mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-22 03:15:54 +01:00
78 lines
2.5 KiB
C
78 lines
2.5 KiB
C
#include "meta.h"
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#include "bar_streamfile.h"
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/* Guitar Hero III Mobile .bar */
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VGMSTREAM * init_vgmstream_bar(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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STREAMFILE* streamFileBAR = NULL; // don't close, this is just the source streamFile wrapped
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char filename[PATH_LIMIT];
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off_t start_offset;
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off_t ch2_start_offset;
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int loop_flag;
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int channel_count;
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long file_size;
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/* check extension, case insensitive */
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streamFile->get_name(streamFile,filename,sizeof(filename));
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if (strcasecmp("bar",filename_extension(filename))) goto fail;
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/* decryption wrapper for header reading */
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streamFileBAR = wrap_bar_STREAMFILE(streamFile);
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if (!streamFileBAR) goto fail;
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file_size = get_streamfile_size(streamFileBAR);
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/* check header */
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if (read_32bitBE(0x00,streamFileBAR) != 0x11000100 ||
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read_32bitBE(0x04,streamFileBAR) != 0x01000200) goto fail;
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if (read_32bitLE(0x50,streamFileBAR) != file_size) goto fail;
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start_offset = read_32bitLE(0x18,streamFileBAR);
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if (0x54 != start_offset) goto fail;
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ch2_start_offset = read_32bitLE(0x48,streamFileBAR);
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if (ch2_start_offset >= file_size) goto fail;
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/* build the VGMSTREAM */
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channel_count = 2;
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loop_flag = 0;
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vgmstream = allocate_vgmstream(channel_count, loop_flag);
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if (!vgmstream) goto fail;
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/* fill in the vital statistics */
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vgmstream->channels = channel_count;
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vgmstream->sample_rate = 11025;
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vgmstream->coding_type = coding_IMA;
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vgmstream->num_samples = (file_size-ch2_start_offset)*2;
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vgmstream->layout_type = layout_none;
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vgmstream->meta_type = meta_GH3_BAR;
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{
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STREAMFILE *file1, *file2;
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file1 = streamFileBAR->open(streamFileBAR,filename,STREAMFILE_DEFAULT_BUFFER_SIZE);
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if (!file1) goto fail;
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file2 = streamFileBAR->open(streamFileBAR,filename,STREAMFILE_DEFAULT_BUFFER_SIZE);
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if (!file2)
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{
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close_streamfile(file1);
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goto fail;
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}
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vgmstream->ch[0].streamfile = file1;
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vgmstream->ch[1].streamfile = file2;
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vgmstream->ch[0].channel_start_offset=
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vgmstream->ch[0].offset=start_offset;
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vgmstream->ch[1].channel_start_offset=
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vgmstream->ch[1].offset=ch2_start_offset;
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}
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// discard our decrypt wrapper, without closing the original streamfile
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free(streamFileBAR);
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return vgmstream;
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fail:
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if (streamFileBAR)
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free(streamFileBAR);
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if (vgmstream) close_vgmstream(vgmstream);
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return NULL;
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}
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