commit 85f0f4569ef49f7acf4263ab6eb21b89a55d46c8
author Ashray Kulkarni <ashrayk@codeaurora.org> Fri Apr 10 16:02:34 2015 -0700
committer Chien-Yu Chen <cychen@google.com> Wed Sep 09 12:29:57 2015 -0700
tree 1c602e9d1e3e3a73494807407730245ec29703df
parent fc756c82140c35ec1a9e8b3167e3caa43f5bf3dd

mm-video-v4l2: venc: Update low power mode for 4K recording

- Enable low power mode for 4K recording
- Increasing min buff count for 4K session to 11 for power save mode.

Bug: 23505291
Change-Id: I6e35d373d7dc57f95f35d9a6acc45246552d21b2

mm-video-v4l2/vidc/venc/src/video_encoder_device_v4l2.cpp

diff --git a/mm-video-v4l2/vidc/venc/src/video_encoder_device_v4l2.cpp b/mm-video-v4l2/vidc/venc/src/video_encoder_device_v4l2.cpp
index 96fbbe6..7ad8ca2 100644
--- a/mm-video-v4l2/vidc/venc/src/video_encoder_device_v4l2.cpp
+++ b/mm-video-v4l2/vidc/venc/src/video_encoder_device_v4l2.cpp
@@ -1195,10 +1195,14 @@
         // Increase buffer-header count for metadata-mode on input port
         // to improve buffering and reduce bottlenecks in clients
         if (metadatamode && (bufreq.count < 9)) {
-            DEBUG_PRINT_LOW("FW returned buffer count = %d , overwriting with 16",
+            DEBUG_PRINT_LOW("FW returned buffer count = %d , overwriting with 9",
                 bufreq.count);
             bufreq.count = 9;
         }
+        if (m_sVenc_cfg.input_height * m_sVenc_cfg.input_width >= 3840*2160) {
+            DEBUG_PRINT_LOW("Increasing buffer count = %d to 11", bufreq.count);
+            bufreq.count = 11;
+        }
 
         bufreq.type=V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
         ret = ioctl(m_nDriver_fd,VIDIOC_REQBUFS, &bufreq);
@@ -1335,6 +1339,11 @@
 
                     DEBUG_PRINT_LOW("input: actual: %u, min: %u, count_req: %u",
                             (unsigned int)portDefn->nBufferCountActual, (unsigned int)m_sInput_buff_property.mincount, bufreq.count);
+                    if (m_sVenc_cfg.input_width * m_sVenc_cfg.input_height >= 3840 * 2160) {
+                        if (venc_set_perf_mode(V4L2_MPEG_VIDC_VIDEO_PERF_POWER_SAVE) == false) {
+                            DEBUG_PRINT_ERROR("ERROR: Failed to set Power save mode");
+                        }
+                    }
                 } else if (portDefn->nPortIndex == PORT_INDEX_OUT) {
                     m_sVenc_cfg.dvs_height = portDefn->format.video.nFrameHeight;
                     m_sVenc_cfg.dvs_width = portDefn->format.video.nFrameWidth;