--- a/decoders/mp3.c	Tue Feb 12 03:07:37 2002 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,280 +0,0 @@
-/*
- * SDL_sound -- An abstract sound format decoding API.
- * Copyright (C) 2001  Ryan C. Gordon.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-/*
- * MPEG-1 Layer 3, or simply, "MP3", decoder for SDL_sound.
- *
- * This driver handles all those highly compressed songs you stole through
- *  Napster.  :)  It depends on the SMPEG library for decoding, which can
- *  be grabbed from: http://www.lokigames.com/development/smpeg.php3
- *
- * This should also be able to extract the audio stream from an MPEG movie.
- *
- * Please see the file COPYING in the source's root directory.
- *
- *  This file written by Ryan C. Gordon. (icculus@clutteredmind.org)
- */
-
-#if HAVE_CONFIG_H
-#  include <config.h>
-#endif
-
-#ifdef SOUND_SUPPORTS_MP3
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-
-#include "SDL_sound.h"
-
-#define __SDL_SOUND_INTERNAL__
-#include "SDL_sound_internal.h"
-
-#include "smpeg.h"
-#include "extra_rwops.h"
-
-
-static int MP3_init(void);
-static void MP3_quit(void);
-static int MP3_open(Sound_Sample *sample, const char *ext);
-static void MP3_close(Sound_Sample *sample);
-static Uint32 MP3_read(Sound_Sample *sample);
-static int MP3_rewind(Sound_Sample *sample);
-
-static const char *extensions_smpeg[] = { "MP3", "MPEG", "MPG", NULL };
-const Sound_DecoderFunctions __Sound_DecoderFunctions_MP3 =
-{
-    {
-        extensions_smpeg,
-        "MPEG-1 Layer 3 audio through SMPEG",
-        "Ryan C. Gordon <icculus@clutteredmind.org>",
-        "http://www.lokigames.com/development/smpeg.php3"
-    },
-
-    MP3_init,       /*   init() method */
-    MP3_quit,       /*   quit() method */
-    MP3_open,       /*   open() method */
-    MP3_close,      /*  close() method */
-    MP3_read,       /*   read() method */
-    MP3_rewind      /* rewind() method */
-};
-
-
-static int MP3_init(void)
-{
-    return(1);  /* always succeeds. */
-} /* MP3_init */
-
-
-static void MP3_quit(void)
-{
-    /* it's a no-op. */
-} /* MP3_quit */
-
-
-static __inline__ void output_version(void)
-{
-    static int first_time = 1;
-
-    if (first_time)
-    {
-        SMPEG_version v;
-        SMPEG_VERSION(&v);
-        SNDDBG(("MP3: Compiled against SMPEG v%d.%d.%d.\n",
-                    v.major, v.minor, v.patch));
-        first_time = 0;
-    } /* if */
-} /* output_version */
-
-
-static int MP3_open(Sound_Sample *sample, const char *ext)
-{
-    SMPEG *smpeg;
-    SMPEG_Info smpeg_info;
-    SDL_AudioSpec spec;
-    Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque;
-    SDL_RWops *refCounter;
-
-    output_version();
-
-       /*
-        * If I understand things correctly, MP3 files don't really have any
-        * magic header we can check for. The MP3 player is expected to just
-        * pick the first thing that looks like a valid frame and start
-        * playing from there.
-        *
-        * So here's what we do: If the caller insists that this is really
-        * MP3 we'll take his word for it. Otherwise, use the same test as
-        * SDL_mixer does and check if the stream starts with something that
-        * looks like a frame.
-        *
-        * A frame begins with 11 bits of frame sync (all bits must be set),
-        * followed by a two-bit MPEG Audio version ID:
-        *
-        *   00 - MPEG Version 2.5 (later extension of MPEG 2)
-        *   01 - reserved
-        *   10 - MPEG Version 2 (ISO/IEC 13818-3)
-        *   11 - MPEG Version 1 (ISO/IEC 11172-3)
-        *
-        * Apparently we don't handle MPEG Version 2.5.
-        */
-    if (__Sound_strcasecmp(ext, "MP3") != 0)
-    {
-        Uint8 mp3_magic[2];
-
-        if (SDL_RWread(internal->rw, mp3_magic, sizeof (mp3_magic), 1) != 1)
-        {
-            Sound_SetError("MP3: Could not read MP3 magic.");
-            return(0);
-        } /*if */
-
-        if (mp3_magic[0] != 0xFF || (mp3_magic[1] & 0xF0) != 0xF0)
-        {
-            Sound_SetError("MP3: Not an MP3 stream.");
-            return(0);
-        } /* if */
-
-            /* !!! FIXME: If the seek fails, we'll probably miss a frame */
-        SDL_RWseek(internal->rw, -sizeof (mp3_magic), SEEK_CUR);
-    } /* if */
-
-    refCounter = RWops_RWRefCounter_new(internal->rw);
-    if (refCounter == NULL)
-    {
-        SNDDBG(("MP3: Failed to create reference counting RWops.\n"));
-        return(0);
-    } /* if */
-
-    /* replace original RWops. This is safe. Honest. :) */
-    internal->rw = refCounter;
-
-    /*
-     * increment the refcount, since SMPEG will nuke the RWops if it can't
-     *  accept the contained data...
-     */
-    RWops_RWRefCounter_addRef(refCounter);
-    smpeg = SMPEG_new_rwops(refCounter, &smpeg_info, 0);
-
-    if (SMPEG_error(smpeg))
-    {
-        Sound_SetError(SMPEG_error(smpeg));
-        SMPEG_delete(smpeg);
-        return(0);
-    } /* if */
-
-    if (!smpeg_info.has_audio)
-    {
-        Sound_SetError("MP3: No audio stream found in data.");
-        SMPEG_delete(smpeg);
-        return(0);
-    } /* if */
-
-    SNDDBG(("MP3: Accepting data stream.\n"));
-    SNDDBG(("MP3: has_audio == {%s}.\n", smpeg_info.has_audio ? "TRUE" : "FALSE"));
-    SNDDBG(("MP3: has_video == {%s}.\n", smpeg_info.has_video ? "TRUE" : "FALSE"));
-    SNDDBG(("MP3: width == (%d).\n", smpeg_info.width));
-    SNDDBG(("MP3: height == (%d).\n", smpeg_info.height));
-    SNDDBG(("MP3: current_frame == (%d).\n", smpeg_info.current_frame));
-    SNDDBG(("MP3: current_fps == (%f).\n", smpeg_info.current_fps));
-    SNDDBG(("MP3: audio_string == [%s].\n", smpeg_info.audio_string));
-    SNDDBG(("MP3: audio_current_frame == (%d).\n", smpeg_info.audio_current_frame));
-    SNDDBG(("MP3: current_offset == (%d).\n", smpeg_info.current_offset));
-    SNDDBG(("MP3: total_size == (%d).\n", smpeg_info.total_size));
-    SNDDBG(("MP3: current_time == (%f).\n", smpeg_info.current_time));
-    SNDDBG(("MP3: total_time == (%f).\n", smpeg_info.total_time));
-
-    SMPEG_enablevideo(smpeg, 0);
-    SMPEG_enableaudio(smpeg, 1);
-    SMPEG_loop(smpeg, 0);
-
-    SMPEG_wantedSpec(smpeg, &spec);
-
-        /*
-         * One of the MP3s I tried wouldn't work unless I added this line
-         * to tell SMPEG that yes, it may have the spec it wants.
-         */
-    SMPEG_actualSpec(smpeg, &spec);
-    sample->actual.format = spec.format;
-    sample->actual.rate = spec.freq;
-    sample->actual.channels = spec.channels;
-    sample->flags = SOUND_SAMPLEFLAG_NONE;
-    internal->decoder_private = smpeg;
-
-    SMPEG_play(smpeg);
-    return(1);
-} /* MP3_open */
-
-
-static void MP3_close(Sound_Sample *sample)
-{
-    Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque;
-    SMPEG_delete((SMPEG *) internal->decoder_private);
-} /* MP3_close */
-
-
-static Uint32 MP3_read(Sound_Sample *sample)
-{
-    Uint32 retval;
-    Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque;
-    SMPEG *smpeg = (SMPEG *) internal->decoder_private;
-
-        /*
-         * We have to clear the buffer because apparently SMPEG_playAudio()
-         * will mix the decoded audio with whatever's already in it. Nasty.
-         */
-    memset(internal->buffer, '\0', internal->buffer_size);
-    retval = SMPEG_playAudio(smpeg, internal->buffer, internal->buffer_size);
-    if (retval < internal->buffer_size)
-    {
-        char *errMsg = SMPEG_error(smpeg);
-        if (errMsg == NULL)
-            sample->flags |= SOUND_SAMPLEFLAG_EOF;
-        else
-        {
-            Sound_SetError(errMsg);
-            sample->flags |= SOUND_SAMPLEFLAG_ERROR;
-        } /* else */
-    } /* if */
-
-    return(retval);
-} /* MP3_read */
-
-
-static int MP3_rewind(Sound_Sample *sample)
-{
-    Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque;
-    SMPEG *smpeg = (SMPEG *) internal->decoder_private;
-    SMPEGstatus status;
-
-        /*
-         * SMPEG_rewind() really means "stop and rewind", so we may have to
-         * restart it afterwards.
-         */
-    status = SMPEG_status(smpeg);
-    SMPEG_rewind(smpeg);
-    if (status == SMPEG_PLAYING)
-        SMPEG_play(smpeg);
-    return(1);
-} /* MP3_rewind */
-
-#endif /* SOUND_SUPPORTS_MP3 */
-
-/* end of mp3.c ... */
-