commit bbde3644a38f9b4590da352e8e1cf9dab0e8448d
author Tim Yao <tim.yao@amlogic.com> Fri Aug 14 23:49:04 2020 -0700
committer Gerrit Code Review <gituser@scgit2.amlogic.com> Fri Aug 14 23:49:04 2020 -0700
tree 45d8eb1725b80230d6538b5c941259f4e43d5f4a
parent 1c0d5aa10e5de5b61f292f0bdd846199a3844167
parent cdf13b691e1c83128192890de09548977c945fa9

Merge "avsync: support trick play"

avsync-lib/src/aml_avsync.h

diff --git a/avsync-lib/src/aml_avsync.h b/avsync-lib/src/aml_avsync.h
index 3ae1602..c9da796 100644
--- a/avsync-lib/src/aml_avsync.h
+++ b/avsync-lib/src/aml_avsync.h
@@ -106,4 +106,15 @@
  */
 void av_sync_update_vsync_interval(void *sync, pts90K vsync_interval);
 
+/* set playback speed
+ * Currently only work for VMASTER mode
+ * Params:
+ *   @speed: 1.0 is normal speed. 2.0 is 2x faster. 0.1 is 10x slower
+ *           Minimium speed is 0.001
+ *           Max speed is 100
+ * Return:
+ *   0 for OK, or error code
+ */
+int av_sync_set_speed(void *sync, float speed);
+
 #endif

avsync-lib/src/avsync.c

diff --git a/avsync-lib/src/avsync.c b/avsync-lib/src/avsync.c
index e5833b7..09af5d6 100644
--- a/avsync-lib/src/avsync.c
+++ b/avsync-lib/src/avsync.c
@@ -450,3 +450,19 @@
     detect_pattern(avsync->pattern_detector, AV_SYNC_FRAME_P22, cur_period, last_period);
     detect_pattern(avsync->pattern_detector, AV_SYNC_FRAME_P41, cur_period, last_period);
 }
+
+int av_sync_set_speed(void *sync, float speed)
+{
+    struct av_sync_session *avsync = (struct av_sync_session *)sync;
+
+    if (speed < 0.001f || speed > 100) {
+        log_error("wrong speed %f [0.0001, 100]", speed);
+        return -1;
+    }
+    if (avsync->mode != AV_SYNC_MODE_VMASTER) {
+        log_info("ignore set speed in mode %d", avsync->mode);
+        return 0;
+    }
+
+    return tsync_set_speed(avsync->session_id, speed);
+}

avsync-lib/src/tsync.c

diff --git a/avsync-lib/src/tsync.c b/avsync-lib/src/tsync.c
index f07b203..c29242d 100644
--- a/avsync-lib/src/tsync.c
+++ b/avsync-lib/src/tsync.c
@@ -31,6 +31,7 @@
 #define AMSTREAM_IOC_SET_VSYNC_UPINT _IOW((_A_M), 0x89, int)
 #define AMSTREAM_IOC_SET_VIDEOPEEK   _IOW(_A_M, 0xbf, unsigned int)
 #define AMSTREAM_IOC_SET_NO_VIDEO_STOP _IOW(_A_M, 0xf5, unsigned int)
+#define AMSTREAM_IOC_SET_VSYNC_SLOW_FACTOR _IOW((_A_M), 0x8b, int)
 
 static int config_sys_node(const char* path, const char* value)
 {
@@ -186,3 +187,8 @@
     log_info("no_video_stop %d", disable);
     return video_device_ioctl(AMSTREAM_IOC_SET_NO_VIDEO_STOP, disable);
 }
+
+int tsync_set_speed(int session, float speed)
+{
+    return video_device_ioctl(AMSTREAM_IOC_SET_VSYNC_SLOW_FACTOR, 1000000 * speed);
+}

avsync-lib/src/tsync.h

diff --git a/avsync-lib/src/tsync.h b/avsync-lib/src/tsync.h
index c1a6eeb..8975830 100644
--- a/avsync-lib/src/tsync.h
+++ b/avsync-lib/src/tsync.h
@@ -27,5 +27,6 @@
 int tsync_set_video_peek_mode(int session);
 int tsync_set_video_sync_thres(int session, bool enable);
 int tsync_disable_video_stop_event(int session, bool disable);
+int tsync_set_speed(int session, float speed);
 
 #endif