From f40bfc9267b13b54e6379dfe7539447662879d24 Mon Sep 17 00:00:00 2001 From: Sean Bartell Date: Sat, 25 Jun 2011 21:32:25 -0400 Subject: Add codecs to librbcodec. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Change-Id: Id7f4717d51ed02d67cb9f9cb3c0ada4a81843f97 Reviewed-on: http://gerrit.rockbox.org/137 Reviewed-by: Nils Wallménius Tested-by: Nils Wallménius --- lib/rbcodec/codecs/libasap/asap.c | 2273 +++++++++++++++++++++++++++++++++++++ 1 file changed, 2273 insertions(+) create mode 100644 lib/rbcodec/codecs/libasap/asap.c (limited to 'lib/rbcodec/codecs/libasap/asap.c') diff --git a/lib/rbcodec/codecs/libasap/asap.c b/lib/rbcodec/codecs/libasap/asap.c new file mode 100644 index 0000000000..1aeb843fa3 --- /dev/null +++ b/lib/rbcodec/codecs/libasap/asap.c @@ -0,0 +1,2273 @@ +/* + * asap.c - ASAP engine + * + * Copyright (C) 2005-2010 Piotr Fusik + * + * This file is part of ASAP (Another Slight Atari Player), + * see http://asap.sourceforge.net + * + * ASAP is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published + * by the Free Software Foundation; either version 2 of the License, + * or (at your option) any later version. + * + * ASAP is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * See the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with ASAP; if not, write to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "asap_internal.h" + +static byte s_memory[65536]; +static ASAP_ModuleInfo s_module_info; + +#ifdef ASAP_ONLY_INFO + +#define GET_PLAYER(name) NULL + +#else + +#define GET_PLAYER(name) GET_RESOURCE(name, obx) + +FUNC(int, ASAP_GetByte, (P(ASAP_State PTR, ast), P(int, addr))) +{ + switch (addr & 0xff1f) { + case 0xd014: + return ast _ module_info->ntsc ? 0xf : 1; + case 0xd20a: + case 0xd21a: + return PokeySound_GetRandom(ast, addr, ast _ cycle); + case 0xd20e: + return ast _ irqst; + case 0xd21e: + if (ast _ extra_pokey_mask != 0) { + /* interrupts in the extra POKEY not emulated at the moment */ + return 0xff; + } + return ast _ irqst; + case 0xd20c: + case 0xd21c: + case 0xd20f: /* just because some SAP files rely on this */ + case 0xd21f: + return 0xff; + case 0xd40b: + case 0xd41b: + return ast _ scanline_number >> 1; + default: + return dGetByte(addr); + } +} + +FUNC(void, ASAP_PutByte, (P(ASAP_State PTR, ast), P(int, addr), P(int, data))) +{ + if ((addr >> 8) == 0xd2) { + if ((addr & (ast _ extra_pokey_mask + 0xf)) == 0xe) { + ast _ irqst |= data ^ 0xff; +#define SET_TIMER_IRQ(ch) \ + if ((data & ast _ irqst & ch) != 0) { \ + if (ast _ timer##ch##_cycle == NEVER) { \ + V(int, t) = ast _ base_pokey.tick_cycle##ch; \ + while (t < ast _ cycle) \ + t += ast _ base_pokey.period_cycles##ch; \ + ast _ timer##ch##_cycle = t; \ + if (ast _ nearest_event_cycle > t) \ + ast _ nearest_event_cycle = t; \ + } \ + } \ + else \ + ast _ timer##ch##_cycle = NEVER; + SET_TIMER_IRQ(1); + SET_TIMER_IRQ(2); + SET_TIMER_IRQ(4); + } + else + PokeySound_PutByte(ast, addr, data); + } + else if ((addr & 0xff0f) == 0xd40a) { + if (ast _ cycle <= ast _ next_scanline_cycle - 8) + ast _ cycle = ast _ next_scanline_cycle - 8; + else + ast _ cycle = ast _ next_scanline_cycle + 106; + } + else if ((addr & 0xff00) == ast _ module_info->covox_addr) { + V(PokeyState PTR, pst); + addr &= 3; + if (addr == 0 || addr == 3) + pst = ADDRESSOF ast _ base_pokey; + else + pst = ADDRESSOF ast _ extra_pokey; + pst _ delta_buffer[CYCLE_TO_SAMPLE(ast _ cycle)] += (data - UBYTE(ast _ covox[addr])) << DELTA_SHIFT_COVOX; + ast _ covox[addr] = CAST(byte) (data); + } + else if ((addr & 0xff1f) == 0xd01f) { + V(int, sample) = CYCLE_TO_SAMPLE(ast _ cycle); + V(int, delta); + data &= 8; + /* NOT data - ast _ consol; reverse to the POKEY sound */ + delta = (ast _ consol - data) << DELTA_SHIFT_GTIA; + ast _ consol = data; + ast _ base_pokey.delta_buffer[sample] += delta; + ast _ extra_pokey.delta_buffer[sample] += delta; + } + else + dPutByte(addr, data); +} + +#endif /* ASAP_ONLY_INFO */ + +#define UWORD(array, index) (UBYTE(array[index]) + (UBYTE(array[(index) + 1]) << 8)) + +#ifndef ASAP_ONLY_SAP + +#ifndef ASAP_ONLY_INFO + +#ifndef JAVA +#include "players.h" +#endif + +#define CMR_BASS_TABLE_OFFSET 0x70f + +CONST_ARRAY(byte, cmr_bass_table) + 0x5C, 0x56, 0x50, 0x4D, 0x47, 0x44, 0x41, 0x3E, + 0x38, 0x35, CAST(byte) (0x88), 0x7F, 0x79, 0x73, 0x6C, 0x67, + 0x60, 0x5A, 0x55, 0x51, 0x4C, 0x48, 0x43, 0x3F, + 0x3D, 0x39, 0x34, 0x33, 0x30, 0x2D, 0x2A, 0x28, + 0x25, 0x24, 0x21, 0x1F, 0x1E +END_CONST_ARRAY; + +#endif /* ASAP_ONLY_INFO */ + +CONST_ARRAY(int, perframe2fastplay) + 312, 312 / 2, 312 / 3, 312 / 4 +END_CONST_ARRAY; + +/* Loads native module (anything except SAP) and 6502 player routine. */ +PRIVATE FUNC(abool, load_native, ( + P(ASAP_State PTR, ast), P(ASAP_ModuleInfo PTR, module_info), + P(CONST BYTEARRAY, module), P(int, module_len), P(RESOURCE, player))) +{ +#ifndef ASAP_ONLY_INFO + V(int, player_last_byte); +#endif + V(int, music_last_byte); + V(int, block_len); + if ((UBYTE(module[0]) != 0xff || UBYTE(module[1]) != 0xff) + && (module[0] != 0 || module[1] != 0)) /* some CMC and clones start with zeros */ + return FALSE; + module_info _ music = UWORD(module, 2); +#ifndef ASAP_ONLY_INFO + module_info _ player = UWORD(player, 2); + player_last_byte = UWORD(player, 4); + if (module_info _ music <= player_last_byte) + return FALSE; +#endif + music_last_byte = UWORD(module, 4); + if (module_info _ music <= 0xd7ff && music_last_byte >= 0xd000) + return FALSE; + block_len = music_last_byte + 1 - module_info _ music; + if (6 + block_len != module_len) { + V(int, info_addr); + V(int, info_len); + if (module_info _ type != ASAP_TYPE_RMT || 11 + block_len > module_len) + return FALSE; + /* allow optional info for Raster Music Tracker */ + info_addr = UWORD(module, 6 + block_len); + if (info_addr != module_info _ music + block_len) + return FALSE; + info_len = UWORD(module, 8 + block_len) + 1 - info_addr; + if (10 + block_len + info_len != module_len) + return FALSE; + } +#ifndef ASAP_ONLY_INFO + if (ast != NULL) { + COPY_ARRAY(ast _ memory, module_info _ music, module, 6, block_len); + COPY_ARRAY(ast _ memory, module_info _ player, player, 6, player_last_byte + 1 - module_info _ player); + } +#endif + return TRUE; +} + +PRIVATE FUNC(void, set_song_duration, (P(ASAP_ModuleInfo PTR, module_info), P(int, player_calls))) +{ + module_info _ durations[module_info _ songs] = TO_INT(player_calls * module_info _ fastplay * 114000.0 / 1773447); + module_info _ songs++; +} + +#define SEEN_THIS_CALL 1 +#define SEEN_BEFORE 2 +#define SEEN_REPEAT 3 + +PRIVATE FUNC(void, parse_cmc_song, (P(ASAP_ModuleInfo PTR, module_info), P(CONST BYTEARRAY, module), P(int, pos))) +{ + V(int, tempo) = UBYTE(module[0x19]); + V(int, player_calls) = 0; + V(int, rep_start_pos) = 0; + V(int, rep_end_pos) = 0; + V(int, rep_times) = 0; + NEW_ARRAY(byte, seen, 0x55); + INIT_ARRAY(seen); + while (pos >= 0 && pos < 0x55) { + V(int, p1); + V(int, p2); + V(int, p3); + if (pos == rep_end_pos && rep_times > 0) { + for (p1 = 0; p1 < 0x55; p1++) + if (seen[p1] == SEEN_THIS_CALL || seen[p1] == SEEN_REPEAT) + seen[p1] = 0; + rep_times--; + pos = rep_start_pos; + } + if (seen[pos] != 0) { + if (seen[pos] != SEEN_THIS_CALL) + module_info _ loops[module_info _ songs] = TRUE; + break; + } + seen[pos] = SEEN_THIS_CALL; + p1 = UBYTE(module[0x206 + pos]); + p2 = UBYTE(module[0x25b + pos]); + p3 = UBYTE(module[0x2b0 + pos]); + if (p1 == 0xfe || p2 == 0xfe || p3 == 0xfe) { + pos++; + continue; + } + p1 >>= 4; + if (p1 == 8) + break; + if (p1 == 9) { + pos = p2; + continue; + } + if (p1 == 0xa) { + pos -= p2; + continue; + } + if (p1 == 0xb) { + pos += p2; + continue; + } + if (p1 == 0xc) { + tempo = p2; + pos++; + continue; + } + if (p1 == 0xd) { + pos++; + rep_start_pos = pos; + rep_end_pos = pos + p2; + rep_times = p3 - 1; + continue; + } + if (p1 == 0xe) { + module_info _ loops[module_info _ songs] = TRUE; + break; + } + p2 = rep_times > 0 ? SEEN_REPEAT : SEEN_BEFORE; + for (p1 = 0; p1 < 0x55; p1++) + if (seen[p1] == SEEN_THIS_CALL) + seen[p1] = CAST(byte) p2; + player_calls += tempo * (module_info _ type == ASAP_TYPE_CM3 ? 48 : 64); + pos++; + } + set_song_duration(module_info, player_calls); +} + +PRIVATE FUNC(abool, parse_cmc, ( + P(ASAP_State PTR, ast), P(ASAP_ModuleInfo PTR, module_info), + P(CONST BYTEARRAY, module), P(int, module_len), P(int, type), P(RESOURCE, player))) +{ + V(int, last_pos); + V(int, pos); + if (module_len < 0x306) + return FALSE; + module_info _ type = type; + if (!load_native(ast, module_info, module, module_len, player)) + return FALSE; +#ifndef ASAP_ONLY_INFO + if (ast != NULL && type == ASAP_TYPE_CMR) + COPY_ARRAY(ast _ memory, 0x500 + CMR_BASS_TABLE_OFFSET, cmr_bass_table, 0, sizeof(cmr_bass_table)); +#endif + last_pos = 0x54; + while (--last_pos >= 0) { + if (UBYTE(module[0x206 + last_pos]) < 0xb0 + || UBYTE(module[0x25b + last_pos]) < 0x40 + || UBYTE(module[0x2b0 + last_pos]) < 0x40) + break; + if (module_info _ channels == 2) { + if (UBYTE(module[0x306 + last_pos]) < 0xb0 + || UBYTE(module[0x35b + last_pos]) < 0x40 + || UBYTE(module[0x3b0 + last_pos]) < 0x40) + break; + } + } + module_info _ songs = 0; + parse_cmc_song(module_info, module, 0); + for (pos = 0; pos < last_pos && module_info _ songs < ASAP_SONGS_MAX; pos++) + if (UBYTE(module[0x206 + pos]) == 0x8f || UBYTE(module[0x206 + pos]) == 0xef) + parse_cmc_song(module_info, module, pos + 1); + return TRUE; +} + +PRIVATE FUNC(abool, is_dlt_track_empty, (P(CONST BYTEARRAY, module), P(int, pos))) +{ + return UBYTE(module[0x2006 + pos]) >= 0x43 + && UBYTE(module[0x2106 + pos]) >= 0x40 + && UBYTE(module[0x2206 + pos]) >= 0x40 + && UBYTE(module[0x2306 + pos]) >= 0x40; +} + +PRIVATE FUNC(abool, is_dlt_pattern_end, (P(CONST BYTEARRAY, module), P(int, pos), P(int, i))) +{ + V(int, ch); + for (ch = 0; ch < 4; ch++) { + V(int, pattern) = UBYTE(module[0x2006 + (ch << 8) + pos]); + if (pattern < 64) { + V(int, offset) = 6 + (pattern << 7) + (i << 1); + if ((module[offset] & 0x80) == 0 && (module[offset + 1] & 0x80) != 0) + return TRUE; + } + } + return FALSE; +} + +PRIVATE FUNC(void, parse_dlt_song, ( + P(ASAP_ModuleInfo PTR, module_info), P(CONST BYTEARRAY, module), + P(BOOLARRAY, seen), P(int, pos))) +{ + V(int, player_calls) = 0; + V(abool, loop) = FALSE; + V(int, tempo) = 6; + while (pos < 128 && !seen[pos] && is_dlt_track_empty(module, pos)) + seen[pos++] = TRUE; + module_info _ song_pos[module_info _ songs] = CAST(byte) pos; + while (pos < 128) { + V(int, p1); + if (seen[pos]) { + loop = TRUE; + break; + } + seen[pos] = TRUE; + p1 = module[0x2006 + pos]; + if (p1 == 0x40 || is_dlt_track_empty(module, pos)) + break; + if (p1 == 0x41) + pos = UBYTE(module[0x2086 + pos]); + else if (p1 == 0x42) + tempo = UBYTE(module[0x2086 + pos++]); + else { + V(int, i); + for (i = 0; i < 64 && !is_dlt_pattern_end(module, pos, i); i++) + player_calls += tempo; + pos++; + } + } + if (player_calls > 0) { + module_info _ loops[module_info _ songs] = loop; + set_song_duration(module_info, player_calls); + } +} + +PRIVATE FUNC(abool, parse_dlt, ( + P(ASAP_State PTR, ast), P(ASAP_ModuleInfo PTR, module_info), + P(CONST BYTEARRAY, module), P(int, module_len))) +{ + V(int, pos); + NEW_ARRAY(abool, seen, 128); + if (module_len == 0x2c06) { + if (ast != NULL) + ast _ memory[0x4c00] = 0; + } + else if (module_len != 0x2c07) + return FALSE; + module_info _ type = ASAP_TYPE_DLT; + if (!load_native(ast, module_info, module, module_len, GET_PLAYER(dlt)) + || module_info _ music != 0x2000) { + return FALSE; + } + INIT_ARRAY(seen); + module_info _ songs = 0; + for (pos = 0; pos < 128 && module_info _ songs < ASAP_SONGS_MAX; pos++) { + if (!seen[pos]) + parse_dlt_song(module_info, module, seen, pos); + } + return module_info _ songs > 0; +} + +PRIVATE FUNC(void, parse_mpt_song, ( + P(ASAP_ModuleInfo PTR, module_info), P(CONST BYTEARRAY, module), + P(BOOLARRAY, global_seen), P(int, song_len), P(int, pos))) +{ + V(int, addr_to_offset) = UWORD(module, 2) - 6; + V(int, tempo) = UBYTE(module[0x1cf]); + V(int, player_calls) = 0; + NEW_ARRAY(byte, seen, 256); + NEW_ARRAY(int, pattern_offset, 4); + NEW_ARRAY(int, blank_rows, 4); + NEW_ARRAY(int, blank_rows_counter, 4); + INIT_ARRAY(seen); + INIT_ARRAY(blank_rows); + while (pos < song_len) { + V(int, i); + V(int, ch); + V(int, pattern_rows); + if (seen[pos] != 0) { + if (seen[pos] != SEEN_THIS_CALL) + module_info _ loops[module_info _ songs] = TRUE; + break; + } + seen[pos] = SEEN_THIS_CALL; + global_seen[pos] = TRUE; + i = UBYTE(module[0x1d0 + pos * 2]); + if (i == 0xff) { + pos = UBYTE(module[0x1d1 + pos * 2]); + continue; + } + for (ch = 3; ch >= 0; ch--) { + i = UBYTE(module[0x1c6 + ch]) + (UBYTE(module[0x1ca + ch]) << 8) - addr_to_offset; + i = UBYTE(module[i + pos * 2]); + if (i >= 0x40) + break; + i <<= 1; + i = UWORD(module, 0x46 + i); + pattern_offset[ch] = i == 0 ? 0 : i - addr_to_offset; + blank_rows_counter[ch] = 0; + } + if (ch >= 0) + break; + for (i = 0; i < song_len; i++) + if (seen[i] == SEEN_THIS_CALL) + seen[i] = SEEN_BEFORE; + for (pattern_rows = UBYTE(module[0x1ce]); --pattern_rows >= 0; ) { + for (ch = 3; ch >= 0; ch--) { + if (pattern_offset[ch] == 0 || --blank_rows_counter[ch] >= 0) + continue; + for (;;) { + i = UBYTE(module[pattern_offset[ch]++]); + if (i < 0x40 || i == 0xfe) + break; + if (i < 0x80) + continue; + if (i < 0xc0) { + blank_rows[ch] = i - 0x80; + continue; + } + if (i < 0xd0) + continue; + if (i < 0xe0) { + tempo = i - 0xcf; + continue; + } + pattern_rows = 0; + } + blank_rows_counter[ch] = blank_rows[ch]; + } + player_calls += tempo; + } + pos++; + } + if (player_calls > 0) + set_song_duration(module_info, player_calls); +} + +PRIVATE FUNC(abool, parse_mpt, ( + P(ASAP_State PTR, ast), P(ASAP_ModuleInfo PTR, module_info), + P(CONST BYTEARRAY, module), P(int, module_len))) +{ + V(int, track0_addr); + V(int, pos); + V(int, song_len); + /* seen[i] == TRUE if the track position i has been processed */ + NEW_ARRAY(abool, global_seen, 256); + if (module_len < 0x1d0) + return FALSE; + module_info _ type = ASAP_TYPE_MPT; + if (!load_native(ast, module_info, module, module_len, GET_PLAYER(mpt))) + return FALSE; + track0_addr = UWORD(module, 2) + 0x1ca; + if (UBYTE(module[0x1c6]) + (UBYTE(module[0x1ca]) << 8) != track0_addr) + return FALSE; + /* Calculate the length of the first track. Address of the second track minus + address of the first track equals the length of the first track in bytes. + Divide by two to get number of track positions. */ + song_len = (UBYTE(module[0x1c7]) + (UBYTE(module[0x1cb]) << 8) - track0_addr) >> 1; + if (song_len > 0xfe) + return FALSE; + INIT_ARRAY(global_seen); + module_info _ songs = 0; + for (pos = 0; pos < song_len && module_info _ songs < ASAP_SONGS_MAX; pos++) { + if (!global_seen[pos]) { + module_info _ song_pos[module_info _ songs] = CAST(byte) pos; + parse_mpt_song(module_info, module, global_seen, song_len, pos); + } + } + return module_info _ songs > 0; +} + +CONST_ARRAY(byte, rmt_volume_silent) + 16, 8, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1 +END_CONST_ARRAY; + +PRIVATE FUNC(int, rmt_instrument_frames, ( + P(CONST BYTEARRAY, module), P(int, instrument), + P(int, volume), P(int, volume_frame), P(abool, extra_pokey))) +{ + V(int, addr_to_offset) = UWORD(module, 2) - 6; + V(int, per_frame) = module[0xc]; + V(int, player_call); + V(int, player_calls); + V(int, index); + V(int, index_end); + V(int, index_loop); + V(int, volume_slide_depth); + V(int, volume_min); + V(int, volume_slide); + V(abool, silent_loop); + instrument = UWORD(module, 0xe) - addr_to_offset + (instrument << 1); + if (module[instrument + 1] == 0) + return 0; + instrument = UWORD(module, instrument) - addr_to_offset; + player_calls = player_call = volume_frame * per_frame; + index = UBYTE(module[instrument]) + 1 + player_call * 3; + index_end = UBYTE(module[instrument + 2]) + 3; + index_loop = UBYTE(module[instrument + 3]); + if (index_loop >= index_end) + return 0; /* error */ + volume_slide_depth = UBYTE(module[instrument + 6]); + volume_min = UBYTE(module[instrument + 7]); + if (index >= index_end) + index = (index - index_end) % (index_end - index_loop) + index_loop; + else { + do { + V(int, vol) = module[instrument + index]; + if (extra_pokey) + vol >>= 4; + if ((vol & 0xf) >= rmt_volume_silent[volume]) + player_calls = player_call + 1; + player_call++; + index += 3; + } while (index < index_end); + } + if (volume_slide_depth == 0) + return player_calls / per_frame; + volume_slide = 128; + silent_loop = FALSE; + for (;;) { + V(int, vol); + if (index >= index_end) { + if (silent_loop) + break; + silent_loop = TRUE; + index = index_loop; + } + vol = module[instrument + index]; + if (extra_pokey) + vol >>= 4; + if ((vol & 0xf) >= rmt_volume_silent[volume]) { + player_calls = player_call + 1; + silent_loop = FALSE; + } + player_call++; + index += 3; + volume_slide -= volume_slide_depth; + if (volume_slide < 0) { + volume_slide += 256; + if (--volume <= volume_min) + break; + } + } + return player_calls / per_frame; +} + +PRIVATE FUNC(void, parse_rmt_song, ( + P(ASAP_ModuleInfo PTR, module_info), P(CONST BYTEARRAY, module), + P(BOOLARRAY, global_seen), P(int, song_len), P(int, pos_shift), P(int, pos))) +{ + V(int, ch); + V(int, addr_to_offset) = UWORD(module, 2) - 6; + V(int, tempo) = UBYTE(module[0xb]); + V(int, frames) = 0; + V(int, song_offset) = UWORD(module, 0x14) - addr_to_offset; + V(int, pattern_lo_offset) = UWORD(module, 0x10) - addr_to_offset; + V(int, pattern_hi_offset) = UWORD(module, 0x12) - addr_to_offset; + V(int, instrument_frames); + NEW_ARRAY(byte, seen, 256); + NEW_ARRAY(int, pattern_begin, 8); + NEW_ARRAY(int, pattern_offset, 8); + NEW_ARRAY(int, blank_rows, 8); + NEW_ARRAY(int, instrument_no, 8); + NEW_ARRAY(int, instrument_frame, 8); + NEW_ARRAY(int, volume_value, 8); + NEW_ARRAY(int, volume_frame, 8); + INIT_ARRAY(seen); + INIT_ARRAY(instrument_no); + INIT_ARRAY(instrument_frame); + INIT_ARRAY(volume_value); + INIT_ARRAY(volume_frame); + while (pos < song_len) { + V(int, i); + V(int, pattern_rows); + if (seen[pos] != 0) { + if (seen[pos] != SEEN_THIS_CALL) + module_info _ loops[module_info _ songs] = TRUE; + break; + } + seen[pos] = SEEN_THIS_CALL; + global_seen[pos] = TRUE; + if (UBYTE(module[song_offset + (pos << pos_shift)]) == 0xfe) { + pos = UBYTE(module[song_offset + (pos << pos_shift) + 1]); + continue; + } + for (ch = 0; ch < 1 << pos_shift; ch++) { + i = UBYTE(module[song_offset + (pos << pos_shift) + ch]); + if (i == 0xff) + blank_rows[ch] = 256; + else { + pattern_offset[ch] = pattern_begin[ch] = UBYTE(module[pattern_lo_offset + i]) + + (UBYTE(module[pattern_hi_offset + i]) << 8) - addr_to_offset; + blank_rows[ch] = 0; + } + } + for (i = 0; i < song_len; i++) + if (seen[i] == SEEN_THIS_CALL) + seen[i] = SEEN_BEFORE; + for (pattern_rows = UBYTE(module[0xa]); --pattern_rows >= 0; ) { + for (ch = 0; ch < 1 << pos_shift; ch++) { + if (--blank_rows[ch] > 0) + continue; + for (;;) { + i = UBYTE(module[pattern_offset[ch]++]); + if ((i & 0x3f) < 62) { + i += UBYTE(module[pattern_offset[ch]++]) << 8; + if ((i & 0x3f) != 61) { + instrument_no[ch] = i >> 10; + instrument_frame[ch] = frames; + } + volume_value[ch] = (i >> 6) & 0xf; + volume_frame[ch] = frames; + break; + } + if (i == 62) { + blank_rows[ch] = UBYTE(module[pattern_offset[ch]++]); + break; + } + if ((i & 0x3f) == 62) { + blank_rows[ch] = i >> 6; + break; + } + if ((i & 0xbf) == 63) { + tempo = UBYTE(module[pattern_offset[ch]++]); + continue; + } + if (i == 0xbf) { + pattern_offset[ch] = pattern_begin[ch] + UBYTE(module[pattern_offset[ch]]); + continue; + } + /* assert(i == 0xff); */ + pattern_rows = -1; + break; + } + if (pattern_rows < 0) + break; + } + if (pattern_rows >= 0) + frames += tempo; + } + pos++; + } + instrument_frames = 0; + for (ch = 0; ch < 1 << pos_shift; ch++) { + V(int, frame) = instrument_frame[ch]; + frame += rmt_instrument_frames(module, instrument_no[ch], volume_value[ch], volume_frame[ch] - frame, ch >= 4); + if (instrument_frames < frame) + instrument_frames = frame; + } + if (frames > instrument_frames) { + if (frames - instrument_frames > 100) + module_info _ loops[module_info _ songs] = FALSE; + frames = instrument_frames; + } + if (frames > 0) + set_song_duration(module_info, frames); +} + +PRIVATE FUNC(abool, parse_rmt, ( + P(ASAP_State PTR, ast), P(ASAP_ModuleInfo PTR, module_info), + P(CONST BYTEARRAY, module), P(int, module_len))) +{ + V(int, per_frame); + V(int, pos_shift); + V(int, song_len); + V(int, pos); + NEW_ARRAY(abool, global_seen, 256); + if (module_len < 0x30 || module[6] != CHARCODE('R') || module[7] != CHARCODE('M') + || module[8] != CHARCODE('T') || module[0xd] != 1) + return FALSE; + switch (CAST(char) module[9]) { + case CHARCODE('4'): + pos_shift = 2; + break; + case CHARCODE('8'): + module_info _ channels = 2; + pos_shift = 3; + break; + default: + return FALSE; + } + per_frame = module[0xc]; + if (per_frame < 1 || per_frame > 4) + return FALSE; + module_info _ type = ASAP_TYPE_RMT; + if (!load_native(ast, module_info, module, module_len, + module_info _ channels == 2 ? GET_PLAYER(rmt8) : GET_PLAYER(rmt4))) + return FALSE; + song_len = UWORD(module, 4) + 1 - UWORD(module, 0x14); + if (pos_shift == 3 && (song_len & 4) != 0 + && UBYTE(module[6 + UWORD(module, 4) - UWORD(module, 2) - 3]) == 0xfe) + song_len += 4; + song_len >>= pos_shift; + if (song_len >= 0x100) + return FALSE; + INIT_ARRAY(global_seen); + module_info _ songs = 0; + for (pos = 0; pos < song_len && module_info _ songs < ASAP_SONGS_MAX; pos++) { + if (!global_seen[pos]) { + module_info _ song_pos[module_info _ songs] = CAST(byte) pos; + parse_rmt_song(module_info, module, global_seen, song_len, pos_shift, pos); + } + } + /* must set fastplay after song durations calculations, so they assume 312 */ + module_info _ fastplay = perframe2fastplay[per_frame - 1]; + module_info _ player = 0x600; + return module_info _ songs > 0; +} + +PRIVATE FUNC(void, parse_tmc_song, ( + P(ASAP_ModuleInfo PTR, module_info), P(CONST BYTEARRAY, module), P(int, pos))) +{ + V(int, addr_to_offset) = UWORD(module, 2) - 6; + V(int, tempo) = UBYTE(module[0x24]) + 1; + V(int, frames) = 0; + NEW_ARRAY(int, pattern_offset, 8); + NEW_ARRAY(int, blank_rows, 8); + while (UBYTE(module[0x1a6 + 15 + pos]) < 0x80) { + V(int, ch); + V(int, pattern_rows); + for (ch = 7; ch >= 0; ch--) { + V(int, pat) = UBYTE(module[0x1a6 + 15 + pos - 2 * ch]); + pattern_offset[ch] = UBYTE(module[0xa6 + pat]) + (UBYTE(module[0x126 + pat]) << 8) - addr_to_offset; + blank_rows[ch] = 0; + } + for (pattern_rows = 64; --pattern_rows >= 0; ) { + for (ch = 7; ch >= 0; ch--) { + if (--blank_rows[ch] >= 0) + continue; + for (;;) { + V(int, i) = UBYTE(module[pattern_offset[ch]++]); + if (i < 0x40) { + pattern_offset[ch]++; + break; + } + if (i == 0x40) { + i = UBYTE(module[pattern_offset[ch]++]); + if ((i & 0x7f) == 0) + pattern_rows = 0; + else + tempo = (i & 0x7f) + 1; + if (i >= 0x80) + pattern_offset[ch]++; + break; + } + if (i < 0x80) { + i = module[pattern_offset[ch]++] & 0x7f; + if (i == 0) + pattern_rows = 0; + else + tempo = i + 1; + pattern_offset[ch]++; + break; + } + if (i < 0xc0) + continue; + blank_rows[ch] = i - 0xbf; + break; + } + } + frames += tempo; + } + pos += 16; + } + if (UBYTE(module[0x1a6 + 14 + pos]) < 0x80) + module_info _ loops[module_info _ songs] = TRUE; + set_song_duration(module_info, frames); +} + +PRIVATE FUNC(abool, parse_tmc, ( + P(ASAP_State PTR, ast), P(ASAP_ModuleInfo PTR, module_info), + P(CONST BYTEARRAY, module), P(int, module_len))) +{ + V(int, i); + V(int, last_pos); + if (module_len < 0x1d0) + return FALSE; + module_info _ type = ASAP_TYPE_TMC; + if (!load_native(ast, module_info, module, module_len, GET_PLAYER(tmc))) + return FALSE; + module_info _ channels = 2; + i = 0; + /* find first instrument */ + while (module[0x66 + i] == 0) { + if (++i >= 64) + return FALSE; /* no instrument */ + } + last_pos = (UBYTE(module[0x66 + i]) << 8) + UBYTE(module[0x26 + i]) + - UWORD(module, 2) - 0x1b0; + if (0x1b5 + last_pos >= module_len) + return FALSE; + /* skip trailing jumps */ + do { + if (last_pos <= 0) + return FALSE; /* no pattern to play */ + last_pos -= 16; + } while (UBYTE(module[0x1b5 + last_pos]) >= 0x80); + module_info _ songs = 0; + parse_tmc_song(module_info, module, 0); + for (i = 0; i < last_pos && module_info _ songs < ASAP_SONGS_MAX; i += 16) + if (UBYTE(module[0x1b5 + i]) >= 0x80) + parse_tmc_song(module_info, module, i + 16); + /* must set fastplay after song durations calculations, so they assume 312 */ + i = module[0x25]; + if (i < 1 || i > 4) + return FALSE; + if (ast != NULL) + ast _ tmc_per_frame = module[0x25]; + module_info _ fastplay = perframe2fastplay[i - 1]; + return TRUE; +} + +PRIVATE FUNC(void, parse_tm2_song, ( + P(ASAP_ModuleInfo PTR, module_info), P(CONST BYTEARRAY, module), P(int, pos))) +{ + V(int, addr_to_offset) = UWORD(module, 2) - 6; + V(int, tempo) = UBYTE(module[0x24]) + 1; + V(int, player_calls) = 0; + NEW_ARRAY(int, pattern_offset, 8); + NEW_ARRAY(int, blank_rows, 8); + for (;;) { + V(int, ch); + V(int, pattern_rows) = UBYTE(module[0x386 + 16 + pos]); + if (pattern_rows == 0) + break; + if (pattern_rows >= 0x80) { + module_info _ loops[module_info _ songs] = TRUE; + break; + } + for (ch = 7; ch >= 0; ch--) { + V(int, pat) = UBYTE(module[0x386 + 15 + pos - 2 * ch]); + pattern_offset[ch] = UBYTE(module[0x106 + pat]) + (UBYTE(module[0x206 + pat]) << 8) - addr_to_offset; + blank_rows[ch] = 0; + } + while (--pattern_rows >= 0) { + for (ch = 7; ch >= 0; ch--) { + if (--blank_rows[ch] >= 0) + continue; + for (;;) { + V(int, i) = UBYTE(module[pattern_offset[ch]++]); + if (i == 0) { + pattern_offset[ch]++; + break; + } + if (i < 0x40) { + if (UBYTE(module[pattern_offset[ch]++]) >= 0x80) + pattern_offset[ch]++; + break; + } + if (i < 0x80) { + pattern_offset[ch]++; + break; + } + if (i == 0x80) { + blank_rows[ch] = UBYTE(module[pattern_offset[ch]++]); + break; + } + if (i < 0xc0) + break; + if (i < 0xd0) { + tempo = i - 0xbf; + continue; + } + if (i < 0xe0) { + pattern_offset[ch]++; + break; + } + if (i < 0xf0) { + pattern_offset[ch] += 2; + break; + } + if (i < 0xff) { + blank_rows[ch] = i - 0xf0; + break; + } + blank_rows[ch] = 64; + break; + } + } + player_calls += tempo; + } + pos += 17; + } + set_song_duration(module_info, player_calls); +} + +PRIVATE FUNC(abool, parse_tm2, ( + P(ASAP_State PTR, ast), P(ASAP_ModuleInfo PTR, module_info), + P(CONST BYTEARRAY, module), P(int, module_len))) +{ + V(int, i); + V(int, last_pos); + V(int, c); + if (module_len < 0x3a4) + return FALSE; + module_info _ type = ASAP_TYPE_TM2; + if (!load_native(ast, module_info, module, module_len, GET_PLAYER(tm2))) + return FALSE; + i = module[0x25]; + if (i < 1 || i > 4) + return FALSE; + module_info _ fastplay = perframe2fastplay[i - 1]; + module_info _ player = 0x500; + if (module[0x1f] != 0) + module_info _ channels = 2; + last_pos = 0xffff; + for (i = 0; i < 0x80; i++) { + V(int, instr_addr) = UBYTE(module[0x86 + i]) + (UBYTE(module[0x306 + i]) << 8); + if (instr_addr != 0 && instr_addr < last_pos) + last_pos = instr_addr; + } + for (i = 0; i < 0x100; i++) { + V(int, pattern_addr) = UBYTE(module[0x106 + i]) + (UBYTE(module[0x206 + i]) << 8); + if (pattern_addr != 0 && pattern_addr < last_pos) + last_pos = pattern_addr; + } + last_pos -= UWORD(module, 2) + 0x380; + if (0x386 + last_pos >= module_len) + return FALSE; + /* skip trailing stop/jump commands */ + do { + if (last_pos <= 0) + return FALSE; + last_pos -= 17; + c = UBYTE(module[0x386 + 16 + last_pos]); + } while (c == 0 || c >= 0x80); + module_info _ songs = 0; + parse_tm2_song(module_info, module, 0); + for (i = 0; i < last_pos && module_info _ songs < ASAP_SONGS_MAX; i += 17) { + c = UBYTE(module[0x386 + 16 + i]); + if (c == 0 || c >= 0x80) + parse_tm2_song(module_info, module, i + 17); + } + return TRUE; +} + +#endif /* ASAP_ONLY_SAP */ + +PRIVATE FUNC(abool, has_string_at, (P(CONST BYTEARRAY, module), P(int, module_index), P(STRING, s))) +{ + V(int, i); + V(int, n) = strlen(s); + for (i = 0; i < n; i++) + if (module[module_index + i] != CHARCODEAT(s, i)) + return FALSE; + return TRUE; +} + +PRIVATE FUNC(STRING, parse_text, (P(OUT_STRING, dest), P(CONST BYTEARRAY, module), P(int, module_index))) +{ + V(int, i); + if (module[module_index] != CHARCODE('"')) + return NULL; + if (has_string_at(module, module_index + 1, "\"")) + return dest; + for (i = 0; ; i++) { + V(int, c) = module[module_index + 1 + i]; + if (c == CHARCODE('"')) + break; + if (c < 32 || c >= 127) + return NULL; + } + BYTES_TO_STRING(dest, module, module_index + 1, i); + return dest; +} + +PRIVATE FUNC(int, parse_dec, (P(CONST BYTEARRAY, module), P(int, module_index), P(int, maxval))) +{ + V(int, r); + if (module[module_index] == 0xd) + return -1; + for (r = 0;;) { + V(int, c) = module[module_index++]; + if (c == 0xd) + break; + if (c < CHARCODE('0') || c > CHARCODE('9')) + return -1; + r = 10 * r + c - 48; + if (r > maxval) + return -1; + } + return r; +} + +PRIVATE FUNC(int, parse_hex, (P(CONST BYTEARRAY, module), P(int, module_index))) +{ + V(int, r); + if (module[module_index] == 0xd) + return -1; + for (r = 0;;) { + V(int, c) = module[module_index++]; + if (c == 0xd) + break; + if (r > 0xfff) + return -1; + r <<= 4; + if (c >= CHARCODE('0') && c <= CHARCODE('9')) + r += c - CHARCODE('0'); + else if (c >= CHARCODE('A') && c <= CHARCODE('F')) + r += c - CHARCODE('A') + 10; + else if (c >= CHARCODE('a') && c <= CHARCODE('f')) + r += c - CHARCODE('a') + 10; + else + return -1; + } + return r; +} + +FUNC(int, ASAP_ParseDuration, (P(STRING, s))) +{ + V(int, i) = 0; + V(int, r); + V(int, d); + V(int, n) = strlen(s); +#define PARSE_DIGIT(maxdig, retifnot) \ + if (i >= n) \ + return retifnot; \ + d = CHARCODEAT(s, i) - 48; \ + if (d < 0 || d > maxdig) \ + return -1; \ + i++; + + PARSE_DIGIT(9, -1); + r = d; + if (i < n) { + d = CHARCODEAT(s, i) - 48; + if (d >= 0 && d <= 9) { + i++; + r = 10 * r + d; + } + if (i < n && CHARAT(s, i) == ':') { + i++; + PARSE_DIGIT(5, -1); + r = (6 * r + d) * 10; + PARSE_DIGIT(9, -1); + r += d; + } + } + r *= 1000; + if (i >= n) + return r; + if (CHARAT(s, i) != '.') + return -1; + i++; + PARSE_DIGIT(9, -1); + r += 100 * d; + PARSE_DIGIT(9, r); + r += 10 * d; + PARSE_DIGIT(9, r); + r += d; + return r; +} + +PRIVATE FUNC(abool, parse_sap_header, ( + P(ASAP_ModuleInfo PTR, module_info), P(CONST BYTEARRAY, module), P(int, module_len))) +{ + V(int, module_index); + V(int, type) = 0; + V(int, duration_index) = 0; + if (!has_string_at(module, 0, "SAP\r\n")) + return FALSE; + module_info _ fastplay = -1; + module_index = 5; + while (UBYTE(module[module_index]) != 0xff) { + if (module_index + 8 >= module_len) + return FALSE; +#define TAG_IS(s) has_string_at(module, module_index, s) +#ifdef C +#define SET_TEXT(v, i) if (parse_text(v, module, module_index + i) == NULL) return FALSE +#else +#define SET_TEXT(v, i) v = parse_text(v, module, module_index + i); if (v == NULL) return FALSE +#endif +#define SET_DEC(v, i, min, max) v = parse_dec(module, module_index + i, max); if (v < min) return FALSE +#define SET_HEX(v, i) v = parse_hex(module, module_index + i) + if (TAG_IS("AUTHOR ")) { + SET_TEXT(module_info _ author, 7); + } + else if (TAG_IS("NAME ")) { + SET_TEXT(module_info _ name, 5); + } + else if (TAG_IS("DATE ")) { + SET_TEXT(module_info _ date, 5); + } + else if (TAG_IS("SONGS ")) { + SET_DEC(module_info _ songs, 6, 1, ASAP_SONGS_MAX); + } + else if (TAG_IS("DEFSONG ")) { + SET_DEC(module_info _ default_song, 8, 0, ASAP_SONGS_MAX - 1); + } + else if (TAG_IS("STEREO\r")) + module_info _ channels = 2; + else if (TAG_IS("NTSC\r")) + module_info _ ntsc = TRUE; + else if (TAG_IS("TIME ")) { + V(int, i); +#ifdef C + char s[ASAP_DURATION_CHARS]; +#else + V(STRING, s); +#endif + module_index += 5; + for (i = 0; module[module_index + i] != 0xd; i++) { } + if (i > 5 && has_string_at(module, module_index + i - 5, " LOOP")) { + module_info _ loops[duration_index] = TRUE; + i -= 5; + } +#ifdef C + if (i >= ASAP_DURATION_CHARS) + return FALSE; +#endif + BYTES_TO_STRING(s, module, module_index, i); + i = ASAP_ParseDuration(s); + if (i < 0 || duration_index >= ASAP_SONGS_MAX) + return FALSE; + module_info _ durations[duration_index++] = i; + } + else if (TAG_IS("TYPE ")) + type = module[module_index + 5]; + else if (TAG_IS("FASTPLAY ")) { + SET_DEC(module_info _ fastplay, 9, 1, 312); + } + else if (TAG_IS("MUSIC ")) { + SET_HEX(module_info _ music, 6); + } + else if (TAG_IS("INIT ")) { + SET_HEX(module_info _ init, 5); + } + else if (TAG_IS("PLAYER ")) { + SET_HEX(module_info _ player, 7); + } + else if (TAG_IS("COVOX ")) { + SET_HEX(module_info _ covox_addr, 6); + if (module_info _ covox_addr != 0xd600) + return FALSE; + module_info _ channels = 2; + } + + while (module[module_index++] != 0x0d) { + if (module_index >= module_len) + return FALSE; + } + if (module[module_index++] != 0x0a) + return FALSE; + } + if (module_info _ default_song >= module_info _ songs) + return FALSE; + switch (type) { + case CHARCODE('B'): + if (module_info _ player < 0 || module_info _ init < 0) + return FALSE; + module_info _ type = ASAP_TYPE_SAP_B; + break; + case CHARCODE('C'): + if (module_info _ player < 0 || module_info _ music < 0) + return FALSE; + module_info _ type = ASAP_TYPE_SAP_C; + break; + case CHARCODE('D'): + if (module_info _ init < 0) + return FALSE; + module_info _ type = ASAP_TYPE_SAP_D; + break; + case CHARCODE('S'): + if (module_info _ init < 0) + return FALSE; + module_info _ type = ASAP_TYPE_SAP_S; + module_info _ fastplay = 78; + break; + default: + return FALSE; + } + if (module_info _ fastplay < 0) + module_info _ fastplay = module_info _ ntsc ? 262 : 312; + else if (module_info _ ntsc && module_info _ fastplay > 262) + return FALSE; + if (UBYTE(module[module_index + 1]) != 0xff) + return FALSE; + module_info _ header_len = module_index; + return TRUE; +} + +PRIVATE FUNC(abool, parse_sap, ( + P(ASAP_State PTR, ast), P(ASAP_ModuleInfo PTR, module_info), + P(CONST BYTEARRAY, module), P(int, module_len))) +{ + V(int, module_index); + if (!parse_sap_header(module_info, module, module_len)) + return FALSE; + if (ast == NULL) + return TRUE; + ZERO_ARRAY(ast _ memory); + module_index = module_info _ header_len + 2; + while (module_index + 5 <= module_len) { + V(int, start_addr) = UWORD(module, module_index); + V(int, block_len) = UWORD(module, module_index + 2) + 1 - start_addr; + if (block_len <= 0 || module_index + block_len > module_len) + return FALSE; + module_index += 4; + COPY_ARRAY(ast _ memory, start_addr, module, module_index, block_len); + module_index += block_len; + if (module_index == module_len) + return TRUE; + if (module_index + 7 <= module_len + && UBYTE(module[module_index]) == 0xff && UBYTE(module[module_index + 1]) == 0xff) + module_index += 2; + } + return FALSE; +} + +#define ASAP_EXT(c1, c2, c3) ((CHARCODE(c1) + (CHARCODE(c2) << 8) + (CHARCODE(c3) << 16)) | 0x202020) + +PRIVATE FUNC(int, get_packed_ext, (P(STRING, filename))) +{ + V(int, i) = strlen(filename); + V(int, ext) = 0; + while (--i > 0) { + V(char, c) = CHARAT(filename, i); + if (c <= ' ' || c > 'z') + return 0; + if (c == '.') + return ext | 0x202020; + ext = (ext << 8) + CHARCODE(c); + } + return 0; +} + +PRIVATE FUNC(abool, is_our_ext, (P(int, ext))) +{ + switch (ext) { + case ASAP_EXT('S', 'A', 'P'): +#ifndef ASAP_ONLY_SAP + case ASAP_EXT('C', 'M', 'C'): + case ASAP_EXT('C', 'M', '3'): + case ASAP_EXT('C', 'M', 'R'): + case ASAP_EXT('C', 'M', 'S'): + case ASAP_EXT('D', 'M', 'C'): + case ASAP_EXT('D', 'L', 'T'): + case ASAP_EXT('M', 'P', 'T'): + case ASAP_EXT('M', 'P', 'D'): + case ASAP_EXT('R', 'M', 'T'): + case ASAP_EXT('T', 'M', 'C'): + case ASAP_EXT('T', 'M', '8'): + case ASAP_EXT('T', 'M', '2'): +#endif + return TRUE; + default: + return FALSE; + } +} + +FUNC(abool, ASAP_IsOurFile, (P(STRING, filename))) +{ + V(int, ext) = get_packed_ext(filename); + return is_our_ext(ext); +} + +FUNC(abool, ASAP_IsOurExt, (P(STRING, ext))) +{ + return strlen(ext) == 3 + && is_our_ext(ASAP_EXT(CHARAT(ext, 0), CHARAT(ext, 1), CHARAT(ext, 2))); +} + +PRIVATE FUNC(abool, parse_file, ( + P(ASAP_State PTR, ast), P(ASAP_ModuleInfo PTR, module_info), + P(STRING, filename), P(CONST BYTEARRAY, module), P(int, module_len))) +{ + V(int, i); + V(int, len) = strlen(filename); + V(int, basename) = 0; + V(int, ext) = -1; + for (i = 0; i < len; i++) { + V(char, c) = CHARAT(filename, i); + if (c == '/' || c == '\\') { + basename = i + 1; + ext = -1; + } + else if (c == '.') + ext = i; + } + if (ext < 0) + return FALSE; + EMPTY_STRING(module_info _ author); + SUBSTRING(module_info _ name, filename, basename, ext - basename); + EMPTY_STRING(module_info _ date); + module_info _ channels = 1; + module_info _ songs = 1; + module_info _ default_song = 0; + for (i = 0; i < ASAP_SONGS_MAX; i++) { + module_info _ durations[i] = -1; + module_info _ loops[i] = FALSE; + } + module_info _ ntsc = FALSE; + module_info _ fastplay = 312; + module_info _ music = -1; + module_info _ init = -1; + module_info _ player = -1; + module_info _ covox_addr = -1; + switch (get_packed_ext(filename)) { + case ASAP_EXT('S', 'A', 'P'): + return parse_sap(ast, module_info, module, module_len); +#ifndef ASAP_ONLY_SAP + case ASAP_EXT('C', 'M', 'C'): + return parse_cmc(ast, module_info, module, module_len, ASAP_TYPE_CMC, GET_PLAYER(cmc)); + case ASAP_EXT('C', 'M', '3'): + return parse_cmc(ast, module_info, module, module_len, ASAP_TYPE_CM3, GET_PLAYER(cm3)); + case ASAP_EXT('C', 'M', 'R'): + return parse_cmc(ast, module_info, module, module_len, ASAP_TYPE_CMR, GET_PLAYER(cmc)); + case ASAP_EXT('C', 'M', 'S'): + module_info _ channels = 2; + return parse_cmc(ast, module_info, module, module_len, ASAP_TYPE_CMS, GET_PLAYER(cms)); + case ASAP_EXT('D', 'M', 'C'): + module_info _ fastplay = 156; + return parse_cmc(ast, module_info, module, module_len, ASAP_TYPE_CMC, GET_PLAYER(cmc)); + case ASAP_EXT('D', 'L', 'T'): + return parse_dlt(ast, module_info, module, module_len); + case ASAP_EXT('M', 'P', 'T'): + return parse_mpt(ast, module_info, module, module_len); + case ASAP_EXT('M', 'P', 'D'): + module_info _ fastplay = 156; + return parse_mpt(ast, module_info, module, module_len); + case ASAP_EXT('R', 'M', 'T'): + return parse_rmt(ast, module_info, module, module_len); + case ASAP_EXT('T', 'M', 'C'): + case ASAP_EXT('T', 'M', '8'): + return parse_tmc(ast, module_info, module, module_len); + case ASAP_EXT('T', 'M', '2'): + return parse_tm2(ast, module_info, module, module_len); +#endif + default: + return FALSE; + } +} + +FUNC(abool, ASAP_GetModuleInfo, ( + P(ASAP_ModuleInfo PTR, module_info), P(STRING, filename), + P(CONST BYTEARRAY, module), P(int, module_len))) +{ + return parse_file(NULL, module_info, filename, module, module_len); +} + +#ifndef ASAP_ONLY_INFO + +FUNC(abool, ASAP_Load, ( + P(ASAP_State PTR, ast), P(STRING, filename), + P(CONST BYTEARRAY, module), P(int, module_len))) +{ + /* Set up ast */ + ast _ memory = s_memory; + ast _ module_info = &s_module_info; + ast _ silence_cycles = 0; + return parse_file(ast, ast _ module_info, filename, module, module_len); +} + +FUNC(void, ASAP_DetectSilence, (P(ASAP_State PTR, ast), P(int, seconds))) +{ + ast _ silence_cycles = seconds * ASAP_MAIN_CLOCK(ast); +} + +PRIVATE FUNC(void, call_6502, (P(ASAP_State PTR, ast), P(int, addr), P(int, max_scanlines))) +{ + ast _ cpu_pc = addr; + /* put a CIM at 0xd20a and a return address on stack */ + dPutByte(0xd20a, 0xd2); + dPutByte(0x01fe, 0x09); + dPutByte(0x01ff, 0xd2); + ast _ cpu_s = 0xfd; + Cpu_RunScanlines(ast, max_scanlines); +} + +/* 50 Atari frames for the initialization routine - some SAPs are self-extracting. */ +#define SCANLINES_FOR_INIT (50 * 312) + +PRIVATE FUNC(void, call_6502_init, (P(ASAP_State PTR, ast), P(int, addr), P(int, a), P(int, x), P(int, y))) +{ + ast _ cpu_a = a & 0xff; + ast _ cpu_x = x & 0xff; + ast _ cpu_y = y & 0xff; + call_6502(ast, addr, SCANLINES_FOR_INIT); +} + +FUNC(void, ASAP_PlaySong, (P(ASAP_State PTR, ast), P(int, song), P(int, duration))) +{ + ast _ current_song = song; + ast _ current_duration = duration; + ast _ blocks_played = 0; + ast _ silence_cycles_counter = ast _ silence_cycles; + ast _ extra_pokey_mask = ast _ module_info->channels > 1 ? 0x10 : 0; + ast _ consol = 8; + ast _ covox[0] = CAST(byte) 0x80; + ast _ covox[1] = CAST(byte) 0x80; + ast _ covox[2] = CAST(byte) 0x80; + ast _ covox[3] = CAST(byte) 0x80; + PokeySound_Initialize(ast); + ast _ cycle = 0; + ast _ cpu_nz = 0; + ast _ cpu_c = 0; + ast _ cpu_vdi = 0; + ast _ scanline_number = 0; + ast _ next_scanline_cycle = 0; + ast _ timer1_cycle = NEVER; + ast _ timer2_cycle = NEVER; + ast _ timer4_cycle = NEVER; + ast _ irqst = 0xff; + switch (ast _ module_info->type) { + case ASAP_TYPE_SAP_B: + call_6502_init(ast, ast _ module_info->init, song, 0, 0); + break; + case ASAP_TYPE_SAP_C: +#ifndef ASAP_ONLY_SAP + case ASAP_TYPE_CMC: + case ASAP_TYPE_CM3: + case ASAP_TYPE_CMR: + case ASAP_TYPE_CMS: +#endif + call_6502_init(ast, ast _ module_info->player + 3, 0x70, ast _ module_info->music, ast _ module_info->music >> 8); + call_6502_init(ast, ast _ module_info->player + 3, 0x00, song, 0); + break; + case ASAP_TYPE_SAP_D: + case ASAP_TYPE_SAP_S: + ast _ cpu_a = song; + ast _ cpu_x = 0x00; + ast _ cpu_y = 0x00; + ast _ cpu_s = 0xff; + ast _ cpu_pc = ast _ module_info->init; + break; +#ifndef ASAP_ONLY_SAP + case ASAP_TYPE_DLT: + call_6502_init(ast, ast _ module_info->player + 0x100, 0x00, 0x00, ast _ module_info->song_pos[song]); + break; + case ASAP_TYPE_MPT: + call_6502_init(ast, ast _ module_info->player, 0x00, ast _ module_info->music >> 8, ast _ module_info->music); + call_6502_init(ast, ast _ module_info->player, 0x02, ast _ module_info->song_pos[song], 0); + break; + case ASAP_TYPE_RMT: + call_6502_init(ast, ast _ module_info->player, ast _ module_info->song_pos[song], ast _ module_info->music, ast _ module_info->music >> 8); + break; + case ASAP_TYPE_TMC: + case ASAP_TYPE_TM2: + call_6502_init(ast, ast _ module_info->player, 0x70, ast _ module_info->music >> 8, ast _ module_info->music); + call_6502_init(ast, ast _ module_info->player, 0x00, song, 0); + ast _ tmc_per_frame_counter = 1; + break; +#endif + } + ASAP_MutePokeyChannels(ast, 0); +} + +FUNC(void, ASAP_MutePokeyChannels, (P(ASAP_State PTR, ast), P(int, mask))) +{ + PokeySound_Mute(ast, ADDRESSOF ast _ base_pokey, mask); + PokeySound_Mute(ast, ADDRESSOF ast _ extra_pokey, mask >> 4); +} + +FUNC(abool, call_6502_player, (P(ASAP_State PTR, ast))) +{ + V(int, player) = ast _ module_info->player; + PokeySound_StartFrame(ast); + switch (ast _ module_info->type) { + case ASAP_TYPE_SAP_B: + call_6502(ast, player, ast _ module_info->fastplay); + break; + case ASAP_TYPE_SAP_C: +#ifndef ASAP_ONLY_SAP + case ASAP_TYPE_CMC: + case ASAP_TYPE_CM3: + case ASAP_TYPE_CMR: + case ASAP_TYPE_CMS: +#endif + call_6502(ast, player + 6, ast _ module_info->fastplay); + break; + case ASAP_TYPE_SAP_D: + if (player >= 0) { + V(int, s)= ast _ cpu_s; +#define PUSH_ON_6502_STACK(x) dPutByte(0x100 + s, x); s = (s - 1) & 0xff +#define RETURN_FROM_PLAYER_ADDR 0xd200 + /* save 6502 state on 6502 stack */ + PUSH_ON_6502_STACK(ast _ cpu_pc >> 8); + PUSH_ON_6502_STACK(ast _ cpu_pc & 0xff); + PUSH_ON_6502_STACK(((ast _ cpu_nz | (ast _ cpu_nz >> 1)) & 0x80) + ast _ cpu_vdi + \ + ((ast _ cpu_nz & 0xff) == 0 ? Z_FLAG : 0) + ast _ cpu_c + 0x20); + PUSH_ON_6502_STACK(ast _ cpu_a); + PUSH_ON_6502_STACK(ast _ cpu_x); + PUSH_ON_6502_STACK(ast _ cpu_y); + /* RTS will jump to 6502 code that restores the state */ + PUSH_ON_6502_STACK((RETURN_FROM_PLAYER_ADDR - 1) >> 8); + PUSH_ON_6502_STACK((RETURN_FROM_PLAYER_ADDR - 1) & 0xff); + ast _ cpu_s = s; + dPutByte(RETURN_FROM_PLAYER_ADDR, 0x68); /* PLA */ + dPutByte(RETURN_FROM_PLAYER_ADDR + 1, 0xa8); /* TAY */ + dPutByte(RETURN_FROM_PLAYER_ADDR + 2, 0x68); /* PLA */ + dPutByte(RETURN_FROM_PLAYER_ADDR + 3, 0xaa); /* TAX */ + dPutByte(RETURN_FROM_PLAYER_ADDR + 4, 0x68); /* PLA */ + dPutByte(RETURN_FROM_PLAYER_ADDR + 5, 0x40); /* RTI */ + ast _ cpu_pc = player; + } + Cpu_RunScanlines(ast, ast _ module_info->fastplay); + break; + case ASAP_TYPE_SAP_S: + Cpu_RunScanlines(ast, ast _ module_info->fastplay); + { + V(int, i) = dGetByte(0x45) - 1; + dPutByte(0x45, i); + if (i == 0) + dPutByte(0xb07b, dGetByte(0xb07b) + 1); + } + break; +#ifndef ASAP_ONLY_SAP + case ASAP_TYPE_DLT: + call_6502(ast, player + 0x103, ast _ module_info->fastplay); + break; + case ASAP_TYPE_MPT: + case ASAP_TYPE_RMT: + case ASAP_TYPE_TM2: + call_6502(ast, player + 3, ast _ module_info->fastplay); + break; + case ASAP_TYPE_TMC: + if (--ast _ tmc_per_frame_counter <= 0) { + ast _ tmc_per_frame_counter = ast _ tmc_per_frame; + call_6502(ast, player + 3, ast _ module_info->fastplay); + } + else + call_6502(ast, player + 6, ast _ module_info->fastplay); + break; +#endif + } + PokeySound_EndFrame(ast, ast _ module_info->fastplay * 114); + if (ast _ silence_cycles > 0) { + if (PokeySound_IsSilent(ADDRESSOF ast _ base_pokey) + && PokeySound_IsSilent(ADDRESSOF ast _ extra_pokey)) { + ast _ silence_cycles_counter -= ast _ module_info->fastplay * 114; + if (ast _ silence_cycles_counter <= 0) + return FALSE; + } + else + ast _ silence_cycles_counter = ast _ silence_cycles; + } + return TRUE; +} + +FUNC(int, ASAP_GetPosition, (P(CONST ASAP_State PTR, ast))) +{ + return ast _ blocks_played * 10 / (ASAP_SAMPLE_RATE / 100); +} + +FUNC(int, milliseconds_to_blocks, (P(int, milliseconds))) +{ + return milliseconds * (ASAP_SAMPLE_RATE / 100) / 10; +} + +#ifndef ACTIONSCRIPT + +FUNC(void, ASAP_Seek, (P(ASAP_State PTR, ast), P(int, position))) +{ + V(int, block) = milliseconds_to_blocks(position); + if (block < ast _ blocks_played) + ASAP_PlaySong(ast, ast _ current_song, ast _ current_duration); + while (ast _ blocks_played + ast _ samples - ast _ sample_index < block) { + ast _ blocks_played += ast _ samples - ast _ sample_index; + call_6502_player(ast); + } + ast _ sample_index += block - ast _ blocks_played; + ast _ blocks_played = block; +} + +PRIVATE FUNC(void, serialize_int, (P(BYTEARRAY, buffer), P(int, offset), P(int, value))) +{ + buffer[offset] = TO_BYTE(value); + buffer[offset + 1] = TO_BYTE(value >> 8); + buffer[offset + 2] = TO_BYTE(value >> 16); + buffer[offset + 3] = TO_BYTE(value >> 24); +} + +FUNC(void, ASAP_GetWavHeader, ( + P(CONST ASAP_State PTR, ast), P(BYTEARRAY, buffer), P(ASAP_SampleFormat, format))) +{ + V(int, use_16bit) = format != ASAP_FORMAT_U8 ? 1 : 0; + V(int, block_size) = ast _ module_info->channels << use_16bit; + V(int, bytes_per_second) = ASAP_SAMPLE_RATE * block_size; + V(int, total_blocks) = milliseconds_to_blocks(ast _ current_duration); + V(int, n_bytes) = (total_blocks - ast _ blocks_played) * block_size; + buffer[0] = CAST(byte) CHARCODE('R'); + buffer[1] = CAST(byte) CHARCODE('I'); + buffer[2] = CAST(byte) CHARCODE('F'); + buffer[3] = CAST(byte) CHARCODE('F'); + serialize_int(buffer, 4, n_bytes + 36); + buffer[8] = CAST(byte) CHARCODE('W'); + buffer[9] = CAST(byte) CHARCODE('A'); + buffer[10] = CAST(byte) CHARCODE('V'); + buffer[11] = CAST(byte) CHARCODE('E'); + buffer[12] = CAST(byte) CHARCODE('f'); + buffer[13] = CAST(byte) CHARCODE('m'); + buffer[14] = CAST(byte) CHARCODE('t'); + buffer[15] = CAST(byte) CHARCODE(' '); + buffer[16] = 16; + buffer[17] = 0; + buffer[18] = 0; + buffer[19] = 0; + buffer[20] = 1; + buffer[21] = 0; + buffer[22] = CAST(byte) ast _ module_info->channels; + buffer[23] = 0; + serialize_int(buffer, 24, ASAP_SAMPLE_RATE); + serialize_int(buffer, 28, bytes_per_second); + buffer[32] = CAST(byte) block_size; + buffer[33] = 0; + buffer[34] = CAST(byte) (8 << use_16bit); + buffer[35] = 0; + buffer[36] = CAST(byte) CHARCODE('d'); + buffer[37] = CAST(byte) CHARCODE('a'); + buffer[38] = CAST(byte) CHARCODE('t'); + buffer[39] = CAST(byte) CHARCODE('a'); + serialize_int(buffer, 40, n_bytes); +} + +#endif /* ACTIONSCRIPT */ + +PRIVATE FUNC(int, ASAP_GenerateAt, (P(ASAP_State PTR, ast), P(VOIDPTR, buffer), P(int, buffer_offset), P(int, buffer_len), P(ASAP_SampleFormat, format))) +{ + V(int, block_shift); + V(int, buffer_blocks); + V(int, block); + if (ast _ silence_cycles > 0 && ast _ silence_cycles_counter <= 0) + return 0; +#ifdef ACTIONSCRIPT + block_shift = 0; +#else + block_shift = (ast _ module_info->channels - 1) + (format != ASAP_FORMAT_U8 ? 1 : 0); +#endif + buffer_blocks = buffer_len >> block_shift; + if (ast _ current_duration > 0) { + V(int, total_blocks) = milliseconds_to_blocks(ast _ current_duration); + if (buffer_blocks > total_blocks - ast _ blocks_played) + buffer_blocks = total_blocks - ast _ blocks_played; + } + block = 0; + do { + V(int, blocks) = PokeySound_Generate(ast, CAST(BYTEARRAY) buffer, + buffer_offset + (block << block_shift), buffer_blocks - block, format); + ast _ blocks_played += blocks; + block += blocks; + } while (block < buffer_blocks && call_6502_player(ast)); + return block << block_shift; +} + +FUNC(int, ASAP_Generate, (P(ASAP_State PTR, ast), P(VOIDPTR, buffer), P(int, buffer_len), P(ASAP_SampleFormat, format))) +{ + return ASAP_GenerateAt(ast, buffer, 0, buffer_len, format); +} + +#endif /* ASAP_ONLY_INFO */ + +#ifdef C + +abool ASAP_CanSetModuleInfo(const char *filename) +{ + int ext = get_packed_ext(filename); + return ext == ASAP_EXT('S', 'A', 'P'); +} + +abool ASAP_ChangeExt(char *filename, const char *ext) +{ + char *dest = NULL; + while (*filename != '\0') { + if (*filename == '/' || *filename == '\\') + dest = NULL; + else if (*filename == '.') + dest = filename + 1; + filename++; + } + if (dest == NULL) + return FALSE; + strcpy(dest, ext); + return TRUE; +} + +static byte *put_string(byte *dest, const char *str) +{ + while (*str != '\0') + *dest++ = *str++; + return dest; +} + +static byte *put_dec(byte *dest, int value) +{ + if (value >= 10) { + dest = put_dec(dest, value / 10); + value %= 10; + } + *dest++ = '0' + value; + return dest; +} + +static byte *put_text_tag(byte *dest, const char *tag, const char *value) +{ + dest = put_string(dest, tag); + *dest++ = '"'; + if (*value == '\0') + value = ""; + while (*value != '\0') { + if (*value < ' ' || *value > 'z' || *value == '"' || *value == '`') + return NULL; + *dest++ = *value++; + } + *dest++ = '"'; + *dest++ = '\r'; + *dest++ = '\n'; + return dest; +} + +static byte *put_dec_tag(byte *dest, const char *tag, int value) +{ + dest = put_string(dest, tag); + dest = put_dec(dest, value); + *dest++ = '\r'; + *dest++ = '\n'; + return dest; +} + +static byte *start_sap_header(byte *dest, const ASAP_ModuleInfo *module_info) +{ + dest = put_string(dest, "SAP\r\n"); + dest = put_text_tag(dest, "AUTHOR ", module_info->author); + if (dest == NULL) + return NULL; + dest = put_text_tag(dest, "NAME ", module_info->name); + if (dest == NULL) + return NULL; + dest = put_text_tag(dest, "DATE ", module_info->date); + if (dest == NULL) + return NULL; + if (module_info->songs > 1) { + dest = put_dec_tag(dest, "SONGS ", module_info->songs); + if (module_info->default_song > 0) + dest = put_dec_tag(dest, "DEFSONG ", module_info->default_song); + } + if (module_info->channels > 1) + dest = put_string(dest, "STEREO\r\n"); + return dest; +} + +static char *two_digits(char *s, int x) +{ + s[0] = '0' + x / 10; + s[1] = '0' + x % 10; + return s + 2; +} + +void ASAP_DurationToString(char *s, int duration) +{ + if (duration >= 0 && duration < 100 * 60 * 1000) { + int seconds = duration / 1000; + s = two_digits(s, seconds / 60); + *s++ = ':'; + s = two_digits(s, seconds % 60); + duration %= 1000; + if (duration != 0) { + *s++ = '.'; + s = two_digits(s, duration / 10); + duration %= 10; + if (duration != 0) + *s++ = '0' + duration; + } + } + *s = '\0'; +} + +static byte *put_durations(byte *dest, const ASAP_ModuleInfo *module_info) +{ + int song; + for (song = 0; song < module_info->songs; song++) { + if (module_info->durations[song] < 0) + break; + dest = put_string(dest, "TIME "); + ASAP_DurationToString((char *) dest, module_info->durations[song]); + while (*dest != '\0') + dest++; + if (module_info->loops[song]) + dest = put_string(dest, " LOOP"); + *dest++ = '\r'; + *dest++ = '\n'; + } + return dest; +} + +int ASAP_SetModuleInfo(const ASAP_ModuleInfo *module_info, const BYTEARRAY module, int module_len, BYTEARRAY out_module) +{ + byte *dest; + int i; + if (memcmp(module, "SAP\r\n", 5) != 0) + return -1; + dest = start_sap_header(out_module, module_info); + if (dest == NULL) + return -1; + i = 5; + while (i < module_len && module[i] != 0xff) { + if (memcmp(module + i, "AUTHOR ", 7) == 0 + || memcmp(module + i, "NAME ", 5) == 0 + || memcmp(module + i, "DATE ", 5) == 0 + || memcmp(module + i, "SONGS ", 6) == 0 + || memcmp(module + i, "DEFSONG ", 8) == 0 + || memcmp(module + i, "STEREO\r", 7) == 0 + || memcmp(module + i, "TIME ", 5) == 0) { + while (i < module_len && module[i++] != 0x0a); + } + else { + int b; + do { + b = module[i++]; + *dest++ = b; + } while (i < module_len && b != 0x0a); + } + } + dest = put_durations(dest, module_info); + module_len -= i; + memcpy(dest, module + i, module_len); + dest += module_len; + return dest - out_module; +} + +#if !defined(ASAP_ONLY_SAP) && !defined(ASAP_ONLY_INFO) + +#define RMT_INIT 0x0c80 +#define TM2_INIT 0x1080 + +const char *ASAP_CanConvert( + const char *filename, const ASAP_ModuleInfo *module_info, + const BYTEARRAY module, int module_len) +{ + (void) filename; + switch (module_info->type) { + case ASAP_TYPE_SAP_B: + if ((module_info->init == 0x3fb || module_info->init == 0x3f9) && module_info->player == 0x503) + return "dlt"; + if (module_info->init == 0x4f3 || module_info->init == 0xf4f3 || module_info->init == 0x4ef) + return module_info->fastplay == 156 ? "mpd" : "mpt"; + if (module_info->init == RMT_INIT) + return "rmt"; + if ((module_info->init == 0x4f5 || module_info->init == 0xf4f5 || module_info->init == 0x4f2) + || ((module_info->init == 0x4e7 || module_info->init == 0xf4e7 || module_info->init == 0x4e4) && module_info->fastplay == 156) + || ((module_info->init == 0x4e5 || module_info->init == 0xf4e5 || module_info->init == 0x4e2) && (module_info->fastplay == 104 || module_info->fastplay == 78))) + return "tmc"; + if (module_info->init == TM2_INIT) + return "tm2"; + break; + case ASAP_TYPE_SAP_C: + if (module_info->player == 0x500 || module_info->player == 0xf500) { + if (module_info->fastplay == 156) + return "dmc"; + if (module_info->channels > 1) + return "cms"; + if (module[module_len - 170] == 0x1e) + return "cmr"; + if (module[module_len - 909] == 0x30) + return "cm3"; + return "cmc"; + } + break; + case ASAP_TYPE_CMC: + case ASAP_TYPE_CM3: + case ASAP_TYPE_CMR: + case ASAP_TYPE_CMS: + case ASAP_TYPE_DLT: + case ASAP_TYPE_MPT: + case ASAP_TYPE_RMT: + case ASAP_TYPE_TMC: + case ASAP_TYPE_TM2: + return "sap"; + default: + break; + } + return NULL; +} + +static byte *put_hex_tag(byte *dest, const char *tag, int value) +{ + int i; + if (value < 0) + return dest; + dest = put_string(dest, tag); + for (i = 12; i >= 0; i -= 4) { + int digit = (value >> i) & 0xf; + *dest++ = (byte) (digit + (digit < 10 ? '0' : 'A' - 10)); + } + *dest++ = '\r'; + *dest++ = '\n'; + return dest; +} + +static byte *put_sap_header(byte *dest, const ASAP_ModuleInfo *module_info, char type, int music, int init, int player) +{ + dest = start_sap_header(dest, module_info); + if (dest == NULL) + return NULL; + dest = put_string(dest, "TYPE "); + *dest++ = type; + *dest++ = '\r'; + *dest++ = '\n'; + if (module_info->fastplay != 312) + dest = put_dec_tag(dest, "FASTPLAY ", module_info->fastplay); + dest = put_hex_tag(dest, "MUSIC ", music); + dest = put_hex_tag(dest, "INIT ", init); + dest = put_hex_tag(dest, "PLAYER ", player); + dest = put_durations(dest, module_info); + return dest; +} + +int ASAP_Convert( + const char *filename, const ASAP_ModuleInfo *module_info, + const BYTEARRAY module, int module_len, BYTEARRAY out_module) +{ + (void) filename; + int out_len; + byte *dest; + int addr; + int player; + static const int tmc_player[4] = { 3, -9, -10, -10 }; + static const int tmc_init[4] = { -14, -16, -17, -17 }; + switch (module_info->type) { + case ASAP_TYPE_SAP_B: + case ASAP_TYPE_SAP_C: + out_len = UWORD(module, module_info->header_len + 4) - UWORD(module, module_info->header_len + 2) + 7; + if (out_len < 7 || module_info->header_len + out_len >= module_len) + return -1; + memcpy(out_module, module + module_info->header_len, out_len); + return out_len; + case ASAP_TYPE_CMC: + case ASAP_TYPE_CM3: + case ASAP_TYPE_CMR: + case ASAP_TYPE_CMS: + dest = put_sap_header(out_module, module_info, 'C', module_info->music, -1, module_info->player); + if (dest == NULL) + return -1; + memcpy(dest, module, module_len); + dest[0] = 0xff; /* some modules start with zeros */ + dest[1] = 0xff; + dest += module_len; + if (module_info->type == ASAP_TYPE_CM3) { + memcpy(dest, cm3_obx + 2, sizeof(cm3_obx) - 2); + dest += sizeof(cm3_obx) - 2; + } + else if (module_info->type == ASAP_TYPE_CMS) { + memcpy(dest, cms_obx + 2, sizeof(cms_obx) - 2); + dest += sizeof(cms_obx) - 2; + } + else { + memcpy(dest, cmc_obx + 2, sizeof(cmc_obx) - 2); + if (module_info->type == ASAP_TYPE_CMR) + memcpy(dest + 4 + CMR_BASS_TABLE_OFFSET, cmr_bass_table, sizeof(cmr_bass_table)); + dest += sizeof(cmc_obx) - 2; + } + return dest - out_module; + case ASAP_TYPE_DLT: + if (module_info->songs != 1) { + addr = module_info->player - 7 - module_info->songs; + dest = put_sap_header(out_module, module_info, 'B', -1, module_info->player - 7, module_info->player + 0x103); + } + else { + addr = module_info->player - 5; + dest = put_sap_header(out_module, module_info, 'B', -1, addr, module_info->player + 0x103); + } + if (dest == NULL) + return -1; + memcpy(dest, module, module_len); + if (module_len == 0x2c06) { + dest[4] = 0; + dest[5] = 0x4c; + dest[0x2c06] = 0; + } + dest += 0x2c07; + *dest++ = (byte) addr; + *dest++ = (byte) (addr >> 8); + *dest++ = dlt_obx[4]; + *dest++ = dlt_obx[5]; + if (module_info->songs != 1) { + memcpy(dest, module_info->song_pos, module_info->songs); + dest += module_info->songs; + *dest++ = 0xaa; /* tax */ + *dest++ = 0xbc; /* ldy song2pos,x */ + *dest++ = (byte) addr; + *dest++ = (byte) (addr >> 8); + } + else { + *dest++ = 0xa0; /* ldy #0 */ + *dest++ = 0; + } + *dest++ = 0x4c; /* jmp init */ + *dest++ = (byte) module_info->player; + *dest++ = (byte) ((module_info->player >> 8) + 1); + memcpy(dest, dlt_obx + 6, sizeof(dlt_obx) - 6); + dest += sizeof(dlt_obx) - 6; + return dest - out_module; + case ASAP_TYPE_MPT: + if (module_info->songs != 1) { + addr = module_info->player - 17 - module_info->songs; + dest = put_sap_header(out_module, module_info, 'B', -1, module_info->player - 17, module_info->player + 3); + } + else { + addr = module_info->player - 13; + dest = put_sap_header(out_module, module_info, 'B', -1, addr, module_info->player + 3); + } + if (dest == NULL) + return -1; + memcpy(dest, module, module_len); + dest += module_len; + *dest++ = (byte) addr; + *dest++ = (byte) (addr >> 8); + *dest++ = mpt_obx[4]; + *dest++ = mpt_obx[5]; + if (module_info->songs != 1) { + memcpy(dest, module_info->song_pos, module_info->songs); + dest += module_info->songs; + *dest++ = 0x48; /* pha */ + } + *dest++ = 0xa0; /* ldy #music; + *dest++ = 0xa2; /* ldx #>music */ + *dest++ = (byte) (module_info->music >> 8); + *dest++ = 0xa9; /* lda #0 */ + *dest++ = 0; + *dest++ = 0x20; /* jsr player */ + *dest++ = (byte) module_info->player; + *dest++ = (byte) (module_info->player >> 8); + if (module_info->songs != 1) { + *dest++ = 0x68; /* pla */ + *dest++ = 0xa8; /* tay */ + *dest++ = 0xbe; /* ldx song2pos,y */ + *dest++ = (byte) addr; + *dest++ = (byte) (addr >> 8); + } + else { + *dest++ = 0xa2; /* ldx #0 */ + *dest++ = 0; + } + *dest++ = 0xa9; /* lda #2 */ + *dest++ = 2; + memcpy(dest, mpt_obx + 6, sizeof(mpt_obx) - 6); + dest += sizeof(mpt_obx) - 6; + return dest - out_module; + case ASAP_TYPE_RMT: + dest = put_sap_header(out_module, module_info, 'B', -1, RMT_INIT, module_info->player + 3); + if (dest == NULL) + return -1; + memcpy(dest, module, module_len); + dest += module_len; + *dest++ = (byte) RMT_INIT; + *dest++ = (byte) (RMT_INIT >> 8); + if (module_info->songs != 1) { + addr = RMT_INIT + 10 + module_info->songs; + *dest++ = (byte) addr; + *dest++ = (byte) (addr >> 8); + *dest++ = 0xa8; /* tay */ + *dest++ = 0xb9; /* lda song2pos,y */ + *dest++ = (byte) (RMT_INIT + 11); + *dest++ = (byte) ((RMT_INIT + 11) >> 8); + } + else { + *dest++ = (byte) (RMT_INIT + 8); + *dest++ = (byte) ((RMT_INIT + 8) >> 8); + *dest++ = 0xa9; /* lda #0 */ + *dest++ = 0; + } + *dest++ = 0xa2; /* ldx #music; + *dest++ = 0xa0; /* ldy #>music */ + *dest++ = (byte) (module_info->music >> 8); + *dest++ = 0x4c; /* jmp player */ + *dest++ = (byte) module_info->player; + *dest++ = (byte) (module_info->player >> 8); + if (module_info->songs != 1) { + memcpy(dest, module_info->song_pos, module_info->songs); + dest += module_info->songs; + } + if (module_info->channels == 1) { + memcpy(dest, rmt4_obx + 2, sizeof(rmt4_obx) - 2); + dest += sizeof(rmt4_obx) - 2; + } + else { + memcpy(dest, rmt8_obx + 2, sizeof(rmt8_obx) - 2); + dest += sizeof(rmt8_obx) - 2; + } + return dest - out_module; + case ASAP_TYPE_TMC: + player = module_info->player + tmc_player[module[0x25] - 1]; + addr = player + tmc_init[module[0x25] - 1]; + if (module_info->songs != 1) + addr -= 3; + dest = put_sap_header(out_module, module_info, 'B', -1, addr, player); + if (dest == NULL) + return -1; + memcpy(dest, module, module_len); + dest += module_len; + *dest++ = (byte) addr; + *dest++ = (byte) (addr >> 8); + *dest++ = tmc_obx[4]; + *dest++ = tmc_obx[5]; + if (module_info->songs != 1) + *dest++ = 0x48; /* pha */ + *dest++ = 0xa0; /* ldy #music; + *dest++ = 0xa2; /* ldx #>music */ + *dest++ = (byte) (module_info->music >> 8); + *dest++ = 0xa9; /* lda #$70 */ + *dest++ = 0x70; + *dest++ = 0x20; /* jsr player */ + *dest++ = (byte) module_info->player; + *dest++ = (byte) (module_info->player >> 8); + if (module_info->songs != 1) { + *dest++ = 0x68; /* pla */ + *dest++ = 0xaa; /* tax */ + *dest++ = 0xa9; /* lda #0 */ + *dest++ = 0; + } + else { + *dest++ = 0xa9; /* lda #$60 */ + *dest++ = 0x60; + } + switch (module[0x25]) { + case 2: + *dest++ = 0x06; /* asl 0 */ + *dest++ = 0; + *dest++ = 0x4c; /* jmp player */ + *dest++ = (byte) module_info->player; + *dest++ = (byte) (module_info->player >> 8); + *dest++ = 0xa5; /* lda 0 */ + *dest++ = 0; + *dest++ = 0xe6; /* inc 0 */ + *dest++ = 0; + *dest++ = 0x4a; /* lsr @ */ + *dest++ = 0x90; /* bcc player+3 */ + *dest++ = 5; + *dest++ = 0xb0; /* bcs player+6 */ + *dest++ = 6; + break; + case 3: + case 4: + *dest++ = 0xa0; /* ldy #1 */ + *dest++ = 1; + *dest++ = 0x84; /* sty 0 */ + *dest++ = 0; + *dest++ = 0xd0; /* bne player */ + *dest++ = 10; + *dest++ = 0xc6; /* dec 0 */ + *dest++ = 0; + *dest++ = 0xd0; /* bne player+6 */ + *dest++ = 12; + *dest++ = 0xa0; /* ldy #3 */ + *dest++ = module[0x25]; + *dest++ = 0x84; /* sty 0 */ + *dest++ = 0; + *dest++ = 0xd0; /* bne player+3 */ + *dest++ = 3; + break; + default: + break; + } + memcpy(dest, tmc_obx + 6, sizeof(tmc_obx) - 6); + dest += sizeof(tmc_obx) - 6; + return dest - out_module; + case ASAP_TYPE_TM2: + dest = put_sap_header(out_module, module_info, 'B', -1, TM2_INIT, module_info->player + 3); + if (dest == NULL) + return -1; + memcpy(dest, module, module_len); + dest += module_len; + *dest++ = (byte) TM2_INIT; + *dest++ = (byte) (TM2_INIT >> 8); + if (module_info->songs != 1) { + *dest++ = (byte) (TM2_INIT + 16); + *dest++ = (byte) ((TM2_INIT + 16) >> 8); + *dest++ = 0x48; /* pha */ + } + else { + *dest++ = (byte) (TM2_INIT + 14); + *dest++ = (byte) ((TM2_INIT + 14) >> 8); + } + *dest++ = 0xa0; /* ldy #music; + *dest++ = 0xa2; /* ldx #>music */ + *dest++ = (byte) (module_info->music >> 8); + *dest++ = 0xa9; /* lda #$70 */ + *dest++ = 0x70; + *dest++ = 0x20; /* jsr player */ + *dest++ = (byte) module_info->player; + *dest++ = (byte) (module_info->player >> 8); + if (module_info->songs != 1) { + *dest++ = 0x68; /* pla */ + *dest++ = 0xaa; /* tax */ + *dest++ = 0xa9; /* lda #0 */ + *dest++ = 0; + } + else { + *dest++ = 0xa9; /* lda #0 */ + *dest++ = 0; + *dest++ = 0xaa; /* tax */ + } + *dest++ = 0x4c; /* jmp player */ + *dest++ = (byte) module_info->player; + *dest++ = (byte) (module_info->player >> 8); + memcpy(dest, tm2_obx + 2, sizeof(tm2_obx) - 2); + dest += sizeof(tm2_obx) - 2; + return dest - out_module; + default: + return -1; + } +} + +#endif /* !defined(ASAP_ONLY_SAP) && !defined(ASAP_ONLY_INFO) */ + +static abool has_two_digits(const char *s) +{ + return s[0] >= '0' && s[0] <= '9' && s[1] >= '0' && s[1] <= '9'; +} + +/* "DD/MM/YYYY", "MM/YYYY", "YYYY" -> "YYYY" */ +abool ASAP_DateToYear(const char *date, char *year) +{ + if (!has_two_digits(date)) + return FALSE; + if (date[2] == '/') { + date += 3; + if (!has_two_digits(date)) + return FALSE; + if (date[2] == '/') { + date += 3; + if (!has_two_digits(date)) + return FALSE; + } + } + if (!has_two_digits(date + 2) || date[4] != '\0') + return FALSE; + memcpy(year, date, 5); + return TRUE; +} + +#endif /* C */ -- cgit v1.2.3