libam7xxx  0.1
Communication library for Actions Micro AM7XXX based USB projectors and DPFs
am7xxx-play.c
1 /*
2  * am7xxx-play - play stuff on an am7xxx device (e.g. Acer C110, PicoPix 1020)
3  *
4  * Copyright (C) 2012-2014 Antonio Ospite <ao2@ao2.it>
5  *
6  * This program is free software: you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation, either version 3 of the License, or
9  * (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program. If not, see <http://www.gnu.org/licenses/>.
18  */
19 
26 #include <stdio.h>
27 #include <stdint.h>
28 #include <string.h>
29 #include <signal.h>
30 #include <getopt.h>
31 
32 #include <libavdevice/avdevice.h>
33 #include <libavformat/avformat.h>
34 #include <libswscale/swscale.h>
35 
36 #include <am7xxx.h>
37 
38 /* On some systems ENOTSUP is not defined, fallback to its value on
39  * linux which is equal to EOPNOTSUPP which is 95
40  */
41 #ifndef ENOTSUP
42 #define ENOTSUP 95
43 #endif
44 
45 static unsigned int run = 1;
46 
47 struct video_input_ctx {
48  AVFormatContext *format_ctx;
49  AVCodecContext *codec_ctx;
50  int video_stream_index;
51 };
52 
53 static int video_input_init(struct video_input_ctx *input_ctx,
54  const char *input_format_string,
55  const char *input_path,
56  AVDictionary **input_options)
57 {
58  AVInputFormat *input_format = NULL;
59  AVFormatContext *input_format_ctx;
60  AVCodecContext *input_codec_ctx;
61  AVCodec *input_codec;
62  int video_index;
63  unsigned int i;
64  int ret;
65 
66  avdevice_register_all();
67  avcodec_register_all();
68  av_register_all();
69 
70  if (input_format_string) {
71  /* find the desired input format */
72  input_format = av_find_input_format(input_format_string);
73  if (input_format == NULL) {
74  fprintf(stderr, "cannot find input format\n");
75  ret = -ENODEV;
76  goto out;
77  }
78  }
79 
80  if (input_path == NULL) {
81  fprintf(stderr, "input_path must not be NULL!\n");
82  ret = -EINVAL;
83  goto out;
84  }
85 
86  /* open the input format/device */
87  input_format_ctx = NULL;
88  ret = avformat_open_input(&input_format_ctx,
89  input_path,
90  input_format,
91  input_options);
92  if (ret < 0) {
93  fprintf(stderr, "cannot open input format/device\n");
94  goto out;
95  }
96 
97  /* get information on the input stream (e.g. format, bitrate, framerate) */
98  ret = avformat_find_stream_info(input_format_ctx, NULL);
99  if (ret < 0) {
100  fprintf(stderr, "cannot get information on the stream\n");
101  goto cleanup;
102  }
103 
104  /* dump what was found */
105  av_dump_format(input_format_ctx, 0, input_path, 0);
106 
107  /* look for the first video_stream */
108  video_index = -1;
109  for (i = 0; i < input_format_ctx->nb_streams; i++)
110  if (input_format_ctx->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
111  video_index = i;
112  break;
113  }
114  if (video_index == -1) {
115  fprintf(stderr, "cannot find any video streams\n");
116  ret = -ENOTSUP;
117  goto cleanup;
118  }
119 
120  /* get a pointer to the codec context for the video stream */
121  input_codec_ctx = input_format_ctx->streams[video_index]->codec;
122  if (input_codec_ctx == NULL) {
123  fprintf(stderr, "input codec context is not valid\n");
124  ret = -ENOTSUP;
125  goto cleanup;
126  }
127 
128  /* find the decoder for the video stream */
129  input_codec = avcodec_find_decoder(input_codec_ctx->codec_id);
130  if (input_codec == NULL) {
131  fprintf(stderr, "input_codec is NULL!\n");
132  ret = -ENOTSUP;
133  goto cleanup;
134  }
135 
136  /* open the decoder */
137  ret = avcodec_open2(input_codec_ctx, input_codec, NULL);
138  if (ret < 0) {
139  fprintf(stderr, "cannot open input codec\n");
140  ret = -ENOTSUP;
141  goto cleanup;
142  }
143 
144  input_ctx->format_ctx = input_format_ctx;
145  input_ctx->codec_ctx = input_codec_ctx;
146  input_ctx->video_stream_index = video_index;
147 
148  ret = 0;
149  goto out;
150 
151 cleanup:
152  avformat_close_input(&input_format_ctx);
153 out:
154  av_dict_free(input_options);
155  *input_options = NULL;
156  return ret;
157 }
158 
159 
160 struct video_output_ctx {
161  AVCodecContext *codec_ctx;
162  int raw_output;
163 };
164 
165 static int video_output_init(struct video_output_ctx *output_ctx,
166  struct video_input_ctx *input_ctx,
167  unsigned int upscale,
168  unsigned int quality,
169  am7xxx_image_format image_format,
170  am7xxx_device *dev)
171 {
172  AVCodecContext *output_codec_ctx;
173  AVCodec *output_codec;
174  unsigned int new_output_width;
175  unsigned int new_output_height;
176  int ret;
177 
178  if (input_ctx == NULL) {
179  fprintf(stderr, "input_ctx must not be NULL!\n");
180  ret = -EINVAL;
181  goto out;
182  }
183 
184  /* create the encoder context */
185  output_codec_ctx = avcodec_alloc_context3(NULL);
186  if (output_codec_ctx == NULL) {
187  fprintf(stderr, "cannot allocate output codec context!\n");
188  ret = -ENOMEM;
189  goto out;
190  }
191 
192  /* Calculate the new output dimension so the original picture is shown
193  * in its entirety */
195  upscale,
196  (input_ctx->codec_ctx)->width,
197  (input_ctx->codec_ctx)->height,
198  &new_output_width,
199  &new_output_height);
200  if (ret < 0) {
201  fprintf(stderr, "cannot calculate output dimension\n");
202  goto cleanup;
203  }
204 
205  /* put sample parameters */
206  output_codec_ctx->bit_rate = (input_ctx->codec_ctx)->bit_rate;
207  output_codec_ctx->width = new_output_width;
208  output_codec_ctx->height = new_output_height;
209  output_codec_ctx->time_base.num =
210  (input_ctx->format_ctx)->streams[input_ctx->video_stream_index]->time_base.num;
211  output_codec_ctx->time_base.den =
212  (input_ctx->format_ctx)->streams[input_ctx->video_stream_index]->time_base.den;
213 
214  /* When the raw format is requested we don't actually need to setup
215  * and open a decoder
216  */
217  if (image_format == AM7XXX_IMAGE_FORMAT_NV12) {
218  fprintf(stdout, "using raw output format\n");
219  output_codec_ctx->pix_fmt = AV_PIX_FMT_NV12;
220  output_ctx->codec_ctx = output_codec_ctx;
221  output_ctx->raw_output = 1;
222  ret = 0;
223  goto out;
224  }
225 
226  output_codec_ctx->pix_fmt = AV_PIX_FMT_YUVJ420P;
227  output_codec_ctx->codec_id = AV_CODEC_ID_MJPEG;
228  output_codec_ctx->codec_type = AVMEDIA_TYPE_VIDEO;
229 
230  /* Set quality and other VBR settings */
231 
232  /* @note: 'quality' is expected to be between 1 and 100, but a value
233  * between 0 to 99 has to be passed when calculating qmin and qmax.
234  * This way qmin and qmax will cover the range 1-FF_QUALITY_SCALE, and
235  * in particular they won't be 0, this is needed because they are used
236  * as divisor somewhere in the encoding process */
237  output_codec_ctx->qmin = output_codec_ctx->qmax = ((100 - (quality - 1)) * FF_QUALITY_SCALE) / 100;
238  output_codec_ctx->mb_lmin = output_codec_ctx->qmin * FF_QP2LAMBDA;
239  output_codec_ctx->mb_lmax = output_codec_ctx->qmax * FF_QP2LAMBDA;
240  output_codec_ctx->flags |= CODEC_FLAG_QSCALE;
241  output_codec_ctx->global_quality = output_codec_ctx->qmin * FF_QP2LAMBDA;
242 
243  /* find the encoder */
244  output_codec = avcodec_find_encoder(output_codec_ctx->codec_id);
245  if (output_codec == NULL) {
246  fprintf(stderr, "cannot find output codec!\n");
247  ret = -ENOTSUP;
248  goto cleanup;
249  }
250 
251  /* open the codec */
252  ret = avcodec_open2(output_codec_ctx, output_codec, NULL);
253  if (ret < 0) {
254  fprintf(stderr, "could not open output codec!\n");
255  goto cleanup;
256  }
257 
258  output_ctx->codec_ctx = output_codec_ctx;
259  output_ctx->raw_output = 0;
260 
261  ret = 0;
262  goto out;
263 
264 cleanup:
265  avcodec_close(output_codec_ctx);
266  av_free(output_codec_ctx);
267 out:
268  return ret;
269 }
270 
271 
272 static int am7xxx_play(const char *input_format_string,
273  AVDictionary **input_options,
274  const char *input_path,
275  unsigned int rescale_method,
276  unsigned int upscale,
277  unsigned int quality,
278  am7xxx_image_format image_format,
279  am7xxx_device *dev,
280  int dump_frame)
281 {
282  struct video_input_ctx input_ctx;
283  struct video_output_ctx output_ctx;
284  AVFrame *picture_raw;
285  AVFrame *picture_scaled;
286  int out_buf_size;
287  uint8_t *out_buf;
288  int out_picture_size;
289  uint8_t *out_picture;
290  struct SwsContext *sw_scale_ctx;
291  AVPacket in_packet;
292  AVPacket out_packet;
293  int got_picture;
294  int got_packet;
295  int ret;
296 
297  ret = video_input_init(&input_ctx, input_format_string, input_path, input_options);
298  if (ret < 0) {
299  fprintf(stderr, "cannot initialize input\n");
300  goto out;
301  }
302 
303  ret = video_output_init(&output_ctx, &input_ctx, upscale, quality, image_format, dev);
304  if (ret < 0) {
305  fprintf(stderr, "cannot initialize input\n");
306  goto cleanup_input;
307  }
308 
309  /* allocate an input frame */
310  picture_raw = av_frame_alloc();
311  if (picture_raw == NULL) {
312  fprintf(stderr, "cannot allocate the raw picture frame!\n");
313  ret = -ENOMEM;
314  goto cleanup_output;
315  }
316 
317  /* allocate output frame */
318  picture_scaled = av_frame_alloc();
319  if (picture_scaled == NULL) {
320  fprintf(stderr, "cannot allocate the scaled picture!\n");
321  ret = -ENOMEM;
322  goto cleanup_picture_raw;
323  }
324  picture_scaled->format = (output_ctx.codec_ctx)->pix_fmt;
325  picture_scaled->width = (output_ctx.codec_ctx)->width;
326  picture_scaled->height = (output_ctx.codec_ctx)->height;
327 
328  /* calculate the bytes needed for the output image and create buffer for the output image */
329  out_buf_size = avpicture_get_size((output_ctx.codec_ctx)->pix_fmt,
330  (output_ctx.codec_ctx)->width,
331  (output_ctx.codec_ctx)->height);
332  out_buf = av_malloc(out_buf_size * sizeof(uint8_t));
333  if (out_buf == NULL) {
334  fprintf(stderr, "cannot allocate output data buffer!\n");
335  ret = -ENOMEM;
336  goto cleanup_picture_scaled;
337  }
338 
339  /* assign appropriate parts of buffer to image planes in picture_scaled */
340  avpicture_fill((AVPicture *)picture_scaled,
341  out_buf,
342  (output_ctx.codec_ctx)->pix_fmt,
343  (output_ctx.codec_ctx)->width,
344  (output_ctx.codec_ctx)->height);
345 
346  sw_scale_ctx = sws_getCachedContext(NULL,
347  (input_ctx.codec_ctx)->width,
348  (input_ctx.codec_ctx)->height,
349  (input_ctx.codec_ctx)->pix_fmt,
350  (output_ctx.codec_ctx)->width,
351  (output_ctx.codec_ctx)->height,
352  (output_ctx.codec_ctx)->pix_fmt,
353  rescale_method,
354  NULL, NULL, NULL);
355  if (sw_scale_ctx == NULL) {
356  fprintf(stderr, "cannot set up the rescaling context!\n");
357  ret = -EINVAL;
358  goto cleanup_out_buf;
359  }
360 
361  got_packet = 0;
362  while (run) {
363  /* read packet */
364  ret = av_read_frame(input_ctx.format_ctx, &in_packet);
365  if (ret < 0) {
366  if (ret == (int)AVERROR_EOF || input_ctx.format_ctx->pb->eof_reached)
367  ret = 0;
368  else
369  fprintf(stderr, "av_read_frame failed, EOF?\n");
370  run = 0;
371  goto end_while;
372  }
373 
374  if (in_packet.stream_index != input_ctx.video_stream_index) {
375  /* that is more or less a "continue", but there is
376  * still the packet to free */
377  goto end_while;
378  }
379 
380  /* decode */
381  got_picture = 0;
382  ret = avcodec_decode_video2(input_ctx.codec_ctx, picture_raw, &got_picture, &in_packet);
383  if (ret < 0) {
384  fprintf(stderr, "cannot decode video\n");
385  run = 0;
386  goto end_while;
387  }
388 
389  /* if we got the complete frame */
390  if (got_picture) {
391  /* convert it to YUV */
392  sws_scale(sw_scale_ctx,
393  (const uint8_t * const *)picture_raw->data,
394  picture_raw->linesize,
395  0,
396  (input_ctx.codec_ctx)->height,
397  picture_scaled->data,
398  picture_scaled->linesize);
399 
400  if (output_ctx.raw_output) {
401  out_picture = out_buf;
402  out_picture_size = out_buf_size;
403  } else {
404  picture_scaled->quality = (output_ctx.codec_ctx)->global_quality;
405  av_init_packet(&out_packet);
406  out_packet.data = NULL;
407  out_packet.size = 0;
408  got_packet = 0;
409  ret = avcodec_encode_video2(output_ctx.codec_ctx,
410  &out_packet,
411  picture_scaled,
412  &got_packet);
413  if (ret < 0 || !got_packet) {
414  fprintf(stderr, "cannot encode video\n");
415  run = 0;
416  goto end_while;
417  }
418 
419  out_picture = out_packet.data;
420  out_picture_size = out_packet.size;
421  }
422 
423 #ifdef DEBUG
424  if (dump_frame) {
425  char filename[NAME_MAX];
426  FILE *file;
427  if (!output_ctx.raw_output)
428  snprintf(filename, NAME_MAX, "out_q%03d.jpg", quality);
429  else
430  snprintf(filename, NAME_MAX, "out.raw");
431  file = fopen(filename, "wb");
432  fwrite(out_picture, 1, out_picture_size, file);
433  fclose(file);
434  }
435 #else
436  (void) dump_frame;
437 #endif
438 
439  ret = am7xxx_send_image_async(dev,
440  image_format,
441  (output_ctx.codec_ctx)->width,
442  (output_ctx.codec_ctx)->height,
443  out_picture,
444  out_picture_size);
445  if (ret < 0) {
446  perror("am7xxx_send_image_async");
447  run = 0;
448  goto end_while;
449  }
450  }
451 end_while:
452  if (!output_ctx.raw_output && got_packet)
453  av_free_packet(&out_packet);
454  av_free_packet(&in_packet);
455  }
456 
457  sws_freeContext(sw_scale_ctx);
458 cleanup_out_buf:
459  av_free(out_buf);
460 cleanup_picture_scaled:
461  av_frame_free(&picture_scaled);
462 cleanup_picture_raw:
463  av_frame_free(&picture_raw);
464 
465 cleanup_output:
466  /* av_free is needed as well,
467  * see http://libav.org/doxygen/master/avcodec_8h.html#a5d7440cd7ea195bd0b14f21a00ef36dd
468  */
469  avcodec_close(output_ctx.codec_ctx);
470  av_free(output_ctx.codec_ctx);
471 
472 cleanup_input:
473  avcodec_close(input_ctx.codec_ctx);
474  avformat_close_input(&(input_ctx.format_ctx));
475 
476 out:
477  return ret;
478 }
479 
480 #ifdef HAVE_XCB
481 #include <xcb/xcb.h>
482 static int x_get_screen_dimensions(const char *displayname, int *width, int *height)
483 {
484  int i, screen_number;
485  xcb_connection_t *connection;
486  const xcb_setup_t *setup;
487  xcb_screen_iterator_t iter;
488 
489  connection = xcb_connect(displayname, &screen_number);
490  if (xcb_connection_has_error(connection)) {
491  fprintf(stderr, "Cannot open a connection to %s\n", displayname);
492  return -EINVAL;
493  }
494 
495  setup = xcb_get_setup(connection);
496  if (setup == NULL) {
497  fprintf(stderr, "Cannot get setup for %s\n", displayname);
498  xcb_disconnect(connection);
499  return -EINVAL;
500  }
501 
502  iter = xcb_setup_roots_iterator(setup);
503  for (i = 0; i < screen_number; ++i) {
504  xcb_screen_next(&iter);
505  }
506 
507  xcb_screen_t *screen = iter.data;
508 
509  *width = screen->width_in_pixels;
510  *height = screen->height_in_pixels;
511 
512  xcb_disconnect(connection);
513 
514  return 0;
515 }
516 
517 static char *get_x_screen_size(const char *input_path)
518 {
519  int len;
520  int width;
521  int height;
522  char *screen_size;
523  int ret;
524 
525  ret = x_get_screen_dimensions(input_path, &width, &height);
526  if (ret < 0) {
527  fprintf(stderr, "Cannot get screen dimensions for %s\n", input_path);
528  return NULL;
529  }
530 
531  len = snprintf(NULL, 0, "%dx%d", width, height);
532 
533  screen_size = malloc((len + 1) * sizeof(char));
534  if (screen_size == NULL) {
535  perror("malloc");
536  return NULL;
537  }
538 
539  len = snprintf(screen_size, len + 1, "%dx%d", width, height);
540  if (len < 0) {
541  free(screen_size);
542  screen_size = NULL;
543  return NULL;
544  }
545  return screen_size;
546 }
547 #else
548 static char *get_x_screen_size(const char *input_path)
549 {
550  (void) input_path;
551  fprintf(stderr, "%s: fallback implementation\n", __func__);
552  return strdup("vga");
553 }
554 #endif
555 
556 static void unset_run(int signo)
557 {
558  (void) signo;
559  run = 0;
560 }
561 
562 #ifdef HAVE_SIGACTION
563 static int set_signal_handler(void (*signal_handler)(int))
564 {
565  struct sigaction new_action;
566  struct sigaction old_action;
567  int ret;
568 
569  new_action.sa_handler = signal_handler;
570  sigemptyset(&new_action.sa_mask);
571  new_action.sa_flags = 0;
572 
573  ret = sigaction(SIGINT, NULL, &old_action);
574  if (ret < 0) {
575  perror("sigaction on old_action");
576  goto out;
577  }
578 
579  if (old_action.sa_handler != SIG_IGN) {
580  ret = sigaction(SIGINT, &new_action, NULL);
581  if (ret < 0) {
582  perror("sigaction on new_action");
583  goto out;
584  }
585  }
586 
587 out:
588  return ret;
589 }
590 #else
591 static int set_signal_handler(void (*signal_handler)(int))
592 {
593  (void)signal_handler;
594  fprintf(stderr, "set_signal_handler() not implemented, sigaction not available\n");
595  return 0;
596 }
597 #endif
598 
599 
600 static void usage(char *name)
601 {
602  printf("usage: %s [OPTIONS]\n\n", name);
603  printf("OPTIONS:\n");
604  printf("\t-d <index>\t\tthe device index (default is 0)\n");
605 #ifdef DEBUG
606  printf("\t-D \t\t\tdump the last frame to a file (only active in DEBUG mode)\n");
607 #endif
608  printf("\t-f <input format>\tthe input device format\n");
609  printf("\t-i <input path>\t\tthe input path\n");
610  printf("\t-o <options>\t\ta comma separated list of input format options\n");
611  printf("\t\t\t\tEXAMPLE:\n");
612  printf("\t\t\t\t\t-o draw_mouse=1,framerate=100,video_size=800x480\n");
613  printf("\t-s <scaling method>\tthe rescaling method (see swscale.h)\n");
614  printf("\t-u \t\t\tupscale the image if smaller than the display dimensions\n");
615  printf("\t-F <format>\t\tthe image format to use (default is JPEG)\n");
616  printf("\t\t\t\tSUPPORTED FORMATS:\n");
617  printf("\t\t\t\t\t1 - JPEG\n");
618  printf("\t\t\t\t\t2 - NV12\n");
619  printf("\t-q <quality>\t\tquality of jpeg sent to the device, between 1 and 100\n");
620  printf("\t-l <log level>\t\tthe verbosity level of libam7xxx output (0-5)\n");
621  printf("\t-p <power mode>\t\tthe power mode of device, between %d (off) and %d (turbo)\n",
623  printf("\t\t\t\tWARNING: Level 2 and greater require the master AND\n");
624  printf("\t\t\t\t the slave connector to be plugged in.\n");
625  printf("\t-z <zoom mode>\t\tthe display zoom mode, between %d (original) and %d (tele)\n",
627  printf("\t-h \t\t\tthis help message\n");
628  printf("\n\nEXAMPLES OF USE:\n");
629  printf("\t%s -f x11grab -i :0.0 -o video_size=800x480\n", name);
630  printf("\t%s -f fbdev -i /dev/fb0\n", name);
631  printf("\t%s -f video4linux2 -i /dev/video0 -o video_size=320x240,frame_rate=100 -u -q 90\n", name);
632  printf("\t%s -i http://download.blender.org/peach/bigbuckbunny_movies/BigBuckBunny_640x360.m4v\n", name);
633 }
634 
635 int main(int argc, char *argv[])
636 {
637  int ret;
638  int opt;
639  char *subopts;
640  char *subopts_saved;
641  char *subopt;
642  char *input_format_string = NULL;
643  AVDictionary *options = NULL;
644  char *input_path = NULL;
645  unsigned int rescale_method = SWS_BICUBIC;
646  unsigned int upscale = 0;
647  unsigned int quality = 95;
648  int log_level = AM7XXX_LOG_INFO;
649  int device_index = 0;
650  int power_mode = AM7XXX_POWER_LOW;
651  int zoom = AM7XXX_ZOOM_ORIGINAL;
652  int format = AM7XXX_IMAGE_FORMAT_JPEG;
653  am7xxx_context *ctx;
654  am7xxx_device *dev;
655  int dump_frame = 0;
656 
657  while ((opt = getopt(argc, argv, "d:Df:i:o:s:uF:q:l:p:z:h")) != -1) {
658  switch (opt) {
659  case 'd':
660  device_index = atoi(optarg);
661  if (device_index < 0) {
662  fprintf(stderr, "Unsupported device index\n");
663  ret = -EINVAL;
664  goto out;
665  }
666  break;
667  case 'D':
668  dump_frame = 1;
669 #ifndef DEBUG
670  fprintf(stderr, "Warning: the -D option is only active in DEBUG mode.\n");
671 #endif
672  break;
673  case 'f':
674  input_format_string = strdup(optarg);
675  break;
676  case 'i':
677  input_path = strdup(optarg);
678  break;
679  case 'o':
680 #ifdef HAVE_STRTOK_R
681  /*
682  * parse suboptions, the expected format is something
683  * like:
684  * draw_mouse=1,framerate=100,video_size=800x480
685  */
686  subopts = subopts_saved = strdup(optarg);
687  while ((subopt = strtok_r(subopts, ",", &subopts))) {
688  char *subopt_name = strtok_r(subopt, "=", &subopt);
689  char *subopt_value = strtok_r(NULL, "", &subopt);
690  if (subopt_value == NULL) {
691  fprintf(stderr, "invalid suboption: %s\n", subopt_name);
692  continue;
693  }
694  av_dict_set(&options, subopt_name, subopt_value, 0);
695  }
696  free(subopts_saved);
697 #else
698  fprintf(stderr, "Option '-o' not implemented\n");
699 #endif
700  break;
701  case 's':
702  rescale_method = atoi(optarg);
703  switch(rescale_method) {
704  case SWS_FAST_BILINEAR:
705  case SWS_BILINEAR:
706  case SWS_BICUBIC:
707  case SWS_X:
708  case SWS_POINT:
709  case SWS_AREA:
710  case SWS_BICUBLIN:
711  case SWS_GAUSS:
712  case SWS_SINC:
713  case SWS_LANCZOS:
714  case SWS_SPLINE:
715  break;
716  default:
717  fprintf(stderr, "Unsupported rescale method\n");
718  ret = -EINVAL;
719  goto out;
720  }
721  break;
722  case 'u':
723  upscale = 1;
724  break;
725  case 'F':
726  format = atoi(optarg);
727  switch(format) {
729  fprintf(stdout, "JPEG format\n");
730  break;
732  fprintf(stdout, "NV12 format\n");
733  break;
734  default:
735  fprintf(stderr, "Unsupported format\n");
736  ret = -EINVAL;
737  goto out;
738  }
739  break;
740  case 'q':
741  quality = atoi(optarg);
742  if (quality < 1 || quality > 100) {
743  fprintf(stderr, "Invalid quality value, must be between 1 and 100\n");
744  ret = -EINVAL;
745  goto out;
746  }
747  break;
748  case 'l':
749  log_level = atoi(optarg);
750  if (log_level < AM7XXX_LOG_FATAL || log_level > AM7XXX_LOG_TRACE) {
751  fprintf(stderr, "Unsupported log level, falling back to AM7XXX_LOG_ERROR\n");
752  log_level = AM7XXX_LOG_ERROR;
753  }
754  break;
755  case 'p':
756  power_mode = atoi(optarg);
757  switch(power_mode) {
758  case AM7XXX_POWER_OFF:
759  case AM7XXX_POWER_LOW:
760  case AM7XXX_POWER_MIDDLE:
761  case AM7XXX_POWER_HIGH:
762  case AM7XXX_POWER_TURBO:
763  fprintf(stdout, "Power mode: %d\n", power_mode);
764  break;
765  default:
766  fprintf(stderr, "Invalid power mode value, must be between %d and %d\n",
768  ret = -EINVAL;
769  goto out;
770  }
771  break;
772  case 'z':
773  zoom = atoi(optarg);
774  switch(zoom) {
776  case AM7XXX_ZOOM_H:
777  case AM7XXX_ZOOM_H_V:
778  case AM7XXX_ZOOM_TEST:
779  case AM7XXX_ZOOM_TELE:
780  fprintf(stdout, "Zoom: %d\n", zoom);
781  break;
782  default:
783  fprintf(stderr, "Invalid zoom mode value, must be between %d and %d\n",
785  ret = -EINVAL;
786  goto out;
787  }
788  break;
789  case 'h':
790  usage(argv[0]);
791  ret = 0;
792  goto out;
793  default: /* '?' */
794  usage(argv[0]);
795  ret = -EINVAL;
796  goto out;
797  }
798  }
799 
800  if (input_path == NULL) {
801  fprintf(stderr, "The -i option must always be passed\n\n");
802  usage(argv[0]);
803  ret = -EINVAL;
804  goto out;
805  }
806 
807  /*
808  * When the input format is 'x11grab' set some useful fallback options
809  * if not supplied by the user, in particular grab full screen
810  */
811  if (input_format_string && strcmp(input_format_string, "x11grab") == 0) {
812  char *video_size;
813 
814  video_size = get_x_screen_size(input_path);
815 
816  if (!av_dict_get(options, "video_size", NULL, 0))
817  av_dict_set(&options, "video_size", video_size, 0);
818 
819  if (!av_dict_get(options, "framerate", NULL, 0))
820  av_dict_set(&options, "framerate", "60", 0);
821 
822  if (!av_dict_get(options, "draw_mouse", NULL, 0))
823  av_dict_set(&options, "draw_mouse", "1", 0);
824 
825  free(video_size);
826  }
827 
828  ret = set_signal_handler(unset_run);
829  if (ret < 0) {
830  perror("sigaction");
831  goto out;
832  }
833 
834  ret = am7xxx_init(&ctx);
835  if (ret < 0) {
836  perror("am7xxx_init");
837  goto out;
838  }
839 
840  am7xxx_set_log_level(ctx, log_level);
841 
842  ret = am7xxx_open_device(ctx, &dev, device_index);
843  if (ret < 0) {
844  perror("am7xxx_open_device");
845  goto cleanup;
846  }
847 
848  ret = am7xxx_set_zoom_mode(dev, zoom);
849  if (ret < 0) {
850  perror("am7xxx_set_zoom_mode");
851  goto cleanup;
852  }
853 
854  ret = am7xxx_set_power_mode(dev, power_mode);
855  if (ret < 0) {
856  perror("am7xxx_set_power_mode");
857  goto cleanup;
858  }
859 
860  /* When setting AM7XXX_ZOOM_TEST don't display the actual image */
861  if (zoom == AM7XXX_ZOOM_TEST)
862  goto cleanup;
863 
864  ret = am7xxx_play(input_format_string,
865  &options,
866  input_path,
867  rescale_method,
868  upscale,
869  quality,
870  format,
871  dev,
872  dump_frame);
873  if (ret < 0) {
874  fprintf(stderr, "am7xxx_play failed\n");
875  goto cleanup;
876  }
877 
878 cleanup:
879  am7xxx_shutdown(ctx);
880 out:
881  av_dict_free(&options);
882  free(input_path);
883  free(input_format_string);
884  return ret;
885 }
Zoom test screen, the firmware version is shown as well.
Definition: am7xxx.h:126
Zoom 1: H Scale (changes aspect ratio).
Definition: am7xxx.h:124
struct _am7xxx_context am7xxx_context
An opaque data type representing a context.
Definition: am7xxx.h:38
JPEG format.
Definition: am7xxx.h:81
Zoom Tele: available on some PicoPix models.
Definition: am7xxx.h:127
int am7xxx_init(am7xxx_context **ctx)
Initialize the library context and data structures, and scan for devices.
Definition: am7xxx.c:1089
Original Size, as retrieved via am7xxx_device_info.
Definition: am7xxx.h:123
Max brightness and power consumption.
Definition: am7xxx.h:104
Middle level of brightness.
Definition: am7xxx.h:102
am7xxx_image_format
The image formats accepted by the device.
Definition: am7xxx.h:80
Public libam7xxx API.
int am7xxx_open_device(am7xxx_context *ctx, am7xxx_device **dev, unsigned int device_index)
Open an am7xxx_device according to a index.
Definition: am7xxx.c:1158
Zoom 2: H/V Scale (changes aspect ratio).
Definition: am7xxx.h:125
More brightness, but more power consumption.
Definition: am7xxx.h:103
Error messages, typically they describe API functions failures.
Definition: am7xxx.h:70
int am7xxx_set_power_mode(am7xxx_device *dev, am7xxx_power_mode power)
Set the power mode of an am7xxx device.
Definition: am7xxx.c:1391
void am7xxx_set_log_level(am7xxx_context *ctx, am7xxx_log_level log_level)
Set verbosity level of log messages.
Definition: am7xxx.c:1153
int am7xxx_calc_scaled_image_dimensions(am7xxx_device *dev, unsigned int upscale, unsigned int original_width, unsigned int original_height, unsigned int *scaled_width, unsigned int *scaled_height)
Calculate the dimensions of an image to be shown on an am7xxx device.
Definition: am7xxx.c:1257
int am7xxx_send_image_async(am7xxx_device *dev, am7xxx_image_format format, unsigned int width, unsigned int height, unsigned char *image, unsigned int image_size)
Queue transfer of an image for display on an am7xxx device and return immediately.
Informations about the device operations.
Definition: am7xxx.h:72
int am7xxx_set_zoom_mode(am7xxx_device *dev, am7xxx_zoom_mode zoom)
Set the zoom mode of an am7xxx device.
Definition: am7xxx.c:1402
Raw YUV in the NV12 variant.
Definition: am7xxx.h:82
Verbose informations about the communication with the hardware.
Definition: am7xxx.h:74
Low power consumption but also low brightness.
Definition: am7xxx.h:101
void am7xxx_shutdown(am7xxx_context *ctx)
Cleanup the library data structures and free the context.
Definition: am7xxx.c:1130
struct _am7xxx_device am7xxx_device
An opaque data type representing an am7xxx device.
Definition: am7xxx.h:46
Display is powered off, no image shown.
Definition: am7xxx.h:100