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2ba45a60 DM |
1 | /* |
2 | * This file is part of FFmpeg. | |
3 | * | |
4 | * FFmpeg is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU Lesser General Public | |
6 | * License as published by the Free Software Foundation; either | |
7 | * version 2.1 of the License, or (at your option) any later version. | |
8 | * | |
9 | * FFmpeg is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | * Lesser General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU Lesser General Public | |
15 | * License along with FFmpeg; if not, write to the Free Software | |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
17 | */ | |
18 | ||
19 | /** | |
20 | * @file | |
21 | * ModPlug demuxer | |
22 | * @todo better probing than extensions matching | |
23 | */ | |
24 | ||
25 | #define MODPLUG_STATIC | |
26 | #include <libmodplug/modplug.h> | |
27 | #include "libavutil/avstring.h" | |
28 | #include "libavutil/eval.h" | |
29 | #include "libavutil/opt.h" | |
30 | #include "avformat.h" | |
31 | #include "internal.h" | |
32 | ||
33 | typedef struct ModPlugContext { | |
34 | const AVClass *class; | |
35 | ModPlugFile *f; | |
36 | uint8_t *buf; ///< input file content | |
37 | ||
38 | /* options */ | |
39 | int noise_reduction; | |
40 | int reverb_depth; | |
41 | int reverb_delay; | |
42 | int bass_amount; | |
43 | int bass_range; | |
44 | int surround_depth; | |
45 | int surround_delay; | |
46 | ||
47 | int max_size; ///< max file size to allocate | |
48 | ||
49 | /* optional video stream */ | |
50 | double ts_per_packet; ///< used to define the pts/dts using packet_count; | |
51 | int packet_count; ///< total number of audio packets | |
52 | int print_textinfo; ///< bool flag for printing speed, tempo, order, ... | |
53 | int video_stream; ///< 1 if the user want a video stream, otherwise 0 | |
54 | int w; ///< video stream width in char (one char = 8x8px) | |
55 | int h; ///< video stream height in char (one char = 8x8px) | |
56 | int video_switch; ///< 1 if current packet is video, otherwise 0 | |
57 | int fsize; ///< constant frame size | |
58 | int linesize; ///< line size in bytes | |
59 | char *color_eval; ///< color eval user input expression | |
60 | AVExpr *expr; ///< parsed color eval expression | |
61 | } ModPlugContext; | |
62 | ||
63 | static const char * const var_names[] = { | |
64 | "x", "y", | |
65 | "w", "h", | |
66 | "t", | |
67 | "speed", "tempo", "order", "pattern", "row", | |
68 | NULL | |
69 | }; | |
70 | ||
71 | enum var_name { | |
72 | VAR_X, VAR_Y, | |
73 | VAR_W, VAR_H, | |
74 | VAR_TIME, | |
75 | VAR_SPEED, VAR_TEMPO, VAR_ORDER, VAR_PATTERN, VAR_ROW, | |
76 | VAR_VARS_NB | |
77 | }; | |
78 | ||
79 | #define FF_MODPLUG_MAX_FILE_SIZE (100 * 1<<20) // 100M | |
80 | #define FF_MODPLUG_DEF_FILE_SIZE ( 5 * 1<<20) // 5M | |
81 | ||
82 | #define OFFSET(x) offsetof(ModPlugContext, x) | |
83 | #define D AV_OPT_FLAG_DECODING_PARAM | |
84 | static const AVOption options[] = { | |
85 | {"noise_reduction", "Enable noise reduction 0(off)-1(on)", OFFSET(noise_reduction), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, D}, | |
86 | {"reverb_depth", "Reverb level 0(quiet)-100(loud)", OFFSET(reverb_depth), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 100, D}, | |
87 | {"reverb_delay", "Reverb delay in ms, usually 40-200ms", OFFSET(reverb_delay), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, D}, | |
88 | {"bass_amount", "XBass level 0(quiet)-100(loud)", OFFSET(bass_amount), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 100, D}, | |
89 | {"bass_range", "XBass cutoff in Hz 10-100", OFFSET(bass_range), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 100, D}, | |
90 | {"surround_depth", "Surround level 0(quiet)-100(heavy)", OFFSET(surround_depth), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 100, D}, | |
91 | {"surround_delay", "Surround delay in ms, usually 5-40ms", OFFSET(surround_delay), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, D}, | |
92 | {"max_size", "Max file size supported (in bytes). Default is 5MB. Set to 0 for no limit (not recommended)", | |
93 | OFFSET(max_size), AV_OPT_TYPE_INT, {.i64 = FF_MODPLUG_DEF_FILE_SIZE}, 0, FF_MODPLUG_MAX_FILE_SIZE, D}, | |
94 | {"video_stream_expr", "Color formula", OFFSET(color_eval), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, D}, | |
95 | {"video_stream", "Make demuxer output a video stream", OFFSET(video_stream), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, D}, | |
96 | {"video_stream_w", "Video stream width in char (one char = 8x8px)", OFFSET(w), AV_OPT_TYPE_INT, {.i64 = 30}, 20, 512, D}, | |
97 | {"video_stream_h", "Video stream height in char (one char = 8x8px)", OFFSET(h), AV_OPT_TYPE_INT, {.i64 = 30}, 20, 512, D}, | |
98 | {"video_stream_ptxt", "Print speed, tempo, order, ... in video stream", OFFSET(print_textinfo), AV_OPT_TYPE_INT, {.i64 = 1}, 0, 1, D}, | |
99 | {NULL}, | |
100 | }; | |
101 | ||
102 | #define SET_OPT_IF_REQUESTED(libopt, opt, flag) do { \ | |
103 | if (modplug->opt) { \ | |
104 | settings.libopt = modplug->opt; \ | |
105 | settings.mFlags |= flag; \ | |
106 | } \ | |
107 | } while (0) | |
108 | ||
109 | #define ADD_META_MULTIPLE_ENTRIES(entry_name, fname) do { \ | |
110 | if (n_## entry_name ##s) { \ | |
111 | unsigned i, n = 0; \ | |
112 | \ | |
113 | for (i = 0; i < n_## entry_name ##s; i++) { \ | |
114 | char item_name[64] = {0}; \ | |
115 | fname(f, i, item_name); \ | |
116 | if (!*item_name) \ | |
117 | continue; \ | |
118 | if (n) \ | |
119 | av_dict_set(&s->metadata, #entry_name, "\n", AV_DICT_APPEND); \ | |
120 | av_dict_set(&s->metadata, #entry_name, item_name, AV_DICT_APPEND); \ | |
121 | n++; \ | |
122 | } \ | |
123 | \ | |
124 | extra = av_asprintf(", %u/%u " #entry_name "%s", \ | |
125 | n, n_## entry_name ##s, n > 1 ? "s" : ""); \ | |
126 | if (!extra) \ | |
127 | return AVERROR(ENOMEM); \ | |
128 | av_dict_set(&s->metadata, "extra info", extra, AV_DICT_APPEND); \ | |
129 | av_free(extra); \ | |
130 | } \ | |
131 | } while (0) | |
132 | ||
133 | static int modplug_load_metadata(AVFormatContext *s) | |
134 | { | |
135 | ModPlugContext *modplug = s->priv_data; | |
136 | ModPlugFile *f = modplug->f; | |
137 | char *extra; | |
138 | const char *name = ModPlug_GetName(f); | |
139 | const char *msg = ModPlug_GetMessage(f); | |
140 | ||
141 | unsigned n_instruments = ModPlug_NumInstruments(f); | |
142 | unsigned n_samples = ModPlug_NumSamples(f); | |
143 | unsigned n_patterns = ModPlug_NumPatterns(f); | |
144 | unsigned n_channels = ModPlug_NumChannels(f); | |
145 | ||
146 | if (name && *name) av_dict_set(&s->metadata, "name", name, 0); | |
147 | if (msg && *msg) av_dict_set(&s->metadata, "message", msg, 0); | |
148 | ||
149 | extra = av_asprintf("%u pattern%s, %u channel%s", | |
150 | n_patterns, n_patterns > 1 ? "s" : "", | |
151 | n_channels, n_channels > 1 ? "s" : ""); | |
152 | if (!extra) | |
153 | return AVERROR(ENOMEM); | |
154 | av_dict_set(&s->metadata, "extra info", extra, AV_DICT_DONT_STRDUP_VAL); | |
155 | ||
156 | ADD_META_MULTIPLE_ENTRIES(instrument, ModPlug_InstrumentName); | |
157 | ADD_META_MULTIPLE_ENTRIES(sample, ModPlug_SampleName); | |
158 | ||
159 | return 0; | |
160 | } | |
161 | ||
162 | #define AUDIO_PKT_SIZE 512 | |
163 | ||
164 | static int modplug_read_header(AVFormatContext *s) | |
165 | { | |
166 | AVStream *st; | |
167 | AVIOContext *pb = s->pb; | |
168 | ModPlug_Settings settings; | |
169 | ModPlugContext *modplug = s->priv_data; | |
170 | int64_t sz = avio_size(pb); | |
171 | ||
172 | if (sz < 0) { | |
173 | av_log(s, AV_LOG_WARNING, "Could not determine file size\n"); | |
174 | sz = modplug->max_size; | |
175 | } else if (modplug->max_size && sz > modplug->max_size) { | |
176 | sz = modplug->max_size; | |
177 | av_log(s, AV_LOG_WARNING, "Max file size reach%s, allocating %"PRIi64"B " | |
178 | "but demuxing is likely to fail due to incomplete buffer\n", | |
179 | sz == FF_MODPLUG_DEF_FILE_SIZE ? " (see -max_size)" : "", sz); | |
180 | } | |
181 | ||
182 | if (modplug->color_eval) { | |
183 | int r = av_expr_parse(&modplug->expr, modplug->color_eval, var_names, | |
184 | NULL, NULL, NULL, NULL, 0, s); | |
185 | if (r < 0) | |
186 | return r; | |
187 | } | |
188 | ||
189 | modplug->buf = av_malloc(modplug->max_size); | |
190 | if (!modplug->buf) | |
191 | return AVERROR(ENOMEM); | |
192 | sz = avio_read(pb, modplug->buf, sz); | |
193 | ||
194 | ModPlug_GetSettings(&settings); | |
195 | settings.mChannels = 2; | |
196 | settings.mBits = 16; | |
197 | settings.mFrequency = 44100; | |
198 | settings.mResamplingMode = MODPLUG_RESAMPLE_FIR; // best quality | |
199 | settings.mLoopCount = 0; // prevents looping forever | |
200 | ||
201 | if (modplug->noise_reduction) settings.mFlags |= MODPLUG_ENABLE_NOISE_REDUCTION; | |
202 | SET_OPT_IF_REQUESTED(mReverbDepth, reverb_depth, MODPLUG_ENABLE_REVERB); | |
203 | SET_OPT_IF_REQUESTED(mReverbDelay, reverb_delay, MODPLUG_ENABLE_REVERB); | |
204 | SET_OPT_IF_REQUESTED(mBassAmount, bass_amount, MODPLUG_ENABLE_MEGABASS); | |
205 | SET_OPT_IF_REQUESTED(mBassRange, bass_range, MODPLUG_ENABLE_MEGABASS); | |
206 | SET_OPT_IF_REQUESTED(mSurroundDepth, surround_depth, MODPLUG_ENABLE_SURROUND); | |
207 | SET_OPT_IF_REQUESTED(mSurroundDelay, surround_delay, MODPLUG_ENABLE_SURROUND); | |
208 | ||
209 | if (modplug->reverb_depth) settings.mReverbDepth = modplug->reverb_depth; | |
210 | if (modplug->reverb_delay) settings.mReverbDelay = modplug->reverb_delay; | |
211 | if (modplug->bass_amount) settings.mBassAmount = modplug->bass_amount; | |
212 | if (modplug->bass_range) settings.mBassRange = modplug->bass_range; | |
213 | if (modplug->surround_depth) settings.mSurroundDepth = modplug->surround_depth; | |
214 | if (modplug->surround_delay) settings.mSurroundDelay = modplug->surround_delay; | |
215 | ||
216 | ModPlug_SetSettings(&settings); | |
217 | ||
218 | modplug->f = ModPlug_Load(modplug->buf, sz); | |
219 | if (!modplug->f) | |
220 | return AVERROR_INVALIDDATA; | |
221 | ||
222 | st = avformat_new_stream(s, NULL); | |
223 | if (!st) | |
224 | return AVERROR(ENOMEM); | |
225 | avpriv_set_pts_info(st, 64, 1, 1000); | |
226 | st->duration = ModPlug_GetLength(modplug->f); | |
227 | st->codec->codec_type = AVMEDIA_TYPE_AUDIO; | |
228 | st->codec->codec_id = AV_CODEC_ID_PCM_S16LE; | |
229 | st->codec->channels = settings.mChannels; | |
230 | st->codec->sample_rate = settings.mFrequency; | |
231 | ||
232 | // timebase = 1/1000, 2ch 16bits 44.1kHz-> 2*2*44100 | |
233 | modplug->ts_per_packet = 1000*AUDIO_PKT_SIZE / (4*44100.); | |
234 | ||
235 | if (modplug->video_stream) { | |
236 | AVStream *vst = avformat_new_stream(s, NULL); | |
237 | if (!vst) | |
238 | return AVERROR(ENOMEM); | |
239 | avpriv_set_pts_info(vst, 64, 1, 1000); | |
240 | vst->duration = st->duration; | |
241 | vst->codec->codec_type = AVMEDIA_TYPE_VIDEO; | |
242 | vst->codec->codec_id = AV_CODEC_ID_XBIN; | |
243 | vst->codec->width = modplug->w << 3; | |
244 | vst->codec->height = modplug->h << 3; | |
245 | modplug->linesize = modplug->w * 3; | |
246 | modplug->fsize = modplug->linesize * modplug->h; | |
247 | } | |
248 | ||
249 | return modplug_load_metadata(s); | |
250 | } | |
251 | ||
252 | static void write_text(uint8_t *dst, const char *s, int linesize, int x, int y) | |
253 | { | |
254 | int i; | |
255 | dst += y*linesize + x*3; | |
256 | for (i = 0; s[i]; i++, dst += 3) { | |
257 | dst[0] = 0x0; // count - 1 | |
258 | dst[1] = s[i]; // char | |
259 | dst[2] = 0x0f; // background / foreground | |
260 | } | |
261 | } | |
262 | ||
263 | #define PRINT_INFO(line, name, idvalue) do { \ | |
264 | snprintf(intbuf, sizeof(intbuf), "%.0f", var_values[idvalue]); \ | |
265 | write_text(pkt->data, name ":", modplug->linesize, 0+1, line+1); \ | |
266 | write_text(pkt->data, intbuf, modplug->linesize, 10+1, line+1); \ | |
267 | } while (0) | |
268 | ||
269 | static int modplug_read_packet(AVFormatContext *s, AVPacket *pkt) | |
270 | { | |
271 | ModPlugContext *modplug = s->priv_data; | |
272 | ||
273 | if (modplug->video_stream) { | |
274 | modplug->video_switch ^= 1; // one video packet for one audio packet | |
275 | if (modplug->video_switch) { | |
276 | double var_values[VAR_VARS_NB]; | |
277 | ||
278 | var_values[VAR_W ] = modplug->w; | |
279 | var_values[VAR_H ] = modplug->h; | |
280 | var_values[VAR_TIME ] = modplug->packet_count * modplug->ts_per_packet; | |
281 | var_values[VAR_SPEED ] = ModPlug_GetCurrentSpeed (modplug->f); | |
282 | var_values[VAR_TEMPO ] = ModPlug_GetCurrentTempo (modplug->f); | |
283 | var_values[VAR_ORDER ] = ModPlug_GetCurrentOrder (modplug->f); | |
284 | var_values[VAR_PATTERN] = ModPlug_GetCurrentPattern(modplug->f); | |
285 | var_values[VAR_ROW ] = ModPlug_GetCurrentRow (modplug->f); | |
286 | ||
287 | if (av_new_packet(pkt, modplug->fsize) < 0) | |
288 | return AVERROR(ENOMEM); | |
289 | pkt->stream_index = 1; | |
290 | memset(pkt->data, 0, modplug->fsize); | |
291 | ||
292 | if (modplug->print_textinfo) { | |
293 | char intbuf[32]; | |
294 | PRINT_INFO(0, "speed", VAR_SPEED); | |
295 | PRINT_INFO(1, "tempo", VAR_TEMPO); | |
296 | PRINT_INFO(2, "order", VAR_ORDER); | |
297 | PRINT_INFO(3, "pattern", VAR_PATTERN); | |
298 | PRINT_INFO(4, "row", VAR_ROW); | |
299 | PRINT_INFO(5, "ts", VAR_TIME); | |
300 | } | |
301 | ||
302 | if (modplug->expr) { | |
303 | int x, y; | |
304 | for (y = 0; y < modplug->h; y++) { | |
305 | for (x = 0; x < modplug->w; x++) { | |
306 | double color; | |
307 | var_values[VAR_X] = x; | |
308 | var_values[VAR_Y] = y; | |
309 | color = av_expr_eval(modplug->expr, var_values, NULL); | |
310 | pkt->data[y*modplug->linesize + x*3 + 2] |= av_clip((int)color, 0, 0xf)<<4; | |
311 | } | |
312 | } | |
313 | } | |
314 | pkt->pts = pkt->dts = var_values[VAR_TIME]; | |
315 | pkt->flags |= AV_PKT_FLAG_KEY; | |
316 | return 0; | |
317 | } | |
318 | } | |
319 | ||
320 | if (av_new_packet(pkt, AUDIO_PKT_SIZE) < 0) | |
321 | return AVERROR(ENOMEM); | |
322 | ||
323 | if (modplug->video_stream) | |
324 | pkt->pts = pkt->dts = modplug->packet_count++ * modplug->ts_per_packet; | |
325 | ||
326 | pkt->size = ModPlug_Read(modplug->f, pkt->data, AUDIO_PKT_SIZE); | |
327 | if (pkt->size <= 0) { | |
328 | av_free_packet(pkt); | |
329 | return pkt->size == 0 ? AVERROR_EOF : AVERROR(EIO); | |
330 | } | |
331 | return 0; | |
332 | } | |
333 | ||
334 | static int modplug_read_close(AVFormatContext *s) | |
335 | { | |
336 | ModPlugContext *modplug = s->priv_data; | |
337 | ModPlug_Unload(modplug->f); | |
338 | av_freep(&modplug->buf); | |
339 | return 0; | |
340 | } | |
341 | ||
342 | static int modplug_read_seek(AVFormatContext *s, int stream_idx, int64_t ts, int flags) | |
343 | { | |
344 | ModPlugContext *modplug = s->priv_data; | |
345 | ModPlug_Seek(modplug->f, (int)ts); | |
346 | if (modplug->video_stream) | |
347 | modplug->packet_count = ts / modplug->ts_per_packet; | |
348 | return 0; | |
349 | } | |
350 | ||
351 | static const char modplug_extensions[] = "669,abc,amf,ams,dbm,dmf,dsm,far,it,mdl,med,mid,mod,mt2,mtm,okt,psm,ptm,s3m,stm,ult,umx,xm,itgz,itr,itz,mdgz,mdr,mdz,s3gz,s3r,s3z,xmgz,xmr,xmz"; | |
352 | ||
353 | static int modplug_probe(AVProbeData *p) | |
354 | { | |
355 | if (av_match_ext(p->filename, modplug_extensions)) { | |
356 | if (p->buf_size < 16384) | |
357 | return AVPROBE_SCORE_EXTENSION/2-1; | |
358 | else | |
359 | return AVPROBE_SCORE_EXTENSION; | |
360 | } | |
361 | return 0; | |
362 | } | |
363 | ||
364 | static const AVClass modplug_class = { | |
365 | .class_name = "ModPlug demuxer", | |
366 | .item_name = av_default_item_name, | |
367 | .option = options, | |
368 | .version = LIBAVUTIL_VERSION_INT, | |
369 | }; | |
370 | ||
371 | AVInputFormat ff_libmodplug_demuxer = { | |
372 | .name = "libmodplug", | |
373 | .long_name = NULL_IF_CONFIG_SMALL("ModPlug demuxer"), | |
374 | .priv_data_size = sizeof(ModPlugContext), | |
375 | .read_probe = modplug_probe, | |
376 | .read_header = modplug_read_header, | |
377 | .read_packet = modplug_read_packet, | |
378 | .read_close = modplug_read_close, | |
379 | .read_seek = modplug_read_seek, | |
380 | .extensions = modplug_extensions, | |
381 | .priv_class = &modplug_class, | |
382 | }; |