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authorchai <chaifix@163.com>2019-01-12 21:48:33 +0800
committerchai <chaifix@163.com>2019-01-12 21:48:33 +0800
commit8b00d67febf133e89f6a0bfabc41feed555dc4a9 (patch)
treefe48ef17c250afa40c2588300fcdb5920dba6951 /src/libjin/audio/SDL/je_sdl_source.cpp
parenta907c39756ef6b368d06643afa491c49a9044a8e (diff)
*去掉文件前缀je_
Diffstat (limited to 'src/libjin/audio/SDL/je_sdl_source.cpp')
-rw-r--r--src/libjin/audio/SDL/je_sdl_source.cpp394
1 files changed, 0 insertions, 394 deletions
diff --git a/src/libjin/audio/SDL/je_sdl_source.cpp b/src/libjin/audio/SDL/je_sdl_source.cpp
deleted file mode 100644
index 39472fd..0000000
--- a/src/libjin/audio/SDL/je_sdl_source.cpp
+++ /dev/null
@@ -1,394 +0,0 @@
-#include "../../core/je_configuration.h"
-#if defined(jin_audio) && (jin_audio == jin_audio_sdl)
-
-#include <exception>
-#include <fstream>
-#include <climits>
-
-#define STB_VORBIS_HEADER_ONLY
-#include "stb/stb_vorbis.c"
-#include "wav/wav.h"
-
-#include "../../math/je_math.h"
-#include "../../utils/je_macros.h"
-
-#include "je_sdl_audio.h"
-#include "je_sdl_source.h"
-
-using namespace JinEngine::Math;
-
-namespace JinEngine
-{
- namespace Audio
- {
- namespace SDL
- {
-
-#define BITS 8
-
- typedef struct SDLSourceCommand
- {
- typedef enum Action
- {
- Nothing = 0,
- Play,
- Stop,
- Pause,
- Resume,
- Rewind,
- SetVolume,
- SetLoop,
- SetRate,
- };
- Action action;
- union {
- int _integer;
- float _float;
- bool _boolean;
- const char* _string;
- } parameter;
-
- SDLSource* source;
- };
-
- typedef enum CHANNEL
- {
- MONO = 1, //
- STEREO = 2, //
- };
-
- typedef /*mask*/ enum STATUS
- {
- PLAYING = 1,
- PAUSED = 2,
- STOPPED = 4
- };
-
-#define Command SDLSourceCommand
-#define Action Command::Action
-#define Manager SDLSourceManager
-
- //std::queue<Command*> Manager::commands;
- //std::stack<Command*> Manager::commandsPool;
- //std::vector<SDLSource*> Manager::sources;
- Manager* Manager::manager = nullptr;
-
- SDLSource::SDLSource()
- {
- memset(&status, 0, sizeof(status));
- memset(&raw, 0, sizeof(raw));
- status.volume = 1;
- }
-
- SDLSource::SDLSource(const char* file)
- : SDLSource()
- {
- std::ifstream fs;
- fs.open(file, std::ios::binary);
- if (!fs.is_open())
- {
- fs.close();
- return;
- }
- fs.seekg(0, std::ios::end);
- int size = fs.tellg();
- fs.seekg(0, std::ios::beg);
- char* buffer = (char*)malloc(size);
- memset(buffer, 0, size);
- fs.read(buffer, size);
- fs.close();
- SDLSource(buffer, size);
- free(buffer);
- }
-
- SDLSource::SDLSource(void* mem, size_t size)
- : SDLSource()
- {
- if (mem == nullptr)
- return;
- SourceType format = getType(mem, size);
- switch (format)
- {
- case OGG: decode_ogg(mem, size); break;
- case WAV: decode_wav(mem, size); break;
- }
- }
-
- SDLSource::~SDLSource()
- {
- delete raw.data;
- raw.end = 0;
- raw.data = 0;
- }
-
- void SDLSource::decode_wav(void* mem, int size)
- {
- wav_t wav;
- if (wav_read(&wav, mem, size) == 0)
- {
- raw.data = wav.data;
- raw.length = wav.length * wav.channels * wav.bitdepth / 8;
- raw.channels = clamp<int>(wav.channels, CHANNEL::MONO, CHANNEL::STEREO);
- raw.end = (char*)raw.data + raw.length;
- raw.samplerate = wav.samplerate;
- raw.bitdepth = wav.bitdepth;
- raw.samples = wav.length;
- }
- else
- throw SourceException();
- }
-
- void SDLSource::decode_ogg(void* _mem, int size)
- {
- unsigned char* mem = (unsigned char*)_mem;
- int channels;
- int samplerate;
- short* data = (short*)raw.data;
- int samples = stb_vorbis_decode_memory(
- mem,
- size,
- &channels,
- &samplerate,
- &data
- );
- const int bitdepth = sizeof(short) * BITS;
- raw.channels = channels;
- raw.samplerate = samplerate;
- raw.data = data;
- raw.samples = samples; // һsample
- raw.length = samples * channels * sizeof(short); // һsample
- raw.bitdepth = bitdepth;
- raw.end = (char*)data + raw.length;
- }
-
-#define ActionNone(T)\
- do{\
- Command* cmd = Manager::get()->getCommand();\
- cmd->action = Action::T; \
- cmd->source = this; \
- Manager::get()->pushCommand(cmd); \
- } while (0)
-
-#define ActionArg(T, ARGT, ARG)\
- do{\
- Command* cmd = Manager::get()->getCommand();\
- cmd->action = Action::T; \
- cmd->parameter.ARGT = ARG; \
- cmd->source = this; \
- Manager::get()->pushCommand(cmd); \
- }while(0)
-
-#define ActionInt(T, INT) ActionArg(T, _integer, INT)
-#define ActionFloat(T, FLT) ActionArg(T, _float, FLT)
-#define ActionString(T, STR) ActionArg(T, _string, STR)
-#define ActionBool(T, BOL) ActionArg(T, _boolean, BOL)
-
- void SDLSource::play()
- {
- ActionNone(Play);
- }
-
- void SDLSource::stop()
- {
- ActionNone(Stop);
- }
-
- void SDLSource::pause()
- {
- ActionNone(Pause);
- }
-
- void SDLSource::resume()
- {
- ActionNone(Resume);
- }
-
- void SDLSource::rewind()
- {
- ActionNone(Rewind);
- }
-
- inline bool SDLSource::isStopped() const
- {
- return is(STOPPED);
- }
-
- bool SDLSource::isPaused() const
- {
- return is(PAUSED);
- }
-
- void SDLSource::setPitch(float pitch)
- {
- }
-
- void SDLSource::setVolume(float volume)
- {
- ActionFloat(SetVolume, clamp(volume, 0.0f, 1.0f));
- }
-
- void SDLSource::setLoop(bool loop)
- {
- ActionBool(SetLoop, loop);
- }
-
- void SDLSource::setRate(float rate)
- {
- ActionFloat(SetRate, rate);
- }
-
- inline void SDLSource::handle(
- SDLSourceManager* manager,
- SDLSourceCommand* cmd
- )
- {
- switch (cmd->action)
- {
- case Command::Action::Play:
- manager->removeSource(this);
- manager->pushSource(this);
- status.state = PLAYING;
- status.pos = 0; // rewind
- break;
- case Command::Action::Stop:
- manager->removeSource(this);
- status.state = STOPPED;
- status.pos = 0; // rewind
- break;
- case Command::Action::Pause:
- manager->removeSource(this);
- status.state = PAUSED;
- break;
- case Command::Action::Resume:
- manager->removeSource(this);
- manager->pushSource(this);
- status.state = PLAYING;
- break;
- case Command::Action::Rewind:
- status.state = PLAYING;
- status.pos = 0;
- break;
- case Command::Action::SetVolume:
- status.volume = cmd->parameter._float;
- break;
- case Command::Action::SetLoop:
- status.loop = cmd->parameter._boolean;
- break;
- }
- }
-
- inline void SDLSource::process(void* buf, size_t size)
- {
- short* buffer = (short*)buf; // AUDIO_S16SYS
- int samples = (size / SDLAUDIO_BYTEDEPTH) >> 1; // ˫
- const char L = 0, R = 1;
- for (int i = 0; i < samples; ++i)
- {
- char* source = (char*)raw.data + status.pos * (raw.bitdepth / 8) * raw.channels;
- short l = 0;
- short r = 0;
- if (raw.bitdepth == 16)
- {
- l = ((short*)source)[L] * status.volume;
- r = ((short*)source)[L + raw.channels - 1] * status.volume;
- }
- else if (raw.bitdepth == 8)
- {
- l = source[L] << 8; // << 8 Ŵ16bits
- r = source[L + raw.channels - 1] << 8;
- }
- short* sample = buffer + (i << 1);
- sample[L] = clamp(sample[L] + l, SHRT_MIN, SHRT_MAX); //
- sample[R] = clamp(sample[R] + r, SHRT_MIN, SHRT_MAX); //
- ++status.pos;
- if (status.pos > raw.samples && status.loop)
- status.pos = 0; // rewind
- else if (status.pos > raw.samples && !status.loop)
- break;
- }
- }
-
- Manager* Manager::get()
- {
- return (manager == nullptr ? manager = new Manager() : manager);
- }
-
- void Manager::processCommands()
- {
- Command* cmd = nullptr;
- SDLSource* source = nullptr;
- while (!commands.empty())
- {
- cmd = commands.front();
- if (cmd != nullptr)
- {
- source = cmd->source;
- if (source != nullptr)
- source->handle(manager, cmd);
- }
- commands.pop();
- }
- }
-
- /* AUDIO_S16SYS[size>>1] buffer */
- void Manager::processSources(void* buf, size_t size)
- {
- /* clear render buffer */
- memset(buf, 0, size);
- SDLSource* src = nullptr;
- std::vector<SDLSource*>::iterator it = sources.begin();
- for (; it != sources.end();)
- {
- src = *it;
- if (src != nullptr)
- src->process(buf, size);
- ++it;
- }
- }
-
- void Manager::removeSource(SDLSource* source)
- {
- std::vector<SDLSource*>::iterator it = sources.begin();
- for (it = sources.begin(); it != sources.end(); )
- {
- if (*it == source)
- {
- it = sources.erase(it);
- return;
- }
- ++it;
- }
- }
-
- void Manager::removeAllSource()
- {
- sources.clear();
- }
-
- void Manager::pushSource(SDLSource* source)
- {
- if (source != nullptr)
- sources.push_back(source);
- }
-
- void Manager::pushCommand(SDLSourceCommand* cmd)
- {
- commands.push(cmd);
- }
-
- Command* Manager::getCommand()
- {
- if (!commandsPool.empty())
- {
- Command* cmd = commandsPool.top();
- commandsPool.pop();
- return cmd;
- }
- return new Command();
- }
-
- } // namespace SDL
- } // namespace Audio
-} // namespace JinEngine
-
-#endif // (jin_audio) && (jin_audio == jin_audio_sdl) \ No newline at end of file