mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-14 23:52:53 +01:00
347 lines
13 KiB
C
347 lines
13 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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#include "../layout/layout.h"
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#include "../util.h"
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/* known GENH types */
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typedef enum {
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PSX = 0, /* PSX ADPCM */
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XBOX = 1, /* XBOX IMA ADPCM */
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NGC_DTK = 2, /* NGC ADP/DTK ADPCM */
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PCM16BE = 3, /* 16bit big endian PCM */
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PCM16LE = 4, /* 16bit little endian PCM */
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PCM8 = 5, /* 8bit PCM */
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SDX2 = 6, /* SDX2 (3D0 games) */
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DVI_IMA = 7, /* DVI IMA ADPCM */
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MPEG = 8, /* MPEG (MP3) */
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IMA = 9, /* IMA ADPCM */
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AICA = 10, /* AICA ADPCM (dreamcast) */
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MSADPCM = 11, /* MS ADPCM (windows) */
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NGC_DSP = 12, /* NGC DSP (GC) */
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PCM8_U_int = 13, /* 8bit unsigned PCM (interleaved) */
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PSX_bf = 14, /* PSX ADPCM bad flagged */
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MS_IMA = 15, /* Microsoft IMA ADPCM */
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PCM8_U = 16, /* 8bit unsigned PCM */
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APPLE_IMA4 = 17, /* Apple Quicktime 4-bit IMA ADPCM */
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ATRAC3 = 18, /* raw ATRAC3 */
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ATRAC3PLUS = 19, /* raw ATRAC3PLUS */
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XMA1 = 20, /* raw XMA1 */
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XMA2 = 21, /* raw XMA2 */
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FFMPEG = 22, /* any headered FFmpeg format */
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} genh_type;
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/* GENH is an artificial "generic" header for headerless streams */
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VGMSTREAM * init_vgmstream_genh(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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int channel_count, loop_flag, sample_rate, interleave;
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int32_t num_samples = 0, loop_start, loop_end, skip_samples = 0;
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int32_t start_offset, header_size;
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off_t datasize = 0;
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int32_t coef[2];
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int32_t coef_splitted[2];
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int32_t dsp_interleave_type;
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int32_t coef_type;
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int skip_samples_mode, atrac3_mode, xma_mode;
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int i, j;
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coding_t coding;
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genh_type type;
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/* check extension, case insensitive */
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if (!check_extensions(streamFile,"genh")) goto fail;
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/* check header magic */
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if (read_32bitBE(0x0,streamFile) != 0x47454e48) goto fail;
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channel_count = read_32bitLE(0x4,streamFile);
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if (channel_count < 1) goto fail;
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type = read_32bitLE(0x18,streamFile);
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/* type to coding conversion */
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switch (type) {
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case PSX: coding = coding_PSX; break;
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case XBOX: coding = coding_XBOX; break;
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case NGC_DTK: coding = coding_NGC_DTK; break;
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case PCM16BE: coding = coding_PCM16BE; break;
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case PCM16LE: coding = coding_PCM16LE; break;
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case PCM8: coding = coding_PCM8; break;
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case SDX2: coding = coding_SDX2; break;
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case DVI_IMA: coding = coding_DVI_IMA; break;
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#ifdef VGM_USE_MPEG
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case MPEG: coding = coding_MPEG_layer3; break; /* we later find out exactly which */
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#endif
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case IMA: coding = coding_IMA; break;
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case AICA: coding = coding_AICA; break;
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case MSADPCM: coding = coding_MSADPCM; break;
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case NGC_DSP: coding = coding_NGC_DSP; break;
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case PCM8_U_int: coding = coding_PCM8_U_int; break;
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case PSX_bf: coding = coding_PSX_badflags; break;
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case MS_IMA: coding = coding_MS_IMA; break;
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case PCM8_U: coding = coding_PCM8_U; break;
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case APPLE_IMA4: coding = coding_APPLE_IMA4; break;
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#ifdef VGM_USE_FFMPEG
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case ATRAC3:
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case ATRAC3PLUS:
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case XMA1:
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case XMA2:
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case FFMPEG: coding = coding_FFmpeg; break;
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#endif
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default:
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goto fail;
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}
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start_offset = read_32bitLE(0x1C,streamFile);
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header_size = read_32bitLE(0x20,streamFile);
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/* HACK to support old genh */
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if (header_size == 0) {
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start_offset = 0x800;
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header_size = 0x800;
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}
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/* check for audio data start past header end */
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if (header_size > start_offset) goto fail;
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interleave = read_32bitLE(0x8,streamFile);
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sample_rate = read_32bitLE(0xc,streamFile);
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loop_start = read_32bitLE(0x10,streamFile);
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loop_end = read_32bitLE(0x14,streamFile);
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coef[0] = read_32bitLE(0x24,streamFile);
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coef[1] = read_32bitLE(0x28,streamFile);
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dsp_interleave_type = read_32bitLE(0x2C,streamFile);
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/* DSP coefficient variants */
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/* bit 0 - split coefs (2 arrays) */
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/* bit 1 - little endian coefs */
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coef_type = read_32bitLE(0x30,streamFile);
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/* when using split coefficients, 2nd array is at: */
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coef_splitted[0] = read_32bitLE(0x34,streamFile);
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coef_splitted[1] = read_32bitLE(0x38,streamFile);
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/* other fields */
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num_samples = read_32bitLE(0x40,streamFile);
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skip_samples = read_32bitLE(0x44,streamFile); /* for FFmpeg based codecs */
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skip_samples_mode = read_8bit(0x48,streamFile); /* 0=autodetect, 1=force manual value @ 0x44 */
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atrac3_mode = read_8bit(0x49,streamFile); /* 0=autodetect, 1=force joint stereo, 2=force full stereo */
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xma_mode = read_8bit(0x4a,streamFile); /* 0=default (4ch = 2ch + 2ch), 1=single (4ch = 1ch + 1ch + 1ch + 1ch) */
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datasize = read_32bitLE(0x50,streamFile);
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if (!datasize)
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datasize = get_streamfile_size(streamFile)-start_offset;
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num_samples = num_samples > 0 ? num_samples : loop_end;
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loop_flag = loop_start != -1;
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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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/* codec specific */
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switch (coding) {
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case coding_PCM8_U_int:
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vgmstream->layout_type=layout_none;
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break;
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case coding_PCM16LE:
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case coding_PCM16BE:
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case coding_PCM8:
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case coding_PCM8_U:
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case coding_SDX2:
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case coding_PSX:
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case coding_PSX_badflags:
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case coding_DVI_IMA:
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case coding_IMA:
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case coding_AICA:
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case coding_APPLE_IMA4:
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vgmstream->interleave_block_size = interleave;
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if (channel_count > 1)
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{
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if (coding == coding_SDX2) {
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coding = coding_SDX2_int;
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}
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if (vgmstream->interleave_block_size==0xffffffff) {
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vgmstream->layout_type = layout_none;
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}
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else {
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vgmstream->layout_type = layout_interleave;
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if (coding == coding_DVI_IMA)
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coding = coding_DVI_IMA_int;
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if (coding == coding_IMA)
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coding = coding_IMA_int;
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}
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/* to avoid endless loops */
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if (!interleave && (
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coding == coding_PSX ||
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coding == coding_PSX_badflags ||
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coding == coding_IMA_int ||
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coding == coding_DVI_IMA_int ||
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coding == coding_SDX2_int) ) {
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goto fail;
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}
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} else {
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vgmstream->layout_type = layout_none;
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}
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/* setup adpcm */
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if (coding == coding_AICA) {
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int i;
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for (i=0;i<channel_count;i++) {
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vgmstream->ch[i].adpcm_step_index = 0x7f;
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}
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}
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break;
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case coding_MS_IMA:
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if (!interleave) goto fail; /* creates garbage */
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vgmstream->interleave_block_size = interleave;
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vgmstream->layout_type = layout_none;
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break;
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case coding_MSADPCM:
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if (channel_count > 2) goto fail;
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if (!interleave) goto fail; /* creates garbage */
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vgmstream->interleave_block_size = interleave;
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vgmstream->layout_type = layout_none;
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break;
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case coding_XBOX:
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vgmstream->layout_type = layout_none;
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break;
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case coding_NGC_DTK:
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if (channel_count != 2) goto fail;
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vgmstream->layout_type = layout_none;
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break;
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case coding_NGC_DSP:
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if (dsp_interleave_type == 0) {
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if (!interleave) goto fail;
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = interleave;
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} else if (dsp_interleave_type == 1) {
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if (!interleave) goto fail;
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vgmstream->layout_type = layout_interleave_byte;
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vgmstream->interleave_block_size = interleave;
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} else if (dsp_interleave_type == 2) {
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vgmstream->layout_type = layout_none;
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}
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/* get coefs */
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for (i=0;i<channel_count;i++) {
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int16_t (*read_16bit)(off_t , STREAMFILE*);
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/* bit 1 - little endian coefs */
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if ((coef_type & 2) == 0) {
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read_16bit = read_16bitBE;
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} else {
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read_16bit = read_16bitLE;
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}
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/* bit 0 - split coefs (2 arrays) */
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if ((coef_type & 1) == 0) {
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for (j=0;j<16;j++) {
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vgmstream->ch[i].adpcm_coef[j] = read_16bit(coef[i]+j*2,streamFile);
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}
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} else {
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for (j=0;j<8;j++) {
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vgmstream->ch[i].adpcm_coef[j*2]=read_16bit(coef[i]+j*2,streamFile);
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vgmstream->ch[i].adpcm_coef[j*2+1]=read_16bit(coef_splitted[i]+j*2,streamFile);
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}
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}
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}
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break;
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#ifdef VGM_USE_MPEG
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case coding_MPEG_layer3:
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vgmstream->layout_type = layout_none;
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vgmstream->codec_data = init_mpeg_codec_data(streamFile, start_offset, &coding, vgmstream->channels);
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if (!vgmstream->codec_data) goto fail;
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break;
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#endif
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#ifdef VGM_USE_FFMPEG
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case coding_FFmpeg: {
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ffmpeg_codec_data *ffmpeg_data = NULL;
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if (type == FFMPEG) {
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/* default FFmpeg */
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ffmpeg_data = init_ffmpeg_offset(streamFile, start_offset,datasize);
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if ( !ffmpeg_data ) goto fail;
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}
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else {
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/* fake header FFmpeg */
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uint8_t buf[200];
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int32_t bytes;
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if (type == ATRAC3) {
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int block_size = interleave;
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int joint_stereo;
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switch(atrac3_mode) {
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case 0: joint_stereo = vgmstream->channels > 1 && interleave/vgmstream->channels==0x60 ? 1 : 0; break; /* autodetect */
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case 1: joint_stereo = 1; break; /* force joint stereo */
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case 2: joint_stereo = 0; break; /* force stereo */
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default: goto fail;
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}
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bytes = ffmpeg_make_riff_atrac3(buf, 200, vgmstream->num_samples, datasize, vgmstream->channels, vgmstream->sample_rate, block_size, joint_stereo, skip_samples);
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}
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else if (type == ATRAC3PLUS) {
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int block_size = interleave;
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bytes = ffmpeg_make_riff_atrac3plus(buf, 200, vgmstream->num_samples, datasize, vgmstream->channels, vgmstream->sample_rate, block_size, skip_samples);
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}
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else if (type == XMA1) {
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int xma_stream_mode = xma_mode == 1 ? 1 : 0;
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bytes = ffmpeg_make_riff_xma1(buf, 100, vgmstream->num_samples, datasize, vgmstream->channels, vgmstream->sample_rate, xma_stream_mode);
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}
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else if (type == XMA2) {
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int block_size = interleave ? interleave : 2048;
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int block_count = datasize / block_size;
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bytes = ffmpeg_make_riff_xma2(buf, 200, vgmstream->num_samples, datasize, vgmstream->channels, vgmstream->sample_rate, block_count, block_size);
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}
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else {
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goto fail;
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}
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if (bytes <= 0) goto fail;
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ffmpeg_data = init_ffmpeg_header_offset(streamFile, buf,bytes, start_offset,datasize);
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if ( !ffmpeg_data ) goto fail;
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}
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vgmstream->codec_data = ffmpeg_data;
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vgmstream->layout_type = layout_none;
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/* force encoder delay */
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if (skip_samples_mode && skip_samples >= 0) {
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ffmpeg_set_skip_samples(ffmpeg_data, skip_samples);
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}
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break;
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}
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#endif
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default:
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break;
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}
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vgmstream->coding_type = coding;
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vgmstream->meta_type = meta_GENH;
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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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