6d5d3c7f5cf1250187735713904e8d04c90ab79e
[libam7xxx.git] / examples / am7xxx-play.c
1 /*
2  * am7xxx-play - play stuff on an am7xxx device (e.g. Acer C110, PicoPix 1020)
3  *
4  * Copyright (C) 2012  Antonio Ospite <ospite@studenti.unina.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
20 /**
21  * @example examples/am7xxx-play.c
22  * am7xxx-play uses libavdevice, libavformat, libavcodec and libswscale to
23  * decode the input, encode it to jpeg and display it with libam7xxx.
24  */
25
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 */
194         ret = am7xxx_calc_scaled_image_dimensions(dev,
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    = 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    = PIX_FMT_YUVJ420P;
227         output_codec_ctx->codec_id   = 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->lmin = output_codec_ctx->qmin * FF_QP2LAMBDA;
239         output_codec_ctx->mb_lmax    = output_codec_ctx->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 {
281         struct video_input_ctx input_ctx;
282         struct video_output_ctx output_ctx;
283         AVFrame *picture_raw;
284         AVFrame *picture_scaled;
285         int out_buf_size;
286         uint8_t *out_buf;
287         int out_picture_size;
288         struct SwsContext *sw_scale_ctx;
289         AVPacket packet;
290         int got_picture;
291         int ret = 0;
292
293         ret = video_input_init(&input_ctx, input_format_string, input_path, input_options);
294         if (ret < 0) {
295                 fprintf(stderr, "cannot initialize input\n");
296                 goto out;
297         }
298
299         ret = video_output_init(&output_ctx, &input_ctx, upscale, quality, image_format, dev);
300         if (ret < 0) {
301                 fprintf(stderr, "cannot initialize input\n");
302                 goto cleanup_input;
303         }
304
305         /* allocate an input frame */
306         picture_raw = avcodec_alloc_frame();
307         if (picture_raw == NULL) {
308                 fprintf(stderr, "cannot allocate the raw picture frame!\n");
309                 ret = -ENOMEM;
310                 goto cleanup_output;
311         }
312
313         /* allocate output frame */
314         picture_scaled = avcodec_alloc_frame();
315         if (picture_scaled == NULL) {
316                 fprintf(stderr, "cannot allocate the scaled picture!\n");
317                 ret = -ENOMEM;
318                 goto cleanup_picture_raw;
319         }
320
321         /* calculate the bytes needed for the output image and create buffer for the output image */
322         out_buf_size = avpicture_get_size((output_ctx.codec_ctx)->pix_fmt,
323                                           (output_ctx.codec_ctx)->width,
324                                           (output_ctx.codec_ctx)->height);
325         out_buf = av_malloc(out_buf_size * sizeof(uint8_t));
326         if (out_buf == NULL) {
327                 fprintf(stderr, "cannot allocate output data buffer!\n");
328                 ret = -ENOMEM;
329                 goto cleanup_picture_scaled;
330         }
331
332         /* assign appropriate parts of buffer to image planes in picture_scaled */
333         avpicture_fill((AVPicture *)picture_scaled,
334                        out_buf,
335                        (output_ctx.codec_ctx)->pix_fmt,
336                        (output_ctx.codec_ctx)->width,
337                        (output_ctx.codec_ctx)->height);
338
339         sw_scale_ctx = sws_getCachedContext(NULL,
340                                             (input_ctx.codec_ctx)->width,
341                                             (input_ctx.codec_ctx)->height,
342                                             (input_ctx.codec_ctx)->pix_fmt,
343                                             (output_ctx.codec_ctx)->width,
344                                             (output_ctx.codec_ctx)->height,
345                                             (output_ctx.codec_ctx)->pix_fmt,
346                                             rescale_method,
347                                             NULL, NULL, NULL);
348         if (sw_scale_ctx == NULL) {
349                 fprintf(stderr, "cannot set up the rescaling context!\n");
350                 ret = -EINVAL;
351                 goto cleanup_out_buf;
352         }
353
354         while (run) {
355                 /* read packet */
356                 ret = av_read_frame(input_ctx.format_ctx, &packet);
357                 if (ret < 0) {
358                         if (ret == (int)AVERROR_EOF || input_ctx.format_ctx->pb->eof_reached)
359                                 ret = 0;
360                         else
361                                 fprintf(stderr, "av_read_frame failed, EOF?\n");
362                         run = 0;
363                         goto end_while;
364                 }
365
366                 if (packet.stream_index != input_ctx.video_stream_index) {
367                         /* that is more or less a "continue", but there is
368                          * still the packet to free */
369                         goto end_while;
370                 }
371
372                 /* decode */
373                 got_picture = 0;
374                 ret = avcodec_decode_video2(input_ctx.codec_ctx, picture_raw, &got_picture, &packet);
375                 if (ret < 0) {
376                         fprintf(stderr, "cannot decode video\n");
377                         run = 0;
378                         goto end_while;
379                 }
380
381                 /* if we get the complete frame */
382                 if (got_picture) {
383                         /* convert it to YUV */
384                         sws_scale(sw_scale_ctx,
385                                   (const uint8_t * const*)picture_raw->data,
386                                   picture_raw->linesize,
387                                   0,
388                                   (input_ctx.codec_ctx)->height,
389                                   picture_scaled->data,
390                                   picture_scaled->linesize);
391
392                         if (output_ctx.raw_output) {
393                                 out_picture_size = out_buf_size;
394                         } else {
395                                 picture_scaled->quality = (output_ctx.codec_ctx)->global_quality;
396                                 /* TODO: switch to avcodec_encode_video2() eventually */
397                                 out_picture_size = avcodec_encode_video(output_ctx.codec_ctx,
398                                                                         out_buf,
399                                                                         out_buf_size,
400                                                                         picture_scaled);
401                                 if (out_picture_size < 0) {
402                                         fprintf(stderr, "cannot encode video\n");
403                                         ret = out_picture_size;
404                                         run = 0;
405                                         goto end_while;
406                                 }
407                         }
408
409 #ifdef DEBUG
410                         char filename[NAME_MAX];
411                         FILE *file;
412                         if (!output_ctx.raw_output)
413                                 snprintf(filename, NAME_MAX, "out_q%03d.jpg", quality);
414                         else
415                                 snprintf(filename, NAME_MAX, "out.raw");
416                         file = fopen(filename, "wb");
417                         fwrite(out_buf, 1, out_picture_size, file);
418                         fclose(file);
419 #endif
420
421                         ret = am7xxx_send_image(dev,
422                                                 image_format,
423                                                 (output_ctx.codec_ctx)->width,
424                                                 (output_ctx.codec_ctx)->height,
425                                                 out_buf,
426                                                 out_picture_size);
427                         if (ret < 0) {
428                                 perror("am7xxx_send_image");
429                                 run = 0;
430                                 goto end_while;
431                         }
432                 }
433 end_while:
434                 av_free_packet(&packet);
435         }
436
437         sws_freeContext(sw_scale_ctx);
438 cleanup_out_buf:
439         av_free(out_buf);
440 cleanup_picture_scaled:
441         av_free(picture_scaled);
442 cleanup_picture_raw:
443         av_free(picture_raw);
444
445 cleanup_output:
446         /* av_free is needed as well,
447          * see http://libav.org/doxygen/master/avcodec_8h.html#a5d7440cd7ea195bd0b14f21a00ef36dd
448          */
449         avcodec_close(output_ctx.codec_ctx);
450         av_free(output_ctx.codec_ctx);
451
452 cleanup_input:
453         avcodec_close(input_ctx.codec_ctx);
454         avformat_close_input(&(input_ctx.format_ctx));
455
456 out:
457         return ret;
458 }
459
460 #ifdef HAVE_XCB
461 #include <xcb/xcb.h>
462 static int x_get_screen_dimensions(const char *displayname, int *width, int *height)
463 {
464         int i, screen_number;
465         xcb_connection_t *connection;
466         const xcb_setup_t *setup;
467         xcb_screen_iterator_t iter;
468
469         connection = xcb_connect(displayname, &screen_number);
470         if (xcb_connection_has_error(connection)) {
471                 fprintf(stderr, "Cannot open a connection to %s\n", displayname);
472                 return -EINVAL;
473         }
474
475         setup = xcb_get_setup(connection);
476         if (setup == NULL) {
477                 fprintf(stderr, "Cannot get setup for %s\n", displayname);
478                 xcb_disconnect(connection);
479                 return -EINVAL;
480         }
481
482         iter = xcb_setup_roots_iterator(setup);
483         for (i = 0; i < screen_number; ++i) {
484                 xcb_screen_next(&iter);
485         }
486
487         xcb_screen_t *screen = iter.data;
488
489         *width = screen->width_in_pixels;
490         *height = screen->height_in_pixels;
491
492         xcb_disconnect(connection);
493
494         return 0;
495 }
496
497 static char *get_x_screen_size(const char *input_path)
498 {
499         int len;
500         int width;
501         int height;
502         char *screen_size;
503         int ret;
504
505         ret = x_get_screen_dimensions(input_path, &width, &height);
506         if (ret < 0) {
507                 fprintf(stderr, "Cannot get screen dimensions for %s\n", input_path);
508                 return NULL;
509         }
510
511         len = snprintf(NULL, 0, "%dx%d", width, height);
512
513         screen_size = malloc((len + 1) * sizeof(char));
514         if (screen_size == NULL) {
515                 perror("malloc");
516                 return NULL;
517         }
518
519         len = snprintf(screen_size, len + 1, "%dx%d", width, height);
520         if (len < 0) {
521                 free(screen_size);
522                 screen_size = NULL;
523                 return NULL;
524         }
525         return screen_size;
526 }
527 #else
528 static char *get_x_screen_size(const char *input_path)
529 {
530         (void) input_path;
531         fprintf(stderr, "%s: fallback implementation\n", __func__);
532         return strdup("vga");
533 }
534 #endif
535
536 static void unset_run(int signo)
537 {
538         (void) signo;
539         run = 0;
540 }
541
542 #ifdef HAVE_SIGACTION
543 static int set_signal_handler(void (*signal_handler)(int))
544 {
545         struct sigaction new_action;
546         struct sigaction old_action;
547         int ret = 0;
548
549         new_action.sa_handler = signal_handler;
550         sigemptyset(&new_action.sa_mask);
551         new_action.sa_flags = 0;
552
553         ret = sigaction(SIGINT, NULL, &old_action);
554         if (ret < 0) {
555                 perror("sigaction on old_action");
556                 goto out;
557         }
558
559         if (old_action.sa_handler != SIG_IGN) {
560                 ret = sigaction(SIGINT, &new_action, NULL);
561                 if (ret < 0) {
562                         perror("sigaction on new_action");
563                         goto out;
564                 }
565         }
566
567 out:
568         return ret;
569 }
570 #else
571 static int set_signal_handler(void (*signal_handler)(int))
572 {
573         (void)signal_handler;
574         fprintf(stderr, "set_signal_handler() not implemented, sigaction not available\n");
575         return 0;
576 }
577 #endif
578
579
580 static void usage(char *name)
581 {
582         printf("usage: %s [OPTIONS]\n\n", name);
583         printf("OPTIONS:\n");
584         printf("\t-f <input format>\tthe input device format\n");
585         printf("\t-i <input path>\t\tthe input path\n");
586         printf("\t-o <options>\t\ta comma separated list of input format options\n");
587         printf("\t\t\t\tEXAMPLE:\n");
588         printf("\t\t\t\t\t-o draw_mouse=1,framerate=100,video_size=800x480\n");
589         printf("\t-s <scaling method>\tthe rescaling method (see swscale.h)\n");
590         printf("\t-u \t\t\tupscale the image if smaller than the display dimensions\n");
591         printf("\t-F <format>\t\tthe image format to use (default is JPEG)\n");
592         printf("\t\t\t\tSUPPORTED FORMATS:\n");
593         printf("\t\t\t\t\t1 - JPEG\n");
594         printf("\t\t\t\t\t2 - NV12\n");
595         printf("\t-q <quality>\t\tquality of jpeg sent to the device, between 1 and 100\n");
596         printf("\t-l <log level>\t\tthe verbosity level of libam7xxx output (0-5)\n");
597         printf("\t-p <power mode>\t\tthe power mode of device, between %d (off) and %d (turbo)\n",
598                AM7XXX_POWER_OFF, AM7XXX_POWER_TURBO);
599         printf("\t\t\t\tWARNING: Level 2 and greater require the master AND\n");
600         printf("\t\t\t\t         the slave connector to be plugged in.\n");
601         printf("\t-z <zoom mode>\t\tthe display zoom mode, between %d (original) and %d (test)\n",
602                AM7XXX_ZOOM_ORIGINAL, AM7XXX_ZOOM_TEST);
603         printf("\t-h \t\t\tthis help message\n");
604         printf("\n\nEXAMPLES OF USE:\n");
605         printf("\t%s -f x11grab -i :0.0 -o video_size=800x480\n", name);
606         printf("\t%s -f fbdev -i /dev/fb0\n", name);
607         printf("\t%s -f video4linux2 -i /dev/video0 -o video_size=320x240,frame_rate=100 -u -q 90\n", name);
608         printf("\t%s -i http://download.blender.org/peach/bigbuckbunny_movies/BigBuckBunny_640x360.m4v\n", name);
609 }
610
611 int main(int argc, char *argv[])
612 {
613         int ret;
614         int opt;
615         char *subopts;
616         char *subopts_saved;
617         char *subopt;
618         char *input_format_string = NULL;
619         AVDictionary *options = NULL;
620         char *input_path = NULL;
621         unsigned int rescale_method = SWS_BICUBIC;
622         unsigned int upscale = 0;
623         unsigned int quality = 95;
624         int log_level = AM7XXX_LOG_INFO;
625         am7xxx_power_mode power_mode = AM7XXX_POWER_LOW;
626         am7xxx_zoom_mode zoom = AM7XXX_ZOOM_ORIGINAL;
627         int format = AM7XXX_IMAGE_FORMAT_JPEG;
628         am7xxx_context *ctx;
629         am7xxx_device *dev;
630
631         while ((opt = getopt(argc, argv, "f:i:o:s:uF:q:l:p:z:h")) != -1) {
632                 switch (opt) {
633                 case 'f':
634                         input_format_string = strdup(optarg);
635                         break;
636                 case 'i':
637                         input_path = strdup(optarg);
638                         break;
639                 case 'o':
640 #ifdef HAVE_STRTOK_R
641                         /*
642                          * parse suboptions, the expected format is something
643                          * like:
644                          *   draw_mouse=1,framerate=100,video_size=800x480
645                          */
646                         subopts = subopts_saved = strdup(optarg);
647                         while((subopt = strtok_r(subopts, ",", &subopts))) {
648                                 char *subopt_name = strtok_r(subopt, "=", &subopt);
649                                 char *subopt_value = strtok_r(NULL, "", &subopt);
650                                 if (subopt_value == NULL) {
651                                         fprintf(stderr, "invalid suboption: %s\n", subopt_name);
652                                         continue;
653                                 }
654                                 av_dict_set(&options, subopt_name, subopt_value, 0);
655                         }
656                         free(subopts_saved);
657 #else
658                         fprintf(stderr, "Option '-o' not implemented\n");
659 #endif
660                         break;
661                 case 's':
662                         rescale_method = atoi(optarg);
663                         switch(rescale_method) {
664                         case SWS_FAST_BILINEAR:
665                         case SWS_BILINEAR:
666                         case SWS_BICUBIC:
667                         case SWS_X:
668                         case SWS_POINT:
669                         case SWS_AREA:
670                         case SWS_BICUBLIN:
671                         case SWS_GAUSS:
672                         case SWS_SINC:
673                         case SWS_LANCZOS:
674                         case SWS_SPLINE:
675                                 break;
676                         default:
677                                 fprintf(stderr, "Unsupported rescale method\n");
678                                 ret = -EINVAL;
679                                 goto out;
680                         }
681                         break;
682                 case 'u':
683                         upscale = 1;
684                         break;
685                 case 'F':
686                         format = atoi(optarg);
687                         switch(format) {
688                         case AM7XXX_IMAGE_FORMAT_JPEG:
689                                 fprintf(stdout, "JPEG format\n");
690                                 break;
691                         case AM7XXX_IMAGE_FORMAT_NV12:
692                                 fprintf(stdout, "NV12 format\n");
693                                 break;
694                         default:
695                                 fprintf(stderr, "Unsupported format\n");
696                                 ret = -EINVAL;
697                                 goto out;
698                         }
699                         break;
700                 case 'q':
701                         quality = atoi(optarg);
702                         if (quality < 1 || quality > 100) {
703                                 fprintf(stderr, "Invalid quality value, must be between 1 and 100\n");
704                                 ret = -EINVAL;
705                                 goto out;
706                         }
707                         break;
708                 case 'l':
709                         log_level = atoi(optarg);
710                         if (log_level < AM7XXX_LOG_FATAL || log_level > AM7XXX_LOG_TRACE) {
711                                 fprintf(stderr, "Unsupported log level, falling back to AM7XXX_LOG_ERROR\n");
712                                 log_level = AM7XXX_LOG_ERROR;
713                         }
714                         break;
715                 case 'p':
716                         power_mode = atoi(optarg);
717                         switch(power_mode) {
718                         case AM7XXX_POWER_OFF:
719                         case AM7XXX_POWER_LOW:
720                         case AM7XXX_POWER_MIDDLE:
721                         case AM7XXX_POWER_HIGH:
722                         case AM7XXX_POWER_TURBO:
723                                 fprintf(stdout, "Power mode: %d\n", power_mode);
724                                 break;
725                         default:
726                                 fprintf(stderr, "Invalid power mode value, must be between %d and %d\n",
727                                         AM7XXX_POWER_OFF, AM7XXX_POWER_TURBO);
728                                 ret = -EINVAL;
729                                 goto out;
730                         }
731                         break;
732                 case 'z':
733                         zoom = atoi(optarg);
734                         switch(zoom) {
735                         case AM7XXX_ZOOM_ORIGINAL:
736                         case AM7XXX_ZOOM_H:
737                         case AM7XXX_ZOOM_H_V:
738                         case AM7XXX_ZOOM_TEST:
739                                 fprintf(stdout, "Zoom: %d\n", zoom);
740                                 break;
741                         default:
742                                 fprintf(stderr, "Invalid zoom mode value, must be between %d and %d\n",
743                                         AM7XXX_ZOOM_ORIGINAL, AM7XXX_ZOOM_TEST);
744                                 exit(EXIT_FAILURE);
745                         }
746                         break;
747                 case 'h':
748                         usage(argv[0]);
749                         ret = 0;
750                         goto out;
751                         break;
752                 default: /* '?' */
753                         usage(argv[0]);
754                         ret = -EINVAL;
755                         goto out;
756                 }
757         }
758
759         if (input_path == NULL) {
760                 fprintf(stderr, "The -i option must always be passed\n");
761                 ret = -EINVAL;
762                 goto out;
763         }
764
765         /*
766          * When the input format is 'x11grab' set some useful fallback options
767          * if not supplied by the user, in particular grab full screen
768          */
769         if (input_format_string && strcmp(input_format_string, "x11grab") == 0) {
770                 char *video_size;
771
772                 video_size = get_x_screen_size(input_path);
773
774                 if (!av_dict_get(options, "video_size", NULL, 0))
775                         av_dict_set(&options, "video_size", video_size, 0);
776
777                 if (!av_dict_get(options, "framerate", NULL, 0))
778                         av_dict_set(&options, "framerate", "60", 0);
779
780                 if (!av_dict_get(options, "draw_mouse", NULL, 0))
781                         av_dict_set(&options, "draw_mouse",  "1", 0);
782
783                 free(video_size);
784         }
785
786         ret = set_signal_handler(unset_run);
787         if (ret < 0) {
788                 perror("sigaction");
789                 goto out;
790         }
791
792         ret = am7xxx_init(&ctx);
793         if (ret < 0) {
794                 perror("am7xxx_init");
795                 goto out;
796         }
797
798         am7xxx_set_log_level(ctx, log_level);
799
800         ret = am7xxx_open_device(ctx, &dev, 0);
801         if (ret < 0) {
802                 perror("am7xxx_open_device");
803                 goto cleanup;
804         }
805
806         ret = am7xxx_set_zoom_mode(dev, zoom);
807         if (ret < 0) {
808                 perror("am7xxx_set_zoom_mode");
809                 goto cleanup;
810         }
811
812         ret = am7xxx_set_power_mode(dev, power_mode);
813         if (ret < 0) {
814                 perror("am7xxx_set_power_mode");
815                 goto cleanup;
816         }
817
818         /* When setting AM7XXX_ZOOM_TEST don't display the actual image */
819         if (zoom == AM7XXX_ZOOM_TEST)
820                 goto cleanup;
821
822         ret = am7xxx_play(input_format_string,
823                           &options,
824                           input_path,
825                           rescale_method,
826                           upscale,
827                           quality,
828                           format,
829                           dev);
830         if (ret < 0) {
831                 fprintf(stderr, "am7xxx_play failed\n");
832                 goto cleanup;
833         }
834
835 cleanup:
836         am7xxx_shutdown(ctx);
837 out:
838         av_dict_free(&options);
839         free(input_path);
840         free(input_format_string);
841         return ret;
842 }