First submission of audio effect library from NXP software.
This CL contains the first open sourceable version of the audio effect library from NXP software.
The effects implemented are:
- Bass boost
- Virtualizer (stereo widening)
- Equalizer
- Spectrum analyzer
Source file for the effect engines are located under libeffects/lvm/lib
The wrapper implementing the interface with the audio effect framework in under libeffects/lvm/wrapper
The code of other effect libraries has also been reorganized fo clarity:
- the effect factory is now under libeffects/factory
- the test equalizer and reverb effects are under libeffect/testlibs
- the visualizer is under libeffects/virtualizer
Change-Id: I8d91e2181f81b89f8fc0c1e1e6bf552c5809b2eb
diff --git a/media/libeffects/visualizer/Android.mk b/media/libeffects/visualizer/Android.mk
new file mode 100644
index 0000000..82cd925
--- /dev/null
+++ b/media/libeffects/visualizer/Android.mk
@@ -0,0 +1,30 @@
+LOCAL_PATH:= $(call my-dir)
+
+# Visualizer library
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES:= \
+ EffectVisualizer.cpp
+
+LOCAL_CFLAGS+= -O2
+
+LOCAL_SHARED_LIBRARIES := \
+ libcutils
+
+LOCAL_MODULE_PATH := $(TARGET_OUT_SHARED_LIBRARIES)/soundfx
+LOCAL_MODULE:= libvisualizer
+
+ifeq ($(TARGET_OS)-$(TARGET_SIMULATOR),linux-true)
+LOCAL_LDLIBS += -ldlS
+endif
+
+ifneq ($(TARGET_SIMULATOR),true)
+LOCAL_SHARED_LIBRARIES += libdl
+endif
+
+LOCAL_C_INCLUDES := \
+ $(call include-path-for, graphics corecg)
+
+LOCAL_PRELINK_MODULE := false
+
+include $(BUILD_SHARED_LIBRARY)
\ No newline at end of file
diff --git a/media/libeffects/visualizer/EffectVisualizer.cpp b/media/libeffects/visualizer/EffectVisualizer.cpp
new file mode 100644
index 0000000..bcda06e
--- /dev/null
+++ b/media/libeffects/visualizer/EffectVisualizer.cpp
@@ -0,0 +1,401 @@
+/*
+ * Copyright (C) 2010 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_TAG "Visualizer"
+//#define LOG_NDEBUG 0
+#include <cutils/log.h>
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+#include <new>
+#include <media/EffectVisualizerApi.h>
+
+namespace android {
+
+// effect_interface_t interface implementation for visualizer effect
+extern "C" const struct effect_interface_s gVisualizerInterface;
+
+// Google Visualizer UUID: d069d9e0-8329-11df-9168-0002a5d5c51b
+const effect_descriptor_t gVisualizerDescriptor = {
+ {0xe46b26a0, 0xdddd, 0x11db, 0x8afd, {0x00, 0x02, 0xa5, 0xd5, 0xc5, 0x1b}}, // type
+ {0xd069d9e0, 0x8329, 0x11df, 0x9168, {0x00, 0x02, 0xa5, 0xd5, 0xc5, 0x1b}}, // uuid
+ EFFECT_API_VERSION,
+ (EFFECT_FLAG_TYPE_INSERT | EFFECT_FLAG_INSERT_FIRST),
+ 0, // TODO
+ 1,
+ "Visualizer",
+ "Google Inc.",
+};
+
+enum visualizer_state_e {
+ VISUALIZER_STATE_UNINITIALIZED,
+ VISUALIZER_STATE_INITIALIZED,
+ VISUALIZER_STATE_ACTIVE,
+};
+
+struct VisualizerContext {
+ const struct effect_interface_s *mItfe;
+ effect_config_t mConfig;
+ uint32_t mState;
+ uint32_t mCaptureIdx;
+ uint32_t mCaptureSize;
+ uint32_t mCurrentBuf;
+ uint8_t mCaptureBuf[2][VISUALIZER_CAPTURE_SIZE_MAX];
+};
+
+
+//
+//--- Local functions
+//
+
+void Visualizer_reset(VisualizerContext *pContext)
+{
+ pContext->mCaptureIdx = 0;
+ pContext->mCurrentBuf = 0;
+ memset(pContext->mCaptureBuf[0], 0, VISUALIZER_CAPTURE_SIZE_MAX);
+ memset(pContext->mCaptureBuf[1], 0, VISUALIZER_CAPTURE_SIZE_MAX);
+}
+
+//----------------------------------------------------------------------------
+// Visualizer_configure()
+//----------------------------------------------------------------------------
+// Purpose: Set input and output audio configuration.
+//
+// Inputs:
+// pContext: effect engine context
+// pConfig: pointer to effect_config_t structure holding input and output
+// configuration parameters
+//
+// Outputs:
+//
+//----------------------------------------------------------------------------
+
+int Visualizer_configure(VisualizerContext *pContext, effect_config_t *pConfig)
+{
+ LOGV("Visualizer_configure start");
+
+ if (pConfig->inputCfg.samplingRate != pConfig->outputCfg.samplingRate) return -EINVAL;
+ if (pConfig->inputCfg.channels != pConfig->outputCfg.channels) return -EINVAL;
+ if (pConfig->inputCfg.format != pConfig->outputCfg.format) return -EINVAL;
+ if (pConfig->inputCfg.channels != CHANNEL_STEREO) return -EINVAL;
+ if (pConfig->outputCfg.accessMode != EFFECT_BUFFER_ACCESS_WRITE &&
+ pConfig->outputCfg.accessMode != EFFECT_BUFFER_ACCESS_ACCUMULATE) return -EINVAL;
+ if (pConfig->inputCfg.format != SAMPLE_FORMAT_PCM_S15) return -EINVAL;
+
+ memcpy(&pContext->mConfig, pConfig, sizeof(effect_config_t));
+
+ Visualizer_reset(pContext);
+
+ return 0;
+}
+
+
+//----------------------------------------------------------------------------
+// Visualizer_init()
+//----------------------------------------------------------------------------
+// Purpose: Initialize engine with default configuration.
+//
+// Inputs:
+// pContext: effect engine context
+//
+// Outputs:
+//
+//----------------------------------------------------------------------------
+
+int Visualizer_init(VisualizerContext *pContext)
+{
+ pContext->mConfig.inputCfg.accessMode = EFFECT_BUFFER_ACCESS_READ;
+ pContext->mConfig.inputCfg.channels = CHANNEL_STEREO;
+ pContext->mConfig.inputCfg.format = SAMPLE_FORMAT_PCM_S15;
+ pContext->mConfig.inputCfg.samplingRate = 44100;
+ pContext->mConfig.inputCfg.bufferProvider.getBuffer = NULL;
+ pContext->mConfig.inputCfg.bufferProvider.releaseBuffer = NULL;
+ pContext->mConfig.inputCfg.bufferProvider.cookie = NULL;
+ pContext->mConfig.inputCfg.mask = EFFECT_CONFIG_ALL;
+ pContext->mConfig.outputCfg.accessMode = EFFECT_BUFFER_ACCESS_ACCUMULATE;
+ pContext->mConfig.outputCfg.channels = CHANNEL_STEREO;
+ pContext->mConfig.outputCfg.format = SAMPLE_FORMAT_PCM_S15;
+ pContext->mConfig.outputCfg.samplingRate = 44100;
+ pContext->mConfig.outputCfg.bufferProvider.getBuffer = NULL;
+ pContext->mConfig.outputCfg.bufferProvider.releaseBuffer = NULL;
+ pContext->mConfig.outputCfg.bufferProvider.cookie = NULL;
+ pContext->mConfig.outputCfg.mask = EFFECT_CONFIG_ALL;
+
+ pContext->mCaptureSize = VISUALIZER_CAPTURE_SIZE_MAX;
+
+ Visualizer_configure(pContext, &pContext->mConfig);
+
+ return 0;
+}
+
+//
+//--- Effect Library Interface Implementation
+//
+
+extern "C" int EffectQueryNumberEffects(uint32_t *pNumEffects) {
+ *pNumEffects = 1;
+ return 0;
+}
+
+extern "C" int EffectQueryEffect(uint32_t index, effect_descriptor_t *pDescriptor) {
+ if (pDescriptor == NULL) {
+ return -EINVAL;
+ }
+ if (index > 0) {
+ return -EINVAL;
+ }
+ memcpy(pDescriptor, &gVisualizerDescriptor, sizeof(effect_descriptor_t));
+ return 0;
+}
+
+extern "C" int EffectCreate(effect_uuid_t *uuid,
+ int32_t sessionId,
+ int32_t ioId,
+ effect_interface_t *pInterface) {
+ int ret;
+ int i;
+
+ if (pInterface == NULL || uuid == NULL) {
+ return -EINVAL;
+ }
+
+ if (memcmp(uuid, &gVisualizerDescriptor.uuid, sizeof(effect_uuid_t)) != 0) {
+ return -EINVAL;
+ }
+
+ VisualizerContext *pContext = new VisualizerContext;
+
+ pContext->mItfe = &gVisualizerInterface;
+ pContext->mState = VISUALIZER_STATE_UNINITIALIZED;
+
+ ret = Visualizer_init(pContext);
+ if (ret < 0) {
+ LOGW("EffectCreate() init failed");
+ delete pContext;
+ return ret;
+ }
+
+ *pInterface = (effect_interface_t)pContext;
+
+ pContext->mState = VISUALIZER_STATE_INITIALIZED;
+
+ LOGV("EffectCreate %p", pContext);
+
+ return 0;
+
+}
+
+extern "C" int EffectRelease(effect_interface_t interface) {
+ VisualizerContext * pContext = (VisualizerContext *)interface;
+
+ LOGV("EffectRelease %p", interface);
+ if (pContext == NULL) {
+ return -EINVAL;
+ }
+ pContext->mState = VISUALIZER_STATE_UNINITIALIZED;
+ delete pContext;
+
+ return 0;
+}
+
+//
+//--- Effect Control Interface Implementation
+//
+
+static inline int16_t clamp16(int32_t sample)
+{
+ if ((sample>>15) ^ (sample>>31))
+ sample = 0x7FFF ^ (sample>>31);
+ return sample;
+}
+
+extern "C" int Visualizer_process(
+ effect_interface_t self,audio_buffer_t *inBuffer, audio_buffer_t *outBuffer)
+{
+ android::VisualizerContext * pContext = (android::VisualizerContext *)self;
+
+ if (pContext == NULL) {
+ return -EINVAL;
+ }
+ if (pContext->mState != VISUALIZER_STATE_ACTIVE) {
+ return -ENODATA;
+ }
+
+ if (inBuffer == NULL || inBuffer->raw == NULL ||
+ outBuffer == NULL || outBuffer->raw == NULL ||
+ inBuffer->frameCount != outBuffer->frameCount ||
+ inBuffer->frameCount == 0) {
+ return -EINVAL;
+ }
+
+ // all code below assumes stereo 16 bit PCM output and input
+ uint32_t captIdx;
+ uint32_t inIdx;
+ uint8_t *buf = pContext->mCaptureBuf[pContext->mCurrentBuf];
+ for (inIdx = 0, captIdx = pContext->mCaptureIdx;
+ inIdx < inBuffer->frameCount && captIdx < pContext->mCaptureSize;
+ inIdx++, captIdx++) {
+ int32_t smp = inBuffer->s16[2 * inIdx] + inBuffer->s16[2 * inIdx + 1];
+ smp = (smp + (1 << 8)) >> 9;
+ buf[captIdx] = ((uint8_t)smp)^0x80;
+ }
+ pContext->mCaptureIdx = captIdx;
+
+ // go to next buffer when buffer full
+ if (pContext->mCaptureIdx == pContext->mCaptureSize) {
+ pContext->mCurrentBuf ^= 1;
+ pContext->mCaptureIdx = 0;
+ }
+
+ if (inBuffer->raw != outBuffer->raw) {
+ if (pContext->mConfig.outputCfg.accessMode == EFFECT_BUFFER_ACCESS_ACCUMULATE) {
+ for (size_t i = 0; i < outBuffer->frameCount*2; i++) {
+ outBuffer->s16[i] = clamp16(outBuffer->s16[i] + inBuffer->s16[i]);
+ }
+ } else {
+ memcpy(outBuffer->raw, inBuffer->raw, outBuffer->frameCount * 2 * sizeof(int16_t));
+ }
+ }
+ return 0;
+} // end Visualizer_process
+
+extern "C" int Visualizer_command(effect_interface_t self, int cmdCode, int cmdSize,
+ void *pCmdData, int *replySize, void *pReplyData) {
+
+ android::VisualizerContext * pContext = (android::VisualizerContext *)self;
+ int retsize;
+
+ if (pContext == NULL || pContext->mState == VISUALIZER_STATE_UNINITIALIZED) {
+ return -EINVAL;
+ }
+
+// LOGV("Visualizer_command command %d cmdSize %d",cmdCode, cmdSize);
+
+ switch (cmdCode) {
+ case EFFECT_CMD_INIT:
+ if (pReplyData == NULL || *replySize != sizeof(int)) {
+ return -EINVAL;
+ }
+ *(int *) pReplyData = Visualizer_init(pContext);
+ break;
+ case EFFECT_CMD_CONFIGURE:
+ if (pCmdData == NULL || cmdSize != sizeof(effect_config_t)
+ || pReplyData == NULL || *replySize != sizeof(int)) {
+ return -EINVAL;
+ }
+ *(int *) pReplyData = Visualizer_configure(pContext,
+ (effect_config_t *) pCmdData);
+ break;
+ case EFFECT_CMD_RESET:
+ Visualizer_reset(pContext);
+ break;
+ case EFFECT_CMD_ENABLE:
+ if (pReplyData == NULL || *replySize != sizeof(int)) {
+ return -EINVAL;
+ }
+ if (pContext->mState != VISUALIZER_STATE_INITIALIZED) {
+ return -ENOSYS;
+ }
+ pContext->mState = VISUALIZER_STATE_ACTIVE;
+ LOGV("EFFECT_CMD_ENABLE() OK");
+ *(int *)pReplyData = 0;
+ break;
+ case EFFECT_CMD_DISABLE:
+ if (pReplyData == NULL || *replySize != sizeof(int)) {
+ return -EINVAL;
+ }
+ if (pContext->mState != VISUALIZER_STATE_ACTIVE) {
+ return -ENOSYS;
+ }
+ pContext->mState = VISUALIZER_STATE_INITIALIZED;
+ LOGV("EFFECT_CMD_DISABLE() OK");
+ *(int *)pReplyData = 0;
+ break;
+ case EFFECT_CMD_GET_PARAM: {
+ if (pCmdData == NULL ||
+ cmdSize != (int)(sizeof(effect_param_t) + sizeof(uint32_t)) ||
+ pReplyData == NULL ||
+ *replySize < (int)(sizeof(effect_param_t) + sizeof(uint32_t) + sizeof(uint32_t))) {
+ return -EINVAL;
+ }
+ memcpy(pReplyData, pCmdData, sizeof(effect_param_t) + sizeof(uint32_t));
+ effect_param_t *p = (effect_param_t *)pReplyData;
+ p->status = 0;
+ *replySize = sizeof(effect_param_t) + sizeof(uint32_t);
+ if (p->psize != sizeof(uint32_t) ||
+ *(uint32_t *)p->data != VISU_PARAM_CAPTURE_SIZE) {
+ p->status = -EINVAL;
+ break;
+ }
+ LOGV("get mCaptureSize = %d", pContext->mCaptureSize);
+ *((uint32_t *)p->data + 1) = pContext->mCaptureSize;
+ p->vsize = sizeof(uint32_t);
+ *replySize += sizeof(uint32_t);
+ } break;
+ case EFFECT_CMD_SET_PARAM: {
+ if (pCmdData == NULL ||
+ cmdSize != (int)(sizeof(effect_param_t) + sizeof(uint32_t) + sizeof(uint32_t)) ||
+ pReplyData == NULL || *replySize != sizeof(int32_t)) {
+ return -EINVAL;
+ }
+ *(int32_t *)pReplyData = 0;
+ effect_param_t *p = (effect_param_t *)pCmdData;
+ if (p->psize != sizeof(uint32_t) ||
+ p->vsize != sizeof(uint32_t) ||
+ *(uint32_t *)p->data != VISU_PARAM_CAPTURE_SIZE) {
+ *(int32_t *)pReplyData = -EINVAL;
+ break;;
+ }
+ pContext->mCaptureSize = *((uint32_t *)p->data + 1);
+ LOGV("set mCaptureSize = %d", pContext->mCaptureSize);
+ } break;
+ case EFFECT_CMD_SET_DEVICE:
+ case EFFECT_CMD_SET_VOLUME:
+ case EFFECT_CMD_SET_AUDIO_MODE:
+ break;
+
+
+ case VISU_CMD_CAPTURE:
+ if (pReplyData == NULL || *replySize != (int)pContext->mCaptureSize) {
+ LOGV("VISU_CMD_CAPTURE() error *replySize %d pContext->mCaptureSize %d",
+ *replySize, pContext->mCaptureSize);
+ return -EINVAL;
+ }
+ if (pContext->mState == VISUALIZER_STATE_ACTIVE) {
+ memcpy(pReplyData,
+ pContext->mCaptureBuf[pContext->mCurrentBuf ^ 1],
+ pContext->mCaptureSize);
+ } else {
+ memset(pReplyData, 0x80, pContext->mCaptureSize);
+ }
+ break;
+
+ default:
+ LOGW("Visualizer_command invalid command %d",cmdCode);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+// effect_interface_t interface implementation for visualizer effect
+const struct effect_interface_s gVisualizerInterface = {
+ Visualizer_process,
+ Visualizer_command
+};
+
+} // namespace
+