mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-19 01:45:58 +01:00
81 lines
2.3 KiB
C
81 lines
2.3 KiB
C
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#include "meta.h"
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#include "../coding/coding.h"
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/* VA3 - Konami / Sont Atrac3 Container */
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/* PS2 DDR Supernova 2 Arcade */
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VGMSTREAM * init_vgmstream_va3(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;
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uint32_t data_size, loop_start, loop_end, codec_id;
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/* check extension, case insensitive */
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if (!check_extensions(streamFile, "va3"))
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goto fail;
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if (read_32bitBE(0x00, streamFile) != 0x21334156) /* "!3AV" */
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goto fail;
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/* va3 header */
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start_offset = 0x800;
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data_size = read_32bitLE(0x04, streamFile);// get_streamfile_size(streamFile) - start_offset;
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// pretty sure 0x4 LE 32 bit is some sort of filesize...
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loop_flag = 0;
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//0x18 is 1... what is this?
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channel_count = 2;
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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(0x14, streamFile);
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vgmstream->num_samples = read_32bitLE(0x08, streamFile);
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vgmstream->channels = channel_count;
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vgmstream->meta_type = meta_VA3;
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loop_start = 0;
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loop_end = 0;
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#ifdef VGM_USE_FFMPEG
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{
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ffmpeg_codec_data *ffmpeg_data = NULL;
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uint8_t buf[200];
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int32_t bytes, samples_size = 1024, block_size, encoder_delay, joint_stereo;
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block_size = 0xC0 * vgmstream->channels;
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//max_samples = (data_size / block_size) * samples_size;
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encoder_delay = 0x0;
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joint_stereo = 0;
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/* make a fake riff so FFmpeg can parse the ATRAC3 */
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bytes = ffmpeg_make_riff_atrac3(buf, 200, vgmstream->num_samples, data_size, vgmstream->channels, vgmstream->sample_rate, block_size, joint_stereo, encoder_delay);
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if (bytes <= 0) goto fail;
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ffmpeg_data = init_ffmpeg_header_offset(streamFile, buf, bytes, start_offset, data_size);
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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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//vgmstream->num_samples = max_samples;
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if (loop_flag) {
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vgmstream->loop_start_sample = (loop_start / block_size) * samples_size;
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vgmstream->loop_end_sample = (loop_end / block_size) * samples_size;
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}
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}
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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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