mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-13 15:21:04 +01:00
178 lines
6.6 KiB
C
178 lines
6.6 KiB
C
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#include "meta.h"
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/* .cks - Cricket Audio stream [Part Time UFO (Android), Mega Man 1-6 (Android)] */
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VGMSTREAM * init_vgmstream_cks(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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off_t start_offset;
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int loop_flag, channel_count, codec, sample_rate;
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int32_t num_samples, loop_start, loop_end;
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size_t block_size;
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/* checks */
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if (!check_extensions(streamFile, "cks"))
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goto fail;
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if (read_32bitBE(0x00,streamFile) != 0x636B6D6B) /* "ckmk" */
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goto fail;
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/* 0x04(4): platform bitflags (from LSB: iOS, Android, OS X, Windows, WP8, Linux, tvOS, undefined/ignored) */
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if (read_32bitLE(0x08,streamFile) != 0x00) /* expected file type (0x00: stream, 0x01: bank, 0x02+: unknown) */
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goto fail;
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if (read_32bitLE(0x0c,streamFile) != 0x02) /* file version (always 0x02) */
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goto fail;
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codec = read_8bit(0x10,streamFile);
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channel_count = read_8bit(0x11,streamFile);
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sample_rate = (uint16_t)read_16bitLE(0x12,streamFile);
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num_samples = read_32bitLE(0x14,streamFile) * read_16bitLE(0x1a,streamFile); /* number_of_blocks * samples_per_frame */
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block_size = read_16bitLE(0x18,streamFile);
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/* 0x1c(2): volume */
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/* 0x1e(2): pan */
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loop_start = read_32bitLE(0x20,streamFile);
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loop_end = read_32bitLE(0x24,streamFile);
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loop_flag = read_16bitLE(0x28,streamFile) != 0; /* loop count (-1 = forever) */
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/* 0x2a(2): unused? */
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start_offset = 0x2c;
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/* build the VGMSTREAM */
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vgmstream = allocate_vgmstream(channel_count, loop_flag);
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if (!vgmstream) goto fail;
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vgmstream->sample_rate = sample_rate;
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vgmstream->num_samples = num_samples;
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vgmstream->loop_start_sample = loop_start;
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vgmstream->loop_end_sample = loop_end;
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vgmstream->meta_type = meta_CKS;
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switch(codec) {
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case 0x00: /* pcm16 [from tests] */
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vgmstream->coding_type = coding_PCM16LE;
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break;
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case 0x01: /* pcm8 [from tests] */
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vgmstream->coding_type = coding_PCM8;
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break;
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case 0x02: /* adpcm [Part Time UFO (Android), Mega Man 1-6 (Android)] */
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vgmstream->coding_type = coding_MSADPCM_ck;
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/* frame_size is always 0x18 */
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break;
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default:
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goto fail;
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}
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = block_size / channel_count;
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if (!vgmstream_open_stream(vgmstream,streamFile,start_offset))
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goto fail;
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return vgmstream;
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fail:
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close_vgmstream(vgmstream);
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return NULL;
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}
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/* .ckb - Cricket Audio bank [Fire Emblem Heroes (Android), Mega Man 1-6 (Android)] */
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VGMSTREAM * init_vgmstream_ckb(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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off_t start_offset, name_offset = 0;
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int loop_flag, channel_count, codec, sample_rate;
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int32_t num_samples, loop_start, loop_end;
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size_t block_size, stream_size;
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int total_subsongs, target_subsong = streamFile->stream_index;
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/* checks */
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if (!check_extensions(streamFile, "ckb"))
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goto fail;
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if (read_32bitBE(0x00,streamFile) != 0x636B6D6B) /* "ckmk" */
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goto fail;
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/* 0x04(4): platform bitflags (from LSB: iOS, Android, OS X, Windows, WP8, Linux, tvOS, undefined/ignored) */
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if (read_32bitLE(0x08,streamFile) != 0x01) /* expected file type (0x00: stream, 0x01: bank, 0x02+: unknown) */
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goto fail;
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if (read_32bitLE(0x0c,streamFile) != 0x02) /* file version (always 0x02) */
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goto fail;
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/* 0x10: bank name (size 0x1c+1) */
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/* 0x30/34: reserved? */
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total_subsongs = read_32bitLE(0x38,streamFile);
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if (target_subsong == 0) target_subsong = 1;
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if (target_subsong < 0 || target_subsong > total_subsongs || total_subsongs < 1) goto fail;
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/* 0x3c: total_subsongs again? (ignored) */
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/* 0x40/44: unknown (ignored) */
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/* get subsong (stream offset isn't given so must calc manually) */
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{
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int i;
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off_t header_offset = 0x48;
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off_t stream_offset = 0x48 + total_subsongs*0x48;
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for (i = 0; i < total_subsongs; i++) {
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name_offset = header_offset+0x00; /* stream name (size 0x1c+1) */
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codec = read_8bit(header_offset+0x20,streamFile);
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channel_count = read_8bit(header_offset+0x21,streamFile);
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sample_rate = (uint16_t)read_16bitLE(header_offset+0x22,streamFile);
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num_samples = read_32bitLE(header_offset+0x24,streamFile) * read_16bitLE(header_offset+0x2a,streamFile); /* number_of_blocks * samples_per_frame */
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block_size = read_16bitLE(header_offset+0x28,streamFile);
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/* 0x2c(2): volume */
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/* 0x2e(2): pan */
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loop_start = read_32bitLE(header_offset+0x30,streamFile);
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loop_end = read_32bitLE(header_offset+0x34,streamFile);
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loop_flag = read_16bitLE(header_offset+0x38,streamFile) != 0; /* loop count (-1 = forever) */
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/* 0x3a(2): unused? */
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stream_size = read_32bitLE(header_offset+0x3c,streamFile);
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/* 0x40/44(4): unused? */
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if (target_subsong == (i+1))
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break;
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header_offset += 0x48;
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stream_offset += stream_size;
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}
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start_offset = stream_offset;
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}
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/* build the VGMSTREAM */
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vgmstream = allocate_vgmstream(channel_count, loop_flag);
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if (!vgmstream) goto fail;
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vgmstream->sample_rate = sample_rate;
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vgmstream->num_samples = num_samples;
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vgmstream->loop_start_sample = loop_start;
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vgmstream->loop_end_sample = loop_end;
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vgmstream->num_streams = total_subsongs;
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vgmstream->stream_size = stream_size;
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read_string(vgmstream->stream_name,0x1c+1, name_offset,streamFile);
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vgmstream->meta_type = meta_CKB;
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switch(codec) {
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case 0x00: /* pcm16 [Mega Man 1-6 (Android)] */
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vgmstream->coding_type = coding_PCM16LE;
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break;
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case 0x01: /* pcm8 */
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vgmstream->coding_type = coding_PCM8;
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break;
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case 0x02: /* adpcm [Fire Emblem Heroes (Android)] */
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vgmstream->coding_type = coding_MSADPCM_ck;
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/* frame_size is always 0x18 */
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break;
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default:
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goto fail;
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}
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = block_size / channel_count;
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if (!vgmstream_open_stream(vgmstream,streamFile,start_offset))
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goto fail;
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return vgmstream;
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fail:
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close_vgmstream(vgmstream);
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return NULL;
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}
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