[FFmpeg-devel] [PATCH 2/3] ffplay: get rid of the global cur_stream variable

[Marton Balint]

---
 ffplay.c |   64 +++++++++++++++++++++++++++++++------------------------------
 1 files changed, 33 insertions(+), 31 deletions(-)

diff --git a/ffplay.c b/ffplay.c
index 25d8325..018d95c 100644
--- a/ffplay.c
+++ b/ffplay.c
@@ -267,7 +267,6 @@ static char *vfilters = NULL;
 
 /* current context */
 static int is_full_screen;
-static VideoState *cur_stream;
 static int64_t audio_callback_time;
 
 static AVPacket flush_pkt;
@@ -887,11 +886,10 @@ static void stream_close(VideoState *is)
     av_free(is);
 }
 
-static void do_exit(void)
+static void do_exit(VideoState *is)
 {
-    if (cur_stream) {
-        stream_close(cur_stream);
-        cur_stream = NULL;
+    if (is) {
+        stream_close(is);
     }
     uninit_opts();
 #if CONFIG_AVFILTER
@@ -942,7 +940,7 @@ static int video_open(VideoState *is){
 #endif
     if (!screen) {
         fprintf(stderr, "SDL: could not set video mode - exiting\n");
-        do_exit();
+        do_exit(is);
     }
     if (!window_title)
         window_title = input_filename;
@@ -958,7 +956,7 @@ static int video_open(VideoState *is){
 static void video_display(VideoState *is)
 {
     if(!screen)
-        video_open(cur_stream);
+        video_open(is);
     if (is->audio_st && is->show_mode != SHOW_MODE_VIDEO)
         video_audio_display(is);
     else if (is->video_st)
@@ -1280,7 +1278,7 @@ static void alloc_picture(void *opaque)
         fprintf(stderr, "Error: the video system does not support an image\n"
                         "size of %dx%d pixels. Try using -lowres or -vf \"scale=w:h\"\n"
                         "to reduce the image size.\n", vp->width, vp->height );
-        do_exit();
+        do_exit(is);
     }
 
     SDL_LockMutex(is->pictq_mutex);
@@ -1794,8 +1792,8 @@ static int video_thread(void *arg)
         if (ret < 0)
             goto the_end;
 
-        if (cur_stream && cur_stream->step)
-            stream_toggle_pause(cur_stream);
+        if (is->step)
+            stream_toggle_pause(is);
     }
  the_end:
 #if CONFIG_AVFILTER
@@ -2496,7 +2494,7 @@ static int read_thread(void *arg)
             SDL_Delay(10);
             if(is->audioq.size + is->videoq.size + is->subtitleq.size ==0){
                 if(loop!=1 && (!loop || --loop)){
-                    stream_seek(cur_stream, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
+                    stream_seek(is, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
                 }else if(autoexit){
                     ret=AVERROR_EOF;
                     goto fail;
@@ -2641,10 +2639,10 @@ static void stream_cycle_channel(VideoState *is, int codec_type)
 }
 
 
-static void toggle_full_screen(void)
+static void toggle_full_screen(VideoState *is)
 {
     is_full_screen = !is_full_screen;
-    video_open(cur_stream);
+    video_open(is);
 }
 
 static void toggle_pause(VideoState *is)
@@ -2661,20 +2659,18 @@ static void step_to_next_frame(VideoState *is)
     is->step = 1;
 }
 
-static void toggle_audio_display(void)
+static void toggle_audio_display(VideoState *is)
 {
-    if (cur_stream) {
-        int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
-        cur_stream->show_mode = (cur_stream->show_mode + 1) % SHOW_MODE_NB;
-        fill_rectangle(screen,
-                    cur_stream->xleft, cur_stream->ytop, cur_stream->width, cur_stream->height,
-                    bgcolor);
-        SDL_UpdateRect(screen, cur_stream->xleft, cur_stream->ytop, cur_stream->width, cur_stream->height);
-    }
+    int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
+    is->show_mode = (is->show_mode + 1) % SHOW_MODE_NB;
+    fill_rectangle(screen,
+                is->xleft, is->ytop, is->width, is->height,
+                bgcolor);
+    SDL_UpdateRect(screen, is->xleft, is->ytop, is->width, is->height);
 }
 
 /* handle an event sent by the GUI */
-static void event_loop(void)
+static void event_loop(VideoState *cur_stream)
 {
     SDL_Event event;
     double incr, pos, frac;
@@ -2685,16 +2681,16 @@ static void event_loop(void)
         switch(event.type) {
         case SDL_KEYDOWN:
             if (exit_on_keydown) {
-                do_exit();
+                do_exit(cur_stream);
                 break;
             }
             switch(event.key.keysym.sym) {
             case SDLK_ESCAPE:
             case SDLK_q:
-                do_exit();
+                do_exit(cur_stream);
                 break;
             case SDLK_f:
-                toggle_full_screen();
+                toggle_full_screen(cur_stream);
                 break;
             case SDLK_p:
             case SDLK_SPACE:
@@ -2718,7 +2714,8 @@ static void event_loop(void)
                     stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
                 break;
             case SDLK_w:
-                toggle_audio_display();
+                if (cur_stream)
+                    toggle_audio_display(cur_stream);
                 break;
             case SDLK_LEFT:
                 incr = -10.0;
@@ -2759,7 +2756,7 @@ static void event_loop(void)
             break;
         case SDL_MOUSEBUTTONDOWN:
             if (exit_on_mousedown) {
-                do_exit();
+                do_exit(cur_stream);
                 break;
             }
         case SDL_MOUSEMOTION:
@@ -2806,7 +2803,7 @@ static void event_loop(void)
             break;
         case SDL_QUIT:
         case FF_QUIT_EVENT:
-            do_exit();
+            do_exit(cur_stream);
             break;
         case FF_ALLOC_EVENT:
             video_open(event.user.data1);
@@ -3007,6 +3004,7 @@ static int opt_help(const char *opt, const char *arg)
 int main(int argc, char **argv)
 {
     int flags;
+    VideoState *is;
 
     av_log_set_flags(AV_LOG_SKIP_REPEATED);
 
@@ -3063,9 +3061,13 @@ int main(int argc, char **argv)
     av_init_packet(&flush_pkt);
     flush_pkt.data= "FLUSH";
 
-    cur_stream = stream_open(input_filename, file_iformat);
+    is = stream_open(input_filename, file_iformat);
+    if (!is) {
+        fprintf(stderr, "Failed to initialize VideoState!\n");
+        do_exit(NULL);
+    }
 
-    event_loop();
+    event_loop(is);
 
     /* never returns */
 
-- 
1.7.3.4