examples/am7xxx-play.c

   1 /*
   2  * am7xxx-play - play stuff on an am7xxx device (e.g. Acer C110, PicoPix 1020)
   3  *
   4  * Copyright (C) 2012-2014  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
  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    = 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                         /*
 392                          * Rescaling the picture also changes its pixel format
 393                          * to the raw format supported by the projector if
 394                          * this was set in video_output_init()
 395                          */
 396                         sws_scale(sw_scale_ctx,
 397                                   (const uint8_t * const *)picture_raw->data,
 398                                   picture_raw->linesize,
 399                                   0,
 400                                   (input_ctx.codec_ctx)->height,
 401                                   picture_scaled->data,
 402                                   picture_scaled->linesize);
 403
 404                         if (output_ctx.raw_output) {
 405                                 out_picture = out_buf;
 406                                 out_picture_size = out_buf_size;
 407                         } else {
 408                                 picture_scaled->quality = (output_ctx.codec_ctx)->global_quality;
 409                                 av_init_packet(&out_packet);
 410                                 out_packet.data = NULL;
 411                                 out_packet.size = 0;
 412                                 got_packet = 0;
 413                                 ret = avcodec_encode_video2(output_ctx.codec_ctx,
 414                                                             &out_packet,
 415                                                             picture_scaled,
 416                                                             &got_packet);
 417                                 if (ret < 0 || !got_packet) {
 418                                         fprintf(stderr, "cannot encode video\n");
 419                                         run = 0;
 420                                         goto end_while;
 421                                 }
 422
 423                                 out_picture = out_packet.data;
 424                                 out_picture_size = out_packet.size;
 425                         }
 426
 427 #ifdef DEBUG
 428                         if (dump_frame) {
 429                                 char filename[NAME_MAX];
 430                                 FILE *file;
 431                                 if (!output_ctx.raw_output)
 432                                         snprintf(filename, NAME_MAX, "out_q%03d.jpg", quality);
 433                                 else
 434                                         snprintf(filename, NAME_MAX, "out.raw");
 435                                 file = fopen(filename, "wb");
 436                                 fwrite(out_picture, 1, out_picture_size, file);
 437                                 fclose(file);
 438                         }
 439 #else
 440                         (void) dump_frame;
 441 #endif
 442
 443                         ret = am7xxx_send_image_async(dev,
 444                                                       image_format,
 445                                                       (output_ctx.codec_ctx)->width,
 446                                                       (output_ctx.codec_ctx)->height,
 447                                                       out_picture,
 448                                                       out_picture_size);
 449                         if (ret < 0) {
 450                                 perror("am7xxx_send_image_async");
 451                                 run = 0;
 452                                 goto end_while;
 453                         }
 454                 }
 455 end_while:
 456                 if (!output_ctx.raw_output && got_packet)
 457                         av_free_packet(&out_packet);
 458                 av_free_packet(&in_packet);
 459         }
 460
 461         sws_freeContext(sw_scale_ctx);
 462 cleanup_out_buf:
 463         av_free(out_buf);
 464 cleanup_picture_scaled:
 465         av_frame_free(&picture_scaled);
 466 cleanup_picture_raw:
 467         av_frame_free(&picture_raw);
 468
 469 cleanup_output:
 470         /* av_free is needed as well,
 471          * see http://libav.org/doxygen/master/avcodec_8h.html#a5d7440cd7ea195bd0b14f21a00ef36dd
 472          */
 473         avcodec_close(output_ctx.codec_ctx);
 474         av_free(output_ctx.codec_ctx);
 475
 476 cleanup_input:
 477         avcodec_close(input_ctx.codec_ctx);
 478         avformat_close_input(&(input_ctx.format_ctx));
 479
 480 out:
 481         return ret;
 482 }
 483
 484 #ifdef HAVE_XCB
 485 #include <xcb/xcb.h>
 486 static int x_get_screen_dimensions(const char *displayname, int *width, int *height)
 487 {
 488         int i, screen_number;
 489         xcb_connection_t *connection;
 490         const xcb_setup_t *setup;
 491         xcb_screen_iterator_t iter;
 492
 493         connection = xcb_connect(displayname, &screen_number);
 494         if (xcb_connection_has_error(connection)) {
 495                 fprintf(stderr, "Cannot open a connection to %s\n", displayname);
 496                 return -EINVAL;
 497         }
 498
 499         setup = xcb_get_setup(connection);
 500         if (setup == NULL) {
 501                 fprintf(stderr, "Cannot get setup for %s\n", displayname);
 502                 xcb_disconnect(connection);
 503                 return -EINVAL;
 504         }
 505
 506         iter = xcb_setup_roots_iterator(setup);
 507         for (i = 0; i < screen_number; ++i) {
 508                 xcb_screen_next(&iter);
 509         }
 510
 511         xcb_screen_t *screen = iter.data;
 512
 513         *width = screen->width_in_pixels;
 514         *height = screen->height_in_pixels;
 515
 516         xcb_disconnect(connection);
 517
 518         return 0;
 519 }
 520
 521 static char *get_x_screen_size(const char *input_path)
 522 {
 523         int len;
 524         int width;
 525         int height;
 526         char *screen_size;
 527         int ret;
 528
 529         ret = x_get_screen_dimensions(input_path, &width, &height);
 530         if (ret < 0) {
 531                 fprintf(stderr, "Cannot get screen dimensions for %s\n", input_path);
 532                 return NULL;
 533         }
 534
 535         len = snprintf(NULL, 0, "%dx%d", width, height);
 536
 537         screen_size = malloc((len + 1) * sizeof(char));
 538         if (screen_size == NULL) {
 539                 perror("malloc");
 540                 return NULL;
 541         }
 542
 543         len = snprintf(screen_size, len + 1, "%dx%d", width, height);
 544         if (len < 0) {
 545                 free(screen_size);
 546                 screen_size = NULL;
 547                 return NULL;
 548         }
 549         return screen_size;
 550 }
 551 #else
 552 static char *get_x_screen_size(const char *input_path)
 553 {
 554         (void) input_path;
 555         fprintf(stderr, "%s: fallback implementation, assuming a vga screen\n", __func__);
 556         return strdup("vga");
 557 }
 558 #endif
 559
 560 static void unset_run(int signo)
 561 {
 562         (void) signo;
 563         run = 0;
 564 }
 565
 566 #ifdef HAVE_SIGACTION
 567 static int set_signal_handler(void (*signal_handler)(int))
 568 {
 569         struct sigaction new_action;
 570         struct sigaction old_action;
 571         int ret;
 572
 573         new_action.sa_handler = signal_handler;
 574         sigemptyset(&new_action.sa_mask);
 575         new_action.sa_flags = 0;
 576
 577         ret = sigaction(SIGINT, NULL, &old_action);
 578         if (ret < 0) {
 579                 perror("sigaction on old_action");
 580                 goto out;
 581         }
 582
 583         if (old_action.sa_handler != SIG_IGN) {
 584                 ret = sigaction(SIGINT, &new_action, NULL);
 585                 if (ret < 0) {
 586                         perror("sigaction on new_action");
 587                         goto out;
 588                 }
 589         }
 590
 591 out:
 592         return ret;
 593 }
 594 #else
 595 static int set_signal_handler(void (*signal_handler)(int))
 596 {
 597         (void)signal_handler;
 598         fprintf(stderr, "set_signal_handler() not implemented, sigaction not available\n");
 599         return 0;
 600 }
 601 #endif
 602
 603
 604 static void usage(char *name)
 605 {
 606         printf("usage: %s [OPTIONS]\n\n", name);
 607         printf("OPTIONS:\n");
 608         printf("\t-d <index>\t\tthe device index (default is 0)\n");
 609 #ifdef DEBUG
 610         printf("\t-D \t\t\tdump the last frame to a file (only active in DEBUG mode)\n");
 611 #endif
 612         printf("\t-f <input format>\tthe input device format\n");
 613         printf("\t-i <input path>\t\tthe input path\n");
 614         printf("\t-o <options>\t\ta comma separated list of input format options\n");
 615         printf("\t\t\t\tEXAMPLE:\n");
 616         printf("\t\t\t\t\t-o draw_mouse=1,framerate=100,video_size=800x480\n");
 617         printf("\t-s <scaling method>\tthe rescaling method (see swscale.h)\n");
 618         printf("\t-u \t\t\tupscale the image if smaller than the display dimensions\n");
 619         printf("\t-F <format>\t\tthe image format to use (default is JPEG)\n");
 620         printf("\t\t\t\tSUPPORTED FORMATS:\n");
 621         printf("\t\t\t\t\t1 - JPEG\n");
 622         printf("\t\t\t\t\t2 - NV12\n");
 623         printf("\t-q <quality>\t\tquality of jpeg sent to the device, between 1 and 100\n");
 624         printf("\t-l <log level>\t\tthe verbosity level of libam7xxx output (0-5)\n");
 625         printf("\t-p <power mode>\t\tthe power mode of device, between %d (off) and %d (turbo)\n",
 626                AM7XXX_POWER_OFF, AM7XXX_POWER_TURBO);
 627         printf("\t\t\t\tWARNING: Level 2 and greater require the master AND\n");
 628         printf("\t\t\t\t         the slave connector to be plugged in.\n");
 629         printf("\t-z <zoom mode>\t\tthe display zoom mode, between %d (original) and %d (tele)\n",
 630                AM7XXX_ZOOM_ORIGINAL, AM7XXX_ZOOM_TELE);
 631         printf("\t-h \t\t\tthis help message\n");
 632         printf("\n\nEXAMPLES OF USE:\n");
 633         printf("\t%s -f x11grab -i :0.0 -o video_size=800x480\n", name);
 634         printf("\t%s -f fbdev -i /dev/fb0\n", name);
 635         printf("\t%s -f video4linux2 -i /dev/video0 -o video_size=320x240,frame_rate=100 -u -q 90\n", name);
 636         printf("\t%s -i http://download.blender.org/peach/bigbuckbunny_movies/BigBuckBunny_640x360.m4v\n", name);
 637 }
 638
 639 int main(int argc, char *argv[])
 640 {
 641         int ret;
 642         int opt;
 643         char *subopts;
 644         char *subopts_saved;
 645         char *subopt;
 646         char *input_format_string = NULL;
 647         AVDictionary *options = NULL;
 648         char *input_path = NULL;
 649         unsigned int rescale_method = SWS_BICUBIC;
 650         unsigned int upscale = 0;
 651         unsigned int quality = 95;
 652         int log_level = AM7XXX_LOG_INFO;
 653         int device_index = 0;
 654         int power_mode = AM7XXX_POWER_LOW;
 655         int zoom = AM7XXX_ZOOM_ORIGINAL;
 656         int format = AM7XXX_IMAGE_FORMAT_JPEG;
 657         am7xxx_context *ctx;
 658         am7xxx_device *dev;
 659         int dump_frame = 0;
 660
 661         while ((opt = getopt(argc, argv, "d:Df:i:o:s:uF:q:l:p:z:h")) != -1) {
 662                 switch (opt) {
 663                 case 'd':
 664                         device_index = atoi(optarg);
 665                         if (device_index < 0) {
 666                                 fprintf(stderr, "Unsupported device index\n");
 667                                 ret = -EINVAL;
 668                                 goto out;
 669                         }
 670                         break;
 671                 case 'D':
 672                         dump_frame = 1;
 673 #ifndef DEBUG
 674                         fprintf(stderr, "Warning: the -D option is only active in DEBUG mode.\n");
 675 #endif
 676                         break;
 677                 case 'f':
 678                         input_format_string = strdup(optarg);
 679                         break;
 680                 case 'i':
 681                         input_path = strdup(optarg);
 682                         break;
 683                 case 'o':
 684 #ifdef HAVE_STRTOK_R
 685                         /*
 686                          * parse suboptions, the expected format is something
 687                          * like:
 688                          *   draw_mouse=1,framerate=100,video_size=800x480
 689                          */
 690                         subopts = subopts_saved = strdup(optarg);
 691                         while ((subopt = strtok_r(subopts, ",", &subopts))) {
 692                                 char *subopt_name = strtok_r(subopt, "=", &subopt);
 693                                 char *subopt_value = strtok_r(NULL, "", &subopt);
 694                                 if (subopt_value == NULL) {
 695                                         fprintf(stderr, "invalid suboption: %s\n", subopt_name);
 696                                         continue;
 697                                 }
 698                                 av_dict_set(&options, subopt_name, subopt_value, 0);
 699                         }
 700                         free(subopts_saved);
 701 #else
 702                         fprintf(stderr, "Option '-o' not implemented\n");
 703 #endif
 704                         break;
 705                 case 's':
 706                         rescale_method = atoi(optarg);
 707                         switch(rescale_method) {
 708                         case SWS_FAST_BILINEAR:
 709                         case SWS_BILINEAR:
 710                         case SWS_BICUBIC:
 711                         case SWS_X:
 712                         case SWS_POINT:
 713                         case SWS_AREA:
 714                         case SWS_BICUBLIN:
 715                         case SWS_GAUSS:
 716                         case SWS_SINC:
 717                         case SWS_LANCZOS:
 718                         case SWS_SPLINE:
 719                                 break;
 720                         default:
 721                                 fprintf(stderr, "Unsupported rescale method\n");
 722                                 ret = -EINVAL;
 723                                 goto out;
 724                         }
 725                         break;
 726                 case 'u':
 727                         upscale = 1;
 728                         break;
 729                 case 'F':
 730                         format = atoi(optarg);
 731                         switch(format) {
 732                         case AM7XXX_IMAGE_FORMAT_JPEG:
 733                                 fprintf(stdout, "JPEG format\n");
 734                                 break;
 735                         case AM7XXX_IMAGE_FORMAT_NV12:
 736                                 fprintf(stdout, "NV12 format\n");
 737                                 break;
 738                         default:
 739                                 fprintf(stderr, "Unsupported format\n");
 740                                 ret = -EINVAL;
 741                                 goto out;
 742                         }
 743                         break;
 744                 case 'q':
 745                         quality = atoi(optarg);
 746                         if (quality < 1 || quality > 100) {
 747                                 fprintf(stderr, "Invalid quality value, must be between 1 and 100\n");
 748                                 ret = -EINVAL;
 749                                 goto out;
 750                         }
 751                         break;
 752                 case 'l':
 753                         log_level = atoi(optarg);
 754                         if (log_level < AM7XXX_LOG_FATAL || log_level > AM7XXX_LOG_TRACE) {
 755                                 fprintf(stderr, "Unsupported log level, falling back to AM7XXX_LOG_ERROR\n");
 756                                 log_level = AM7XXX_LOG_ERROR;
 757                         }
 758                         break;
 759                 case 'p':
 760                         power_mode = atoi(optarg);
 761                         switch(power_mode) {
 762                         case AM7XXX_POWER_OFF:
 763                         case AM7XXX_POWER_LOW:
 764                         case AM7XXX_POWER_MIDDLE:
 765                         case AM7XXX_POWER_HIGH:
 766                         case AM7XXX_POWER_TURBO:
 767                                 fprintf(stdout, "Power mode: %d\n", power_mode);
 768                                 break;
 769                         default:
 770                                 fprintf(stderr, "Invalid power mode value, must be between %d and %d\n",
 771                                         AM7XXX_POWER_OFF, AM7XXX_POWER_TURBO);
 772                                 ret = -EINVAL;
 773                                 goto out;
 774                         }
 775                         break;
 776                 case 'z':
 777                         zoom = atoi(optarg);
 778                         switch(zoom) {
 779                         case AM7XXX_ZOOM_ORIGINAL:
 780                         case AM7XXX_ZOOM_H:
 781                         case AM7XXX_ZOOM_H_V:
 782                         case AM7XXX_ZOOM_TEST:
 783                         case AM7XXX_ZOOM_TELE:
 784                                 fprintf(stdout, "Zoom: %d\n", zoom);
 785                                 break;
 786                         default:
 787                                 fprintf(stderr, "Invalid zoom mode value, must be between %d and %d\n",
 788                                         AM7XXX_ZOOM_ORIGINAL, AM7XXX_ZOOM_TELE);
 789                                 ret = -EINVAL;
 790                                 goto out;
 791                         }
 792                         break;
 793                 case 'h':
 794                         usage(argv[0]);
 795                         ret = 0;
 796                         goto out;
 797                 default: /* '?' */
 798                         usage(argv[0]);
 799                         ret = -EINVAL;
 800                         goto out;
 801                 }
 802         }
 803
 804         if (input_path == NULL) {
 805                 fprintf(stderr, "The -i option must always be passed\n\n");
 806                 usage(argv[0]);
 807                 ret = -EINVAL;
 808                 goto out;
 809         }
 810
 811         /*
 812          * When the input format is 'x11grab' set some useful fallback options
 813          * if not supplied by the user, in particular grab full screen
 814          */
 815         if (input_format_string && strcmp(input_format_string, "x11grab") == 0) {
 816                 char *video_size;
 817
 818                 video_size = get_x_screen_size(input_path);
 819
 820                 if (!av_dict_get(options, "video_size", NULL, 0))
 821                         av_dict_set(&options, "video_size", video_size, 0);
 822
 823                 if (!av_dict_get(options, "framerate", NULL, 0))
 824                         av_dict_set(&options, "framerate", "60", 0);
 825
 826                 if (!av_dict_get(options, "draw_mouse", NULL, 0))
 827                         av_dict_set(&options, "draw_mouse",  "1", 0);
 828
 829                 free(video_size);
 830         }
 831
 832         ret = set_signal_handler(unset_run);
 833         if (ret < 0) {
 834                 perror("sigaction");
 835                 goto out;
 836         }
 837
 838         ret = am7xxx_init(&ctx);
 839         if (ret < 0) {
 840                 perror("am7xxx_init");
 841                 goto out;
 842         }
 843
 844         am7xxx_set_log_level(ctx, log_level);
 845
 846         ret = am7xxx_open_device(ctx, &dev, device_index);
 847         if (ret < 0) {
 848                 perror("am7xxx_open_device");
 849                 goto cleanup;
 850         }
 851
 852         ret = am7xxx_set_zoom_mode(dev, zoom);
 853         if (ret < 0) {
 854                 perror("am7xxx_set_zoom_mode");
 855                 goto cleanup;
 856         }
 857
 858         ret = am7xxx_set_power_mode(dev, power_mode);
 859         if (ret < 0) {
 860                 perror("am7xxx_set_power_mode");
 861                 goto cleanup;
 862         }
 863
 864         /* When setting AM7XXX_ZOOM_TEST don't display the actual image */
 865         if (zoom == AM7XXX_ZOOM_TEST)
 866                 goto cleanup;
 867
 868         ret = am7xxx_play(input_format_string,
 869                           &options,
 870                           input_path,
 871                           rescale_method,
 872                           upscale,
 873                           quality,
 874                           format,
 875                           dev,
 876                           dump_frame);
 877         if (ret < 0) {
 878                 fprintf(stderr, "am7xxx_play failed\n");
 879                 goto cleanup;
 880         }
 881
 882 cleanup:
 883         am7xxx_shutdown(ctx);
 884 out:
 885         av_dict_free(&options);
 886         free(input_path);
 887         free(input_format_string);
 888         return ret;
 889 }