101 lines
3.2 KiB
C
101 lines
3.2 KiB
C
#include "meta.h"
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#include "../layout/layout.h"
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/* THP - Nintendo movie format found in GC/Wii games */
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VGMSTREAM* init_vgmstream_thp(STREAMFILE* sf) {
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VGMSTREAM* vgmstream = NULL;
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off_t start_offset, component_type_offset, component_data_offset;
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uint32_t version, max_audio_size;
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int num_components;
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int loop_flag, channels;
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int i;
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/* checks */
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/* .thp: actual extension
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* .dsp: fake extension?
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* (extensionless): Fragile (Wii) */
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if (!check_extensions(sf, "thp,dsp,"))
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goto fail;
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if (!is_id32be(0x00,sf, "THP\0"))
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goto fail;
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version = read_u32be(0x04,sf); /* 16b+16b major/minor */
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/* 0x08: max buffer size */
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max_audio_size = read_u32be(0x0C,sf);
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/* 0x10: fps in float */
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/* 0x14: block count */
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/* 0x18: first block size */
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/* 0x1c: data size */
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if (version != 0x00010000 && version != 0x00011000) /* v1.0 (~2002) or v1.1 (rest) */
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goto fail;
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if (max_audio_size == 0) /* no sound */
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goto fail;
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component_type_offset = read_u32be(0x20,sf);
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/* 0x24: block offsets table offset (optional, for seeking) */
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start_offset = read_u32be(0x28,sf);
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/* 0x2c: last block offset */
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/* first component "type" x16 then component headers */
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num_components = read_u32be(component_type_offset,sf);
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component_type_offset += 0x04;
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component_data_offset = component_type_offset + 0x10;
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/* parse "component" (data that goes into blocks) */
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for (i = 0; i < num_components; i++) {
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int type = read_u8(component_type_offset + i,sf);
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if (type == 0x00) { /* video */
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if (version == 0x00010000)
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component_data_offset += 0x08; /* width + height */
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else
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component_data_offset += 0x0c; /* width + height + format? */
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}
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else if (type == 0x01) { /* audio */
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/* parse below */
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#if 0
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if (version == 0x00010000)
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component_data_offset += 0x0c; /* channels + sample rate + samples */
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else
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component_data_offset += 0x10; /* channels + sample rate + samples + format? */
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#endif
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break;
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}
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else { /* 0xFF / no data (reserved as THP is meant to be extensible) */
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goto fail;
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}
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}
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/* official docs remark original's audio is adjusted to match GC's hardware rate
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* (48000 > 48043 / 32000 > 32028), not sure if that means ouput sample rate should
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* adjusted, but we can't detect Wii (non adjusted) .thp tho */
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loop_flag = 0;
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channels = read_u32be(component_data_offset + 0x00,sf);
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/* build the VGMSTREAM */
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vgmstream = allocate_vgmstream(channels,loop_flag);
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if (!vgmstream) goto fail;
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vgmstream->sample_rate = read_u32be(component_data_offset + 0x04,sf);
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vgmstream->num_samples = read_u32be(component_data_offset + 0x08,sf);
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vgmstream->meta_type = meta_THP;
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vgmstream->coding_type = coding_NGC_DSP;
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vgmstream->layout_type = layout_blocked_thp;
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/* coefs are in every block */
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vgmstream->full_block_size = read_u32be(0x18,sf); /* next block size */
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if (!vgmstream_open_stream(vgmstream,sf,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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