diff options
Diffstat (limited to 'sound.cpp')
-rw-r--r-- | sound.cpp | 291 |
1 files changed, 250 insertions, 41 deletions
@@ -139,31 +139,63 @@ void Scumm::processSfxQueues() { } } +#ifdef COMPRESSED_SOUND_FILE +static int compar(const void *a, const void *b) { + return ((OffsetTable *) a)->org_offset - ((OffsetTable *) b)->org_offset; +} +#endif + void Scumm::startTalkSound(uint32 offset, uint32 b, int mode) { - int num, i; + int num = 0, i; byte file_byte,file_byte_2; + int size; if (!_sfxFile) { warning("startTalkSound: SFX file is not open"); return; } - fileSeek((FILE*)_sfxFile, offset + 8, SEEK_SET); - i = 0; if (b>8) { num = (b-8)>>1; - do { - fileRead((FILE*)_sfxFile, &file_byte, sizeof(file_byte)); - fileRead((FILE*)_sfxFile, &file_byte_2, sizeof(file_byte_2)); - _mouthSyncTimes[i++] = file_byte | (file_byte_2<<8); - } while (--num); + } + +#ifdef COMPRESSED_SOUND_FILE + if (offset_table != NULL) { + OffsetTable *result, key; + + key.org_offset = offset; + result = (OffsetTable *) bsearch(&key, offset_table, num_sound_effects, sizeof(OffsetTable), compar); + if (result == NULL) { + warning("startTalkSound: did not find sound at offset %d !", offset); + return; + } + if (2 * num != result->num_tags) { + warning("startTalkSound: number of tags do not match (%d - %d) !", b, result->num_tags); + num = result->num_tags; + } + offset = result->new_offset; + size = result->compressed_size; + } else +#endif + { + offset += 8; + size = -1; + } + + fileSeek((FILE*)_sfxFile, offset, SEEK_SET); + i = 0; + while (num > 0) { + fileRead((FILE*)_sfxFile, &file_byte, sizeof(file_byte)); + fileRead((FILE*)_sfxFile, &file_byte_2, sizeof(file_byte_2)); + _mouthSyncTimes[i++] = file_byte | (file_byte_2<<8); + num--; } _mouthSyncTimes[i] = 0xFFFF; _sfxMode = mode; _curSoundPos = 0; _mouthSyncMode = true; - startSfxSound(_sfxFile); + startSfxSound(_sfxFile, size); } void Scumm::stopTalkSound() { @@ -292,7 +324,7 @@ void Scumm::talkSound(uint32 a, uint32 b, int mode) { * A mapping between roland instruments and GM instruments * is needed. */ - + void Scumm::setupSound() { SoundEngine *se = (SoundEngine*)_soundEngine; if (se) @@ -314,7 +346,7 @@ enum { }; -void Scumm::startSfxSound(void *file) { +void Scumm::startSfxSound(void *file, int file_size) { char ident[8]; int block_type; byte work[8]; @@ -322,6 +354,19 @@ void Scumm::startSfxSound(void *file) { int rate,comp; byte *data; +#ifdef COMPRESSED_SOUND_FILE + if (file_size > 0) { + data = (byte *) calloc(file_size + MAD_BUFFER_GUARD, 1); + + if (fread(data, file_size, 1, (FILE*) file) != 1) { + /* no need to free the memory since error will shut down */ + error("startSfxSound: cannot read %d bytes", size); + return; + } + playSfxSound_MP3(data, file_size); + return; + } +#endif if ( fread(ident, 8, 1, (FILE*)file) != 1) goto invalid; @@ -351,7 +396,7 @@ invalid:; warning("startSfxSound: Unsupported compression type %d", comp); return; } - + data = (byte*) malloc(size); if (data==NULL) { error("startSfxSound: out of memory"); @@ -365,10 +410,26 @@ invalid:; } for(i=0;i<size; i++) data[i] ^= 0x80; - + playSfxSound(data, size, 1000000 / (256 - rate) ); } + +#ifdef COMPRESSED_SOUND_FILE +static int get_int(FILE *f) { + int ret = 0; + for (int size = 0; size < 4; size++) { + int c = fgetc(f); + if (c == EOF) { + error("Unexpected end of file !!!"); + } + ret <<= 8; + ret |= c; + } + return ret; +} +#endif + void *Scumm::openSfxFile() { char buf[50]; FILE *file; @@ -376,12 +437,55 @@ void *Scumm::openSfxFile() { /* Try opening the file <_exe_name>.sou first, eg tentacle.sou. * That way, you can keep .sou files for multiple games in the * same directory */ +#ifdef COMPRESSED_SOUND_FILE + offset_table = NULL; + sprintf(buf, "%s%s.so3", _gameDataPath, _exe_name); + file = fopen(buf, "rb"); + if (!file) { + sprintf(buf, "%smonster.so3", _gameDataPath); + file = fopen(buf, "rb"); + } + if (file != NULL) { + /* Now load the 'offset' index in memory to be able to find the MP3 data + + The format of the .SO3 file is easy : + - number of bytes of the 'index' part + - N times the following fields (4 bytes each) : + + offset in the original sound file + + offset of the MP3 data in the .SO3 file WITHOUT taking into account + the index field and the 'size' field + + the number of 'tags' + + the size of the MP3 data + - and then N times : + + the tags + + the MP3 data + */ + int size, compressed_offset; + OffsetTable *cur; + + compressed_offset = get_int(file); + offset_table = (OffsetTable *) malloc(compressed_offset); + num_sound_effects = compressed_offset / 16; + + size = compressed_offset; + cur = offset_table; + while (size > 0) { + cur[0].org_offset = get_int(file); + cur[0].new_offset = get_int(file) + compressed_offset + 4; /* The + 4 is to take into accound the 'size' field */ + cur[0].num_tags = get_int(file); + cur[0].compressed_size = get_int(file); + size -= 4 * 4; + cur++; + } + return file; + } +#endif sprintf(buf, "%s%s.sou", _gameDataPath, _exe_name); file = fopen(buf, "rb"); if (!file) { - sprintf(buf, "%smonster.sou", _gameDataPath); - file = fopen(buf, "rb"); + sprintf(buf, "%smonster.sou", _gameDataPath); + file = fopen(buf, "rb"); } return file; } @@ -414,6 +518,40 @@ bool Scumm::isSfxFinished() { return true; } +#ifdef COMPRESSED_SOUND_FILE +void Scumm::playSfxSound_MP3(void *sound, uint32 size) { + MixerChannel *mc = allocateMixer(); + + if (!mc) { + warning("No mixer channel available"); + return; + } + + mc->type = MIXER_MP3; + mc->_sfx_sound = sound; + + mad_stream_init(&mc->sound_data.mp3.stream); + mad_frame_init(&mc->sound_data.mp3.frame); + mad_synth_init(&mc->sound_data.mp3.synth); + mc->sound_data.mp3.position = 0; + mc->sound_data.mp3.pos_in_frame = 0xFFFFFFFF; + mc->sound_data.mp3.size = size; + /* This variable is the number of samples to cut at the start of the MP3 + file. This is needed to have lip-sync as the MP3 file have some miliseconds + of blank at the start (as, I suppose, the MP3 compression algorithm need to + have some silence at the start to really be efficient and to not distort + too much the start of the sample). + + This value was found by experimenting out. If you recompress differently your + .SO3 file, you may have to change this value. + + When using Lame, it seems that the sound starts to have some volume about 50 ms + from the start of the sound => we skip about 1024 samples. + */ + mc->sound_data.mp3.silence_cut = 1024; +} +#endif + void Scumm::playSfxSound(void *sound, uint32 size, uint rate) { MixerChannel *mc = allocateMixer(); @@ -422,47 +560,118 @@ void Scumm::playSfxSound(void *sound, uint32 size, uint rate) { return; } + mc->type = MIXER_STANDARD; mc->_sfx_sound = sound; - mc->_sfx_pos = 0; - mc->_sfx_fp_speed = (1<<16) * rate / 22050; - mc->_sfx_fp_pos = 0; + mc->sound_data.standard._sfx_pos = 0; + mc->sound_data.standard._sfx_fp_speed = (1<<16) * rate / 22050; + mc->sound_data.standard._sfx_fp_pos = 0; while (size&0xFFFF0000) size>>=1, rate>>=1; - mc->_sfx_size = size * 22050 / rate; + mc->sound_data.standard._sfx_size = size * 22050 / rate; } -void MixerChannel::mix(int16 *data, uint32 len) { - int8 *s; - uint32 fp_pos, fp_speed; - - if (!_sfx_sound) - return; - if (len > _sfx_size) - len = _sfx_size; - _sfx_size -= len; +#ifdef COMPRESSED_SOUND_FILE +static inline int scale_sample(mad_fixed_t sample) +{ + /* round */ + sample += (1L << (MAD_F_FRACBITS - 16)); - s = (int8*)_sfx_sound + _sfx_pos; - fp_pos = _sfx_fp_pos; - fp_speed = _sfx_fp_speed; + /* clip */ + if (sample >= MAD_F_ONE) + sample = MAD_F_ONE - 1; + else if (sample < -MAD_F_ONE) + sample = -MAD_F_ONE; - do { - fp_pos += fp_speed; - *data++ += (*s<<6); - s += fp_pos >> 16; - fp_pos &= 0x0000FFFF; - } while (--len); + /* quantize and scale to not saturate when mixing a lot of channels */ + return sample >> (MAD_F_FRACBITS + 2 - 16); +} +#endif - _sfx_pos = s - (int8*)_sfx_sound; - _sfx_fp_speed = fp_speed; - _sfx_fp_pos = fp_pos; +void MixerChannel::mix(int16 *data, uint32 len) { + if (!_sfx_sound) + return; - if (!_sfx_size) +#ifdef COMPRESSED_SOUND_FILE + if (type == MIXER_STANDARD) { +#endif + int8 *s; + uint32 fp_pos, fp_speed; + + if (len > sound_data.standard._sfx_size) + len = sound_data.standard._sfx_size; + sound_data.standard._sfx_size -= len; + + s = (int8*)_sfx_sound + sound_data.standard._sfx_pos; + fp_pos = sound_data.standard._sfx_fp_pos; + fp_speed = sound_data.standard._sfx_fp_speed; + + do { + fp_pos += fp_speed; + *data++ += (*s<<6); + s += fp_pos >> 16; + fp_pos &= 0x0000FFFF; + } while (--len); + + sound_data.standard._sfx_pos = s - (int8*)_sfx_sound; + sound_data.standard._sfx_fp_speed = fp_speed; + sound_data.standard._sfx_fp_pos = fp_pos; + + if (!sound_data.standard._sfx_size) + clear(); +#ifdef COMPRESSED_SOUND_FILE + } else { + mad_fixed_t const *ch; + while (1) { + ch = sound_data.mp3.synth.pcm.samples[0] + sound_data.mp3.pos_in_frame; + while ((sound_data.mp3.pos_in_frame < sound_data.mp3.synth.pcm.length) && + (len > 0)) { + if (sound_data.mp3.silence_cut > 0) { + sound_data.mp3.silence_cut--; + } else { + *data++ += scale_sample(*ch++); + len--; + } + sound_data.mp3.pos_in_frame++; + } + if (len == 0) return; + + if (sound_data.mp3.position >= sound_data.mp3.size) { + clear(); + return; + } + + mad_stream_buffer(&sound_data.mp3.stream, + ((unsigned char *) _sfx_sound) + sound_data.mp3.position, + sound_data.mp3.size + MAD_BUFFER_GUARD - sound_data.mp3.position); + + if (mad_frame_decode(&sound_data.mp3.frame, &sound_data.mp3.stream) == -1) { + /* End of audio... */ + if (sound_data.mp3.stream.error == MAD_ERROR_BUFLEN) { clear(); + return; + } else if (!MAD_RECOVERABLE(sound_data.mp3.stream.error)) { + error("MAD frame decode error !"); + } + } + mad_synth_frame(&sound_data.mp3.synth, &sound_data.mp3.frame); + sound_data.mp3.pos_in_frame = 0; + sound_data.mp3.position = (unsigned char *) sound_data.mp3.stream.next_frame - (unsigned char *) _sfx_sound; + } + } +#endif } void MixerChannel::clear() { free(_sfx_sound); _sfx_sound = NULL; + +#ifdef COMPRESSED_SOUND_FILE + if (type == MIXER_MP3) { + mad_synth_finish(&sound_data.mp3.synth); + mad_frame_finish(&sound_data.mp3.frame); + mad_stream_finish(&sound_data.mp3.stream); + } +#endif } void Scumm::mixWaves(int16 *sounds, int len) { |