mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-19 09:55:53 +01:00
98 lines
3.2 KiB
C
98 lines
3.2 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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/* FFDL - Matrix Software wrapper [Final Fantasy Dimensions (Android/iOS)] */
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VGMSTREAM * init_vgmstream_ffdl(STREAMFILE *sf) {
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VGMSTREAM * vgmstream = NULL;
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STREAMFILE *temp_sf = NULL;
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int loop_flag = 0, is_ffdl = 0;
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int32_t num_samples = 0, loop_start_sample = 0, loop_end_sample = 0;
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off_t start_offset;
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size_t file_size;
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/* checks */
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/* .ogg/logg: probable extension for Android
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* .mp4/lmp4: probable extension for iOS
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* .bin: iOS FFDL extension
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* (extensionless): for FFDL files without names in Android .obb bigfile */
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if (!check_extensions(sf, "ogg,logg,mp4,lmp4,bin,"))
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goto fail;
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/* "FFDL" is a wrapper used in all of the game's files, that may contain standard
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* Ogg/MP4 or "mtxs" w/ loops + Ogg/MP4, and may concatenate multiple of them
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* (without size in sight), so they should be split externally first. */
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start_offset = 0x00;
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/* may start with wrapper (not split) */
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if (read_u32be(0x00,sf) == 0x4646444C) { /* "FFDL" */
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is_ffdl = 1;
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start_offset += 0x04;
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}
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/* may start with sample info (split) or after "FFDL" */
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if (read_u32be(start_offset+0x00,sf) == 0x6D747873) { /* "mtxs" */
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is_ffdl = 1;
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num_samples = read_s32le(start_offset + 0x04,sf);
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loop_start_sample = read_s32le(start_offset + 0x08,sf);
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loop_end_sample = read_s32le(start_offset + 0x0c,sf);
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loop_flag = !(loop_start_sample==0 && loop_end_sample==num_samples);
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start_offset += 0x10;
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}
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/* don't parse regular files */
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if (!is_ffdl)
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goto fail;
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file_size = get_streamfile_size(sf) - start_offset;
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if (read_u32be(start_offset + 0x00,sf) == 0x4F676753) { /* "OggS" */
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#ifdef VGM_USE_VORBIS
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temp_sf = setup_subfile_streamfile(sf, start_offset, file_size, "ogg");
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if (!temp_sf) goto fail;
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vgmstream = init_vgmstream_ogg_vorbis(temp_sf);
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if (!vgmstream) goto fail;
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#else
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goto fail;
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#endif
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}
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else if (read_u32be(start_offset + 0x04,sf) == 0x66747970) { /* "ftyp" after atom size */
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#ifdef VGM_USE_FFMPEG
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temp_sf = setup_subfile_streamfile(sf, start_offset, file_size, "mp4");
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if (!temp_sf) goto fail;
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vgmstream = init_vgmstream_mp4_aac_ffmpeg(temp_sf);
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if (!vgmstream) goto fail;
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#else
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goto fail;
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#endif
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}
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else {
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goto fail;
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}
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/* install loops */
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if (loop_flag) {
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/* num_samples is erratic (can be bigger = padded, or smaller = cut; doesn't matter for looping though) */
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//;VGM_ASSERT(vgmstream->num_samples != num_samples,
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// "FFDL: mtxs samples = %i vs num_samples = %i\n", num_samples, vgmstream->num_samples);
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//vgmstream->num_samples = num_samples;
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/* loop samples are within num_samples, and don't have encoder delay (loop_start=0 starts from encoder_delay) */
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vgmstream_force_loop(vgmstream, 1, loop_start_sample, loop_end_sample);
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}
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close_streamfile(temp_sf);
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return vgmstream;
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fail:
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close_streamfile(temp_sf);
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close_vgmstream(vgmstream);
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return NULL;
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}
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