void Node::flush()
{
auto registeredNum = getRegisteredObjNum();
if (registeredNum == 0) {
return;
}
if (!m_fp) {
std::string path(BasePath);
#if 0
auto depth = getDepth();
auto mortonNumber = getMortonNumber();
path += "r";
uint32_t mask = 0x07 << (3 * (depth - 1));
for (uint32_t i = 1; i < depth; i++) {
auto n = mortonNumber & mask;
path += n;
mask >>= 3;
}
path += ".spcd";
fopen_s(&m_fp, path.c_str(), "wb");
IZ_ASSERT(m_fp);
// ヘッダー分空ける.
fseek(m_fp, sizeof(m_header), SEEK_SET);
m_header.magic_number = FOUR_CC('S', 'P', 'C', 'D');
m_header.version = 0;
m_header.depth = depth;
m_header.mortonNumber = mortonNumber;
#else
auto id = getId();
char tmp[10];
sprintf(tmp, "%d\0", id);
path += tmp;
path += ".spcd";
fopen_s(&m_fp, path.c_str(), "wb");
IZ_ASSERT(m_fp);
// ヘッダー分空ける.
fseek(m_fp, sizeof(m_header), SEEK_SET);
m_header.magic_number = FOUR_CC('S', 'P', 'C', 'D');
m_header.version = 0;
#endif
}
static int
read_wave_chunk(struct wave_reader *wr, wave_reader_error *error)
{
int result;
int sub1_id, sub1_len, sub2_id, sub2_len, byte_rate, block_align;
if ((result=read_int32_b(wr->fp, &sub1_id)) != 1) {
*error = result == 0 ? WR_BAD_CONTENT : WR_IO_ERROR;
return 0;
}
if (sub1_id != FOUR_CC('f','m','t',' ')) {
*error = WR_BAD_CONTENT;
return 0;
}
if ((result=read_int32_l(wr->fp, &sub1_len)) != 1) {
*error = result == 0 ? WR_BAD_CONTENT : WR_IO_ERROR;
return 0;
}
if ((result=read_int16_l(wr->fp, &wr->format)) != 1) {
*error = result == 0 ? WR_BAD_CONTENT : WR_IO_ERROR;
return 0;
}
if ((result=read_int16_l(wr->fp, &wr->num_channels)) != 1) {
*error = result == 0 ? WR_BAD_CONTENT : WR_IO_ERROR;
return 0;
}
if ((result=read_int32_l(wr->fp, &wr->sample_rate)) != 1) {
*error = result == 0 ? WR_BAD_CONTENT : WR_IO_ERROR;
return 0;
}
if ((result=read_int32_l(wr->fp, &byte_rate)) != 1) {
*error = result == 0 ? WR_BAD_CONTENT : WR_IO_ERROR;
return 0;
}
if ((result=read_int16_l(wr->fp, &block_align)) != 1) {
*error = result == 0 ? WR_BAD_CONTENT : WR_IO_ERROR;
return 0;
}
if ((result=read_int16_l(wr->fp, &wr->sample_bits)) != 1) {
*error = result == 0 ? WR_BAD_CONTENT : WR_IO_ERROR;
return 0;
}
if ((result=read_int32_b(wr->fp, &sub2_id)) != 1) {
*error = result == 0 ? WR_BAD_CONTENT : WR_IO_ERROR;
return 0;
}
if (sub2_id != FOUR_CC('d','a','t','a')) {
*error = WR_BAD_CONTENT;
return 0;
}
if ((result=read_int32_l(wr->fp, &sub2_len)) != 1) {
*error = result == 0 ? WR_BAD_CONTENT : WR_IO_ERROR;
return 0;
}
wr->num_samples = sub2_len / (wr->num_channels * wr->sample_bits / 8);
return 1;
}
struct wave_reader *
wave_reader_open(const char *filename, wave_reader_error *error)
{
int root_id, root_len, format_id;
int continue_reading = 1;
struct wave_reader *wr = NULL;
assert(filename != NULL);
assert(error != NULL);
wr = (struct wave_reader *)calloc(1, sizeof(struct wave_reader));
if (!wr) {
*error = WR_ALLOC_ERROR;
goto alloc_error;
}
wr->fp = fopen(filename, "rb");
if (!wr->fp) {
*error = WR_OPEN_ERROR;
goto open_error;
}
if (!read_int32_b(wr->fp, &root_id)) {
*error = WR_IO_ERROR;
goto reading_error;
}
if (root_id != FOUR_CC('R','I','F','F')) {
*error = WR_BAD_CONTENT;
goto reading_error;
}
if (!read_int32_l(wr->fp, &root_len)) {
*error = WR_IO_ERROR;
goto reading_error;
}
while (continue_reading) {
if (!read_int32_b(wr->fp, &format_id)) {
*error = WR_IO_ERROR;
goto reading_error;
}
switch (format_id) {
case FOUR_CC('W','A','V','E'):
if (!read_wave_chunk(wr, error)) {
goto reading_error;
}
continue_reading = 0;
break;
default:
if (!skip(wr, error)) {
goto reading_error;
}
}
}
return wr;
reading_error:
fclose(wr->fp);
open_error:
free(wr);
alloc_error:
return NULL;
}
