Mercurial > repos > blastem
view wave.c @ 999:238141756e67
Set sprite overflow flag if we completely consume sprite rendering capacity for the line even if there is nothing left to draw. This graphical corruption in the vertical stretching scroll section. Needs hardware confirmation.
author | Michael Pavone <pavone@retrodev.com> |
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date | Sat, 30 Apr 2016 16:19:19 -0700 |
parents | 6e9d1a8c1b08 |
children | efc75ea79164 |
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/* Copyright 2013 Michael Pavone This file is part of BlastEm. BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text. */ #include "wave.h" #include <stddef.h> #include <string.h> int wave_init(FILE * f, uint32_t sample_rate, uint16_t bits_per_sample, uint16_t num_channels) { wave_header header; memcpy(header.chunk.id, "RIFF", 4); memcpy(header.chunk.format, "WAVE", 4); header.chunk.size = 0; //This will be filled in later memcpy(header.format_header.id, "fmt ", 4); header.format_header.size = sizeof(wave_header) - (sizeof(header.chunk) + sizeof(header.data_header) + sizeof(header.format_header)); header.audio_format = 1; header.num_channels = num_channels; header.sample_rate = sample_rate; header.byte_rate = sample_rate * num_channels * (bits_per_sample/8); header.block_align = num_channels * (bits_per_sample/8); header.bits_per_sample = bits_per_sample; memcpy(header.data_header.id, "data", 4); header.data_header.size = 0;//This will be filled in later; return fwrite(&header, 1, sizeof(header), f) == sizeof(header); } int wave_finalize(FILE * f) { uint32_t size = ftell(f); fseek(f, offsetof(wave_header, chunk.size), SEEK_SET); size -= 8; if (fwrite(&size, sizeof(size), 1, f) != 1) { fclose(f); return 0; } fseek(f, offsetof(wave_header, data_header.size), SEEK_SET); size -= 36; if (fwrite(&size, sizeof(size), 1, f) != 1) { fclose(f); return 0; } fclose(f); return 1; }