Built SDL2_image and _mixer static

libsdl2_mixer/music_timidity.c

@@ -0,0 +1,220 @@
+/*
+  SDL_mixer:  An audio mixer library based on the SDL library
+  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.
+*/
+
+/* This file supports playing MIDI files with timidity */
+
+#ifdef MUSIC_MID_TIMIDITY
+
+#include "music_timidity.h"
+
+#include "timidity/timidity.h"
+
+
+typedef struct
+{
+    int play_count;
+    MidiSong *song;
+    SDL_AudioStream *stream;
+    void *buffer;
+    Sint32 buffer_size;
+} TIMIDITY_Music;
+
+
+static int TIMIDITY_Seek(void *context, double position);
+static void TIMIDITY_Delete(void *context);
+
+static int TIMIDITY_Open(const SDL_AudioSpec *spec)
+{
+    return Timidity_Init();
+}
+
+static void TIMIDITY_Close(void)
+{
+    Timidity_Exit();
+}
+
+void *TIMIDITY_CreateFromRW(SDL_RWops *src, int freesrc)
+{
+    TIMIDITY_Music *music;
+    SDL_AudioSpec spec;
+    SDL_bool need_stream = SDL_FALSE;
+
+    music = (TIMIDITY_Music *)SDL_calloc(1, sizeof(*music));
+    if (!music) {
+        SDL_OutOfMemory();
+        return NULL;
+    }
+
+    SDL_memcpy(&spec, &music_spec, sizeof(spec));
+    if (spec.channels > 2) {
+        need_stream = SDL_TRUE;
+        spec.channels = 2;
+    }
+    music->song = Timidity_LoadSong(src, &spec);
+    if (!music->song) {
+        TIMIDITY_Delete(music);
+        return NULL;
+    }
+
+    if (need_stream) {
+        music->stream = SDL_NewAudioStream(spec.format, spec.channels, spec.freq,
+                                           music_spec.format, music_spec.channels, music_spec.freq);
+        if (!music->stream) {
+            TIMIDITY_Delete(music);
+            return NULL;
+        }
+
+        music->buffer_size = spec.samples * (SDL_AUDIO_BITSIZE(spec.format) / 8) * spec.channels;
+        music->buffer = SDL_malloc(music->buffer_size);
+        if (!music->buffer) {
+            SDL_OutOfMemory();
+            TIMIDITY_Delete(music);
+            return NULL;
+        }
+    }
+
+    if (freesrc) {
+        SDL_RWclose(src);
+    }
+    return music;
+}
+
+static void TIMIDITY_SetVolume(void *context, int volume)
+{
+    TIMIDITY_Music *music = (TIMIDITY_Music *)context;
+    Timidity_SetVolume(music->song, volume);
+}
+
+static int TIMIDITY_Play(void *context, int play_count)
+{
+    TIMIDITY_Music *music = (TIMIDITY_Music *)context;
+    music->play_count = play_count;
+    Timidity_Start(music->song);
+    return TIMIDITY_Seek(music, 0.0);
+}
+
+static int TIMIDITY_GetSome(void *context, void *data, int bytes, SDL_bool *done)
+{
+    TIMIDITY_Music *music = (TIMIDITY_Music *)context;
+    int filled, amount, expected;
+
+    if (music->stream) {
+        filled = SDL_AudioStreamGet(music->stream, data, bytes);
+        if (filled != 0) {
+            return filled;
+        }
+    }
+
+    if (!music->play_count) {
+        /* All done */
+        *done = SDL_TRUE;
+        return 0;
+    }
+
+    if (music->stream) {
+        expected = music->buffer_size;
+        amount = Timidity_PlaySome(music->song, music->buffer, music->buffer_size);
+        if (SDL_AudioStreamPut(music->stream, music->buffer, amount) < 0) {
+            return -1;
+        }
+    } else {
+        expected = bytes;
+        amount = Timidity_PlaySome(music->song, data, bytes);
+    }
+        
+    if (amount < expected) {
+        if (music->play_count == 1) {
+            /* We didn't consume anything and we're done */
+            music->play_count = 0;
+        } else {
+            int play_count = -1;
+            if (music->play_count > 0) {
+                play_count = (music->play_count - 1);
+            }
+            if (TIMIDITY_Play(music, play_count) < 0) {
+                return -1;
+            }
+        }
+    }
+    if (music->stream) {
+        /* We'll pick it up from the stream next time around */
+        return 0;
+    } else {
+        /* We wrote output data */
+        return amount;
+    }
+}
+static int TIMIDITY_GetAudio(void *context, void *data, int bytes)
+{
+    return music_pcm_getaudio(context, data, bytes, MIX_MAX_VOLUME, TIMIDITY_GetSome);
+}
+
+static int TIMIDITY_Seek(void *context, double position)
+{
+    TIMIDITY_Music *music = (TIMIDITY_Music *)context;
+    Timidity_Seek(music->song, (Uint32)(position * 1000));
+    return 0;
+}
+
+static void TIMIDITY_Delete(void *context)
+{
+    TIMIDITY_Music *music = (TIMIDITY_Music *)context;
+
+    if (music->song) {
+        Timidity_FreeSong(music->song);
+    }
+    if (music->stream) {
+        SDL_FreeAudioStream(music->stream);
+    }
+    if (music->buffer) {
+        SDL_free(music->buffer);
+    }
+    SDL_free(music);
+}
+
+Mix_MusicInterface Mix_MusicInterface_TIMIDITY =
+{
+    "TIMIDITY",
+    MIX_MUSIC_TIMIDITY,
+    MUS_MID,
+    SDL_FALSE,
+    SDL_FALSE,
+
+    NULL,   /* Load */
+    TIMIDITY_Open,
+    TIMIDITY_CreateFromRW,
+    NULL,   /* CreateFromFile */
+    TIMIDITY_SetVolume,
+    TIMIDITY_Play,
+    NULL,   /* IsPlaying */
+    TIMIDITY_GetAudio,
+    TIMIDITY_Seek,
+    NULL,   /* Pause */
+    NULL,   /* Resume */
+    NULL,   /* Stop */
+    TIMIDITY_Delete,
+    TIMIDITY_Close,
+    NULL,   /* Unload */
+};
+
+#endif /* MUSIC_MID_TIMIDITY */
+
+/* vi: set ts=4 sw=4 expandtab: */