#include <LogUtil.h>
#include <GLUtils.h>
#include "AudioVisualRender.h"
#include <gtc/matrix_transform.hpp>
#include <detail/type_mat.hpp>
#include <detail/type_mat4x4.hpp>
#include <render/video/OpenGLRender.h>
AudioVisualRender* AudioVisualRender::m_pInstance = nullptr;
std::mutex AudioVisualRender::m_Mutex;
AudioVisualRender *AudioVisualRender::GetInstance() {
if(m_pInstance == nullptr) {
std::unique_lock<std::mutex> lock(m_Mutex);
if(m_pInstance == nullptr) {
m_pInstance = new AudioVisualRender();
return m_pInstance;
void AudioVisualRender::ReleaseInstance() {
std::unique_lock<std::mutex> lock(m_Mutex);
if(m_pInstance != nullptr) {
delete m_pInstance;
m_pInstance = nullptr;
void AudioVisualRender::OnAudioVisualSurfaceCreated() {
ByteFlowPrintE("AudioVisualRender::OnAudioVisualSurfaceCreated");
if (m_ProgramObj)
return;
char vShaderStr[] =
"#version 300 es\n"
"layout(location = 0) in vec4 a_position;\n"
"layout(location = 1) in vec2 a_texCoord;\n"
"uniform mat4 u_MVPMatrix;\n"
"out vec2 v_texCoord;\n"
"void main()\n"
"{\n"
" gl_Position = u_MVPMatrix * a_position;\n"
" v_texCoord = a_texCoord;\n"
" gl_PointSize = 4.0f;\n"
char fShaderStr[] =
"#version 300 es \n"
"precision mediump float; \n"
"in vec2 v_texCoord; \n"
"layout(location = 0) out vec4 outColor; \n"
"uniform float drawType; \n"
"void main() \n"
"{ \n"
" if(drawType == 1.0) \n"
" { \n"
" outColor = vec4(1.5 - v_texCoord.y, 0.3, 0.3, 1.0); \n"
" } \n"
" else if(drawType == 2.0) \n"
" { \n"
" outColor = vec4(1.0, 1.0, 1.0, 1.0); \n"
" } \n"
" else if(drawType == 3.0) \n"
" { \n"
" outColor = vec4(0.3, 0.3, 0.3, 1.0); \n"
" } \n"
"} \n";
//生成着色器程序
m_ProgramObj = GLUtils::CreateProgram(vShaderStr, fShaderStr);
if (m_ProgramObj == GL_NONE) {
LOGCATE("VisualizeAudioSample::Init create program fail");
//设置 MVP Matrix 变换矩阵
// Projection matrix
glm::mat4 Projection = glm::ortho(-1.0f, 1.0f, -1.0f, 1.0f, 0.1f, 100.0f);
//glm::mat4 Projection = glm::frustum(-ratio, ratio, -1.0f, 1.0f, 4.0f, 100.0f);
//glm::mat4 Projection = glm::perspective(45.0f, ratio, 0.1f, 100.f);
// View matrix
glm::mat4 View = glm::lookAt(
glm::vec3(0, 0, 4), // Camera is at (0,0,1), in World Space
glm::vec3(0, 0, 0), // and looks at the origin
glm::vec3(0, 1, 0) // Head is up (set to 0,-1,0 to look upside-down)
// Model matrix
glm::mat4 Model = glm::mat4(1.0f);
Model = glm::scale(Model, glm::vec3(1.0f, 1.0f, 1.0f));
Model = glm::rotate(Model, 0.0f, glm::vec3(1.0f, 0.0f, 0.0f));
Model = glm::rotate(Model, 0.0f, glm::vec3(0.0f, 1.0f, 0.0f));
Model = glm::translate(Model, glm::vec3(0.0f, 0.0f, 0.0f));
m_MVPMatrix = Projection * View * Model;
void AudioVisualRender::OnAudioVisualSurfaceChanged(int w, int h) {
ByteFlowPrintE("AudioVisualRender::OnAudioVisualSurfaceChanged [w, h] = [%d, %d]", w, h);
glClearColor(1.0f, 1.0f, 1.0f, 1.0);
glViewport(0, 0, w, h);
void AudioVisualRender::OnAudioVisualDrawFrame() {
ByteFlowPrintD("AudioVisualRender::OnAudioVisualDrawFrame");
glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
std::unique_lock<std::mutex> lock(m_Mutex);
if (m_ProgramObj == GL_NONE || m_pAudioBuffer == nullptr) return;
UpdateMesh();
lock.unlock();
// Generate VBO Ids and load the VBOs with data
if(m_VboIds[0] == 0)
glGenBuffers(2, m_VboIds);
glBindBuffer(GL_ARRAY_BUFFER, m_VboIds[0]);
glBufferData(GL_ARRAY_BUFFER, sizeof(GLfloat) * m_RenderDataSize * 6 * 3, m_pVerticesCoords, GL_DYNAMIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, m_VboIds[1]);
glBufferData(GL_ARRAY_BUFFER, sizeof(GLfloat) * m_RenderDataSize * 6 * 2, m_pTextureCoords, GL_DYNAMIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, m_VboIds[0]);
glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(GLfloat) * m_RenderDataSize * 6 * 3, m_pVerticesCoords);
glBindBuffer(GL_ARRAY_BUFFER, m_VboIds[1]);
glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(GLfloat) * m_RenderDataSize * 6 * 2, m_pTextureCoords);
if(m_VaoId == GL_NONE)
glGenVertexArrays(1, &m_VaoId);
glBindVertexArray(m_VaoId);
glBindBuffer(GL_ARRAY_BUFFER, m_VboIds[0]);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(GLfloat), (const void *) 0);
glBindBuffer(GL_ARRAY_BUFFER, GL_NONE);
glBindBuffer(GL_ARRAY_BUFFER, m_VboIds[1]);
glEnableVertexAttribArray(1);
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 2 * sizeof(GLfloat), (const void *) 0);
glBindBuffer(GL_ARRAY_BUFFER, GL_NONE);
glBindVertexArray(GL_NONE);
// Use the program object
glUseProgram(m_ProgramObj);
glBindVertexArray(m_VaoId);
GLUtils::setMat4(m_ProgramObj, "u_MVPMatrix", m_MVPMatrix);
GLUtils::setFloat(m_ProgramObj, "drawType", 1.0f);
glDrawArrays(GL_TRIANGLES, 0, m_RenderDataSize * 6);
GLUtils::setFloat(m_ProgramObj, "drawType", 2.0f);
glDrawArrays(GL_LINES, 0, m_RenderDataSize * 6);
void AudioVisualRender::UpdateAudioFrame(AudioFrame *audioFrame) {
if(audioFrame != nullptr) {
ByteFlowPrintD("AudioVisualRender::UpdateAudioFrame audioFrame->dataSize=%d", audioFrame->dataSize);
std::unique_lock<std::mutex> lock(m_Mutex);
if(m_pAudioBuffer != nullptr && m_pAudioBuffer->dataSize != audioFrame->dataSize) {
delete m_pAudioBuffer;
m_pAudioBuffer = nullptr;
delete [] m_pTextureCoords;
m_pTextureCoords = nullptr;
delete [] m_pVerticesCoords;
m_pVerticesCoords = nullptr;
if(m_pAudioBuffer == nullptr) {
m_pAudioBuffer = new AudioFrame(audioFrame->data, audioFrame->dataSize);
m_RenderDataSize = m_pAudioBuffer->dataSize / RESAMPLE_LEVEL;
m_pVerticesCoords = new vec3[m_RenderDataSize * 6]; //(x,y,z) * 6 points
m_pTextureCoords = new vec2[m_RenderDataSize * 6]; //(x,y) * 6 points
} else {
memcpy(m_pAudioBuffer->data, audioFrame->data, audioFrame->dataSize);
lock.unlock();
//创建和更新条状图的网格，这里一帧音频数据太大，进行了采样
void AudioVisualRender::UpdateMesh() {
float dy = 0.25f / MAX_AUDIO_LEVEL;
float dx = 1.0f / m_RenderDataSize;
for (int i = 0; i < m_RenderDataSize; ++i) {
int index = i * RESAMPLE_LEVEL; //RESAMPLE_LEVEL 表示采样间隔
short *pValue = (short *)(m_pAudioBuffer->data + index);
float y = *pValue * dy;
y = y < 0 ? y : -y;
vec2 p1(i * dx, 0 + 1.0f);
vec2 p2(i * dx, y + 1.0f);
vec2 p3((i + 1) * dx, y + 1.0f);
vec2 p4((i + 1) * dx, 0 + 1.0f);
m_pTextureCoords[i * 6 + 0] = p1;
m_pTextureCoords[i * 6 + 1] = p2;
m_pTextureCoords[i * 6 + 2] = p4;
m_pTextureCoords[i * 6 + 3] = p4;
m_pTextureCoords[i * 6 + 4] = p2;
m_pTextureCoords[i * 6 + 5] = p3;
m_pVerticesCoords[i * 6 + 0] = GLUtils::texCoordToVertexCoord(p1);
m_pVerticesCoords[i * 6 + 1] = GLUtils::texCoordToVertexCoord(p2);
m_pVerticesCoords[i * 6 + 2] = GLUtils::texCoordToVertexCoord(p4);
m_pVerticesCoords[i * 6 + 3] = GLUtils::texCoordToVertexCoord(p4);
m_pVerticesCoords[i * 6 + 4] = GLUtils::texCoordToVertexCoord(p2);
m_pVerticesCoords[i * 6 + 5] = GLUtils::texCoordToVertexCoord(p3);
void AudioVisualRender::Init() {
m_VaoId = GL_NONE;
m_pTextureCoords = nullptr;
m_pVerticesCoords = nullptr;
memset(m_VboIds, 0, sizeof(GLuint) * 2);
m_pAudioBuffer = nullptr;
//释放内存
void AudioVisualRender::UnInit() {
if (m_pAudioBuffer != nullptr) {
delete m_pAudioBuffer;
m_pAudioBuffer = nullptr;
if (m_pTextureCoords != nullptr) {
delete [] m_pTextureCoords;
m_pTextureCoords = nullptr;
if (m_pVerticesCoords != nullptr) {
delete [] m_pVerticesCoords;
m_pVerticesCoords = nullptr;
