diff options
Diffstat (limited to 'src/sound.cpp')
| -rw-r--r-- | src/sound.cpp | 244 |
1 files changed, 244 insertions, 0 deletions
diff --git a/src/sound.cpp b/src/sound.cpp new file mode 100644 index 000000000..7e78b07dd --- /dev/null +++ b/src/sound.cpp @@ -0,0 +1,244 @@ +/* $Id$ */ + +#include "stdafx.h" +#include "openttd.h" +#include "functions.h" +#include "map.h" +#include "mixer.h" +#include "sound.h" +#include "vehicle.h" +#include "window.h" +#include "viewport.h" +#include "fileio.h" +#include "newgrf_sound.h" + +static uint _file_count; +static FileEntry *_files; + +#define SOUND_SLOT 63 +// Number of levels of panning per side +#define PANNING_LEVELS 16 + + +static void OpenBankFile(const char *filename) +{ + FileEntry *fe; + uint count; + uint i; + + FioOpenFile(SOUND_SLOT, filename); + count = FioReadDword() / 8; + fe = calloc(count, sizeof(*fe)); + + if (fe == NULL) { + _file_count = 0; + _files = NULL; + return; + } + + _file_count = count; + _files = fe; + + FioSeekTo(0, SEEK_SET); + + for (i = 0; i != count; i++) { + fe[i].file_offset = FioReadDword(); + fe[i].file_size = FioReadDword(); + } + + for (i = 0; i != count; i++, fe++) { + char name[255]; + + FioSeekTo(fe->file_offset, SEEK_SET); + + // Check for special case, see else case + FioReadBlock(name, FioReadByte()); // Read the name of the sound + if (strcmp(name, "Corrupt sound") != 0) { + FioSeekTo(12, SEEK_CUR); // Skip past RIFF header + + // Read riff tags + for (;;) { + uint32 tag = FioReadDword(); + uint32 size = FioReadDword(); + + if (tag == ' tmf') { + FioReadWord(); // wFormatTag + fe->channels = FioReadWord(); // wChannels + FioReadDword(); // samples per second + fe->rate = 11025; // seems like all samples should be played at this rate. + FioReadDword(); // avg bytes per second + FioReadWord(); // alignment + fe->bits_per_sample = FioReadByte(); // bits per sample + FioSeekTo(size - (2 + 2 + 4 + 4 + 2 + 1), SEEK_CUR); + } else if (tag == 'atad') { + fe->file_size = size; + fe->file_offset = FioGetPos() | (SOUND_SLOT << 24); + break; + } else { + fe->file_size = 0; + break; + } + } + } else { + /* + * Special case for the jackhammer sound + * (name in sample.cat is "Corrupt sound") + * It's no RIFF file, but raw PCM data + */ + fe->channels = 1; + fe->rate = 11025; + fe->bits_per_sample = 8; + fe->file_offset = FioGetPos() | (SOUND_SLOT << 24); + } + } +} + +uint GetNumOriginalSounds(void) +{ + return _file_count; +} + +static bool SetBankSource(MixerChannel *mc, uint bank) +{ + const FileEntry *fe; + int8 *mem; + uint i; + + if (bank >= GetNumSounds()) return false; + fe = GetSound(bank); + + if (fe->file_size == 0) return false; + + mem = malloc(fe->file_size); + if (mem == NULL) return false; + + FioSeekToFile(fe->file_offset); + FioReadBlock(mem, fe->file_size); + + for (i = 0; i != fe->file_size; i++) + mem[i] += -128; // Convert unsigned sound data to signed + + assert(fe->bits_per_sample == 8 && fe->channels == 1 && fe->file_size != 0 && fe->rate != 0); + + MxSetChannelRawSrc(mc, mem, fe->file_size, fe->rate, MX_AUTOFREE); + + return true; +} + +bool SoundInitialize(const char *filename) +{ + OpenBankFile(filename); + return true; +} + +// Low level sound player +static void StartSound(uint sound, int panning, uint volume) +{ + MixerChannel *mc; + uint left_vol, right_vol; + + if (volume == 0) return; + mc = MxAllocateChannel(); + if (mc == NULL) return; + if (!SetBankSource(mc, sound)) return; + + panning = clamp(panning, -PANNING_LEVELS, PANNING_LEVELS); + left_vol = (volume * PANNING_LEVELS) - (volume * panning); + right_vol = (volume * PANNING_LEVELS) + (volume * panning); + MxSetChannelVolume(mc, left_vol * 128 / PANNING_LEVELS, right_vol * 128 / PANNING_LEVELS); + MxActivateChannel(mc); +} + + +static const byte _vol_factor_by_zoom[] = {255, 190, 134}; + +static const byte _sound_base_vol[] = { + 128, 90, 128, 128, 128, 128, 128, 128, + 128, 90, 90, 128, 128, 128, 128, 128, + 128, 128, 128, 80, 128, 128, 128, 128, + 128, 128, 128, 128, 128, 128, 128, 128, + 128, 128, 90, 90, 90, 128, 90, 128, + 128, 90, 128, 128, 128, 90, 128, 128, + 128, 128, 128, 128, 90, 128, 128, 128, + 128, 90, 128, 128, 128, 128, 128, 128, + 128, 128, 90, 90, 90, 128, 128, 128, + 90, +}; + +static const byte _sound_idx[] = { + 2, 3, 4, 5, 6, 7, 8, 9, + 10, 11, 12, 13, 14, 15, 16, 17, + 18, 19, 20, 21, 22, 23, 24, 25, + 26, 27, 28, 29, 30, 31, 32, 33, + 34, 35, 36, 37, 38, 39, 40, 0, + 1, 41, 42, 43, 44, 45, 46, 47, + 48, 49, 50, 51, 52, 53, 54, 55, + 56, 57, 58, 59, 60, 61, 62, 63, + 64, 65, 66, 67, 68, 69, 70, 71, + 72, +}; + +void SndCopyToPool(void) +{ + uint i; + + for (i = 0; i < _file_count; i++) { + FileEntry *orig = &_files[_sound_idx[i]]; + FileEntry *fe = AllocateFileEntry(); + + *fe = *orig; + fe->volume = _sound_base_vol[i]; + fe->priority = 0; + } +} + +static void SndPlayScreenCoordFx(SoundFx sound, int x, int y) +{ + Window* const *wz; + + if (msf.effect_vol == 0) return; + + FOR_ALL_WINDOWS(wz) { + const ViewPort *vp = (*wz)->viewport; + + if (vp != NULL && + IS_INSIDE_1D(x, vp->virtual_left, vp->virtual_width) && + IS_INSIDE_1D(y, vp->virtual_top, vp->virtual_height)) { + int left = (x - vp->virtual_left); + + StartSound( + sound, + left / (vp->virtual_width / ((PANNING_LEVELS << 1) + 1)) - PANNING_LEVELS, + (GetSound(sound)->volume * msf.effect_vol * _vol_factor_by_zoom[vp->zoom]) >> 15 + ); + return; + } + } + +} + +void SndPlayTileFx(SoundFx sound, TileIndex tile) +{ + /* emits sound from center of the tile */ + int x = TileX(tile) * TILE_SIZE + TILE_SIZE / 2; + int y = TileY(tile) * TILE_SIZE + TILE_SIZE / 2; + Point pt = RemapCoords(x, y, GetSlopeZ(x, y)); + SndPlayScreenCoordFx(sound, pt.x, pt.y); +} + +void SndPlayVehicleFx(SoundFx sound, const Vehicle *v) +{ + SndPlayScreenCoordFx(sound, + (v->left_coord + v->right_coord) / 2, + (v->top_coord + v->bottom_coord) / 2 + ); +} + +void SndPlayFx(SoundFx sound) +{ + StartSound( + sound, + 0, + (GetSound(sound)->volume * msf.effect_vol) >> 7 + ); +} |