mirror of
https://github.com/vgmstream/vgmstream.git
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120 lines
4.0 KiB
C
120 lines
4.0 KiB
C
#include "meta.h"
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#include "../util.h"
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#include "../coding/coding.h"
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/* .OPUS - from Switch games (Lego City Undercover, Ultra SF II, Disgaea 5) */
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VGMSTREAM * init_vgmstream_nsw_opus(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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off_t start_offset;
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int loop_flag = 0, channel_count;
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int num_samples = 0, loop_start = 0, loop_end = 0;
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off_t offset = 0, data_offset;
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size_t data_size, skip = 0;
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/* check extension, case insensitive */
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if ( !check_extensions(streamFile,"opus,lopus,nop")) /* no relation to Ogg Opus */
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goto fail;
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/* variations, maybe custom */
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if (read_32bitBE(0x00,streamFile) == 0x01000080) { /* Lego City Undercover */
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offset = 0x00;
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}
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else if ((read_32bitBE(0x04,streamFile) == 0x00000000 && read_32bitBE(0x0c,streamFile) == 0x00000000) ||
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(read_32bitBE(0x04,streamFile) == 0xFFFFFFFF && read_32bitBE(0x0c,streamFile) == 0xFFFFFFFF)) { /* Disgaea 5 */
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offset = 0x10;
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loop_start = read_32bitLE(0x00,streamFile);
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loop_end = read_32bitLE(0x08,streamFile);
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}
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else if (read_32bitLE(0x04,streamFile) == 0x02) { /* Ultra Street Fighter II */
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offset = read_32bitLE(0x1c,streamFile);
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num_samples = read_32bitLE(0x00,streamFile);
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loop_start = read_32bitLE(0x08,streamFile);
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loop_end = read_32bitLE(0x0c,streamFile);
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}
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else if (read_32bitBE(0x00, streamFile) == 0x73616466 && read_32bitBE(0x08, streamFile) == 0x6f707573) { /* Xenoblade Chronicles 2 */
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offset = read_32bitLE(0x1c, streamFile);
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num_samples = read_32bitLE(0x28, streamFile);
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loop_flag = read_8bit(0x19, streamFile);
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if (loop_flag) {
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loop_start = read_32bitLE(0x2c, streamFile);
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loop_end = read_32bitLE(0x30, streamFile);
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}
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}
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else {
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offset = 0x00;
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}
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if ((uint32_t)read_32bitLE(offset + 0x00,streamFile) != 0x80000001)
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goto fail;
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channel_count = read_8bit(offset + 0x09, streamFile);
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/* 0x0a: packet size if CBR, 0 if VBR */
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data_offset = offset + read_32bitLE(offset + 0x10, streamFile);
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skip = read_32bitLE(offset + 0x1c, streamFile);
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if ((uint32_t)read_32bitLE(data_offset, streamFile) != 0x80000004)
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goto fail;
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data_size = read_32bitLE(data_offset + 0x04, streamFile);
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start_offset = data_offset + 0x08;
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loop_flag = (loop_end > 0); /* -1 when not set */
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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 = read_32bitLE(offset + 0x0c,streamFile);
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vgmstream->meta_type = meta_NSW_OPUS;
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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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#ifdef VGM_USE_FFMPEG
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{
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uint8_t buf[0x100];
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size_t bytes;
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ffmpeg_custom_config cfg;
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ffmpeg_codec_data *ffmpeg_data;
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bytes = ffmpeg_make_opus_header(buf,0x100, vgmstream->channels, skip, vgmstream->sample_rate);
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if (bytes <= 0) goto fail;
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memset(&cfg, 0, sizeof(ffmpeg_custom_config));
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cfg.type = FFMPEG_SWITCH_OPUS;
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ffmpeg_data = init_ffmpeg_config(streamFile, buf,bytes, start_offset,data_size, &cfg);
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if (!ffmpeg_data) goto fail;
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vgmstream->codec_data = ffmpeg_data;
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vgmstream->coding_type = coding_FFmpeg;
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vgmstream->layout_type = layout_none;
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if (ffmpeg_data->skipSamples <= 0) {
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ffmpeg_set_skip_samples(ffmpeg_data, skip);
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}
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if (vgmstream->num_samples == 0) {
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vgmstream->num_samples = switch_opus_get_samples(start_offset, data_size,
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vgmstream->sample_rate, streamFile) - skip;
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}
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}
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#else
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goto fail;
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#endif
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/* open the file for reading */
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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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