Merge remote-tracking branch 'qatar/master'

[ffmpeg] / libavfilter / avfilter.c

diff --git a/libavfilter/avfilter.c b/libavfilter/avfilter.c
index 23bb26ccccc217e82be64979447c62992210ec17..d73698681edd627f45800f48fbb42db44bdbb11a 100644 (file)
--- a/libavfilter/avfilter.c
+++ b/libavfilter/avfilter.c
@@ -26,6 +26,7 @@
 #include "libavutil/audioconvert.h"
 #include "libavutil/imgutils.h"
 #include "libavutil/avassert.h"
+#include "libavutil/avstring.h"
 #include "avfilter.h"
 #include "internal.h"
 
@@ -44,6 +45,15 @@ const char *avfilter_license(void)
     return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
 }
 
+static void command_queue_pop(AVFilterContext *filter)
+{
+    AVFilterCommand *c= filter->command_queue;
+    av_freep(&c->arg);
+    av_freep(&c->command);
+    filter->command_queue= c->next;
+    av_free(c);
+}
+
 AVFilterBufferRef *avfilter_ref_buffer(AVFilterBufferRef *ref, int pmask)
 {
     AVFilterBufferRef *ret = av_malloc(sizeof(AVFilterBufferRef));
@@ -533,6 +543,7 @@ void avfilter_start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
     void (*start_frame)(AVFilterLink *, AVFilterBufferRef *);
     AVFilterPad *dst = link->dstpad;
     int perms = picref->perms;
+    AVFilterCommand *cmd= link->dst->command_queue;
 
     FF_DPRINTF_START(NULL, start_frame); ff_dlog_link(NULL, link, 0); av_dlog(NULL, " "); ff_dlog_ref(NULL, picref, 1);
 
@@ -555,6 +566,12 @@ void avfilter_start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
     else
         link->cur_buf = picref;
 
+    while(cmd && cmd->time <= picref->pts * av_q2d(link->time_base)){
+        avfilter_process_command(link->dst, cmd->command, cmd->arg, 0, 0, cmd->flags);
+        command_queue_pop(link->dst);
+        cmd= link->dst->command_queue;
+    }
+
     start_frame(link, link->cur_buf);
 }
 
@@ -616,6 +633,17 @@ void avfilter_draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
     draw_slice(link, y, h, slice_dir);
 }
 
+int avfilter_process_command(AVFilterContext *filter, const char *cmd, const char *arg, char *res, int res_len, int flags)
+{
+    if(!strcmp(cmd, "ping")){
+        av_strlcatf(res, res_len, "pong from:%s %s\n", filter->filter->name, filter->name);
+        return 0;
+    }else if(filter->filter->process_command) {
+        return filter->filter->process_command(filter, cmd, arg, res, res_len, flags);
+    }
+    return AVERROR(ENOSYS);
+}
+
 void avfilter_filter_samples(AVFilterLink *link, AVFilterBufferRef *samplesref)
 {
     void (*filter_samples)(AVFilterLink *, AVFilterBufferRef *);
@@ -803,6 +831,9 @@ void avfilter_free(AVFilterContext *filter)
     av_freep(&filter->inputs);
     av_freep(&filter->outputs);
     av_freep(&filter->priv);
+    while(filter->command_queue){
+        command_queue_pop(filter);
+    }
     av_free(filter);
 }