
+               src_data[1], 256 * 4);
+
+    return size;
+}