avfilter: Constify all AVFilters

[ffmpeg] / libavfilter / vf_crop.c

diff --git a/libavfilter/vf_crop.c b/libavfilter/vf_crop.c
index d6b4feb5136e2cd9c0ca625ba8e06bf9567da998..9cc9ec28441ffe89672529a9d2cbb40db3d4a047 100644 (file)
--- a/libavfilter/vf_crop.c
+++ b/libavfilter/vf_crop.c
@@ -94,24 +94,11 @@ typedef struct CropContext {
 static int query_formats(AVFilterContext *ctx)
 {
     AVFilterFormats *formats = NULL;
-    int fmt, ret;
-
-    for (fmt = 0; av_pix_fmt_desc_get(fmt); fmt++) {
-        const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
-        if (desc->flags & AV_PIX_FMT_FLAG_BITSTREAM)
-            continue;
-        if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL)) {
-            // Not usable if there is any subsampling but the format is
-            // not planar (e.g. YUYV422).
-            if ((desc->log2_chroma_w || desc->log2_chroma_h) &&
-                !(desc->flags & AV_PIX_FMT_FLAG_PLANAR))
-                continue;
-        }
-        ret = ff_add_format(&formats, fmt);
-        if (ret < 0)
-            return ret;
-    }
+    int ret;
 
+    ret = ff_formats_pixdesc_filter(&formats, 0, AV_PIX_FMT_FLAG_BITSTREAM | FF_PIX_FMT_FLAG_SW_FLAT_SUB);
+    if (ret < 0)
+        return ret;
     return ff_set_common_formats(ctx, formats);
 }
 
@@ -174,10 +161,9 @@ static int config_input(AVFilterLink *link)
         s->vsub = pix_desc->log2_chroma_h;
     }
 
-    if ((ret = av_expr_parse_and_eval(&res, (expr = s->w_expr),
-                                      var_names, s->var_values,
-                                      NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
-        goto fail_expr;
+    av_expr_parse_and_eval(&res, (expr = s->w_expr),
+                           var_names, s->var_values,
+                           NULL, NULL, NULL, NULL, NULL, 0, ctx);
     s->var_values[VAR_OUT_W] = s->var_values[VAR_OW] = res;
     if ((ret = av_expr_parse_and_eval(&res, (expr = s->h_expr),
                                       var_names, s->var_values,
@@ -314,7 +300,7 @@ static int filter_frame(AVFilterLink *link, AVFrame *frame)
         frame->data[0] += s->y * frame->linesize[0];
         frame->data[0] += s->x * s->max_step[0];
 
-        if (!(desc->flags & AV_PIX_FMT_FLAG_PAL || desc->flags & FF_PSEUDOPAL)) {
+        if (!(desc->flags & AV_PIX_FMT_FLAG_PAL)) {
             for (i = 1; i < 3; i ++) {
                 if (frame->data[i]) {
                     frame->data[i] += (s->y >> s->vsub) * frame->linesize[i];
@@ -371,14 +357,15 @@ static int process_command(AVFilterContext *ctx, const char *cmd, const char *ar
 
 #define OFFSET(x) offsetof(CropContext, x)
 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
+#define TFLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
 
 static const AVOption crop_options[] = {
-    { "out_w",       "set the width crop area expression",   OFFSET(w_expr), AV_OPT_TYPE_STRING, {.str = "iw"}, CHAR_MIN, CHAR_MAX, FLAGS },
-    { "w",           "set the width crop area expression",   OFFSET(w_expr), AV_OPT_TYPE_STRING, {.str = "iw"}, CHAR_MIN, CHAR_MAX, FLAGS },
-    { "out_h",       "set the height crop area expression",  OFFSET(h_expr), AV_OPT_TYPE_STRING, {.str = "ih"}, CHAR_MIN, CHAR_MAX, FLAGS },
-    { "h",           "set the height crop area expression",  OFFSET(h_expr), AV_OPT_TYPE_STRING, {.str = "ih"}, CHAR_MIN, CHAR_MAX, FLAGS },
-    { "x",           "set the x crop area expression",       OFFSET(x_expr), AV_OPT_TYPE_STRING, {.str = "(in_w-out_w)/2"}, CHAR_MIN, CHAR_MAX, FLAGS },
-    { "y",           "set the y crop area expression",       OFFSET(y_expr), AV_OPT_TYPE_STRING, {.str = "(in_h-out_h)/2"}, CHAR_MIN, CHAR_MAX, FLAGS },
+    { "out_w",       "set the width crop area expression",   OFFSET(w_expr), AV_OPT_TYPE_STRING, {.str = "iw"}, 0, 0, TFLAGS },
+    { "w",           "set the width crop area expression",   OFFSET(w_expr), AV_OPT_TYPE_STRING, {.str = "iw"}, 0, 0, TFLAGS },
+    { "out_h",       "set the height crop area expression",  OFFSET(h_expr), AV_OPT_TYPE_STRING, {.str = "ih"}, 0, 0, TFLAGS },
+    { "h",           "set the height crop area expression",  OFFSET(h_expr), AV_OPT_TYPE_STRING, {.str = "ih"}, 0, 0, TFLAGS },
+    { "x",           "set the x crop area expression",       OFFSET(x_expr), AV_OPT_TYPE_STRING, {.str = "(in_w-out_w)/2"}, 0, 0, TFLAGS },
+    { "y",           "set the y crop area expression",       OFFSET(y_expr), AV_OPT_TYPE_STRING, {.str = "(in_h-out_h)/2"}, 0, 0, TFLAGS },
     { "keep_aspect", "keep aspect ratio",                    OFFSET(keep_aspect), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS },
     { "exact",       "do exact cropping",                    OFFSET(exact),  AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS },
     { NULL }
@@ -405,7 +392,7 @@ static const AVFilterPad avfilter_vf_crop_outputs[] = {
     { NULL }
 };
 
-AVFilter ff_vf_crop = {
+const AVFilter ff_vf_crop = {
     .name            = "crop",
     .description     = NULL_IF_CONFIG_SMALL("Crop the input video."),
     .priv_size       = sizeof(CropContext),