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48 lines
1.5 KiB
C
48 lines
1.5 KiB
C
#ifndef _OPUS_INTERLEAVE_STREAMFILE_H_
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#define _OPUS_INTERLEAVE_STREAMFILE_H_
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#include "deblock_streamfile.h"
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static void block_callback(STREAMFILE* sf, deblock_io_data* data) {
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uint32_t chunk_size = read_u32be(data->physical_offset, sf);
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//todo not ok if offset between 0 and header_size
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if (chunk_size == 0x01000080) /* header */
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chunk_size = read_u32le(data->physical_offset + 0x10, sf) + 0x08;
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else
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chunk_size += 0x08;
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data->block_size = chunk_size;
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data->data_size = data->block_size;
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}
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/* Deblocks NXOPUS streams that interleave 1 packet per stream */
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static STREAMFILE* setup_opus_interleave_streamfile(STREAMFILE* sf, off_t start_offset, int stream_number, int stream_count) {
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STREAMFILE* new_sf = NULL;
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deblock_config_t cfg = {0};
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cfg.stream_start = start_offset;
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cfg.step_start = stream_number;
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cfg.step_count = stream_count;
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{
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int i;
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off_t offset = start_offset;
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/* read full size from NXOPUS header N */
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for (i = 0; i < stream_number + 1; i++) {
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off_t start = read_s32le(offset + 0x10, sf);
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off_t size = read_s32le(offset + start + 0x04, sf);
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if (i == stream_number)
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cfg.logical_size = 0x08 + start + size;
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offset += 0x08 + start;
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}
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}
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cfg.block_callback = block_callback;
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new_sf = open_wrap_streamfile(sf);
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new_sf = open_io_deblock_streamfile_f(new_sf, &cfg);
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//new_sf = open_buffer_streamfile_f(new_sf, 0);
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return new_sf;
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}
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#endif /* _OPUS_INTERLEAVE_STREAMFILE_H_ */
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