modules: camera: Add Streams
Adds a Stream object, and configureStreams support in parsing the
provided stream_array. Streams are naively setup for sync-less software
painting.
Change-Id: Ibbd90e3e2c7fa984dd5d2dcbd4da7bf4dad43aa1
diff --git a/modules/camera/Stream.cpp b/modules/camera/Stream.cpp
new file mode 100644
index 0000000..08ae159
--- /dev/null
+++ b/modules/camera/Stream.cpp
@@ -0,0 +1,129 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <pthread.h>
+#include <hardware/camera3.h>
+#include <hardware/gralloc.h>
+#include <system/graphics.h>
+
+//#define LOG_NDEBUG 0
+#define LOG_TAG "Stream"
+#include <cutils/log.h>
+
+#define ATRACE_TAG (ATRACE_TAG_CAMERA | ATRACE_TAG_HAL)
+#include <cutils/trace.h>
+#include "ScopedTrace.h"
+
+#include "Stream.h"
+
+namespace default_camera_hal {
+
+Stream::Stream(int id, camera3_stream_t *s)
+ : mReuse(false),
+ mId(id),
+ mStream(s),
+ mType(s->stream_type),
+ mWidth(s->width),
+ mHeight(s->height),
+ mFormat(s->format),
+ mUsage(0),
+ mMaxBuffers(0),
+ mRegistered(false)
+{
+ // NULL (default) pthread mutex attributes
+ pthread_mutex_init(&mMutex, NULL);
+}
+
+Stream::~Stream()
+{
+ // TODO: unregister buffers from hw
+}
+
+void Stream::setUsage(uint32_t usage)
+{
+ pthread_mutex_lock(&mMutex);
+ if (usage != mUsage) {
+ mUsage = usage;
+ mRegistered = false;
+ // TODO: unregister buffers from hw
+ }
+ pthread_mutex_unlock(&mMutex);
+}
+
+void Stream::setMaxBuffers(uint32_t max_buffers)
+{
+ pthread_mutex_lock(&mMutex);
+ if (max_buffers != mMaxBuffers) {
+ mMaxBuffers = max_buffers;
+ mRegistered = false;
+ // TODO: unregister buffers from hw
+ }
+ pthread_mutex_unlock(&mMutex);
+}
+
+int Stream::getType()
+{
+ return mType;
+}
+
+bool Stream::isInputType()
+{
+ return mType & (CAMERA3_STREAM_INPUT | CAMERA3_STREAM_BIDIRECTIONAL);
+}
+
+bool Stream::isOutputType()
+{
+ return mType & (CAMERA3_STREAM_OUTPUT | CAMERA3_STREAM_BIDIRECTIONAL);
+}
+
+bool Stream::isValidReuseStream(int id, camera3_stream_t *s)
+{
+ if (id != mId) {
+ ALOGE("%s:%d: Invalid camera id for reuse. Got %d expect %d",
+ __func__, mId, id, mId);
+ return false;
+ }
+ if (s != mStream) {
+ ALOGE("%s:%d: Invalid stream handle for reuse. Got %p expect %p",
+ __func__, mId, s, mStream);
+ return false;
+ }
+ if (s->stream_type != mType) {
+ // TODO: prettyprint type string
+ ALOGE("%s:%d: Mismatched type in reused stream. Got %d expect %d",
+ __func__, mId, s->stream_type, mType);
+ return false;
+ }
+ if (s->format != mFormat) {
+ // TODO: prettyprint format string
+ ALOGE("%s:%d: Mismatched format in reused stream. Got %d expect %d",
+ __func__, mId, s->format, mFormat);
+ return false;
+ }
+ if (s->width != mWidth) {
+ ALOGE("%s:%d: Mismatched width in reused stream. Got %d expect %d",
+ __func__, mId, s->width, mWidth);
+ return false;
+ }
+ if (s->height != mHeight) {
+ ALOGE("%s:%d: Mismatched height in reused stream. Got %d expect %d",
+ __func__, mId, s->height, mHeight);
+ return false;
+ }
+ return true;
+}
+
+} // namespace default_camera_hal