lavfi: add const to the AVFilter parameter of avfilter_graph_create_filter()

[ffmpeg] / libavfilter / vf_showinfo.c

diff --git a/libavfilter/vf_showinfo.c b/libavfilter/vf_showinfo.c
index dbb67e91a2f62a904ae70290882f6ddda29f3a0f..04b436d4b0561a333a551ca46c60294471268df5 100644 (file)
--- a/libavfilter/vf_showinfo.c
+++ b/libavfilter/vf_showinfo.c
@@ -24,6 +24,7 @@
 
 #include "libavutil/adler32.h"
 #include "libavutil/imgutils.h"
+#include "libavutil/internal.h"
 #include "libavutil/pixdesc.h"
 #include "avfilter.h"
 #include "internal.h"
@@ -33,68 +34,70 @@ typedef struct {
     unsigned int frame;
 } ShowInfoContext;
 
-static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
-{
-    ShowInfoContext *showinfo = ctx->priv;
-    showinfo->frame = 0;
-    return 0;
-}
-
-static void end_frame(AVFilterLink *inlink)
+static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
 {
     AVFilterContext *ctx = inlink->dst;
     ShowInfoContext *showinfo = ctx->priv;
-    AVFilterBufferRef *picref = inlink->cur_buf;
+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
     uint32_t plane_checksum[4] = {0}, checksum = 0;
-    int i, plane, vsub = av_pix_fmt_descriptors[inlink->format].log2_chroma_h;
+    int i, plane, vsub = desc->log2_chroma_h;
 
-    for (plane = 0; picref->data[plane] && plane < 4; plane++) {
-        size_t linesize = av_image_get_linesize(picref->format, picref->video->w, plane);
-        uint8_t *data = picref->data[plane];
+    for (plane = 0; frame->data[plane] && plane < 4; plane++) {
+        size_t linesize = av_image_get_linesize(frame->format, frame->width, plane);
+        uint8_t *data = frame->data[plane];
         int h = plane == 1 || plane == 2 ? inlink->h >> vsub : inlink->h;
 
         for (i = 0; i < h; i++) {
             plane_checksum[plane] = av_adler32_update(plane_checksum[plane], data, linesize);
             checksum = av_adler32_update(checksum, data, linesize);
-            data += picref->linesize[plane];
+            data += frame->linesize[plane];
         }
     }
 
     av_log(ctx, AV_LOG_INFO,
-           "n:%d pts:%"PRId64" pts_time:%f pos:%"PRId64" "
+           "n:%d pts:%"PRId64" pts_time:%f "
            "fmt:%s sar:%d/%d s:%dx%d i:%c iskey:%d type:%c "
            "checksum:%u plane_checksum:[%u %u %u %u]\n",
            showinfo->frame,
-           picref->pts, picref->pts * av_q2d(inlink->time_base), picref->pos,
-           av_pix_fmt_descriptors[picref->format].name,
-           picref->video->pixel_aspect.num, picref->video->pixel_aspect.den,
-           picref->video->w, picref->video->h,
-           !picref->video->interlaced     ? 'P' :         /* Progressive  */
-           picref->video->top_field_first ? 'T' : 'B',    /* Top / Bottom */
-           picref->video->key_frame,
-           av_get_picture_type_char(picref->video->pict_type),
+           frame->pts, frame->pts * av_q2d(inlink->time_base),
+           desc->name,
+           frame->sample_aspect_ratio.num, frame->sample_aspect_ratio.den,
+           frame->width, frame->height,
+           !frame->interlaced_frame ? 'P' :         /* Progressive  */
+           frame->top_field_first   ? 'T' : 'B',    /* Top / Bottom */
+           frame->key_frame,
+           av_get_picture_type_char(frame->pict_type),
            checksum, plane_checksum[0], plane_checksum[1], plane_checksum[2], plane_checksum[3]);
 
     showinfo->frame++;
-    ff_end_frame(inlink->dst->outputs[0]);
+    return ff_filter_frame(inlink->dst->outputs[0], frame);
 }
 
+static const AVFilterPad avfilter_vf_showinfo_inputs[] = {
+    {
+        .name             = "default",
+        .type             = AVMEDIA_TYPE_VIDEO,
+        .get_video_buffer = ff_null_get_video_buffer,
+        .filter_frame     = filter_frame,
+    },
+    { NULL }
+};
+
+static const AVFilterPad avfilter_vf_showinfo_outputs[] = {
+    {
+        .name = "default",
+        .type = AVMEDIA_TYPE_VIDEO
+    },
+    { NULL }
+};
+
 AVFilter avfilter_vf_showinfo = {
     .name        = "showinfo",
     .description = NULL_IF_CONFIG_SMALL("Show textual information for each video frame."),
 
     .priv_size = sizeof(ShowInfoContext),
-    .init      = init,
 
-    .inputs    = (AVFilterPad[]) {{ .name = "default",
-                                    .type             = AVMEDIA_TYPE_VIDEO,
-                                    .get_video_buffer = ff_null_get_video_buffer,
-                                    .start_frame      = ff_null_start_frame,
-                                    .end_frame        = end_frame,
-                                    .min_perms        = AV_PERM_READ, },
-                                  { .name = NULL}},
+    .inputs    = avfilter_vf_showinfo_inputs,
 
-    .outputs   = (AVFilterPad[]) {{ .name             = "default",
-                                    .type             = AVMEDIA_TYPE_VIDEO },
-                                  { .name = NULL}},
+    .outputs   = avfilter_vf_showinfo_outputs,
 };