avfilter/vf_showinfo: add const to the AVFrameSideData instance

Signed-off-by: Limin Wang <lance.lmwang@gmail.com>

libavfilter/vf_showinfo.c

@@ -57,9 +57,9 @@ static const AVOption showinfo_options[] = {
 
 AVFILTER_DEFINE_CLASS(showinfo);
 
-static void dump_spherical(AVFilterContext *ctx, AVFrame *frame, AVFrameSideData *sd)
+static void dump_spherical(AVFilterContext *ctx, AVFrame *frame, const AVFrameSideData *sd)
 {
-    AVSphericalMapping *spherical = (AVSphericalMapping *)sd->data;
+    const AVSphericalMapping *spherical = (const AVSphericalMapping *)sd->data;
     double yaw, pitch, roll;
 
     av_log(ctx, AV_LOG_INFO, "spherical information: ");
@@ -96,9 +96,9 @@ static void dump_spherical(AVFilterContext *ctx, AVFrame *frame, AVFrameSideData
     }
 }
 
-static void dump_stereo3d(AVFilterContext *ctx, AVFrameSideData *sd)
+static void dump_stereo3d(AVFilterContext *ctx, const AVFrameSideData *sd)
 {
-    AVStereo3D *stereo;
+    const AVStereo3D *stereo;
 
     av_log(ctx, AV_LOG_INFO, "stereoscopic information: ");
     if (sd->size < sizeof(*stereo)) {
@@ -106,7 +106,7 @@ static void dump_stereo3d(AVFilterContext *ctx, AVFrameSideData *sd)
         return;
     }
 
-    stereo = (AVStereo3D *)sd->data;
+    stereo = (const AVStereo3D *)sd->data;
 
     av_log(ctx, AV_LOG_INFO, "type - %s", av_stereo3d_type_name(stereo->type));
 
@@ -114,7 +114,7 @@ static void dump_stereo3d(AVFilterContext *ctx, AVFrameSideData *sd)
         av_log(ctx, AV_LOG_INFO, " (inverted)");
 }
 
-static void dump_s12m_timecode(AVFilterContext *ctx, AVRational frame_rate, AVFrameSideData *sd)
+static void dump_s12m_timecode(AVFilterContext *ctx, AVRational frame_rate, const AVFrameSideData *sd)
 {
     const uint32_t *tc = (const uint32_t *)sd->data;
 
@@ -130,7 +130,7 @@ static void dump_s12m_timecode(AVFilterContext *ctx, AVRational frame_rate, AVFr
     }
 }
 
-static void dump_roi(AVFilterContext *ctx, AVFrameSideData *sd)
+static void dump_roi(AVFilterContext *ctx, const AVFrameSideData *sd)
 {
     int nb_rois;
     const AVRegionOfInterest *roi;
@@ -152,9 +152,9 @@ static void dump_roi(AVFilterContext *ctx, AVFrameSideData *sd)
     }
 }
 
-static void dump_mastering_display(AVFilterContext *ctx, AVFrameSideData *sd)
+static void dump_mastering_display(AVFilterContext *ctx, const AVFrameSideData *sd)
 {
-    AVMasteringDisplayMetadata *mastering_display;
+    const AVMasteringDisplayMetadata *mastering_display;
 
     av_log(ctx, AV_LOG_INFO, "mastering display: ");
     if (sd->size < sizeof(*mastering_display)) {
@@ -162,7 +162,7 @@ static void dump_mastering_display(AVFilterContext *ctx, AVFrameSideData *sd)
         return;
     }
 
-    mastering_display = (AVMasteringDisplayMetadata *)sd->data;
+    mastering_display = (const AVMasteringDisplayMetadata *)sd->data;
 
     av_log(ctx, AV_LOG_INFO, "has_primaries:%d has_luminance:%d "
            "r(%5.4f,%5.4f) g(%5.4f,%5.4f) b(%5.4f %5.4f) wp(%5.4f, %5.4f) "
@@ -178,18 +178,18 @@ static void dump_mastering_display(AVFilterContext *ctx, AVFrameSideData *sd)
            av_q2d(mastering_display->min_luminance), av_q2d(mastering_display->max_luminance));
 }
 
-static void dump_content_light_metadata(AVFilterContext *ctx, AVFrameSideData *sd)
+static void dump_content_light_metadata(AVFilterContext *ctx, const AVFrameSideData *sd)
 {
-    AVContentLightMetadata* metadata = (AVContentLightMetadata*)sd->data;
+    const AVContentLightMetadata *metadata = (const AVContentLightMetadata *)sd->data;
 
     av_log(ctx, AV_LOG_INFO, "Content Light Level information: "
            "MaxCLL=%d, MaxFALL=%d",
            metadata->MaxCLL, metadata->MaxFALL);
 }
 
-static void dump_video_enc_params(AVFilterContext *ctx, AVFrameSideData *sd)
+static void dump_video_enc_params(AVFilterContext *ctx, const AVFrameSideData *sd)
 {
-    AVVideoEncParams *par = (AVVideoEncParams*)sd->data;
+    const AVVideoEncParams *par = (const AVVideoEncParams *)sd->data;
     int plane, acdc;
 
     av_log(ctx, AV_LOG_INFO, "video encoding parameters: type %d; ", par->type);
@@ -206,10 +206,10 @@ static void dump_video_enc_params(AVFilterContext *ctx, AVFrameSideData *sd)
         av_log(ctx, AV_LOG_INFO, "%u blocks; ", par->nb_blocks);
 }
 
-static void dump_sei_unregistered_metadata(AVFilterContext *ctx, AVFrameSideData *sd)
+static void dump_sei_unregistered_metadata(AVFilterContext *ctx, const AVFrameSideData *sd)
 {
     const int uuid_size = 16;
-    uint8_t *user_data = sd->data;
+    const uint8_t *user_data = sd->data;
     int i;
 
     if (sd->size < uuid_size) {