mirror of
https://github.com/OpenTTD/OpenTTD.git
synced 2024-08-29 13:36:04 +02:00
212 lines
4.9 KiB
C
212 lines
4.9 KiB
C
#include "stdafx.h"
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#include "openttd.h"
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#include "map.h"
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#include "mixer.h"
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#include "sound.h"
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#include "vehicle.h"
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#include "window.h"
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#include "viewport.h"
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#include "fileio.h"
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typedef struct FileEntry {
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uint32 file_offset;
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uint32 file_size;
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uint16 rate;
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uint8 bits_per_sample;
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uint8 channels;
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} FileEntry;
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static uint _file_count;
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static FileEntry* _files;
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#define SOUND_SLOT 31
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static void OpenBankFile(const char *filename)
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{
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uint count, i;
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uint32 size, tag;
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FileEntry *fe;
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FioOpenFile(SOUND_SLOT, filename);
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_file_count = count = FioReadDword() >> 3;
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fe = _files = calloc(sizeof(FileEntry), count);
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FioSeekTo(0, SEEK_SET);
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for (i = 0; i != count; i++) {
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fe[i].file_offset = FioReadDword();
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fe[i].file_size = FioReadDword();
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}
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for (i = 0; i != count; i++, fe++) {
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char name[255];
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FioSeekTo(fe->file_offset, SEEK_SET);
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// Check for special case, see else case
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FioReadBlock(name, FioReadByte()); // Read the name of the sound
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if (strcmp(name, "Corrupt sound") != 0) {
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FioSeekTo(12, SEEK_CUR); // Skip past RIFF header
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// Read riff tags
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for (;;) {
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tag = FioReadDword();
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size = FioReadDword();
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if (tag == ' tmf') {
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FioReadWord(); // wFormatTag
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fe->channels = FioReadWord(); // wChannels
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FioReadDword(); // samples per second
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fe->rate = 11025; // seems like all samples should be played at this rate.
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FioReadDword(); // avg bytes per second
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FioReadWord(); // alignment
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fe->bits_per_sample = FioReadByte(); // bits per sample
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FioSeekTo(size - (2 + 2 + 4 + 4 + 2 + 1), SEEK_CUR);
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} else if (tag == 'atad') {
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fe->file_size = size;
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fe->file_offset = FioGetPos() | (SOUND_SLOT << 24);
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break;
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} else {
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fe->file_size = 0;
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break;
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}
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}
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} else {
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/*
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* Special case for the jackhammer sound
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* (name in sample.cat is "Corrupt sound")
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* It's no RIFF file, but raw PCM data
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*/
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fe->channels = 1;
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fe->rate = 11025;
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fe->bits_per_sample = 8;
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fe->file_offset = FioGetPos() | (SOUND_SLOT << 24);
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}
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}
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}
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static bool SetBankSource(MixerChannel *mc, uint bank)
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{
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FileEntry *fe = &_files[bank];
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int8 *mem;
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uint i;
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if (fe->file_size == 0)
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return false;
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mem = malloc(fe->file_size); /* XXX unchecked malloc */
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FioSeekToFile(fe->file_offset);
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FioReadBlock(mem, fe->file_size);
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for (i = 0; i != fe->file_size; i++)
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mem[i] += -128; // Convert unsigned sound data to signed
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assert(fe->bits_per_sample == 8 && fe->channels == 1 && fe->file_size != 0 && fe->rate != 0);
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MxSetChannelRawSrc(mc, mem, fe->file_size, fe->rate, MX_AUTOFREE);
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return true;
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}
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bool SoundInitialize(const char *filename)
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{
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OpenBankFile(filename);
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return true;
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}
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// Low level sound player
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static void StartSound(uint sound, uint panning, uint volume)
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{
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if (volume != 0) {
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MixerChannel *mc = MxAllocateChannel(_mixer);
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if (mc == NULL)
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return;
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if (SetBankSource(mc, sound)) {
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MxSetChannelVolume(mc, volume << 8, volume << 8);
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MxActivateChannel(mc);
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}
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}
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}
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static const byte _vol_factor_by_zoom[] = {255, 190, 134};
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static const byte _sound_base_vol[] = {
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128, 90, 128, 128, 128, 128, 128, 128,
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128, 90, 90, 128, 128, 128, 128, 128,
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128, 128, 128, 80, 128, 128, 128, 128,
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128, 128, 128, 128, 128, 128, 128, 128,
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128, 128, 90, 90, 90, 128, 90, 128,
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128, 90, 128, 128, 128, 90, 128, 128,
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128, 128, 128, 128, 90, 128, 128, 128,
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128, 90, 128, 128, 128, 128, 128, 128,
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128, 128, 90, 90, 90, 128, 128, 128,
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90,
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};
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static const byte _sound_idx[] = {
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2, 3, 4, 5, 6, 7, 8, 9,
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10, 11, 12, 13, 14, 15, 16, 17,
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18, 19, 20, 21, 22, 23, 24, 25,
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26, 27, 28, 29, 30, 31, 32, 33,
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34, 35, 36, 37, 38, 39, 40, 0,
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1, 41, 42, 43, 44, 45, 46, 47,
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48, 49, 50, 51, 52, 53, 54, 55,
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56, 57, 58, 59, 60, 61, 62, 63,
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64, 65, 66, 67, 68, 69, 70, 71,
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72,
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};
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static void SndPlayScreenCoordFx(SoundFx sound, int x, int y)
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{
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Window *w;
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ViewPort *vp;
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int left;
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if (msf.effect_vol == 0)
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return;
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for (w = _windows; w != _last_window; w++) {
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if ((vp = w->viewport) != NULL &&
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IS_INSIDE_1D(x, vp->virtual_left, vp->virtual_width) &&
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IS_INSIDE_1D(y, vp->virtual_top, vp->virtual_height)) {
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left = ((x - vp->virtual_left) >> vp->zoom) + vp->left;
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StartSound(
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_sound_idx[sound],
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clamp(left / 71, 0, 8),
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(_sound_base_vol[sound] * msf.effect_vol * _vol_factor_by_zoom[vp->zoom]) >> 15
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);
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return;
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}
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}
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}
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void SndPlayTileFx(SoundFx sound, TileIndex tile)
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{
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/* emits sound from center (+ 8) of the tile */
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int x = TileX(tile) * 16 + 8;
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int y = TileY(tile) * 16 + 8;
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Point pt = RemapCoords(x, y, GetSlopeZ(x, y));
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SndPlayScreenCoordFx(sound, pt.x, pt.y);
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}
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void SndPlayVehicleFx(SoundFx sound, const Vehicle *v)
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{
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SndPlayScreenCoordFx(sound,
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(v->left_coord + v->right_coord) / 2,
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(v->top_coord + v->bottom_coord) / 2
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);
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}
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void SndPlayFx(SoundFx sound)
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{
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StartSound(
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_sound_idx[sound],
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4,
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(_sound_base_vol[sound] * msf.effect_vol) >> 7
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);
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}
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