better pause when displaying audio samples

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@1941 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

ffplay.c

@@ -94,6 +94,7 @@ typedef struct VideoState {
     int show_audio; /* if true, display audio samples */
     int16_t sample_array[SAMPLE_ARRAY_SIZE];
     int sample_array_index;
+    int last_i_start;
     
     double video_clock; /* current video clock value */
     int video_stream;
@@ -128,7 +129,7 @@ static int show_status;
 /* current context */
 static int is_full_screen;
 static VideoState *cur_stream;
-static int16_t audio_callback_time;
+static int64_t audio_callback_time;
 
 #define FF_ALLOC_EVENT   (SDL_USEREVENT)
 #define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
@@ -374,6 +375,7 @@ static void video_audio_display(VideoState *s)
     /* compute display index : center on currently output samples */
     channels = s->audio_st->codec.channels;
     nb_display_channels = channels;
+    if (!s->paused) {
         n = 2 * channels;
         delay = audio_write_get_buf_size(s);
         delay /= n;
@@ -389,6 +391,10 @@ static void video_audio_display(VideoState *s)
         if (delay < s->width)
             delay = s->width;
         i_start = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
+        s->last_i_start = i_start;
+    } else {
+        i_start = s->last_i_start;
+    }
 
     bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
     fill_rectangle(screen,