EVDA: Modify V4L APIs for 3.8 kernel

content/common/gpu/media/exynos_video_decode_accelerator.cc

Index: content/common/gpu/media/exynos_video_decode_accelerator.cc
diff --git a/content/common/gpu/media/exynos_video_decode_accelerator.cc b/content/common/gpu/media/exynos_video_decode_accelerator.cc
old mode 100644
new mode 100755
index 78aae604f0ff8681b63dd5758c8f1f6777bc882c..9c5a6dce366d7aa7c94093739f0194982fa84505
--- a/content/common/gpu/media/exynos_video_decode_accelerator.cc
+++ b/content/common/gpu/media/exynos_video_decode_accelerator.cc
@@ -1192,8 +1192,11 @@ void ExynosVideoDecodeAccelerator::DequeueMfc() {
   while (mfc_input_buffer_queued_count_ > 0) {
     DCHECK(mfc_input_streamon_);
     memset(&dqbuf, 0, sizeof(dqbuf));
+    memset(planes, 0, sizeof(planes));
     dqbuf.type   = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
     dqbuf.memory = V4L2_MEMORY_MMAP;
+    dqbuf.m.planes = planes;
+    dqbuf.length = 1;
     if (ioctl(mfc_fd_, VIDIOC_DQBUF, &dqbuf) != 0) {
       if (errno == EAGAIN) {
         // EAGAIN if we're just out of buffers to dequeue.
@@ -1325,11 +1328,15 @@ void ExynosVideoDecodeAccelerator::DequeueGsc() {
   // Dequeue completed GSC input (VIDEO_OUTPUT) buffers, and recycle to the free
   // list.  Also recycle the corresponding MFC output buffers at this time.
   struct v4l2_buffer dqbuf;
+  struct v4l2_plane planes[2];
   while (gsc_input_buffer_queued_count_ > 0) {
     DCHECK(gsc_input_streamon_);
     memset(&dqbuf, 0, sizeof(dqbuf));
+    memset(planes, 0, sizeof(planes));
     dqbuf.type   = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
     dqbuf.memory = V4L2_MEMORY_DMABUF;
+    dqbuf.m.planes = planes;
+    dqbuf.length = 2;
     if (ioctl(gsc_fd_, VIDIOC_DQBUF, &dqbuf) != 0) {
       if (errno == EAGAIN) {
         // EAGAIN if we're just out of buffers to dequeue.
@@ -1357,8 +1364,11 @@ void ExynosVideoDecodeAccelerator::DequeueGsc() {
   while (gsc_output_buffer_queued_count_ > 0) {
     DCHECK(gsc_output_streamon_);
     memset(&dqbuf, 0, sizeof(dqbuf));
+    memset(planes, 0, sizeof(planes));
     dqbuf.type   = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
     dqbuf.memory = V4L2_MEMORY_DMABUF;
+    dqbuf.m.planes = planes;
+    dqbuf.length = 1;
     if (ioctl(gsc_fd_, VIDIOC_DQBUF, &dqbuf) != 0) {
       if (errno == EAGAIN) {
         // EAGAIN if we're just out of buffers to dequeue.
@@ -2056,7 +2066,7 @@ bool ExynosVideoDecodeAccelerator::CreateGscInputBuffers() {
   IOCTL_OR_ERROR_RETURN_FALSE(gsc_fd_, VIDIOC_S_CTRL, &control);
 
   memset(&control, 0, sizeof(control));
-  control.id = V4L2_CID_GLOBAL_ALPHA;
+  control.id = V4L2_CID_ALPHA_COMPONENT;

[Pawel Osciak, 2013/05/21 16:00:32]

The driver in 3.4 doesn't handle this control, but the custom one that you are
changing it from (V4L2_CID_GLOBAL_ALPHA). This needs to be unified first.

   control.value = 255;
   IOCTL_OR_ERROR_RETURN_FALSE(gsc_fd_, VIDIOC_S_CTRL, &control);