ijksdl: introduce SDL_Profiler

ijkmedia/ijkplayer/ff_ffplay.c

@@ -28,6 +28,7 @@
 #include "ff_fferror.h"
 #include "ff_ffpipeline.h"
 #include "ff_ffpipenode.h"
+#include "ff_ffplay_debug.h"
 #include "ijkmeta.h"
 
 // FIXME: 9 work around NDKr8e or gcc4.7 bug
@@ -43,17 +44,6 @@
 #define printf(...) ALOGD(__VA_ARGS__)
 #endif
 
-#define FFP_XPS_PERIOD (3)
-// #define FFP_SHOW_FPS
-// #define FFP_SHOW_VDPS
-// #define FFP_SHOW_AUDIO_DELAY
-// #define FFP_SHOW_DEMUX_CACHE
-// #define FFP_SHOW_BUF_POS
-// #define FFP_SHOW_PKT_RECYCLE
-
-// #define FFP_NOTIFY_BUF_TIME
-// #define FFP_NOTIFY_BUF_BYTES
-
 #define FFP_IO_STAT_STEP (50 * 1024)
 
 #ifdef FFP_SHOW_VDPS

ijkmedia/ijkplayer/ff_ffplay_debug.h

+/*
+ * ff_ffplaye_debug.h
+ *
+ * Copyright (c) 2015 Zhang Rui <bbcallen@gmail.com>
+ *
+ * This file is part of ijkPlayer.
+ *
+ * ijkPlayer is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * ijkPlayer is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with ijkPlayer; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef FFPLAY__FF_FFPLAY_DEBUG_H
+#define FFPLAY__FF_FFPLAY_DEBUG_H
+
+#define FFP_XPS_PERIOD (3)
+// #define FFP_SHOW_FPS
+// #define FFP_SHOW_VDPS
+// #define FFP_SHOW_AUDIO_DELAY
+// #define FFP_SHOW_DEMUX_CACHE
+// #define FFP_SHOW_BUF_POS
+// #define FFP_SHOW_PKT_RECYCLE
+
+// #define FFP_NOTIFY_BUF_TIME
+// #define FFP_NOTIFY_BUF_BYTES
+
+#endif

ijkmedia/ijksdl/ijksdl_timer.c

@@ -23,6 +23,7 @@
 
 #include "ijksdl_timer.h"
 #include <unistd.h>
+#include <string.h>
 #include <time.h>
 #include <sys/time.h>
 
@@ -76,3 +77,38 @@ Uint64 SDL_GetTickHR(void)
 #endif
     return (clock);
 }
+
+void SDL_ProfilerReset(SDL_Profiler* profiler, int max_sample)
+{
+    memset(profiler, 0, sizeof(SDL_Profiler));
+    if (max_sample < 0)
+        profiler->max_sample = 3;
+    else
+        profiler->max_sample = max_sample;
+}
+
+void SDL_ProfilerBegin(SDL_Profiler* profiler)
+{
+    profiler->begin_time = SDL_GetTickHR();
+}
+
+int64_t SDL_ProfilerEnd(SDL_Profiler* profiler)
+{
+    int64_t delta = SDL_GetTickHR();
+
+    if (profiler->max_sample > 0) {
+        profiler->total_elapsed += delta;
+        profiler->total_counter += 1;
+
+        if (profiler->total_counter > profiler->max_sample) {
+            profiler->total_elapsed -= profiler->average_elapsed;
+            profiler->total_counter -= 1;
+        }
+
+        if (profiler->total_counter > 0) {
+            profiler->average_elapsed = profiler->total_elapsed / profiler->total_counter;
+        }
+    }
+
+    return delta;
+}

ijkmedia/ijksdl/ijksdl_timer.h

@@ -30,4 +30,18 @@ void SDL_Delay(Uint32 ms);
 
 Uint64 SDL_GetTickHR(void);
 
+
+typedef struct SDL_Profiler {
+    int64_t total_elapsed;
+    int     total_counter;
+    int64_t average_elapsed;
+    int64_t begin_time;
+
+    int     max_sample;
+} SDL_Profiler;
+
+void    SDL_ProfilerReset(SDL_Profiler* profiler, int max_sample);
+void    SDL_ProfilerBegin(SDL_Profiler* profiler);
+int64_t SDL_ProfilerEnd(SDL_Profiler* profiler);
+
 #endif