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-rw-r--r--media/libstagefright/filters/Android.mk32
-rw-r--r--media/libstagefright/filters/ColorConvert.cpp111
-rw-r--r--media/libstagefright/filters/ColorConvert.h43
-rw-r--r--media/libstagefright/filters/GraphicBufferListener.cpp154
-rw-r--r--media/libstagefright/filters/GraphicBufferListener.h70
-rw-r--r--media/libstagefright/filters/IntrinsicBlurFilter.cpp99
-rw-r--r--media/libstagefright/filters/IntrinsicBlurFilter.h50
-rw-r--r--media/libstagefright/filters/MediaFilter.cpp816
-rw-r--r--media/libstagefright/filters/RSFilter.cpp96
-rw-r--r--media/libstagefright/filters/RSFilter.h53
-rw-r--r--media/libstagefright/filters/SaturationFilter.cpp99
-rw-r--r--media/libstagefright/filters/SaturationFilter.h52
-rw-r--r--media/libstagefright/filters/SimpleFilter.cpp39
-rw-r--r--media/libstagefright/filters/SimpleFilter.h52
-rw-r--r--media/libstagefright/filters/ZeroFilter.cpp57
-rw-r--r--media/libstagefright/filters/ZeroFilter.h43
-rw-r--r--media/libstagefright/filters/saturation.rs40
-rw-r--r--media/libstagefright/filters/saturationARGB.rs40
18 files changed, 1946 insertions, 0 deletions
diff --git a/media/libstagefright/filters/Android.mk b/media/libstagefright/filters/Android.mk
new file mode 100644
index 0000000..5e895e1
--- /dev/null
+++ b/media/libstagefright/filters/Android.mk
@@ -0,0 +1,32 @@
+LOCAL_PATH:= $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_NDK_STL_VARIANT := stlport_static
+
+LOCAL_SRC_FILES := \
+ ColorConvert.cpp \
+ GraphicBufferListener.cpp \
+ IntrinsicBlurFilter.cpp \
+ MediaFilter.cpp \
+ RSFilter.cpp \
+ SaturationFilter.cpp \
+ saturationARGB.rs \
+ SimpleFilter.cpp \
+ ZeroFilter.cpp
+
+LOCAL_C_INCLUDES := \
+ $(TOP)/bionic \
+ $(TOP)/bionic/libstdc++/include \
+ $(TOP)/external/stlport/stlport \
+ $(TOP)/frameworks/native/include/media/openmax \
+ $(TOP)/frameworks/rs/cpp \
+ $(TOP)/frameworks/rs \
+
+intermediates := $(call intermediates-dir-for,STATIC_LIBRARIES,libRS,TARGET,)
+LOCAL_C_INCLUDES += $(intermediates)
+
+LOCAL_CFLAGS += -Wno-multichar
+
+LOCAL_MODULE:= libstagefright_mediafilter
+
+include $(BUILD_STATIC_LIBRARY)
diff --git a/media/libstagefright/filters/ColorConvert.cpp b/media/libstagefright/filters/ColorConvert.cpp
new file mode 100644
index 0000000..a5039f9
--- /dev/null
+++ b/media/libstagefright/filters/ColorConvert.cpp
@@ -0,0 +1,111 @@
+/*
+ * Copyright (C) 2014 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 "ColorConvert.h"
+
+#ifndef max
+#define max(a,b) ((a) > (b) ? (a) : (b))
+#endif
+#ifndef min
+#define min(a,b) ((a) < (b) ? (a) : (b))
+#endif
+
+namespace android {
+
+void YUVToRGB(
+ int32_t y, int32_t u, int32_t v,
+ int32_t* r, int32_t* g, int32_t* b) {
+ y -= 16;
+ u -= 128;
+ v -= 128;
+
+ *b = 1192 * y + 2066 * u;
+ *g = 1192 * y - 833 * v - 400 * u;
+ *r = 1192 * y + 1634 * v;
+
+ *r = min(262143, max(0, *r));
+ *g = min(262143, max(0, *g));
+ *b = min(262143, max(0, *b));
+
+ *r >>= 10;
+ *g >>= 10;
+ *b >>= 10;
+}
+
+void convertYUV420spToARGB(
+ uint8_t *pY, uint8_t *pUV, int32_t width, int32_t height,
+ uint8_t *dest) {
+ const int32_t bytes_per_pixel = 2;
+
+ for (int32_t i = 0; i < height; i++) {
+ for (int32_t j = 0; j < width; j++) {
+ int32_t y = *(pY + i * width + j);
+ int32_t u = *(pUV + (i/2) * width + bytes_per_pixel * (j/2));
+ int32_t v = *(pUV + (i/2) * width + bytes_per_pixel * (j/2) + 1);
+
+ int32_t r, g, b;
+ YUVToRGB(y, u, v, &r, &g, &b);
+
+ *dest++ = 0xFF;
+ *dest++ = r;
+ *dest++ = g;
+ *dest++ = b;
+ }
+ }
+}
+
+void convertYUV420spToRGB888(
+ uint8_t *pY, uint8_t *pUV, int32_t width, int32_t height,
+ uint8_t *dest) {
+ const int32_t bytes_per_pixel = 2;
+
+ for (int32_t i = 0; i < height; i++) {
+ for (int32_t j = 0; j < width; j++) {
+ int32_t y = *(pY + i * width + j);
+ int32_t u = *(pUV + (i/2) * width + bytes_per_pixel * (j/2));
+ int32_t v = *(pUV + (i/2) * width + bytes_per_pixel * (j/2) + 1);
+
+ int32_t r, g, b;
+ YUVToRGB(y, u, v, &r, &g, &b);
+
+ *dest++ = r;
+ *dest++ = g;
+ *dest++ = b;
+ }
+ }
+}
+
+// HACK - not even slightly optimized
+// TODO: remove when RGBA support is added to SoftwareRenderer
+void convertRGBAToARGB(
+ uint8_t *src, int32_t width, int32_t height, uint32_t stride,
+ uint8_t *dest) {
+ for (size_t i = 0; i < height; ++i) {
+ for (size_t j = 0; j < width; ++j) {
+ uint8_t r = *src++;
+ uint8_t g = *src++;
+ uint8_t b = *src++;
+ uint8_t a = *src++;
+ *dest++ = a;
+ *dest++ = r;
+ *dest++ = g;
+ *dest++ = b;
+ }
+ src += (stride - width) * 4;
+ }
+}
+
+} // namespace android
diff --git a/media/libstagefright/filters/ColorConvert.h b/media/libstagefright/filters/ColorConvert.h
new file mode 100644
index 0000000..13faa02
--- /dev/null
+++ b/media/libstagefright/filters/ColorConvert.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2014 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.
+ */
+
+#ifndef COLOR_CONVERT_H_
+#define COLOR_CONVERT_H_
+
+#include <inttypes.h>
+
+namespace android {
+
+void YUVToRGB(
+ int32_t y, int32_t u, int32_t v,
+ int32_t* r, int32_t* g, int32_t* b);
+
+void convertYUV420spToARGB(
+ uint8_t *pY, uint8_t *pUV, int32_t width, int32_t height,
+ uint8_t *dest);
+
+void convertYUV420spToRGB888(
+ uint8_t *pY, uint8_t *pUV, int32_t width, int32_t height,
+ uint8_t *dest);
+
+// TODO: remove when RGBA support is added to SoftwareRenderer
+void convertRGBAToARGB(
+ uint8_t *src, int32_t width, int32_t height, uint32_t stride,
+ uint8_t *dest);
+
+} // namespace android
+
+#endif // COLOR_CONVERT_H_
diff --git a/media/libstagefright/filters/GraphicBufferListener.cpp b/media/libstagefright/filters/GraphicBufferListener.cpp
new file mode 100644
index 0000000..e493137
--- /dev/null
+++ b/media/libstagefright/filters/GraphicBufferListener.cpp
@@ -0,0 +1,154 @@
+/*
+ * Copyright (C) 2014 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.
+ */
+
+//#define LOG_NDEBUG 0
+#define LOG_TAG "GraphicBufferListener"
+
+#include <media/stagefright/foundation/ADebug.h>
+#include <media/stagefright/foundation/AMessage.h>
+#include <media/stagefright/MediaErrors.h>
+
+#include "GraphicBufferListener.h"
+
+namespace android {
+
+status_t GraphicBufferListener::init(
+ const sp<AMessage> &notify,
+ size_t bufferWidth, size_t bufferHeight, size_t bufferCount) {
+ mNotify = notify;
+
+ String8 name("GraphicBufferListener");
+ BufferQueue::createBufferQueue(&mProducer, &mConsumer);
+ mConsumer->setConsumerName(name);
+ mConsumer->setDefaultBufferSize(bufferWidth, bufferHeight);
+ mConsumer->setConsumerUsageBits(GRALLOC_USAGE_SW_READ_OFTEN);
+
+ status_t err = mConsumer->setMaxAcquiredBufferCount(bufferCount);
+ if (err != NO_ERROR) {
+ ALOGE("Unable to set BQ max acquired buffer count to %u: %d",
+ bufferCount, err);
+ return err;
+ }
+
+ wp<BufferQueue::ConsumerListener> listener =
+ static_cast<BufferQueue::ConsumerListener*>(this);
+ sp<BufferQueue::ProxyConsumerListener> proxy =
+ new BufferQueue::ProxyConsumerListener(listener);
+
+ err = mConsumer->consumerConnect(proxy, false);
+ if (err != NO_ERROR) {
+ ALOGE("Error connecting to BufferQueue: %s (%d)",
+ strerror(-err), err);
+ return err;
+ }
+
+ ALOGV("init() successful.");
+
+ return OK;
+}
+
+void GraphicBufferListener::onFrameAvailable() {
+ ALOGV("onFrameAvailable() called");
+
+ {
+ Mutex::Autolock autoLock(mMutex);
+ mNumFramesAvailable++;
+ }
+
+ sp<AMessage> notify = mNotify->dup();
+ mNotify->setWhat(kWhatFrameAvailable);
+ mNotify->post();
+}
+
+void GraphicBufferListener::onBuffersReleased() {
+ ALOGV("onBuffersReleased() called");
+ // nothing to do
+}
+
+void GraphicBufferListener::onSidebandStreamChanged() {
+ ALOGW("GraphicBufferListener cannot consume sideband streams.");
+ // nothing to do
+}
+
+BufferQueue::BufferItem GraphicBufferListener::getBufferItem() {
+ BufferQueue::BufferItem item;
+
+ {
+ Mutex::Autolock autoLock(mMutex);
+ if (mNumFramesAvailable <= 0) {
+ ALOGE("getBuffer() called with no frames available");
+ return item;
+ }
+ mNumFramesAvailable--;
+ }
+
+ status_t err = mConsumer->acquireBuffer(&item, 0);
+ if (err == BufferQueue::NO_BUFFER_AVAILABLE) {
+ // shouldn't happen, since we track num frames available
+ ALOGE("frame was not available");
+ item.mBuf = -1;
+ return item;
+ } else if (err != OK) {
+ ALOGE("acquireBuffer returned err=%d", err);
+ item.mBuf = -1;
+ return item;
+ }
+
+ // Wait for it to become available.
+ err = item.mFence->waitForever("GraphicBufferListener::getBufferItem");
+ if (err != OK) {
+ ALOGW("failed to wait for buffer fence: %d", err);
+ // keep going
+ }
+
+ // If this is the first time we're seeing this buffer, add it to our
+ // slot table.
+ if (item.mGraphicBuffer != NULL) {
+ ALOGV("setting mBufferSlot %d", item.mBuf);
+ mBufferSlot[item.mBuf] = item.mGraphicBuffer;
+ }
+
+ return item;
+}
+
+sp<GraphicBuffer> GraphicBufferListener::getBuffer(
+ BufferQueue::BufferItem item) {
+ sp<GraphicBuffer> buf;
+ if (item.mBuf < 0 || item.mBuf >= BufferQueue::NUM_BUFFER_SLOTS) {
+ ALOGE("getBuffer() received invalid BufferItem: mBuf==%d", item.mBuf);
+ return buf;
+ }
+
+ buf = mBufferSlot[item.mBuf];
+ CHECK(buf.get() != NULL);
+
+ return buf;
+}
+
+status_t GraphicBufferListener::releaseBuffer(
+ BufferQueue::BufferItem item) {
+ if (item.mBuf < 0 || item.mBuf >= BufferQueue::NUM_BUFFER_SLOTS) {
+ ALOGE("getBuffer() received invalid BufferItem: mBuf==%d", item.mBuf);
+ return ERROR_OUT_OF_RANGE;
+ }
+
+ mConsumer->releaseBuffer(item.mBuf, item.mFrameNumber,
+ EGL_NO_DISPLAY, EGL_NO_SYNC_KHR, Fence::NO_FENCE);
+
+ return OK;
+}
+
+} // namespace android
diff --git a/media/libstagefright/filters/GraphicBufferListener.h b/media/libstagefright/filters/GraphicBufferListener.h
new file mode 100644
index 0000000..aefac0d
--- /dev/null
+++ b/media/libstagefright/filters/GraphicBufferListener.h
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2014 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.
+ */
+
+#ifndef GRAPHIC_BUFFER_LISTENER_H_
+#define GRAPHIC_BUFFER_LISTENER_H_
+
+#include <gui/BufferQueue.h>
+
+namespace android {
+
+struct AMessage;
+
+struct GraphicBufferListener : public BufferQueue::ConsumerListener {
+public:
+ GraphicBufferListener() {};
+
+ status_t init(
+ const sp<AMessage> &notify,
+ size_t bufferWidth, size_t bufferHeight, size_t bufferCount);
+
+ virtual void onFrameAvailable();
+ virtual void onBuffersReleased();
+ virtual void onSidebandStreamChanged();
+
+ // Returns the handle to the producer side of the BufferQueue. Buffers
+ // queued on this will be received by GraphicBufferListener.
+ sp<IGraphicBufferProducer> getIGraphicBufferProducer() const {
+ return mProducer;
+ }
+
+ BufferQueue::BufferItem getBufferItem();
+ sp<GraphicBuffer> getBuffer(BufferQueue::BufferItem item);
+ status_t releaseBuffer(BufferQueue::BufferItem item);
+
+ enum {
+ kWhatFrameAvailable = 'frav',
+ };
+
+private:
+ sp<AMessage> mNotify;
+ size_t mNumFramesAvailable;
+
+ mutable Mutex mMutex;
+
+ // Our BufferQueue interfaces. mProducer is passed to the producer through
+ // getIGraphicBufferProducer, and mConsumer is used internally to retrieve
+ // the buffers queued by the producer.
+ sp<IGraphicBufferProducer> mProducer;
+ sp<IGraphicBufferConsumer> mConsumer;
+
+ // Cache of GraphicBuffers from the buffer queue.
+ sp<GraphicBuffer> mBufferSlot[BufferQueue::NUM_BUFFER_SLOTS];
+};
+
+} // namespace android
+
+#endif // GRAPHIC_BUFFER_LISTENER_H
diff --git a/media/libstagefright/filters/IntrinsicBlurFilter.cpp b/media/libstagefright/filters/IntrinsicBlurFilter.cpp
new file mode 100644
index 0000000..cbcf699
--- /dev/null
+++ b/media/libstagefright/filters/IntrinsicBlurFilter.cpp
@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2014 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.
+ */
+
+//#define LOG_NDEBUG 0
+#define LOG_TAG "IntrinsicBlurFilter"
+
+#include <utils/Log.h>
+
+#include <media/stagefright/foundation/ABuffer.h>
+#include <media/stagefright/foundation/ADebug.h>
+#include <media/stagefright/foundation/AMessage.h>
+
+#include "IntrinsicBlurFilter.h"
+
+namespace android {
+
+status_t IntrinsicBlurFilter::configure(const sp<AMessage> &msg) {
+ status_t err = SimpleFilter::configure(msg);
+ if (err != OK) {
+ return err;
+ }
+
+ if (!msg->findString("cacheDir", &mCacheDir)) {
+ ALOGE("Failed to find cache directory in config message.");
+ return NAME_NOT_FOUND;
+ }
+
+ return OK;
+}
+
+status_t IntrinsicBlurFilter::start() {
+ // TODO: use a single RS context object for entire application
+ mRS = new RSC::RS();
+
+ if (!mRS->init(mCacheDir.c_str())) {
+ ALOGE("Failed to initialize RenderScript context.");
+ return NO_INIT;
+ }
+
+ // 32-bit elements for ARGB8888
+ RSC::sp<const RSC::Element> e = RSC::Element::U8_4(mRS);
+
+ RSC::Type::Builder tb(mRS, e);
+ tb.setX(mWidth);
+ tb.setY(mHeight);
+ RSC::sp<const RSC::Type> t = tb.create();
+
+ mAllocIn = RSC::Allocation::createTyped(mRS, t);
+ mAllocOut = RSC::Allocation::createTyped(mRS, t);
+
+ mBlur = RSC::ScriptIntrinsicBlur::create(mRS, e);
+ mBlur->setRadius(mBlurRadius);
+ mBlur->setInput(mAllocIn);
+
+ return OK;
+}
+
+void IntrinsicBlurFilter::reset() {
+ mBlur.clear();
+ mAllocOut.clear();
+ mAllocIn.clear();
+ mRS.clear();
+}
+
+status_t IntrinsicBlurFilter::setParameters(const sp<AMessage> &msg) {
+ sp<AMessage> params;
+ CHECK(msg->findMessage("params", &params));
+
+ float blurRadius;
+ if (params->findFloat("blur-radius", &blurRadius)) {
+ mBlurRadius = blurRadius;
+ }
+
+ return OK;
+}
+
+status_t IntrinsicBlurFilter::processBuffers(
+ const sp<ABuffer> &srcBuffer, const sp<ABuffer> &outBuffer) {
+ mAllocIn->copy1DRangeFrom(0, mWidth * mHeight, srcBuffer->data());
+ mBlur->forEach(mAllocOut);
+ mAllocOut->copy1DRangeTo(0, mWidth * mHeight, outBuffer->data());
+
+ return OK;
+}
+
+} // namespace android
diff --git a/media/libstagefright/filters/IntrinsicBlurFilter.h b/media/libstagefright/filters/IntrinsicBlurFilter.h
new file mode 100644
index 0000000..4707ab7
--- /dev/null
+++ b/media/libstagefright/filters/IntrinsicBlurFilter.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2014 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.
+ */
+
+#ifndef INTRINSIC_BLUR_FILTER_H_
+#define INTRINSIC_BLUR_FILTER_H_
+
+#include "RenderScript.h"
+#include "SimpleFilter.h"
+
+namespace android {
+
+struct IntrinsicBlurFilter : public SimpleFilter {
+public:
+ IntrinsicBlurFilter() : mBlurRadius(1.f) {};
+
+ virtual status_t configure(const sp<AMessage> &msg);
+ virtual status_t start();
+ virtual void reset();
+ virtual status_t setParameters(const sp<AMessage> &msg);
+ virtual status_t processBuffers(
+ const sp<ABuffer> &srcBuffer, const sp<ABuffer> &outBuffer);
+
+protected:
+ virtual ~IntrinsicBlurFilter() {};
+
+private:
+ AString mCacheDir;
+ RSC::sp<RSC::RS> mRS;
+ RSC::sp<RSC::Allocation> mAllocIn;
+ RSC::sp<RSC::Allocation> mAllocOut;
+ RSC::sp<RSC::ScriptIntrinsicBlur> mBlur;
+ float mBlurRadius;
+};
+
+} // namespace android
+
+#endif // INTRINSIC_BLUR_FILTER_H_
diff --git a/media/libstagefright/filters/MediaFilter.cpp b/media/libstagefright/filters/MediaFilter.cpp
new file mode 100644
index 0000000..c5289b6
--- /dev/null
+++ b/media/libstagefright/filters/MediaFilter.cpp
@@ -0,0 +1,816 @@
+/*
+ * Copyright (C) 2014 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.
+ */
+
+//#define LOG_NDEBUG 0
+#define LOG_TAG "MediaFilter"
+
+#include <inttypes.h>
+#include <utils/Trace.h>
+
+#include <binder/MemoryDealer.h>
+
+#include <media/stagefright/BufferProducerWrapper.h>
+#include <media/stagefright/foundation/ABuffer.h>
+#include <media/stagefright/foundation/ADebug.h>
+#include <media/stagefright/foundation/AMessage.h>
+
+#include <media/stagefright/MediaDefs.h>
+#include <media/stagefright/MediaErrors.h>
+#include <media/stagefright/MediaFilter.h>
+
+#include "ColorConvert.h"
+#include "GraphicBufferListener.h"
+#include "IntrinsicBlurFilter.h"
+#include "RSFilter.h"
+#include "SaturationFilter.h"
+#include "ZeroFilter.h"
+
+namespace android {
+
+// parameter: number of input and output buffers
+static const size_t kBufferCountActual = 4;
+
+MediaFilter::MediaFilter()
+ : mState(UNINITIALIZED),
+ mGeneration(0),
+ mGraphicBufferListener(NULL) {
+}
+
+MediaFilter::~MediaFilter() {
+}
+
+//////////////////// PUBLIC FUNCTIONS //////////////////////////////////////////
+
+void MediaFilter::setNotificationMessage(const sp<AMessage> &msg) {
+ mNotify = msg;
+}
+
+void MediaFilter::initiateAllocateComponent(const sp<AMessage> &msg) {
+ msg->setWhat(kWhatAllocateComponent);
+ msg->setTarget(id());
+ msg->post();
+}
+
+void MediaFilter::initiateConfigureComponent(const sp<AMessage> &msg) {
+ msg->setWhat(kWhatConfigureComponent);
+ msg->setTarget(id());
+ msg->post();
+}
+
+void MediaFilter::initiateCreateInputSurface() {
+ (new AMessage(kWhatCreateInputSurface, id()))->post();
+}
+
+void MediaFilter::initiateStart() {
+ (new AMessage(kWhatStart, id()))->post();
+}
+
+void MediaFilter::initiateShutdown(bool keepComponentAllocated) {
+ sp<AMessage> msg = new AMessage(kWhatShutdown, id());
+ msg->setInt32("keepComponentAllocated", keepComponentAllocated);
+ msg->post();
+}
+
+void MediaFilter::signalFlush() {
+ (new AMessage(kWhatFlush, id()))->post();
+}
+
+void MediaFilter::signalResume() {
+ (new AMessage(kWhatResume, id()))->post();
+}
+
+// nothing to do
+void MediaFilter::signalRequestIDRFrame() {
+ return;
+}
+
+void MediaFilter::signalSetParameters(const sp<AMessage> &params) {
+ sp<AMessage> msg = new AMessage(kWhatSetParameters, id());
+ msg->setMessage("params", params);
+ msg->post();
+}
+
+void MediaFilter::signalEndOfInputStream() {
+ (new AMessage(kWhatSignalEndOfInputStream, id()))->post();
+}
+
+void MediaFilter::onMessageReceived(const sp<AMessage> &msg) {
+ switch (msg->what()) {
+ case kWhatAllocateComponent:
+ {
+ onAllocateComponent(msg);
+ break;
+ }
+ case kWhatConfigureComponent:
+ {
+ onConfigureComponent(msg);
+ break;
+ }
+ case kWhatStart:
+ {
+ onStart();
+ break;
+ }
+ case kWhatProcessBuffers:
+ {
+ processBuffers();
+ break;
+ }
+ case kWhatInputBufferFilled:
+ {
+ onInputBufferFilled(msg);
+ break;
+ }
+ case kWhatOutputBufferDrained:
+ {
+ onOutputBufferDrained(msg);
+ break;
+ }
+ case kWhatShutdown:
+ {
+ onShutdown(msg);
+ break;
+ }
+ case kWhatFlush:
+ {
+ onFlush();
+ break;
+ }
+ case kWhatResume:
+ {
+ // nothing to do
+ break;
+ }
+ case kWhatSetParameters:
+ {
+ onSetParameters(msg);
+ break;
+ }
+ case kWhatCreateInputSurface:
+ {
+ onCreateInputSurface();
+ break;
+ }
+ case GraphicBufferListener::kWhatFrameAvailable:
+ {
+ onInputFrameAvailable();
+ break;
+ }
+ case kWhatSignalEndOfInputStream:
+ {
+ onSignalEndOfInputStream();
+ break;
+ }
+ default:
+ {
+ ALOGE("Message not handled:\n%s", msg->debugString().c_str());
+ break;
+ }
+ }
+}
+
+//////////////////// PORT DESCRIPTION //////////////////////////////////////////
+
+MediaFilter::PortDescription::PortDescription() {
+}
+
+void MediaFilter::PortDescription::addBuffer(
+ IOMX::buffer_id id, const sp<ABuffer> &buffer) {
+ mBufferIDs.push_back(id);
+ mBuffers.push_back(buffer);
+}
+
+size_t MediaFilter::PortDescription::countBuffers() {
+ return mBufferIDs.size();
+}
+
+IOMX::buffer_id MediaFilter::PortDescription::bufferIDAt(size_t index) const {
+ return mBufferIDs.itemAt(index);
+}
+
+sp<ABuffer> MediaFilter::PortDescription::bufferAt(size_t index) const {
+ return mBuffers.itemAt(index);
+}
+
+//////////////////// HELPER FUNCTIONS //////////////////////////////////////////
+
+void MediaFilter::signalProcessBuffers() {
+ (new AMessage(kWhatProcessBuffers, id()))->post();
+}
+
+void MediaFilter::signalError(status_t error) {
+ sp<AMessage> notify = mNotify->dup();
+ notify->setInt32("what", CodecBase::kWhatError);
+ notify->setInt32("err", error);
+ notify->post();
+}
+
+status_t MediaFilter::allocateBuffersOnPort(OMX_U32 portIndex) {
+ CHECK(portIndex == kPortIndexInput || portIndex == kPortIndexOutput);
+ const bool isInput = portIndex == kPortIndexInput;
+ const size_t bufferSize = isInput ? mMaxInputSize : mMaxOutputSize;
+
+ CHECK(mDealer[portIndex] == NULL);
+ CHECK(mBuffers[portIndex].isEmpty());
+
+ ALOGV("Allocating %zu buffers of size %zu on %s port",
+ kBufferCountActual, bufferSize,
+ isInput ? "input" : "output");
+
+ size_t totalSize = kBufferCountActual * bufferSize;
+
+ mDealer[portIndex] = new MemoryDealer(totalSize, "MediaFilter");
+
+ for (size_t i = 0; i < kBufferCountActual; ++i) {
+ sp<IMemory> mem = mDealer[portIndex]->allocate(bufferSize);
+ CHECK(mem.get() != NULL);
+
+ BufferInfo info;
+ info.mStatus = BufferInfo::OWNED_BY_US;
+ info.mBufferID = i;
+ info.mGeneration = mGeneration;
+ info.mOutputFlags = 0;
+ info.mData = new ABuffer(mem->pointer(), bufferSize);
+ info.mData->meta()->setInt64("timeUs", 0);
+
+ mBuffers[portIndex].push_back(info);
+
+ if (!isInput) {
+ mAvailableOutputBuffers.push(
+ &mBuffers[portIndex].editItemAt(i));
+ }
+ }
+
+ sp<AMessage> notify = mNotify->dup();
+ notify->setInt32("what", CodecBase::kWhatBuffersAllocated);
+
+ notify->setInt32("portIndex", portIndex);
+
+ sp<PortDescription> desc = new PortDescription;
+
+ for (size_t i = 0; i < mBuffers[portIndex].size(); ++i) {
+ const BufferInfo &info = mBuffers[portIndex][i];
+
+ desc->addBuffer(info.mBufferID, info.mData);
+ }
+
+ notify->setObject("portDesc", desc);
+ notify->post();
+
+ return OK;
+}
+
+MediaFilter::BufferInfo* MediaFilter::findBufferByID(
+ uint32_t portIndex, IOMX::buffer_id bufferID,
+ ssize_t *index) {
+ for (size_t i = 0; i < mBuffers[portIndex].size(); ++i) {
+ BufferInfo *info = &mBuffers[portIndex].editItemAt(i);
+
+ if (info->mBufferID == bufferID) {
+ if (index != NULL) {
+ *index = i;
+ }
+ return info;
+ }
+ }
+
+ TRESPASS();
+
+ return NULL;
+}
+
+void MediaFilter::postFillThisBuffer(BufferInfo *info) {
+ ALOGV("postFillThisBuffer on buffer %d", info->mBufferID);
+ if (mPortEOS[kPortIndexInput]) {
+ return;
+ }
+
+ CHECK_EQ((int)info->mStatus, (int)BufferInfo::OWNED_BY_US);
+
+ info->mGeneration = mGeneration;
+
+ sp<AMessage> notify = mNotify->dup();
+ notify->setInt32("what", CodecBase::kWhatFillThisBuffer);
+ notify->setInt32("buffer-id", info->mBufferID);
+
+ info->mData->meta()->clear();
+ notify->setBuffer("buffer", info->mData);
+
+ sp<AMessage> reply = new AMessage(kWhatInputBufferFilled, id());
+ reply->setInt32("buffer-id", info->mBufferID);
+
+ notify->setMessage("reply", reply);
+
+ info->mStatus = BufferInfo::OWNED_BY_UPSTREAM;
+ notify->post();
+}
+
+void MediaFilter::postDrainThisBuffer(BufferInfo *info) {
+ CHECK_EQ((int)info->mStatus, (int)BufferInfo::OWNED_BY_US);
+
+ info->mGeneration = mGeneration;
+
+ sp<AMessage> notify = mNotify->dup();
+ notify->setInt32("what", CodecBase::kWhatDrainThisBuffer);
+ notify->setInt32("buffer-id", info->mBufferID);
+ notify->setInt32("flags", info->mOutputFlags);
+ notify->setBuffer("buffer", info->mData);
+
+ sp<AMessage> reply = new AMessage(kWhatOutputBufferDrained, id());
+ reply->setInt32("buffer-id", info->mBufferID);
+
+ notify->setMessage("reply", reply);
+
+ notify->post();
+
+ info->mStatus = BufferInfo::OWNED_BY_UPSTREAM;
+}
+
+void MediaFilter::postEOS() {
+ sp<AMessage> notify = mNotify->dup();
+ notify->setInt32("what", CodecBase::kWhatEOS);
+ notify->setInt32("err", ERROR_END_OF_STREAM);
+ notify->post();
+
+ ALOGV("Sent kWhatEOS.");
+}
+
+void MediaFilter::sendFormatChange() {
+ sp<AMessage> notify = mNotify->dup();
+
+ notify->setInt32("what", kWhatOutputFormatChanged);
+
+ AString mime;
+ CHECK(mOutputFormat->findString("mime", &mime));
+ notify->setString("mime", mime.c_str());
+
+ notify->setInt32("stride", mStride);
+ notify->setInt32("slice-height", mSliceHeight);
+ notify->setInt32("color-format", mColorFormatOut);
+ notify->setRect("crop", 0, 0, mStride - 1, mSliceHeight - 1);
+ notify->setInt32("width", mWidth);
+ notify->setInt32("height", mHeight);
+
+ notify->post();
+}
+
+void MediaFilter::requestFillEmptyInput() {
+ if (mPortEOS[kPortIndexInput]) {
+ return;
+ }
+
+ for (size_t i = 0; i < mBuffers[kPortIndexInput].size(); ++i) {
+ BufferInfo *info = &mBuffers[kPortIndexInput].editItemAt(i);
+
+ if (info->mStatus == BufferInfo::OWNED_BY_US) {
+ postFillThisBuffer(info);
+ }
+ }
+}
+
+void MediaFilter::processBuffers() {
+ if (mAvailableInputBuffers.empty() || mAvailableOutputBuffers.empty()) {
+ ALOGV("Skipping process (buffers unavailable)");
+ return;
+ }
+
+ if (mPortEOS[kPortIndexOutput]) {
+ // TODO notify caller of queueInput error when it is supported
+ // in MediaCodec
+ ALOGW("Tried to process a buffer after EOS.");
+ return;
+ }
+
+ BufferInfo *inputInfo = mAvailableInputBuffers[0];
+ mAvailableInputBuffers.removeAt(0);
+ BufferInfo *outputInfo = mAvailableOutputBuffers[0];
+ mAvailableOutputBuffers.removeAt(0);
+
+ status_t err;
+ err = mFilter->processBuffers(inputInfo->mData, outputInfo->mData);
+ if (err != (status_t)OK) {
+ outputInfo->mData->meta()->setInt32("err", err);
+ }
+
+ int64_t timeUs;
+ CHECK(inputInfo->mData->meta()->findInt64("timeUs", &timeUs));
+ outputInfo->mData->meta()->setInt64("timeUs", timeUs);
+ outputInfo->mOutputFlags = 0;
+ int32_t eos = 0;
+ if (inputInfo->mData->meta()->findInt32("eos", &eos) && eos != 0) {
+ outputInfo->mOutputFlags |= OMX_BUFFERFLAG_EOS;
+ mPortEOS[kPortIndexOutput] = true;
+ outputInfo->mData->meta()->setInt32("eos", eos);
+ postEOS();
+ ALOGV("Output stream saw EOS.");
+ }
+
+ ALOGV("Processed input buffer %u [%zu], output buffer %u [%zu]",
+ inputInfo->mBufferID, inputInfo->mData->size(),
+ outputInfo->mBufferID, outputInfo->mData->size());
+
+ if (mGraphicBufferListener != NULL) {
+ delete inputInfo;
+ } else {
+ postFillThisBuffer(inputInfo);
+ }
+ postDrainThisBuffer(outputInfo);
+
+ // prevent any corner case where buffers could get stuck in queue
+ signalProcessBuffers();
+}
+
+void MediaFilter::onAllocateComponent(const sp<AMessage> &msg) {
+ CHECK_EQ(mState, UNINITIALIZED);
+
+ CHECK(msg->findString("componentName", &mComponentName));
+ const char* name = mComponentName.c_str();
+ if (!strcasecmp(name, "android.filter.zerofilter")) {
+ mFilter = new ZeroFilter;
+ } else if (!strcasecmp(name, "android.filter.saturation")) {
+ mFilter = new SaturationFilter;
+ } else if (!strcasecmp(name, "android.filter.intrinsicblur")) {
+ mFilter = new IntrinsicBlurFilter;
+ } else if (!strcasecmp(name, "android.filter.RenderScript")) {
+ mFilter = new RSFilter;
+ } else {
+ ALOGE("Unrecognized filter name: %s", name);
+ signalError(NAME_NOT_FOUND);
+ return;
+ }
+
+ sp<AMessage> notify = mNotify->dup();
+ notify->setInt32("what", kWhatComponentAllocated);
+ // HACK - need "OMX.google" to use MediaCodec's software renderer
+ notify->setString("componentName", "OMX.google.MediaFilter");
+ notify->post();
+ mState = INITIALIZED;
+ ALOGV("Handled kWhatAllocateComponent.");
+}
+
+void MediaFilter::onConfigureComponent(const sp<AMessage> &msg) {
+ // TODO: generalize to allow audio filters as well as video
+
+ CHECK_EQ(mState, INITIALIZED);
+
+ // get params - at least mime, width & height
+ AString mime;
+ CHECK(msg->findString("mime", &mime));
+ if (strcasecmp(mime.c_str(), MEDIA_MIMETYPE_VIDEO_RAW)) {
+ ALOGE("Bad mime: %s", mime.c_str());
+ signalError(BAD_VALUE);
+ return;
+ }
+
+ CHECK(msg->findInt32("width", &mWidth));
+ CHECK(msg->findInt32("height", &mHeight));
+ if (!msg->findInt32("stride", &mStride)) {
+ mStride = mWidth;
+ }
+ if (!msg->findInt32("slice-height", &mSliceHeight)) {
+ mSliceHeight = mHeight;
+ }
+
+ mMaxInputSize = mWidth * mHeight * 4; // room for ARGB8888
+ int32_t maxInputSize;
+ if (msg->findInt32("max-input-size", &maxInputSize)
+ && (size_t)maxInputSize > mMaxInputSize) {
+ mMaxInputSize = maxInputSize;
+ }
+
+ if (!msg->findInt32("color-format", &mColorFormatIn)) {
+ // default to OMX_COLOR_Format32bitARGB8888
+ mColorFormatIn = OMX_COLOR_Format32bitARGB8888;
+ msg->setInt32("color-format", mColorFormatIn);
+ }
+ mColorFormatOut = mColorFormatIn;
+
+ mMaxOutputSize = mWidth * mHeight * 4; // room for ARGB8888
+
+ AString cacheDir;
+ if (!msg->findString("cacheDir", &cacheDir)) {
+ ALOGE("Failed to find cache directory in config message.");
+ signalError(NAME_NOT_FOUND);
+ return;
+ }
+
+ status_t err;
+ err = mFilter->configure(msg);
+ if (err != (status_t)OK) {
+ ALOGE("Failed to configure filter component, err %d", err);
+ signalError(err);
+ return;
+ }
+
+ mInputFormat = new AMessage();
+ mInputFormat->setString("mime", mime.c_str());
+ mInputFormat->setInt32("stride", mStride);
+ mInputFormat->setInt32("slice-height", mSliceHeight);
+ mInputFormat->setInt32("color-format", mColorFormatIn);
+ mInputFormat->setRect("crop", 0, 0, mStride, mSliceHeight);
+ mInputFormat->setInt32("width", mWidth);
+ mInputFormat->setInt32("height", mHeight);
+
+ mOutputFormat = new AMessage();
+ mOutputFormat->setString("mime", mime.c_str());
+ mOutputFormat->setInt32("stride", mStride);
+ mOutputFormat->setInt32("slice-height", mSliceHeight);
+ mOutputFormat->setInt32("color-format", mColorFormatOut);
+ mOutputFormat->setRect("crop", 0, 0, mStride, mSliceHeight);
+ mOutputFormat->setInt32("width", mWidth);
+ mOutputFormat->setInt32("height", mHeight);
+
+ sp<AMessage> notify = mNotify->dup();
+ notify->setInt32("what", kWhatComponentConfigured);
+ notify->setString("componentName", "MediaFilter");
+ notify->setMessage("input-format", mInputFormat);
+ notify->setMessage("output-format", mOutputFormat);
+ notify->post();
+ mState = CONFIGURED;
+ ALOGV("Handled kWhatConfigureComponent.");
+
+ sendFormatChange();
+}
+
+void MediaFilter::onStart() {
+ CHECK_EQ(mState, CONFIGURED);
+
+ allocateBuffersOnPort(kPortIndexInput);
+
+ allocateBuffersOnPort(kPortIndexOutput);
+
+ status_t err = mFilter->start();
+ if (err != (status_t)OK) {
+ ALOGE("Failed to start filter component, err %d", err);
+ signalError(err);
+ return;
+ }
+
+ mPortEOS[kPortIndexInput] = false;
+ mPortEOS[kPortIndexOutput] = false;
+ mInputEOSResult = OK;
+ mState = STARTED;
+
+ requestFillEmptyInput();
+ ALOGV("Handled kWhatStart.");
+}
+
+void MediaFilter::onInputBufferFilled(const sp<AMessage> &msg) {
+ IOMX::buffer_id bufferID;
+ CHECK(msg->findInt32("buffer-id", (int32_t*)&bufferID));
+ BufferInfo *info = findBufferByID(kPortIndexInput, bufferID);
+
+ if (mState != STARTED) {
+ // we're not running, so we'll just keep that buffer...
+ info->mStatus = BufferInfo::OWNED_BY_US;
+ return;
+ }
+
+ if (info->mGeneration != mGeneration) {
+ ALOGV("Caught a stale input buffer [ID %d]", bufferID);
+ // buffer is stale (taken before a flush/shutdown) - repost it
+ CHECK_EQ(info->mStatus, BufferInfo::OWNED_BY_US);
+ postFillThisBuffer(info);
+ return;
+ }
+
+ CHECK_EQ(info->mStatus, BufferInfo::OWNED_BY_UPSTREAM);
+ info->mStatus = BufferInfo::OWNED_BY_US;
+
+ sp<ABuffer> buffer;
+ int32_t err = OK;
+ bool eos = false;
+
+ if (!msg->findBuffer("buffer", &buffer)) {
+ // these are unfilled buffers returned by client
+ CHECK(msg->findInt32("err", &err));
+
+ if (err == OK) {
+ // buffers with no errors are returned on MediaCodec.flush
+ ALOGV("saw unfilled buffer (MediaCodec.flush)");
+ postFillThisBuffer(info);
+ return;
+ } else {
+ ALOGV("saw error %d instead of an input buffer", err);
+ eos = true;
+ }
+
+ buffer.clear();
+ }
+
+ int32_t isCSD;
+ if (buffer != NULL && buffer->meta()->findInt32("csd", &isCSD)
+ && isCSD != 0) {
+ // ignore codec-specific data buffers
+ ALOGW("MediaFilter received a codec-specific data buffer");
+ postFillThisBuffer(info);
+ return;
+ }
+
+ int32_t tmp;
+ if (buffer != NULL && buffer->meta()->findInt32("eos", &tmp) && tmp) {
+ eos = true;
+ err = ERROR_END_OF_STREAM;
+ }
+
+ mAvailableInputBuffers.push_back(info);
+ processBuffers();
+
+ if (eos) {
+ mPortEOS[kPortIndexInput] = true;
+ mInputEOSResult = err;
+ }
+
+ ALOGV("Handled kWhatInputBufferFilled. [ID %u]", bufferID);
+}
+
+void MediaFilter::onOutputBufferDrained(const sp<AMessage> &msg) {
+ IOMX::buffer_id bufferID;
+ CHECK(msg->findInt32("buffer-id", (int32_t*)&bufferID));
+ BufferInfo *info = findBufferByID(kPortIndexOutput, bufferID);
+
+ if (mState != STARTED) {
+ // we're not running, so we'll just keep that buffer...
+ info->mStatus = BufferInfo::OWNED_BY_US;
+ return;
+ }
+
+ if (info->mGeneration != mGeneration) {
+ ALOGV("Caught a stale output buffer [ID %d]", bufferID);
+ // buffer is stale (taken before a flush/shutdown) - keep it
+ CHECK_EQ(info->mStatus, BufferInfo::OWNED_BY_US);
+ return;
+ }
+
+ CHECK_EQ(info->mStatus, BufferInfo::OWNED_BY_UPSTREAM);
+ info->mStatus = BufferInfo::OWNED_BY_US;
+
+ mAvailableOutputBuffers.push_back(info);
+
+ processBuffers();
+
+ ALOGV("Handled kWhatOutputBufferDrained. [ID %u]",
+ bufferID);
+}
+
+void MediaFilter::onShutdown(const sp<AMessage> &msg) {
+ mGeneration++;
+
+ if (mState != UNINITIALIZED) {
+ mFilter->reset();
+ }
+
+ int32_t keepComponentAllocated;
+ CHECK(msg->findInt32("keepComponentAllocated", &keepComponentAllocated));
+ if (!keepComponentAllocated || mState == UNINITIALIZED) {
+ mState = UNINITIALIZED;
+ } else {
+ mState = INITIALIZED;
+ }
+
+ sp<AMessage> notify = mNotify->dup();
+ notify->setInt32("what", CodecBase::kWhatShutdownCompleted);
+ notify->post();
+}
+
+void MediaFilter::onFlush() {
+ mGeneration++;
+
+ mAvailableInputBuffers.clear();
+ for (size_t i = 0; i < mBuffers[kPortIndexInput].size(); ++i) {
+ BufferInfo *info = &mBuffers[kPortIndexInput].editItemAt(i);
+ info->mStatus = BufferInfo::OWNED_BY_US;
+ }
+ mAvailableOutputBuffers.clear();
+ for (size_t i = 0; i < mBuffers[kPortIndexOutput].size(); ++i) {
+ BufferInfo *info = &mBuffers[kPortIndexOutput].editItemAt(i);
+ info->mStatus = BufferInfo::OWNED_BY_US;
+ mAvailableOutputBuffers.push_back(info);
+ }
+
+ mPortEOS[kPortIndexInput] = false;
+ mPortEOS[kPortIndexOutput] = false;
+ mInputEOSResult = OK;
+
+ sp<AMessage> notify = mNotify->dup();
+ notify->setInt32("what", CodecBase::kWhatFlushCompleted);
+ notify->post();
+ ALOGV("Posted kWhatFlushCompleted");
+
+ // MediaCodec returns all input buffers after flush, so in
+ // onInputBufferFilled we call postFillThisBuffer on them
+}
+
+void MediaFilter::onSetParameters(const sp<AMessage> &msg) {
+ CHECK(mState != STARTED);
+
+ status_t err = mFilter->setParameters(msg);
+ if (err != (status_t)OK) {
+ ALOGE("setParameters returned err %d", err);
+ }
+}
+
+void MediaFilter::onCreateInputSurface() {
+ CHECK(mState == CONFIGURED);
+
+ mGraphicBufferListener = new GraphicBufferListener;
+
+ sp<AMessage> notify = new AMessage();
+ notify->setTarget(id());
+ status_t err = mGraphicBufferListener->init(
+ notify, mStride, mSliceHeight, kBufferCountActual);
+
+ if (err != OK) {
+ ALOGE("Failed to init mGraphicBufferListener: %d", err);
+ signalError(err);
+ return;
+ }
+
+ sp<AMessage> reply = mNotify->dup();
+ reply->setInt32("what", CodecBase::kWhatInputSurfaceCreated);
+ reply->setObject(
+ "input-surface",
+ new BufferProducerWrapper(
+ mGraphicBufferListener->getIGraphicBufferProducer()));
+ reply->post();
+}
+
+void MediaFilter::onInputFrameAvailable() {
+ BufferQueue::BufferItem item = mGraphicBufferListener->getBufferItem();
+ sp<GraphicBuffer> buf = mGraphicBufferListener->getBuffer(item);
+
+ // get pointer to graphic buffer
+ void* bufPtr;
+ buf->lock(GraphicBuffer::USAGE_SW_READ_OFTEN, &bufPtr);
+
+ // HACK - there is no OMX_COLOR_FORMATTYPE value for RGBA, so the format
+ // conversion is hardcoded until we add this.
+ // TODO: check input format and convert only if necessary
+ // copy RGBA graphic buffer into temporary ARGB input buffer
+ BufferInfo *inputInfo = new BufferInfo;
+ inputInfo->mData = new ABuffer(buf->getWidth() * buf->getHeight() * 4);
+ ALOGV("Copying surface data into temp buffer.");
+ convertRGBAToARGB(
+ (uint8_t*)bufPtr, buf->getWidth(), buf->getHeight(),
+ buf->getStride(), inputInfo->mData->data());
+ inputInfo->mBufferID = item.mBuf;
+ inputInfo->mGeneration = mGeneration;
+ inputInfo->mOutputFlags = 0;
+ inputInfo->mStatus = BufferInfo::OWNED_BY_US;
+ inputInfo->mData->meta()->setInt64("timeUs", item.mTimestamp / 1000);
+
+ mAvailableInputBuffers.push_back(inputInfo);
+
+ mGraphicBufferListener->releaseBuffer(item);
+
+ signalProcessBuffers();
+}
+
+void MediaFilter::onSignalEndOfInputStream() {
+ // if using input surface, need to send an EOS output buffer
+ if (mGraphicBufferListener != NULL) {
+ Vector<BufferInfo> *outputBufs = &mBuffers[kPortIndexOutput];
+ BufferInfo* eosBuf;
+ bool foundBuf = false;
+ for (size_t i = 0; i < kBufferCountActual; i++) {
+ eosBuf = &outputBufs->editItemAt(i);
+ if (eosBuf->mStatus == BufferInfo::OWNED_BY_US) {
+ foundBuf = true;
+ break;
+ }
+ }
+
+ if (!foundBuf) {
+ ALOGE("onSignalEndOfInputStream failed to find an output buffer");
+ return;
+ }
+
+ eosBuf->mOutputFlags = OMX_BUFFERFLAG_EOS;
+ eosBuf->mGeneration = mGeneration;
+ eosBuf->mData->setRange(0, 0);
+ postDrainThisBuffer(eosBuf);
+ ALOGV("Posted EOS on output buffer %zu", eosBuf->mBufferID);
+ }
+
+ mPortEOS[kPortIndexOutput] = true;
+ sp<AMessage> notify = mNotify->dup();
+ notify->setInt32("what", CodecBase::kWhatSignaledInputEOS);
+ notify->post();
+
+ ALOGV("Output stream saw EOS.");
+}
+
+} // namespace android
diff --git a/media/libstagefright/filters/RSFilter.cpp b/media/libstagefright/filters/RSFilter.cpp
new file mode 100644
index 0000000..b569945
--- /dev/null
+++ b/media/libstagefright/filters/RSFilter.cpp
@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2014 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.
+ */
+
+//#define LOG_NDEBUG 0
+#define LOG_TAG "RSFilter"
+
+#include <utils/Log.h>
+
+#include <media/stagefright/foundation/ABuffer.h>
+#include <media/stagefright/foundation/ADebug.h>
+#include <media/stagefright/foundation/AMessage.h>
+
+#include "RSFilter.h"
+
+namespace android {
+
+RSFilter::RSFilter() {
+
+}
+
+RSFilter::~RSFilter() {
+
+}
+
+status_t RSFilter::configure(const sp<AMessage> &msg) {
+ status_t err = SimpleFilter::configure(msg);
+ if (err != OK) {
+ return err;
+ }
+
+ if (!msg->findString("cacheDir", &mCacheDir)) {
+ ALOGE("Failed to find cache directory in config message.");
+ return NAME_NOT_FOUND;
+ }
+
+ sp<RenderScriptWrapper> wrapper;
+ if (!msg->findObject("rs-wrapper", (sp<RefBase>*)&wrapper)) {
+ ALOGE("Failed to find RenderScriptWrapper in config message.");
+ return NAME_NOT_FOUND;
+ }
+
+ mRS = wrapper->mContext;
+ mCallback = wrapper->mCallback;
+
+ return OK;
+}
+
+status_t RSFilter::start() {
+ // 32-bit elements for ARGB8888
+ RSC::sp<const RSC::Element> e = RSC::Element::U8_4(mRS);
+
+ RSC::Type::Builder tb(mRS, e);
+ tb.setX(mWidth);
+ tb.setY(mHeight);
+ RSC::sp<const RSC::Type> t = tb.create();
+
+ mAllocIn = RSC::Allocation::createTyped(mRS, t);
+ mAllocOut = RSC::Allocation::createTyped(mRS, t);
+
+ return OK;
+}
+
+void RSFilter::reset() {
+ mCallback.clear();
+ mAllocOut.clear();
+ mAllocIn.clear();
+ mRS.clear();
+}
+
+status_t RSFilter::setParameters(const sp<AMessage> &msg) {
+ return mCallback->handleSetParameters(msg);
+}
+
+status_t RSFilter::processBuffers(
+ const sp<ABuffer> &srcBuffer, const sp<ABuffer> &outBuffer) {
+ mAllocIn->copy1DRangeFrom(0, mWidth * mHeight, srcBuffer->data());
+ mCallback->processBuffers(mAllocIn.get(), mAllocOut.get());
+ mAllocOut->copy1DRangeTo(0, mWidth * mHeight, outBuffer->data());
+
+ return OK;
+}
+
+} // namespace android
diff --git a/media/libstagefright/filters/RSFilter.h b/media/libstagefright/filters/RSFilter.h
new file mode 100644
index 0000000..c5b5074
--- /dev/null
+++ b/media/libstagefright/filters/RSFilter.h
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2014 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.
+ */
+
+#ifndef RS_FILTER_H_
+#define RS_FILTER_H_
+
+#include <media/stagefright/RenderScriptWrapper.h>
+#include <RenderScript.h>
+
+#include "SimpleFilter.h"
+
+namespace android {
+
+struct AString;
+
+struct RSFilter : public SimpleFilter {
+public:
+ RSFilter();
+
+ virtual status_t configure(const sp<AMessage> &msg);
+ virtual status_t start();
+ virtual void reset();
+ virtual status_t setParameters(const sp<AMessage> &msg);
+ virtual status_t processBuffers(
+ const sp<ABuffer> &srcBuffer, const sp<ABuffer> &outBuffer);
+
+protected:
+ virtual ~RSFilter();
+
+private:
+ AString mCacheDir;
+ sp<RenderScriptWrapper::RSFilterCallback> mCallback;
+ RSC::sp<RSC::RS> mRS;
+ RSC::sp<RSC::Allocation> mAllocIn;
+ RSC::sp<RSC::Allocation> mAllocOut;
+};
+
+} // namespace android
+
+#endif // RS_FILTER_H_
diff --git a/media/libstagefright/filters/SaturationFilter.cpp b/media/libstagefright/filters/SaturationFilter.cpp
new file mode 100644
index 0000000..ba5f75a
--- /dev/null
+++ b/media/libstagefright/filters/SaturationFilter.cpp
@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2014 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.
+ */
+
+//#define LOG_NDEBUG 0
+#define LOG_TAG "SaturationFilter"
+
+#include <utils/Log.h>
+
+#include <media/stagefright/foundation/ABuffer.h>
+#include <media/stagefright/foundation/ADebug.h>
+#include <media/stagefright/foundation/AMessage.h>
+
+#include "SaturationFilter.h"
+
+namespace android {
+
+status_t SaturationFilter::configure(const sp<AMessage> &msg) {
+ status_t err = SimpleFilter::configure(msg);
+ if (err != OK) {
+ return err;
+ }
+
+ if (!msg->findString("cacheDir", &mCacheDir)) {
+ ALOGE("Failed to find cache directory in config message.");
+ return NAME_NOT_FOUND;
+ }
+
+ return OK;
+}
+
+status_t SaturationFilter::start() {
+ // TODO: use a single RS context object for entire application
+ mRS = new RSC::RS();
+
+ if (!mRS->init(mCacheDir.c_str())) {
+ ALOGE("Failed to initialize RenderScript context.");
+ return NO_INIT;
+ }
+
+ // 32-bit elements for ARGB8888
+ RSC::sp<const RSC::Element> e = RSC::Element::U8_4(mRS);
+
+ RSC::Type::Builder tb(mRS, e);
+ tb.setX(mWidth);
+ tb.setY(mHeight);
+ RSC::sp<const RSC::Type> t = tb.create();
+
+ mAllocIn = RSC::Allocation::createTyped(mRS, t);
+ mAllocOut = RSC::Allocation::createTyped(mRS, t);
+
+ mScript = new ScriptC_saturationARGB(mRS);
+
+ mScript->set_gSaturation(mSaturation);
+
+ return OK;
+}
+
+void SaturationFilter::reset() {
+ mScript.clear();
+ mAllocOut.clear();
+ mAllocIn.clear();
+ mRS.clear();
+}
+
+status_t SaturationFilter::setParameters(const sp<AMessage> &msg) {
+ sp<AMessage> params;
+ CHECK(msg->findMessage("params", &params));
+
+ float saturation;
+ if (params->findFloat("saturation", &saturation)) {
+ mSaturation = saturation;
+ }
+
+ return OK;
+}
+
+status_t SaturationFilter::processBuffers(
+ const sp<ABuffer> &srcBuffer, const sp<ABuffer> &outBuffer) {
+ mAllocIn->copy1DRangeFrom(0, mWidth * mHeight, srcBuffer->data());
+ mScript->forEach_root(mAllocIn, mAllocOut);
+ mAllocOut->copy1DRangeTo(0, mWidth * mHeight, outBuffer->data());
+
+ return OK;
+}
+
+} // namespace android
diff --git a/media/libstagefright/filters/SaturationFilter.h b/media/libstagefright/filters/SaturationFilter.h
new file mode 100644
index 0000000..0545021
--- /dev/null
+++ b/media/libstagefright/filters/SaturationFilter.h
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2014 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.
+ */
+
+#ifndef SATURATION_FILTER_H_
+#define SATURATION_FILTER_H_
+
+#include <RenderScript.h>
+
+#include "ScriptC_saturationARGB.h"
+#include "SimpleFilter.h"
+
+namespace android {
+
+struct SaturationFilter : public SimpleFilter {
+public:
+ SaturationFilter() : mSaturation(1.f) {};
+
+ virtual status_t configure(const sp<AMessage> &msg);
+ virtual status_t start();
+ virtual void reset();
+ virtual status_t setParameters(const sp<AMessage> &msg);
+ virtual status_t processBuffers(
+ const sp<ABuffer> &srcBuffer, const sp<ABuffer> &outBuffer);
+
+protected:
+ virtual ~SaturationFilter() {};
+
+private:
+ AString mCacheDir;
+ RSC::sp<RSC::RS> mRS;
+ RSC::sp<RSC::Allocation> mAllocIn;
+ RSC::sp<RSC::Allocation> mAllocOut;
+ RSC::sp<ScriptC_saturationARGB> mScript;
+ float mSaturation;
+};
+
+} // namespace android
+
+#endif // SATURATION_FILTER_H_
diff --git a/media/libstagefright/filters/SimpleFilter.cpp b/media/libstagefright/filters/SimpleFilter.cpp
new file mode 100644
index 0000000..6c1ca2c
--- /dev/null
+++ b/media/libstagefright/filters/SimpleFilter.cpp
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2014 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 <media/stagefright/foundation/ADebug.h>
+#include <media/stagefright/foundation/AMessage.h>
+
+#include "SimpleFilter.h"
+
+namespace android {
+
+status_t SimpleFilter::configure(const sp<AMessage> &msg) {
+ CHECK(msg->findInt32("width", &mWidth));
+ CHECK(msg->findInt32("height", &mHeight));
+ if (!msg->findInt32("stride", &mStride)) {
+ mStride = mWidth;
+ }
+ if (!msg->findInt32("slice-height", &mSliceHeight)) {
+ mSliceHeight = mHeight;
+ }
+ CHECK(msg->findInt32("color-format", &mColorFormatIn));
+ mColorFormatOut = mColorFormatIn;
+
+ return OK;
+}
+
+} // namespace android
diff --git a/media/libstagefright/filters/SimpleFilter.h b/media/libstagefright/filters/SimpleFilter.h
new file mode 100644
index 0000000..4cd37ef
--- /dev/null
+++ b/media/libstagefright/filters/SimpleFilter.h
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2014 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.
+ */
+
+#ifndef SIMPLE_FILTER_H_
+#define SIMPLE_FILTER_H_
+
+#include <stdint.h>
+#include <utils/Errors.h>
+#include <utils/RefBase.h>
+
+struct ABuffer;
+struct AMessage;
+
+namespace android {
+
+struct SimpleFilter : public RefBase {
+public:
+ SimpleFilter() : mWidth(0), mHeight(0), mStride(0), mSliceHeight(0),
+ mColorFormatIn(0), mColorFormatOut(0) {};
+
+ virtual status_t configure(const sp<AMessage> &msg);
+
+ virtual status_t start() = 0;
+ virtual void reset() = 0;
+ virtual status_t setParameters(const sp<AMessage> &msg) = 0;
+ virtual status_t processBuffers(
+ const sp<ABuffer> &srcBuffer, const sp<ABuffer> &outBuffer) = 0;
+
+protected:
+ int32_t mWidth, mHeight;
+ int32_t mStride, mSliceHeight;
+ int32_t mColorFormatIn, mColorFormatOut;
+
+ virtual ~SimpleFilter() {};
+};
+
+} // namespace android
+
+#endif // SIMPLE_FILTER_H_
diff --git a/media/libstagefright/filters/ZeroFilter.cpp b/media/libstagefright/filters/ZeroFilter.cpp
new file mode 100644
index 0000000..3f1243c
--- /dev/null
+++ b/media/libstagefright/filters/ZeroFilter.cpp
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2014 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.
+ */
+
+//#define LOG_NDEBUG 0
+#define LOG_TAG "ZeroFilter"
+
+#include <media/stagefright/foundation/ABuffer.h>
+#include <media/stagefright/foundation/ADebug.h>
+#include <media/stagefright/foundation/AMessage.h>
+
+#include "ZeroFilter.h"
+
+namespace android {
+
+status_t ZeroFilter::setParameters(const sp<AMessage> &msg) {
+ sp<AMessage> params;
+ CHECK(msg->findMessage("params", &params));
+
+ int32_t invert;
+ if (params->findInt32("invert", &invert)) {
+ mInvertData = (invert != 0);
+ }
+
+ return OK;
+}
+
+status_t ZeroFilter::processBuffers(
+ const sp<ABuffer> &srcBuffer, const sp<ABuffer> &outBuffer) {
+ // assuming identical input & output buffers, since we're a copy filter
+ if (mInvertData) {
+ uint32_t* src = (uint32_t*)srcBuffer->data();
+ uint32_t* dest = (uint32_t*)outBuffer->data();
+ for (size_t i = 0; i < srcBuffer->size() / 4; ++i) {
+ *(dest++) = *(src++) ^ 0xFFFFFFFF;
+ }
+ } else {
+ memcpy(outBuffer->data(), srcBuffer->data(), srcBuffer->size());
+ }
+ outBuffer->setRange(0, srcBuffer->size());
+
+ return OK;
+}
+
+} // namespace android
diff --git a/media/libstagefright/filters/ZeroFilter.h b/media/libstagefright/filters/ZeroFilter.h
new file mode 100644
index 0000000..bd34dfb
--- /dev/null
+++ b/media/libstagefright/filters/ZeroFilter.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2014 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.
+ */
+
+#ifndef ZERO_FILTER_H_
+#define ZERO_FILTER_H_
+
+#include "SimpleFilter.h"
+
+namespace android {
+
+struct ZeroFilter : public SimpleFilter {
+public:
+ ZeroFilter() : mInvertData(false) {};
+
+ virtual status_t start() { return OK; };
+ virtual void reset() {};
+ virtual status_t setParameters(const sp<AMessage> &msg);
+ virtual status_t processBuffers(
+ const sp<ABuffer> &srcBuffer, const sp<ABuffer> &outBuffer);
+
+protected:
+ virtual ~ZeroFilter() {};
+
+private:
+ bool mInvertData;
+};
+
+} // namespace android
+
+#endif // ZERO_FILTER_H_
diff --git a/media/libstagefright/filters/saturation.rs b/media/libstagefright/filters/saturation.rs
new file mode 100644
index 0000000..2c867ac
--- /dev/null
+++ b/media/libstagefright/filters/saturation.rs
@@ -0,0 +1,40 @@
+// Sample script for RGB888 support (compare to saturationARGB.rs)
+/*
+ * Copyright (C) 2014 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.
+ */
+
+#pragma version(1)
+#pragma rs java_package_name(com.android.rs.cppbasic)
+#pragma rs_fp_relaxed
+
+const static float3 gMonoMult = {0.299f, 0.587f, 0.114f};
+
+// global variables (parameters accessible to application code)
+float gSaturation = 1.0f;
+
+void root(const uchar3 *v_in, uchar3 *v_out) {
+ // scale 0-255 uchar to 0-1.0 float
+ float3 in = {v_in->r * 0.003921569f, v_in->g * 0.003921569f,
+ v_in->b * 0.003921569f};
+
+ // apply saturation filter
+ float3 result = dot(in, gMonoMult);
+ result = mix(result, in, gSaturation);
+
+ // convert to uchar, copied from rsPackColorTo8888
+ v_out->x = (uchar)clamp((result.r * 255.f + 0.5f), 0.f, 255.f);
+ v_out->y = (uchar)clamp((result.g * 255.f + 0.5f), 0.f, 255.f);
+ v_out->z = (uchar)clamp((result.b * 255.f + 0.5f), 0.f, 255.f);
+}
diff --git a/media/libstagefright/filters/saturationARGB.rs b/media/libstagefright/filters/saturationARGB.rs
new file mode 100644
index 0000000..1de9dd8
--- /dev/null
+++ b/media/libstagefright/filters/saturationARGB.rs
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2014 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.
+ */
+
+#pragma version(1)
+#pragma rs java_package_name(com.android.rs.cppbasic)
+#pragma rs_fp_relaxed
+
+const static float3 gMonoMult = {0.299f, 0.587f, 0.114f};
+
+// global variables (parameters accessible to application code)
+float gSaturation = 1.0f;
+
+void root(const uchar4 *v_in, uchar4 *v_out) {
+ v_out->x = v_in->x; // don't modify A
+
+ // get RGB, scale 0-255 uchar to 0-1.0 float
+ float3 rgb = {v_in->y * 0.003921569f, v_in->z * 0.003921569f,
+ v_in->w * 0.003921569f};
+
+ // apply saturation filter
+ float3 result = dot(rgb, gMonoMult);
+ result = mix(result, rgb, gSaturation);
+
+ v_out->y = (uchar)clamp((result.r * 255.f + 0.5f), 0.f, 255.f);
+ v_out->z = (uchar)clamp((result.g * 255.f + 0.5f), 0.f, 255.f);
+ v_out->w = (uchar)clamp((result.b * 255.f + 0.5f), 0.f, 255.f);
+}