*rename

1 files changed, 0 insertions, 379 deletions

diff --git a/Source/3rdParty/SDL2/src/audio/emscripten/SDL_emscriptenaudio.c b/Source/3rdParty/SDL2/src/audio/emscripten/SDL_emscriptenaudio.c
deleted file mode 100644
index e519f08..0000000
--- a/Source/3rdParty/SDL2/src/audio/emscripten/SDL_emscriptenaudio.c
+++ /dev/null
@@ -1,379 +0,0 @@
-/*
-  Simple DirectMedia Layer
-  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
-
-  This software is provided 'as-is', without any express or implied
-  warranty.  In no event will the authors be held liable for any damages
-  arising from the use of this software.
-
-  Permission is granted to anyone to use this software for any purpose,
-  including commercial applications, and to alter it and redistribute it
-  freely, subject to the following restrictions:
-
-  1. The origin of this software must not be misrepresented; you must not
-     claim that you wrote the original software. If you use this software
-     in a product, an acknowledgment in the product documentation would be
-     appreciated but is not required.
-  2. Altered source versions must be plainly marked as such, and must not be
-     misrepresented as being the original software.
-  3. This notice may not be removed or altered from any source distribution.
-*/
-#include "../../SDL_internal.h"
-
-#if SDL_AUDIO_DRIVER_EMSCRIPTEN
-
-#include "SDL_audio.h"
-#include "SDL_log.h"
-#include "../SDL_audio_c.h"
-#include "SDL_emscriptenaudio.h"
-#include "SDL_assert.h"
-
-#include <emscripten/emscripten.h>
-
-static void
-FeedAudioDevice(_THIS, const void *buf, const int buflen)
-{
-    const int framelen = (SDL_AUDIO_BITSIZE(this->spec.format) / 8) * this->spec.channels;
-    EM_ASM_ARGS({
-        var numChannels = SDL2.audio.currentOutputBuffer['numberOfChannels'];
-        for (var c = 0; c < numChannels; ++c) {
-            var channelData = SDL2.audio.currentOutputBuffer['getChannelData'](c);
-            if (channelData.length != $1) {
-                throw 'Web Audio output buffer length mismatch! Destination size: ' + channelData.length + ' samples vs expected ' + $1 + ' samples!';
-            }
-
-            for (var j = 0; j < $1; ++j) {
-                channelData[j] = HEAPF32[$0 + ((j*numChannels + c) << 2) >> 2];  /* !!! FIXME: why are these shifts here? */
-            }
-        }
-    }, buf, buflen / framelen);
-}
-
-static void
-HandleAudioProcess(_THIS)
-{
-    SDL_AudioCallback callback = this->callbackspec.callback;
-    const int stream_len = this->callbackspec.size;
-
-    /* Only do something if audio is enabled */
-    if (!SDL_AtomicGet(&this->enabled) || SDL_AtomicGet(&this->paused)) {
-        if (this->stream) {
-            SDL_AudioStreamClear(this->stream);
-        }
-        return;
-    }
-
-    if (this->stream == NULL) {  /* no conversion necessary. */
-        SDL_assert(this->spec.size == stream_len);
-        callback(this->callbackspec.userdata, this->work_buffer, stream_len);
-    } else {  /* streaming/converting */
-        int got;
-        while (SDL_AudioStreamAvailable(this->stream) < ((int) this->spec.size)) {
-            callback(this->callbackspec.userdata, this->work_buffer, stream_len);
-            if (SDL_AudioStreamPut(this->stream, this->work_buffer, stream_len) == -1) {
-                SDL_AudioStreamClear(this->stream);
-                SDL_AtomicSet(&this->enabled, 0);
-                break;
-            }
-        }
-
-        got = SDL_AudioStreamGet(this->stream, this->work_buffer, this->spec.size);
-        SDL_assert((got < 0) || (got == this->spec.size));
-        if (got != this->spec.size) {
-            SDL_memset(this->work_buffer, this->spec.silence, this->spec.size);
-        }
-    }
-
-    FeedAudioDevice(this, this->work_buffer, this->spec.size);
-}
-
-static void
-HandleCaptureProcess(_THIS)
-{
-    SDL_AudioCallback callback = this->callbackspec.callback;
-    const int stream_len = this->callbackspec.size;
-
-    /* Only do something if audio is enabled */
-    if (!SDL_AtomicGet(&this->enabled) || SDL_AtomicGet(&this->paused)) {
-        SDL_AudioStreamClear(this->stream);
-        return;
-    }
-
-    EM_ASM_ARGS({
-        var numChannels = SDL2.capture.currentCaptureBuffer.numberOfChannels;
-        for (var c = 0; c < numChannels; ++c) {
-            var channelData = SDL2.capture.currentCaptureBuffer.getChannelData(c);
-            if (channelData.length != $1) {
-                throw 'Web Audio capture buffer length mismatch! Destination size: ' + channelData.length + ' samples vs expected ' + $1 + ' samples!';
-            }
-
-            if (numChannels == 1) {  /* fastpath this a little for the common (mono) case. */
-                for (var j = 0; j < $1; ++j) {
-                    setValue($0 + (j * 4), channelData[j], 'float');
-                }
-            } else {
-                for (var j = 0; j < $1; ++j) {
-                    setValue($0 + (((j * numChannels) + c) * 4), channelData[j], 'float');
-                }
-            }
-        }
-    }, this->work_buffer, (this->spec.size / sizeof (float)) / this->spec.channels);
-
-    /* okay, we've got an interleaved float32 array in C now. */
-
-    if (this->stream == NULL) {  /* no conversion necessary. */
-        SDL_assert(this->spec.size == stream_len);
-        callback(this->callbackspec.userdata, this->work_buffer, stream_len);
-    } else {  /* streaming/converting */
-        if (SDL_AudioStreamPut(this->stream, this->work_buffer, this->spec.size) == -1) {
-            SDL_AtomicSet(&this->enabled, 0);
-        }
-
-        while (SDL_AudioStreamAvailable(this->stream) >= stream_len) {
-            const int got = SDL_AudioStreamGet(this->stream, this->work_buffer, stream_len);
-            SDL_assert((got < 0) || (got == stream_len));
-            if (got != stream_len) {
-                SDL_memset(this->work_buffer, this->callbackspec.silence, stream_len);
-            }
-            callback(this->callbackspec.userdata, this->work_buffer, stream_len);  /* Send it to the app. */
-        }
-    }
-}
-
-
-static void
-EMSCRIPTENAUDIO_CloseDevice(_THIS)
-{
-    EM_ASM_({
-        if ($0) {
-            if (SDL2.capture.silenceTimer !== undefined) {
-                clearTimeout(SDL2.capture.silenceTimer);
-            }
-            if (SDL2.capture.stream !== undefined) {
-                var tracks = SDL2.capture.stream.getAudioTracks();
-                for (var i = 0; i < tracks.length; i++) {
-                    SDL2.capture.stream.removeTrack(tracks[i]);
-                }
-                SDL2.capture.stream = undefined;
-            }
-            if (SDL2.capture.scriptProcessorNode !== undefined) {
-                SDL2.capture.scriptProcessorNode.onaudioprocess = function(audioProcessingEvent) {};
-                SDL2.capture.scriptProcessorNode.disconnect();
-                SDL2.capture.scriptProcessorNode = undefined;
-            }
-            if (SDL2.capture.mediaStreamNode !== undefined) {
-                SDL2.capture.mediaStreamNode.disconnect();
-                SDL2.capture.mediaStreamNode = undefined;
-            }
-            if (SDL2.capture.silenceBuffer !== undefined) {
-                SDL2.capture.silenceBuffer = undefined
-            }
-            SDL2.capture = undefined;
-        } else {
-            if (SDL2.audio.scriptProcessorNode != undefined) {
-                SDL2.audio.scriptProcessorNode.disconnect();
-                SDL2.audio.scriptProcessorNode = undefined;
-            }
-            SDL2.audio = undefined;
-        }
-        if ((SDL2.audioContext !== undefined) && (SDL2.audio === undefined) && (SDL2.capture === undefined)) {
-            SDL2.audioContext.close();
-            SDL2.audioContext = undefined;
-        }
-    }, this->iscapture);
-
-#if 0  /* !!! FIXME: currently not used. Can we move some stuff off the SDL2 namespace? --ryan. */
-    SDL_free(this->hidden);
-#endif
-}
-
-static int
-EMSCRIPTENAUDIO_OpenDevice(_THIS, void *handle, const char *devname, int iscapture)
-{
-    SDL_bool valid_format = SDL_FALSE;
-    SDL_AudioFormat test_format;
-    int result;
-
-    /* based on parts of library_sdl.js */
-
-    /* create context (TODO: this puts stuff in the global namespace...)*/
-    result = EM_ASM_INT({
-        if(typeof(SDL2) === 'undefined') {
-            SDL2 = {};
-        }
-        if (!$0) {
-            SDL2.audio = {};
-        } else {
-            SDL2.capture = {};
-        }
-
-        if (!SDL2.audioContext) {
-            if (typeof(AudioContext) !== 'undefined') {
-                SDL2.audioContext = new AudioContext();
-            } else if (typeof(webkitAudioContext) !== 'undefined') {
-                SDL2.audioContext = new webkitAudioContext();
-            }
-        }
-        return SDL2.audioContext === undefined ? -1 : 0;
-    }, iscapture);
-    if (result < 0) {
-        return SDL_SetError("Web Audio API is not available!");
-    }
-
-    test_format = SDL_FirstAudioFormat(this->spec.format);
-    while ((!valid_format) && (test_format)) {
-        switch (test_format) {
-        case AUDIO_F32: /* web audio only supports floats */
-            this->spec.format = test_format;
-
-            valid_format = SDL_TRUE;
-            break;
-        }
-        test_format = SDL_NextAudioFormat();
-    }
-
-    if (!valid_format) {
-        /* Didn't find a compatible format :( */
-        return SDL_SetError("No compatible audio format!");
-    }
-
-    /* Initialize all variables that we clean on shutdown */
-#if 0  /* !!! FIXME: currently not used. Can we move some stuff off the SDL2 namespace? --ryan. */
-    this->hidden = (struct SDL_PrivateAudioData *)
-        SDL_malloc((sizeof *this->hidden));
-    if (this->hidden == NULL) {
-        return SDL_OutOfMemory();
-    }
-    SDL_zerop(this->hidden);
-#endif
-
-    /* limit to native freq */
-    this->spec.freq = EM_ASM_INT_V({ return SDL2.audioContext.sampleRate; });
-
-    SDL_CalculateAudioSpec(&this->spec);
-
-    if (iscapture) {
-        /* The idea is to take the capture media stream, hook it up to an
-           audio graph where we can pass it through a ScriptProcessorNode
-           to access the raw PCM samples and push them to the SDL app's
-           callback. From there, we "process" the audio data into silence
-           and forget about it. */
-
-        /* This should, strictly speaking, use MediaRecorder for capture, but
-           this API is cleaner to use and better supported, and fires a
-           callback whenever there's enough data to fire down into the app.
-           The downside is that we are spending CPU time silencing a buffer
-           that the audiocontext uselessly mixes into any output. On the
-           upside, both of those things are not only run in native code in
-           the browser, they're probably SIMD code, too. MediaRecorder
-           feels like it's a pretty inefficient tapdance in similar ways,
-           to be honest. */
-
-        EM_ASM_({
-            var have_microphone = function(stream) {
-                //console.log('SDL audio capture: we have a microphone! Replacing silence callback.');
-                if (SDL2.capture.silenceTimer !== undefined) {
-                    clearTimeout(SDL2.capture.silenceTimer);
-                    SDL2.capture.silenceTimer = undefined;
-                }
-                SDL2.capture.mediaStreamNode = SDL2.audioContext.createMediaStreamSource(stream);
-                SDL2.capture.scriptProcessorNode = SDL2.audioContext.createScriptProcessor($1, $0, 1);
-                SDL2.capture.scriptProcessorNode.onaudioprocess = function(audioProcessingEvent) {
-                    if ((SDL2 === undefined) || (SDL2.capture === undefined)) { return; }
-                    audioProcessingEvent.outputBuffer.getChannelData(0).fill(0.0);
-                    SDL2.capture.currentCaptureBuffer = audioProcessingEvent.inputBuffer;
-                    Runtime.dynCall('vi', $2, [$3]);
-                };
-                SDL2.capture.mediaStreamNode.connect(SDL2.capture.scriptProcessorNode);
-                SDL2.capture.scriptProcessorNode.connect(SDL2.audioContext.destination);
-                SDL2.capture.stream = stream;
-            };
-
-            var no_microphone = function(error) {
-                //console.log('SDL audio capture: we DO NOT have a microphone! (' + error.name + ')...leaving silence callback running.');
-            };
-
-            /* we write silence to the audio callback until the microphone is available (user approves use, etc). */
-            SDL2.capture.silenceBuffer = SDL2.audioContext.createBuffer($0, $1, SDL2.audioContext.sampleRate);
-            SDL2.capture.silenceBuffer.getChannelData(0).fill(0.0);
-            var silence_callback = function() {
-                SDL2.capture.currentCaptureBuffer = SDL2.capture.silenceBuffer;
-                Runtime.dynCall('vi', $2, [$3]);
-            };
-
-            SDL2.capture.silenceTimer = setTimeout(silence_callback, ($1 / SDL2.audioContext.sampleRate) * 1000);
-
-            if ((navigator.mediaDevices !== undefined) && (navigator.mediaDevices.getUserMedia !== undefined)) {
-                navigator.mediaDevices.getUserMedia({ audio: true, video: false }).then(have_microphone).catch(no_microphone);
-            } else if (navigator.webkitGetUserMedia !== undefined) {
-                navigator.webkitGetUserMedia({ audio: true, video: false }, have_microphone, no_microphone);
-            }
-        }, this->spec.channels, this->spec.samples, HandleCaptureProcess, this);
-    } else {
-        /* setup a ScriptProcessorNode */
-        EM_ASM_ARGS({
-            SDL2.audio.scriptProcessorNode = SDL2.audioContext['createScriptProcessor']($1, 0, $0);
-            SDL2.audio.scriptProcessorNode['onaudioprocess'] = function (e) {
-                if ((SDL2 === undefined) || (SDL2.audio === undefined)) { return; }
-                SDL2.audio.currentOutputBuffer = e['outputBuffer'];
-                Runtime.dynCall('vi', $2, [$3]);
-            };
-            SDL2.audio.scriptProcessorNode['connect'](SDL2.audioContext['destination']);
-        }, this->spec.channels, this->spec.samples, HandleAudioProcess, this);
-    }
-
-    return 0;
-}
-
-static int
-EMSCRIPTENAUDIO_Init(SDL_AudioDriverImpl * impl)
-{
-    int available;
-    int capture_available;
-
-    /* Set the function pointers */
-    impl->OpenDevice = EMSCRIPTENAUDIO_OpenDevice;
-    impl->CloseDevice = EMSCRIPTENAUDIO_CloseDevice;
-
-    impl->OnlyHasDefaultOutputDevice = 1;
-
-    /* no threads here */
-    impl->SkipMixerLock = 1;
-    impl->ProvidesOwnCallbackThread = 1;
-
-    /* check availability */
-    available = EM_ASM_INT_V({
-        if (typeof(AudioContext) !== 'undefined') {
-            return 1;
-        } else if (typeof(webkitAudioContext) !== 'undefined') {
-            return 1;
-        }
-        return 0;
-    });
-
-    if (!available) {
-        SDL_SetError("No audio context available");
-    }
-
-    capture_available = available && EM_ASM_INT_V({
-        if ((typeof(navigator.mediaDevices) !== 'undefined') && (typeof(navigator.mediaDevices.getUserMedia) !== 'undefined')) {
-            return 1;
-        } else if (typeof(navigator.webkitGetUserMedia) !== 'undefined') {
-            return 1;
-        }
-        return 0;
-    });
-
-    impl->HasCaptureSupport = capture_available ? SDL_TRUE : SDL_FALSE;
-    impl->OnlyHasDefaultCaptureDevice = capture_available ? SDL_TRUE : SDL_FALSE;
-
-    return available;
-}
-
-AudioBootStrap EMSCRIPTENAUDIO_bootstrap = {
-    "emscripten", "SDL emscripten audio driver", EMSCRIPTENAUDIO_Init, 0
-};
-
-#endif /* SDL_AUDIO_DRIVER_EMSCRIPTEN */
-
-/* vi: set ts=4 sw=4 expandtab: */