Rework links handling to create a complete pipeline

device/camera/camera_output.c

@@ -0,0 +1,78 @@
+#include "camera.h"
+
+#include "device/buffer.h"
+#include "device/buffer_list.h"
+#include "device/device.h"
+#include "device/links.h"
+#include "opts/log.h"
+#include "opts/fourcc.h"
+#include "device/buffer_list.h"
+#include "http/http.h"
+
+static const char *jpeg_names[2] = {
+  "JPEG",
+  "JPEG-LOW"
+};
+
+static link_callbacks_t jpeg_callbacks[2] = {
+  { http_jpeg_capture, http_jpeg_needs_buffer },
+  { http_jpeg_lowres_capture, http_jpeg_needs_buffer }
+};
+
+static const char *h264_names[2] = {
+  "H264",
+  "H264-LOW"
+};
+
+static link_callbacks_t h264_callbacks[2] = {
+  { http_h264_capture, http_h264_needs_buffer },
+  { http_h264_lowres_capture, http_h264_needs_buffer }
+};
+
+static int camera_configure_h264_output(camera_t *camera, buffer_list_t *src_capture, int res)
+{
+  if (src_capture->fmt.format == V4L2_PIX_FMT_H264) {
+    camera_capture_set_callbacks(camera, src_capture, h264_callbacks[res]);
+    return 0;
+  }
+
+  camera->codec_h264[res] = device_v4l2_open(h264_names[res], "/dev/video11");
+
+  buffer_list_t *output = device_open_buffer_list_output(camera->codec_h264[res], src_capture);
+  buffer_list_t *capture = device_open_buffer_list_capture(camera->codec_h264[res], output, 1.0, V4L2_PIX_FMT_H264, true);
+
+  if (!capture) {
+    return -1;
+  }
+
+  camera_capture_add_output(camera, src_capture, output);
+  camera_capture_set_callbacks(camera, capture, h264_callbacks[res]);
+  return 0;
+}
+
+static int camera_configure_jpeg_output(camera_t *camera, buffer_list_t *src_capture, int res)
+{
+  if (src_capture->fmt.format == V4L2_PIX_FMT_MJPEG || src_capture->fmt.format == V4L2_PIX_FMT_JPEG) {
+    camera_capture_set_callbacks(camera, src_capture, jpeg_callbacks[res]);
+    return 0;
+  }
+
+  camera->codec_jpeg[res] = device_v4l2_open(jpeg_names[res], "/dev/video31");
+
+  buffer_list_t *output = device_open_buffer_list_output(camera->codec_jpeg[res], src_capture);
+  buffer_list_t *capture = device_open_buffer_list_capture(camera->codec_jpeg[res], output, 1.0, V4L2_PIX_FMT_JPEG, true);
+
+  if (!capture) {
+    return -1;
+  }
+
+  camera_capture_add_output(camera, src_capture, output);
+  camera_capture_set_callbacks(camera, capture, jpeg_callbacks[res]);
+  return 0;
+}
+
+int camera_configure_output(camera_t *camera, buffer_list_t *src_capture, int res)
+{
+  return camera_configure_h264_output(camera, src_capture, res) == 0 &&
+    camera_configure_jpeg_output(camera, src_capture, res) == 0;
+}