1 /*
2 * Demuxer for avisynth
3 * Copyright (c) 2005 Gianluigi Tiesi <sherpya@netfarm.it>
4 *
5 * This file is part of MPlayer.
6 *
7 * MPlayer is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * MPlayer is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public License
18 * along with MPlayer; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20 */
21
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <unistd.h>
25 #include <limits.h>
26
27 #include "config.h"
28 #include "mp_msg.h"
29 #include "help_mp.h"
30
31 #include "stream/stream.h"
32 #include "demuxer.h"
33 #include "stheader.h"
34 #include "libvo/fastmemcpy.h"
35
36 #include "loader/wine/winbase.h"
37 #include "loader/wine/windef.h"
38
39 #ifdef WIN32_LOADER
40 #include "loader/ldt_keeper.h"
41 #endif
42
43 #include "demux_avs.h"
44
45 #define MAX_AVS_SIZE 16 * 1024 /* 16k should be enough */
46
47 typedef WINAPI AVS_ScriptEnvironment* (*imp_avs_create_script_environment)(int version);
48 typedef WINAPI AVS_Value (*imp_avs_invoke)(AVS_ScriptEnvironment *, const char * name, AVS_Value args, const char** arg_names);
49 typedef WINAPI const AVS_VideoInfo *(*imp_avs_get_video_info)(AVS_Clip *);
50 typedef WINAPI AVS_Clip* (*imp_avs_take_clip)(AVS_Value, AVS_ScriptEnvironment *);
51 typedef WINAPI void (*imp_avs_release_clip)(AVS_Clip *);
52 typedef WINAPI AVS_VideoFrame* (*imp_avs_get_frame)(AVS_Clip *, int n);
53 typedef WINAPI void (*imp_avs_release_video_frame)(AVS_VideoFrame *);
54 typedef WINAPI int (*imp_avs_get_audio)(AVS_Clip *, void * buf, uint64_t start, uint64_t count);
55
56 #define Q(string) # string
57 #define IMPORT_FUNC(x) \
58 AVS->x = ( imp_##x ) GetProcAddress(AVS->dll, Q(x)); \
59 if (!AVS->x) { mp_msg(MSGT_DEMUX,MSGL_V,"AVS: failed to load "Q(x)"()\n"); return 0; }
60
61 typedef struct tagAVS
62 {
63 AVS_ScriptEnvironment *avs_env;
64 AVS_Value handler;
65 AVS_Clip *clip;
66 const AVS_VideoInfo *video_info;
67 #ifdef WIN32_LOADER
68 ldt_fs_t* ldt_fs;
69 #endif
70 HMODULE dll;
71 int frameno;
72 uint64_t sampleno;
73 int init;
74
75 imp_avs_create_script_environment avs_create_script_environment;
76 imp_avs_invoke avs_invoke;
77 imp_avs_get_video_info avs_get_video_info;
78 imp_avs_take_clip avs_take_clip;
79 imp_avs_release_clip avs_release_clip;
80 imp_avs_get_frame avs_get_frame;
81 imp_avs_release_video_frame avs_release_video_frame;
82 imp_avs_get_audio avs_get_audio;
83 } AVS_T;
84
initAVS(const char * filename)85 static AVS_T *initAVS(const char *filename)
86 {
87 AVS_T *AVS = calloc(1, sizeof(AVS_T));
88 AVS_Value arg0 = avs_new_value_string(filename);
89 AVS_Value args = avs_new_value_array(&arg0, 1);
90
91 #ifdef WIN32_LOADER
92 AVS->ldt_fs = Setup_LDT_Keeper();
93 #endif
94
95 AVS->dll = LoadLibraryA("avisynth.dll");
96 if(!AVS->dll)
97 {
98 mp_msg(MSGT_DEMUX ,MSGL_V, "AVS: failed to load avisynth.dll\n");
99 goto avs_err;
100 }
101
102 /* Dynamic import of needed stuff from avisynth.dll */
103 IMPORT_FUNC(avs_create_script_environment);
104 IMPORT_FUNC(avs_invoke);
105 IMPORT_FUNC(avs_get_video_info);
106 IMPORT_FUNC(avs_take_clip);
107 IMPORT_FUNC(avs_release_clip);
108 IMPORT_FUNC(avs_get_frame);
109 IMPORT_FUNC(avs_release_video_frame);
110 IMPORT_FUNC(avs_get_audio);
111
112 AVS->avs_env = AVS->avs_create_script_environment(AVISYNTH_INTERFACE_VERSION);
113 if (!AVS->avs_env)
114 {
115 mp_msg(MSGT_DEMUX, MSGL_V, "AVS: avs_create_script_environment failed\n");
116 goto avs_err;
117 }
118
119
120 AVS->handler = AVS->avs_invoke(AVS->avs_env, "Import", args, 0);
121
122 if (avs_is_error(AVS->handler))
123 {
124 mp_msg(MSGT_DEMUX, MSGL_V, "AVS: Avisynth error: %s\n", avs_as_string(AVS->handler));
125 goto avs_err;
126 }
127
128 if (!avs_is_clip(AVS->handler))
129 {
130 mp_msg(MSGT_DEMUX, MSGL_V, "AVS: Avisynth doesn't return a clip\n");
131 goto avs_err;
132 }
133
134 return AVS;
135
136 avs_err:
137 if (AVS->dll) FreeLibrary(AVS->dll);
138 #ifdef WIN32_LOADER
139 Restore_LDT_Keeper(AVS->ldt_fs);
140 #endif
141 free(AVS);
142 return NULL;
143 }
144
145 /* Implement RGB MODES ?? */
146 #if 0
147 static inline int get_mmioFOURCC(const AVS_VideoInfo *v)
148 {
149 if (avs_is_rgb(v)) return mmioFOURCC(8, 'R', 'G', 'B');
150 if (avs_is_rgb24(v)) return mmioFOURCC(24, 'R', 'G', 'B');
151 if (avs_is_rgb32(v)) return mmioFOURCC(32, 'R', 'G', 'B');
152 if (avs_is_yv12(v)) return mmioFOURCC('Y', 'V', '1', '2');
153 if (avs_is_yuy(v)) return mmioFOURCC('Y', 'U', 'Y', ' ');
154 if (avs_is_yuy2(v)) return mmioFOURCC('Y', 'U', 'Y', '2');
155 return 0;
156 }
157 #endif
158
demux_avs_fill_buffer(demuxer_t * demuxer,demux_stream_t * ds)159 static int demux_avs_fill_buffer(demuxer_t *demuxer, demux_stream_t *ds)
160 {
161 AVS_VideoFrame *curr_frame;
162 demux_packet_t *dp = NULL;
163 AVS_T *AVS = demuxer->priv;
164
165 if (ds == demuxer->video)
166 {
167 sh_video_t *sh_video = demuxer->video->sh;
168 unsigned char *dst;
169 int w, h;
170 if (AVS->video_info->num_frames <= AVS->frameno) return 0; // EOF
171
172 curr_frame = AVS->avs_get_frame(AVS->clip, AVS->frameno);
173 if (!curr_frame)
174 {
175 mp_msg(MSGT_DEMUX, MSGL_V, "AVS: error getting frame -- EOF??\n");
176 return 0;
177 }
178 w = curr_frame->row_size;
179 h = curr_frame->height;
180
181 dp = new_demux_packet(w * h + 2 * (w / 2) * (h / 2));
182
183 dp->pts=AVS->frameno / sh_video->fps;
184
185 dst = dp->buffer;
186 memcpy_pic(dst, curr_frame->vfb->data + curr_frame->offset,
187 w, h, w, curr_frame->pitch);
188 dst += w * h;
189 w /= 2; h /= 2;
190 memcpy_pic(dst, curr_frame->vfb->data + curr_frame->offsetV,
191 w, h, w, curr_frame->pitchUV);
192 dst += w * h;
193 memcpy_pic(dst, curr_frame->vfb->data + curr_frame->offsetU,
194 w, h, w, curr_frame->pitchUV);
195 ds_add_packet(demuxer->video, dp);
196
197 AVS->frameno++;
198 AVS->avs_release_video_frame(curr_frame);
199 }
200
201 /* Audio */
202 if (ds == demuxer->audio)
203 {
204 sh_audio_t *sh_audio = ds->sh;
205 int samples = sh_audio->samplerate;
206 uint64_t l;
207 samples = FFMIN(samples, AVS->video_info->num_audio_samples - AVS->sampleno);
208 if (!samples) return 0;
209 l = samples * sh_audio->channels * sh_audio->samplesize;
210 if (l > INT_MAX) {
211 mp_msg(MSGT_DEMUX, MSGL_FATAL, "AVS: audio packet too big\n");
212 return 0;
213 }
214 dp = new_demux_packet(l);
215 dp->pts = AVS->sampleno / sh_audio->samplerate;
216
217 if (AVS->avs_get_audio(AVS->clip, dp->buffer, AVS->sampleno, samples))
218 {
219 mp_msg(MSGT_DEMUX, MSGL_V, "AVS: avs_get_audio() failed\n");
220 return 0;
221 }
222 ds_add_packet(demuxer->audio, dp);
223
224 AVS->sampleno += samples;
225 }
226
227 return 1;
228 }
229
demux_open_avs(demuxer_t * demuxer)230 static demuxer_t* demux_open_avs(demuxer_t* demuxer)
231 {
232 int found = 0;
233 AVS_T *AVS = demuxer->priv;
234 int audio_samplesize = 0;
235 AVS->frameno = 0;
236 AVS->sampleno = 0;
237
238 mp_msg(MSGT_DEMUX, MSGL_V, "AVS: demux_open_avs()\n");
239 demuxer->seekable = 1;
240
241 AVS->clip = AVS->avs_take_clip(AVS->handler, AVS->avs_env);
242 if(!AVS->clip)
243 {
244 mp_msg(MSGT_DEMUX, MSGL_V, "AVS: avs_take_clip() failed\n");
245 return NULL;
246 }
247
248 AVS->video_info = AVS->avs_get_video_info(AVS->clip);
249 if (!AVS->video_info)
250 {
251 mp_msg(MSGT_DEMUX, MSGL_V, "AVS: avs_get_video_info() call failed\n");
252 return NULL;
253 }
254
255 if (!avs_is_yv12(AVS->video_info))
256 {
257 AVS->handler = AVS->avs_invoke(AVS->avs_env, "ConvertToYV12", avs_new_value_array(&AVS->handler, 1), 0);
258 if (avs_is_error(AVS->handler))
259 {
260 mp_msg(MSGT_DEMUX, MSGL_V, "AVS: Cannot convert input video to YV12: %s\n", avs_as_string(AVS->handler));
261 return NULL;
262 }
263
264 AVS->clip = AVS->avs_take_clip(AVS->handler, AVS->avs_env);
265
266 if(!AVS->clip)
267 {
268 mp_msg(MSGT_DEMUX, MSGL_V, "AVS: avs_take_clip() failed\n");
269 return NULL;
270 }
271
272 AVS->video_info = AVS->avs_get_video_info(AVS->clip);
273 if (!AVS->video_info)
274 {
275 mp_msg(MSGT_DEMUX, MSGL_V, "AVS: avs_get_video_info() call failed\n");
276 return NULL;
277 }
278 }
279
280 // TODO check field-based ??
281
282 /* Video */
283 if (avs_has_video(AVS->video_info))
284 {
285 sh_video_t *sh_video = new_sh_video(demuxer, 0);
286 found = 1;
287
288 if (demuxer->video->id == -1) demuxer->video->id = 0;
289 if (demuxer->video->id == 0)
290 demuxer->video->sh = sh_video;
291
292 sh_video->disp_w = AVS->video_info->width;
293 sh_video->disp_h = AVS->video_info->height;
294
295 //sh_video->format = get_mmioFOURCC(AVS->video_info);
296 sh_video->format = mmioFOURCC('Y', 'V', '1', '2');
297 sh_video->fps = (double) AVS->video_info->fps_numerator / (double) AVS->video_info->fps_denominator;
298 sh_video->frametime = 1.0 / sh_video->fps;
299
300 sh_video->bih = malloc(sizeof(*sh_video->bih) + (256 * 4));
301 sh_video->bih->biCompression = sh_video->format;
302 sh_video->bih->biBitCount = avs_bits_per_pixel(AVS->video_info);
303 //sh_video->bih->biPlanes = 2;
304
305 sh_video->bih->biWidth = AVS->video_info->width;
306 sh_video->bih->biHeight = AVS->video_info->height;
307 sh_video->num_frames = 0;
308 sh_video->num_frames_decoded = 0;
309 }
310
311 /* Audio */
312 if (avs_has_audio(AVS->video_info))
313 switch (AVS->video_info->sample_type) {
314 case AVS_SAMPLE_INT8: audio_samplesize = 1; break;
315 case AVS_SAMPLE_INT16: audio_samplesize = 2; break;
316 case AVS_SAMPLE_INT24: audio_samplesize = 3; break;
317 case AVS_SAMPLE_INT32:
318 case AVS_SAMPLE_FLOAT: audio_samplesize = 4; break;
319 default:
320 mp_msg(MSGT_DEMUX, MSGL_ERR, "AVS: unknown audio type, disabling\n");
321 }
322 if (audio_samplesize)
323 {
324 sh_audio_t *sh_audio = new_sh_audio(demuxer, 0, NULL);
325 found = 1;
326 mp_msg(MSGT_DEMUX, MSGL_V, "AVS: Clip has audio -> Channels = %d - Freq = %d\n", AVS->video_info->nchannels, AVS->video_info->audio_samples_per_second);
327
328 if (demuxer->audio->id == -1) demuxer->audio->id = 0;
329 if (demuxer->audio->id == 0)
330 demuxer->audio->sh = sh_audio;
331
332 sh_audio->wf = malloc(sizeof(*sh_audio->wf));
333 sh_audio->wf->wFormatTag = sh_audio->format =
334 (AVS->video_info->sample_type == AVS_SAMPLE_FLOAT) ? 0x3 : 0x1;
335 sh_audio->wf->nChannels = sh_audio->channels = AVS->video_info->nchannels;
336 sh_audio->wf->nSamplesPerSec = sh_audio->samplerate = AVS->video_info->audio_samples_per_second;
337 sh_audio->samplesize = audio_samplesize;
338 sh_audio->wf->nAvgBytesPerSec = sh_audio->channels * sh_audio->samplesize * sh_audio->samplerate;
339 sh_audio->wf->nBlockAlign = sh_audio->channels * sh_audio->samplesize;
340 sh_audio->wf->wBitsPerSample = sh_audio->samplesize * 8;
341 sh_audio->wf->cbSize = 0;
342 sh_audio->i_bps = sh_audio->wf->nAvgBytesPerSec;
343 }
344
345 AVS->init = 1;
346 if (found)
347 return demuxer;
348 else
349 return NULL;
350 }
351
demux_avs_control(demuxer_t * demuxer,int cmd,void * arg)352 static int demux_avs_control(demuxer_t *demuxer, int cmd, void *arg)
353 {
354 sh_video_t *sh_video=demuxer->video->sh;
355 sh_audio_t *sh_audio=demuxer->audio->sh;
356 AVS_T *AVS = demuxer->priv;
357
358 switch(cmd)
359 {
360 case DEMUXER_CTRL_GET_TIME_LENGTH:
361 {
362 double res = sh_video ? (double)AVS->video_info->num_frames / sh_video->fps : 0;
363 if (sh_audio)
364 res = FFMAX(res, (double)AVS->video_info->num_audio_samples / sh_audio->samplerate);
365 *((double *)arg) = res;
366 return DEMUXER_CTRL_OK;
367 }
368 case DEMUXER_CTRL_GET_PERCENT_POS:
369 {
370 if (sh_video)
371 *((int *)arg) = AVS->frameno * 100 / AVS->video_info->num_frames;
372 else
373 *((int *)arg) = AVS->sampleno * 100 / AVS->video_info->num_audio_samples;
374 return DEMUXER_CTRL_OK;
375 }
376 default:
377 return DEMUXER_CTRL_NOTIMPL;
378 }
379 }
380
demux_close_avs(demuxer_t * demuxer)381 static void demux_close_avs(demuxer_t* demuxer)
382 {
383 AVS_T *AVS = demuxer->priv;
384
385 if (AVS)
386 {
387 if (AVS->dll)
388 {
389 if (AVS->clip)
390 AVS->avs_release_clip(AVS->clip);
391 mp_msg(MSGT_DEMUX, MSGL_V, "AVS: Unloading avisynth.dll\n");
392 FreeLibrary(AVS->dll);
393 }
394 #ifdef WIN32_LOADER
395 Restore_LDT_Keeper(AVS->ldt_fs);
396 #endif
397 free(AVS);
398 }
399 }
400
demux_seek_avs(demuxer_t * demuxer,float rel_seek_secs,float audio_delay,int flags)401 static void demux_seek_avs(demuxer_t *demuxer, float rel_seek_secs, float audio_delay, int flags)
402 {
403 sh_video_t *sh_video=demuxer->video->sh;
404 sh_audio_t *sh_audio=demuxer->audio->sh;
405 AVS_T *AVS = demuxer->priv;
406 double video_pos = sh_video ?
407 (double)AVS->frameno / sh_video->fps :
408 (double)AVS->sampleno / sh_audio->samplerate;
409 double duration = sh_video ?
410 (double)AVS->video_info->num_frames / sh_video->fps :
411 (double)AVS->video_info->num_audio_samples / sh_audio->samplerate;
412
413 //mp_msg(MSGT_DEMUX, MSGL_V, "AVS: seek rel_seek_secs = %f - flags = %x\n", rel_seek_secs, flags);
414
415 if (flags&SEEK_ABSOLUTE) video_pos=0;
416 if (flags&SEEK_FACTOR) rel_seek_secs *= duration;
417
418 video_pos += rel_seek_secs;
419 if (video_pos < 0) video_pos = 0;
420
421 if (sh_video) {
422 AVS->frameno = FFMIN(video_pos * sh_video->fps,
423 AVS->video_info->num_frames);
424 sh_video->num_frames_decoded = AVS->frameno;
425 sh_video->num_frames = AVS->frameno;
426 }
427 video_pos += audio_delay;
428 if (video_pos < 0) video_pos = 0;
429 if (sh_audio)
430 AVS->sampleno = FFMIN(video_pos * sh_audio->samplerate,
431 AVS->video_info->num_audio_samples);
432 }
433
avs_check_file(demuxer_t * demuxer)434 static int avs_check_file(demuxer_t *demuxer)
435 {
436 mp_msg(MSGT_DEMUX, MSGL_V, "AVS: avs_check_file - attempting to open file %s\n", demuxer->filename);
437
438 if (!demuxer->filename) return 0;
439
440 /* Avoid crazy memory eating when passing an mpg stream */
441 if (demuxer->movi_end > MAX_AVS_SIZE)
442 {
443 mp_msg(MSGT_DEMUX,MSGL_V, "AVS: File is too big, aborting...\n");
444 return 0;
445 }
446
447 demuxer->priv = initAVS(demuxer->filename);
448
449 if (demuxer->priv)
450 {
451 mp_msg(MSGT_DEMUX,MSGL_V, "AVS: Init Ok\n");
452 return DEMUXER_TYPE_AVS;
453 }
454 mp_msg(MSGT_DEMUX,MSGL_V, "AVS: Init failed\n");
455 return 0;
456 }
457
458
459 const demuxer_desc_t demuxer_desc_avs = {
460 "Avisynth demuxer",
461 "avs",
462 "AVS",
463 "Gianluigi Tiesi",
464 "Requires binary dll",
465 DEMUXER_TYPE_AVS,
466 0, // unsafe autodetect
467 avs_check_file,
468 demux_avs_fill_buffer,
469 demux_open_avs,
470 demux_close_avs,
471 demux_seek_avs,
472 demux_avs_control
473 };
474