build: Store library version numbers in .version files

[ffmpeg] / libavfilter / vf_hflip.c

diff --git a/libavfilter/vf_hflip.c b/libavfilter/vf_hflip.c
index ea1db4fe29ecd85c1ed611af0e9de1bd8de2e977..1eb8d698d1375a3e5a043f0d61d66fce09d1156c 100644 (file)
--- a/libavfilter/vf_hflip.c
+++ b/libavfilter/vf_hflip.c
@@ -35,7 +35,7 @@
 #include "libavutil/intreadwrite.h"
 #include "libavutil/imgutils.h"
 
-typedef struct {
+typedef struct FlipContext {
     int max_step[4];    ///< max pixel step for each plane, expressed as a number of bytes
     int hsub, vsub;     ///< chroma subsampling
 } FlipContext;
@@ -74,32 +74,40 @@ static int query_formats(AVFilterContext *ctx)
 
 static int config_props(AVFilterLink *inlink)
 {
-    FlipContext *flip = inlink->dst->priv;
-    const AVPixFmtDescriptor *pix_desc = &av_pix_fmt_descriptors[inlink->format];
+    FlipContext *s = inlink->dst->priv;
+    const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(inlink->format);
 
-    av_image_fill_max_pixsteps(flip->max_step, NULL, pix_desc);
-    flip->hsub = av_pix_fmt_descriptors[inlink->format].log2_chroma_w;
-    flip->vsub = av_pix_fmt_descriptors[inlink->format].log2_chroma_h;
+    av_image_fill_max_pixsteps(s->max_step, NULL, pix_desc);
+    s->hsub = pix_desc->log2_chroma_w;
+    s->vsub = pix_desc->log2_chroma_h;
 
     return 0;
 }
 
-static int draw_slice(AVFilterLink *inlink, int y, int h, int slice_dir)
+static int filter_frame(AVFilterLink *inlink, AVFrame *in)
 {
-    FlipContext *flip = inlink->dst->priv;
-    AVFilterBufferRef *inpic  = inlink->cur_buf;
-    AVFilterBufferRef *outpic = inlink->dst->outputs[0]->out_buf;
+    AVFilterContext *ctx  = inlink->dst;
+    FlipContext *s     = ctx->priv;
+    AVFilterLink *outlink = ctx->outputs[0];
+    AVFrame *out;
     uint8_t *inrow, *outrow;
     int i, j, plane, step, hsub, vsub;
 
-    for (plane = 0; plane < 4 && inpic->data[plane]; plane++) {
-        step = flip->max_step[plane];
-        hsub = (plane == 1 || plane == 2) ? flip->hsub : 0;
-        vsub = (plane == 1 || plane == 2) ? flip->vsub : 0;
+    out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
+    if (!out) {
+        av_frame_free(&in);
+        return AVERROR(ENOMEM);
+    }
+    av_frame_copy_props(out, in);
+
+    for (plane = 0; plane < 4 && in->data[plane]; plane++) {
+        step = s->max_step[plane];
+        hsub = (plane == 1 || plane == 2) ? s->hsub : 0;
+        vsub = (plane == 1 || plane == 2) ? s->vsub : 0;
 
-        outrow = outpic->data[plane] + (y>>vsub) * outpic->linesize[plane];
-        inrow  = inpic ->data[plane] + (y>>vsub) * inpic ->linesize[plane] + ((inlink->w >> hsub) - 1) * step;
-        for (i = 0; i < h>>vsub; i++) {
+        outrow = out->data[plane];
+        inrow  = in ->data[plane] + ((inlink->w >> hsub) - 1) * step;
+        for (i = 0; i < in->height >> vsub; i++) {
             switch (step) {
             case 1:
                 for (j = 0; j < (inlink->w >> hsub); j++)
@@ -140,21 +148,21 @@ static int draw_slice(AVFilterLink *inlink, int y, int h, int slice_dir)
                     memcpy(outrow + j*step, inrow - j*step, step);
             }
 
-            inrow  += inpic ->linesize[plane];
-            outrow += outpic->linesize[plane];
+            inrow  += in ->linesize[plane];
+            outrow += out->linesize[plane];
         }
     }
 
-    return ff_draw_slice(inlink->dst->outputs[0], y, h, slice_dir);
+    av_frame_free(&in);
+    return ff_filter_frame(outlink, out);
 }
 
 static const AVFilterPad avfilter_vf_hflip_inputs[] = {
     {
         .name         = "default",
         .type         = AVMEDIA_TYPE_VIDEO,
-        .draw_slice   = draw_slice,
+        .filter_frame = filter_frame,
         .config_props = config_props,
-        .min_perms    = AV_PERM_READ,
     },
     { NULL }
 };
@@ -167,7 +175,7 @@ static const AVFilterPad avfilter_vf_hflip_outputs[] = {
     { NULL }
 };
 
-AVFilter avfilter_vf_hflip = {
+AVFilter ff_vf_hflip = {
     .name      = "hflip",
     .description = NULL_IF_CONFIG_SMALL("Horizontally flip the input video."),
     .priv_size = sizeof(FlipContext),