From 6d3f9920349986e9492c577243bf2b3b202bf3d7 Mon Sep 17 00:00:00 2001
From: Kamil Trzcinski <ayufan@ayufan.eu>
Date: Wed, 6 Apr 2022 16:02:47 +0200
Subject: [PATCH] Add `start decoder`

---
 cmd/camera_decoder.c |  7 +++++--
 hw/device.c          | 14 ++++++++++++++
 hw/device.h          |  1 +
 3 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/cmd/camera_decoder.c b/cmd/camera_decoder.c
index c0f3d95..b9ab125 100644
--- a/cmd/camera_decoder.c
+++ b/cmd/camera_decoder.c
@@ -11,8 +11,7 @@
 int camera_configure_decoder(camera_t *camera)
 {
   buffer_list_t *src = camera->camera->capture_list;
-
-  device_video_force_key(camera->decoder);
+  device_video_force_key(camera->camera);
 
   camera->decoder = device_open("DECODER", "/dev/video10");
 
@@ -21,6 +20,10 @@ int camera_configure_decoder(camera_t *camera)
     return -1;
   }
 
+  if (device_set_decoder_start(camera->decoder, true) < 0) {
+    return -1;
+  }
+
   src = camera->decoder->capture_list;
 
   if (camera->options.format != V4L2_PIX_FMT_MJPEG && camera->options.format != V4L2_PIX_FMT_JPEG) {
diff --git a/hw/device.c b/hw/device.c
index 386c4e4..629d9e3 100644
--- a/hw/device.c
+++ b/hw/device.c
@@ -166,6 +166,20 @@ int device_set_stream(device_t *dev, bool do_on)
   return 0;
 }
 
+int device_set_decoder_start(device_t *dev, bool do_on)
+{
+  struct v4l2_decoder_cmd cmd = {0};
+
+  cmd.cmd = do_on ? V4L2_DEC_CMD_START : V4L2_DEC_CMD_STOP;
+
+  E_LOG_DEBUG(dev, "Setting decoder state %s...", do_on ? "Start" : "Stop");
+  E_XIOCTL(dev, dev->fd, VIDIOC_DECODER_CMD, &cmd, "Cannot set decoder state");
+  return 0;
+
+error:
+  return -1;
+}
+
 int device_consume_event(device_t *dev)
 {
 	struct v4l2_event event;
diff --git a/hw/device.h b/hw/device.h
index 4049d76..332f459 100644
--- a/hw/device.h
+++ b/hw/device.h
@@ -28,6 +28,7 @@ int device_open_buffer_list_capture(device_t *dev, struct buffer_list_s *output_
 int device_consume_event(device_t *device);
 
 int device_set_stream(device_t *dev, bool do_on);
+int device_set_decoder_start(device_t *dev, bool do_on);
 int device_video_force_key(device_t *dev);
 int device_set_pad_format(device_t *device, unsigned width, unsigned height, unsigned format);
 int device_set_option(device_t *dev, const char *name, uint32_t id, int32_t value);