#include "layout.h" #include "../vgmstream.h" #include "../decode.h" #include "../coding/coding.h" /* Decodes samples for blocked streams. * Data is divided into headered blocks with a bunch of data. The layout calls external helper functions * when a block is decoded, and those must parse the new block and move offsets accordingly. */ void render_vgmstream_blocked(sample_t* buffer, int32_t sample_count, VGMSTREAM* vgmstream) { int samples_written = 0; int frame_size, samples_per_frame, samples_this_block; frame_size = get_vgmstream_frame_size(vgmstream); samples_per_frame = get_vgmstream_samples_per_frame(vgmstream); samples_this_block = 0; if (vgmstream->current_block_samples) { samples_this_block = vgmstream->current_block_samples; } else if (frame_size == 0) { /* assume 4 bit */ //TODO: get_vgmstream_frame_size() really should return bits... */ samples_this_block = vgmstream->current_block_size * 2 * samples_per_frame; } else { samples_this_block = vgmstream->current_block_size / frame_size * samples_per_frame; } while (samples_written < sample_count) { int samples_to_do; if (vgmstream->loop_flag && vgmstream_do_loop(vgmstream)) { /* handle looping, readjust back to loop start values */ if (vgmstream->current_block_samples) { samples_this_block = vgmstream->current_block_samples; } else if (frame_size == 0) { /* assume 4 bit */ //TODO: get_vgmstream_frame_size() really should return bits... */ samples_this_block = vgmstream->current_block_size * 2 * samples_per_frame; } else { samples_this_block = vgmstream->current_block_size / frame_size * samples_per_frame; } continue; } if (samples_this_block < 0) { /* probably block bug or EOF, next calcs would give wrong values/segfaults/infinite loop */ VGM_LOG("layout_blocked: wrong block samples at 0x%x\n", (uint32_t)vgmstream->current_block_offset); memset(buffer + samples_written*vgmstream->channels, 0, (sample_count - samples_written) * vgmstream->channels * sizeof(sample_t)); break; } if (vgmstream->current_block_offset < 0 || vgmstream->current_block_offset == 0xFFFFFFFF) { /* probably block bug or EOF, block functions won't be able to read anything useful/infinite loop */ VGM_LOG("layout_blocked: wrong block offset found\n"); memset(buffer + samples_written*vgmstream->channels, 0, (sample_count - samples_written) * vgmstream->channels * sizeof(sample_t)); break; } samples_to_do = get_vgmstream_samples_to_do(samples_this_block, samples_per_frame, vgmstream); if (samples_to_do > sample_count - samples_written) samples_to_do = sample_count - samples_written; if (samples_to_do > 0) { /* samples_this_block = 0 is allowed (empty block, do nothing then move to next block) */ decode_vgmstream(vgmstream, samples_written, samples_to_do, buffer); } samples_written += samples_to_do; vgmstream->current_sample += samples_to_do; vgmstream->samples_into_block += samples_to_do; /* move to next block when all samples are consumed */ if (vgmstream->samples_into_block == samples_this_block /*&& vgmstream->current_sample < vgmstream->num_samples*/) { /* don't go past last block */ //todo block_update(vgmstream->next_block_offset,vgmstream); /* update since these may change each block */ frame_size = get_vgmstream_frame_size(vgmstream); samples_per_frame = get_vgmstream_samples_per_frame(vgmstream); if (vgmstream->current_block_samples) { samples_this_block = vgmstream->current_block_samples; } else if (frame_size == 0) { /* assume 4 bit */ //TODO: get_vgmstream_frame_size() really should return bits... */ samples_this_block = vgmstream->current_block_size * 2 * samples_per_frame; } else { samples_this_block = vgmstream->current_block_size / frame_size * samples_per_frame; } vgmstream->samples_into_block = 0; } } } /* helper functions to parse new block */ void block_update(off_t block_offset, VGMSTREAM* vgmstream) { switch (vgmstream->layout_type) { case layout_blocked_ast: block_update_ast(block_offset,vgmstream); break; case layout_blocked_mxch: block_update_mxch(block_offset,vgmstream); break; case layout_blocked_halpst: block_update_halpst(block_offset,vgmstream); break; case layout_blocked_xa: block_update_xa(block_offset,vgmstream); break; case layout_blocked_ea_schl: block_update_ea_schl(block_offset,vgmstream); break; case layout_blocked_ea_1snh: block_update_ea_1snh(block_offset,vgmstream); break; case layout_blocked_caf: block_update_caf(block_offset,vgmstream); break; case layout_blocked_wsi: block_update_wsi(block_offset,vgmstream); break; case layout_blocked_str_snds: block_update_str_snds(block_offset,vgmstream); break; case layout_blocked_ws_aud: block_update_ws_aud(block_offset,vgmstream); break; case layout_blocked_matx: block_update_matx(block_offset,vgmstream); break; case layout_blocked_dec: block_update_dec(block_offset,vgmstream); break; case layout_blocked_mul: block_update_mul(block_offset,vgmstream); break; case layout_blocked_gsb: block_update_gsb(block_offset,vgmstream); break; case layout_blocked_vs: block_update_vs(block_offset,vgmstream); break; case layout_blocked_xvas: block_update_xvas(block_offset,vgmstream); break; case layout_blocked_thp: block_update_thp(block_offset,vgmstream); break; case layout_blocked_filp: block_update_filp(block_offset,vgmstream); break; case layout_blocked_ivaud: block_update_ivaud(block_offset,vgmstream); break; case layout_blocked_ea_swvr: block_update_ea_swvr(block_offset,vgmstream); break; case layout_blocked_adm: block_update_adm(block_offset,vgmstream); break; case layout_blocked_bdsp: block_update_bdsp(block_offset,vgmstream); break; case layout_blocked_tra: block_update_tra(block_offset,vgmstream); break; case layout_blocked_ps2_iab: block_update_ps2_iab(block_offset,vgmstream); break; case layout_blocked_vs_str: block_update_vs_str(block_offset,vgmstream); break; case layout_blocked_rws: block_update_rws(block_offset,vgmstream); break; case layout_blocked_hwas: block_update_hwas(block_offset,vgmstream); break; case layout_blocked_ea_sns: block_update_ea_sns(block_offset,vgmstream); break; case layout_blocked_awc: block_update_awc(block_offset,vgmstream); break; case layout_blocked_vgs: block_update_vgs(block_offset,vgmstream); break; case layout_blocked_xwav: block_update_xwav(block_offset,vgmstream); break; case layout_blocked_xvag_subsong: block_update_xvag_subsong(block_offset,vgmstream); break; case layout_blocked_ea_wve_au00: block_update_ea_wve_au00(block_offset,vgmstream); break; case layout_blocked_ea_wve_ad10: block_update_ea_wve_ad10(block_offset,vgmstream); break; case layout_blocked_sthd: block_update_sthd(block_offset,vgmstream); break; case layout_blocked_h4m: block_update_h4m(block_offset,vgmstream); break; case layout_blocked_xa_aiff: block_update_xa_aiff(block_offset,vgmstream); break; case layout_blocked_vs_square: block_update_vs_square(block_offset,vgmstream); break; case layout_blocked_vid1: block_update_vid1(block_offset,vgmstream); break; case layout_blocked_ubi_sce: block_update_ubi_sce(block_offset,vgmstream); break; case layout_blocked_tt_ad: block_update_tt_ad(block_offset,vgmstream); break; default: /* not a blocked layout */ break; } } void blocked_count_samples(VGMSTREAM* vgmstream, STREAMFILE* sf, off_t offset) { int block_samples; off_t max_offset = get_streamfile_size(sf); vgmstream->next_block_offset = offset; do { block_update(vgmstream->next_block_offset, vgmstream); if (vgmstream->current_block_samples < 0 || vgmstream->current_block_size == 0xFFFFFFFF) break; if (vgmstream->current_block_samples) { block_samples = vgmstream->current_block_samples; } else { switch(vgmstream->coding_type) { case coding_PCM16_int: block_samples = pcm16_bytes_to_samples(vgmstream->current_block_size, 1); break; case coding_PCM8_int: case coding_PCM8_U_int: block_samples = pcm8_bytes_to_samples(vgmstream->current_block_size, 1); break; case coding_XBOX_IMA: block_samples = xbox_ima_bytes_to_samples(vgmstream->current_block_size, 1); break; case coding_NGC_DSP: block_samples = dsp_bytes_to_samples(vgmstream->current_block_size, 1); break; case coding_PSX: block_samples = ps_bytes_to_samples(vgmstream->current_block_size,1); break; default: VGM_LOG("BLOCKED: missing codec\n"); return; } } vgmstream->num_samples += block_samples; } while (vgmstream->next_block_offset < max_offset); block_update(offset, vgmstream); /* reset */ }