static bool SetBankSource(MixerChannel *mc, const SoundEntry *sound)
{
assert(sound != NULL);
if (sound->file_size == 0) return false;
int8 *mem = MallocT<int8>(sound->file_size + 2);
/* Add two extra bytes so rate conversion can read these
* without reading out of its input buffer. */
mem[sound->file_size ] = 0;
mem[sound->file_size + 1] = 0;
FioSeekToFile(sound->file_slot, sound->file_offset);
FioReadBlock(mem, sound->file_size);
/* 16-bit PCM WAV files should be signed by default */
if (sound->bits_per_sample == 8) {
for (uint i = 0; i != sound->file_size; i++) {
mem[i] += -128; // Convert unsigned sound data to signed
}
}
#if TTD_ENDIAN == TTD_BIG_ENDIAN
if (sound->bits_per_sample == 16) {
uint num_samples = sound->file_size / 2;
int16 *samples = (int16 *)mem;
for (uint i = 0; i < num_samples; i++) {
samples[i] = BSWAP16(samples[i]);
}
}
#endif
assert(sound->bits_per_sample == 8 || sound->bits_per_sample == 16);
assert(sound->channels == 1);
assert(sound->file_size != 0 && sound->rate != 0);
MxSetChannelRawSrc(mc, mem, sound->file_size, sound->rate, sound->bits_per_sample == 16);
return true;
}
static void OpenBankFile(const char *filename)
{
memset(_original_sounds, 0, sizeof(_original_sounds));
/* If there is no sound file (nosound set), don't load anything */
if (filename == NULL) return;
FioOpenFile(SOUND_SLOT, filename);
size_t pos = FioGetPos();
uint count = FioReadDword();
/* The new format has the highest bit always set */
bool new_format = HasBit(count, 31);
ClrBit(count, 31);
count /= 8;
/* Simple check for the correct number of original sounds. */
if (count != ORIGINAL_SAMPLE_COUNT) {
/* Corrupt sample data? Just leave the allocated memory as those tell
* there is no sound to play (size = 0 due to calloc). Not allocating
* the memory disables valid NewGRFs that replace sounds. */
DEBUG(misc, 6, "Incorrect number of sounds in '%s', ignoring.", filename);
return;
}
FioSeekTo(pos, SEEK_SET);
for (uint i = 0; i != ORIGINAL_SAMPLE_COUNT; i++) {
_original_sounds[i].file_slot = SOUND_SLOT;
_original_sounds[i].file_offset = GB(FioReadDword(), 0, 31) + pos;
_original_sounds[i].file_size = FioReadDword();
}
for (uint i = 0; i != ORIGINAL_SAMPLE_COUNT; i++) {
SoundEntry *sound = &_original_sounds[i];
char name[255];
FioSeekTo(sound->file_offset, SEEK_SET);
/* Check for special case, see else case */
FioReadBlock(name, FioReadByte()); // Read the name of the sound
if (new_format || 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
sound->channels = FioReadWord(); // wChannels
sound->rate = FioReadDword(); // samples per second
if (!new_format) sound->rate = 11025; // seems like all old samples should be played at this rate.
FioReadDword(); // avg bytes per second
FioReadWord(); // alignment
sound->bits_per_sample = FioReadByte(); // bits per sample
FioSeekTo(size - (2 + 2 + 4 + 4 + 2 + 1), SEEK_CUR);
} else if (tag == 'atad') {
sound->file_size = size;
sound->file_slot = SOUND_SLOT;
sound->file_offset = FioGetPos();
break;
} else {
sound->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
*/
sound->channels = 1;
sound->rate = 11025;
sound->bits_per_sample = 8;
sound->file_slot = SOUND_SLOT;
sound->file_offset = FioGetPos();
}
}
}
static bool LoadPNG(SpriteLoader::Sprite *sprite, const char *filename, uint32 id, volatile bool mask)
{
png_byte header[8];
png_structp png_ptr;
png_infop info_ptr, end_info;
uint bit_depth, colour_type;
uint i, pixelsize;
SpriteLoader::CommonPixel *dst;
if (!OpenPNGFile(filename, id, mask)) return mask; // If mask is true, and file not found, continue true anyway, as it isn't a show-stopper
/* Check the header */
FioReadBlock(header, 8);
if (png_sig_cmp(header, 0, 8) != 0) return false;
/* Create the reader */
png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, (png_voidp)NULL, png_my_error, png_my_warning);
if (png_ptr == NULL) return false;
/* Create initial stuff */
info_ptr = png_create_info_struct(png_ptr);
if (info_ptr == NULL) {
png_destroy_read_struct(&png_ptr, (png_infopp)NULL, (png_infopp)NULL);
return false;
}
end_info = png_create_info_struct(png_ptr);
if (end_info == NULL) {
png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp)NULL);
return false;
}
/* Make sure that upon error, we can clean up graceful */
if (setjmp(png_jmpbuf(png_ptr))) {
png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
return false;
}
/* Read the file */
png_set_read_fn(png_ptr, NULL, png_my_read);
png_set_sig_bytes(png_ptr, 8);
png_read_info(png_ptr, info_ptr);
if (!mask) {
/* Read the text chunks */
png_textp text_ptr;
int num_text = 0;
png_get_text(png_ptr, info_ptr, &text_ptr, &num_text);
if (num_text == 0) DEBUG(misc, 0, "Warning: PNG Sprite '%s/%d.png' doesn't have x_offs and y_offs; expect graphical problems", filename, id);
for (int i = 0; i < num_text; i++) {
/* x_offs and y_offs are in the text-chunk of PNG */
if (strcmp("x_offs", text_ptr[i].key) == 0) sprite->x_offs = strtol(text_ptr[i].text, NULL, 0);
if (strcmp("y_offs", text_ptr[i].key) == 0) sprite->y_offs = strtol(text_ptr[i].text, NULL, 0);
}
sprite->height = png_get_image_height(png_ptr, info_ptr);
sprite->width = png_get_image_width(png_ptr, info_ptr);
sprite->AllocateData(sprite->width * sprite->height);
}
bit_depth = png_get_bit_depth(png_ptr, info_ptr);
colour_type = png_get_color_type(png_ptr, info_ptr);
if (mask && (bit_depth != 8 || colour_type != PNG_COLOR_TYPE_PALETTE)) {
DEBUG(misc, 0, "Ignoring mask for SpriteID %d as it isn't a 8 bit palette image", id);
return true;
}
if (!mask) {
if (bit_depth == 16) png_set_strip_16(png_ptr);
if (colour_type == PNG_COLOR_TYPE_PALETTE) {
png_set_palette_to_rgb(png_ptr);
colour_type = PNG_COLOR_TYPE_RGB;
}
if (colour_type == PNG_COLOR_TYPE_GRAY || colour_type == PNG_COLOR_TYPE_GRAY_ALPHA) {
png_set_gray_to_rgb(png_ptr);
colour_type = PNG_COLOR_TYPE_RGB;
}
if (colour_type == PNG_COLOR_TYPE_RGB) {
png_set_filler(png_ptr, 0xff, PNG_FILLER_AFTER);
}
pixelsize = sizeof(uint32);
} else {
pixelsize = sizeof(uint8);
}
png_bytep row_pointer = AllocaM(png_byte, png_get_image_width(png_ptr, info_ptr) * pixelsize);
for (i = 0; i < png_get_image_height(png_ptr, info_ptr); i++) {
png_read_row(png_ptr, row_pointer, NULL);
dst = sprite->data + i * png_get_image_width(png_ptr, info_ptr);
for (uint x = 0; x < png_get_image_width(png_ptr, info_ptr); x++) {
if (mask) {
if (row_pointer[x * sizeof(uint8)] != 0) {
dst[x].r = 0;
dst[x].g = 0;
dst[x].b = 0;
/* Alpha channel is used from the original image (to allow transparency in remap colours) */
dst[x].m = row_pointer[x * sizeof(uint8)];
}
} else {
dst[x].r = row_pointer[x * sizeof(uint32) + 0];
dst[x].g = row_pointer[x * sizeof(uint32) + 1];
dst[x].b = row_pointer[x * sizeof(uint32) + 2];
dst[x].a = row_pointer[x * sizeof(uint32) + 3];
dst[x].m = 0;
}
}
}
png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
return true;
}
static void PNGAPI png_my_read(png_structp png_ptr, png_bytep data, png_size_t length)
{
FioReadBlock(data, length);
}
