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 <libavutil/imgutils.h>
  35 #include <libswscale/swscale.h>
  36
  37 #include <am7xxx.h>
  38
  39 static unsigned int run = 1;
  40
  41 struct video_input_ctx {
  42         AVFormatContext *format_ctx;
  43         AVCodecContext  *codec_ctx;
  44         int video_stream_index;
  45 };
  46
  47 static int video_input_init(struct video_input_ctx *input_ctx,
  48                             const char *input_format_string,
  49                             const char *input_path,
  50                             AVDictionary **input_options)
  51 {
  52         AVInputFormat *input_format = NULL;
  53         AVFormatContext *input_format_ctx;
  54         AVCodecContext *input_codec_ctx;
  55         AVCodec *input_codec;
  56         int video_index;
  57         unsigned int i;
  58         int ret;
  59
  60         avdevice_register_all();
  61         avcodec_register_all();
  62         av_register_all();
  63
  64         if (input_format_string) {
  65                 /* find the desired input format */
  66                 input_format = av_find_input_format(input_format_string);
  67                 if (input_format == NULL) {
  68                         fprintf(stderr, "cannot find input format\n");
  69                         ret = -ENODEV;
  70                         goto out;
  71                 }
  72         }
  73
  74         if (input_path == NULL) {
  75                 fprintf(stderr, "input_path must not be NULL!\n");
  76                 ret = -EINVAL;
  77                 goto out;
  78         }
  79
  80         /* open the input format/device */
  81         input_format_ctx = NULL;
  82         ret = avformat_open_input(&input_format_ctx,
  83                                   input_path,
  84                                   input_format,
  85                                   input_options);
  86         if (ret < 0) {
  87                 fprintf(stderr, "cannot open input format/device\n");
  88                 goto out;
  89         }
  90
  91         /* get information on the input stream (e.g. format, bitrate, framerate) */
  92         ret = avformat_find_stream_info(input_format_ctx, NULL);
  93         if (ret < 0) {
  94                 fprintf(stderr, "cannot get information on the stream\n");
  95                 goto cleanup;
  96         }
  97
  98         /* dump what was found */
  99         av_dump_format(input_format_ctx, 0, input_path, 0);
 100
 101         /* look for the first video_stream */
 102         video_index = -1;
 103         for (i = 0; i < input_format_ctx->nb_streams; i++)
 104                 if (input_format_ctx->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
 105                         video_index = i;
 106                         break;
 107                 }
 108         if (video_index == -1) {
 109                 fprintf(stderr, "cannot find any video streams\n");
 110                 ret = -EINVAL;
 111                 goto cleanup;
 112         }
 113
 114         /* get a pointer to the codec context for the video stream */
 115         input_codec_ctx = input_format_ctx->streams[video_index]->codec;
 116         if (input_codec_ctx == NULL) {
 117                 fprintf(stderr, "input codec context is not valid\n");
 118                 ret = -EINVAL;
 119                 goto cleanup;
 120         }
 121
 122         /* find the decoder for the video stream */
 123         input_codec = avcodec_find_decoder(input_codec_ctx->codec_id);
 124         if (input_codec == NULL) {
 125                 fprintf(stderr, "input_codec is NULL!\n");
 126                 ret = -EINVAL;
 127                 goto cleanup;
 128         }
 129
 130         /* open the decoder */
 131         ret = avcodec_open2(input_codec_ctx, input_codec, NULL);
 132         if (ret < 0) {
 133                 fprintf(stderr, "cannot open input codec\n");
 134                 ret = -EINVAL;
 135                 goto cleanup;
 136         }
 137
 138         input_ctx->format_ctx = input_format_ctx;
 139         input_ctx->codec_ctx = input_codec_ctx;
 140         input_ctx->video_stream_index = video_index;
 141
 142         ret = 0;
 143         goto out;
 144
 145 cleanup:
 146         avformat_close_input(&input_format_ctx);
 147 out:
 148         av_dict_free(input_options);
 149         *input_options = NULL;
 150         return ret;
 151 }
 152
 153
 154 struct video_output_ctx {
 155         AVCodecContext  *codec_ctx;
 156         int raw_output;
 157 };
 158
 159 static int video_output_init(struct video_output_ctx *output_ctx,
 160                              struct video_input_ctx *input_ctx,
 161                              unsigned int upscale,
 162                              unsigned int quality,
 163                              am7xxx_image_format image_format,
 164                              am7xxx_device *dev)
 165 {
 166         AVCodecContext *output_codec_ctx;
 167         AVCodec *output_codec;
 168         unsigned int new_output_width;
 169         unsigned int new_output_height;
 170         int ret;
 171
 172         if (input_ctx == NULL) {
 173                 fprintf(stderr, "input_ctx must not be NULL!\n");
 174                 ret = -EINVAL;
 175                 goto out;
 176         }
 177
 178         /* create the encoder context */
 179         output_codec_ctx = avcodec_alloc_context3(NULL);
 180         if (output_codec_ctx == NULL) {
 181                 fprintf(stderr, "cannot allocate output codec context!\n");
 182                 ret = -ENOMEM;
 183                 goto out;
 184         }
 185
 186         /* Calculate the new output dimension so the original picture is shown
 187          * in its entirety */
 188         ret = am7xxx_calc_scaled_image_dimensions(dev,
 189                                                   upscale,
 190                                                   (input_ctx->codec_ctx)->width,
 191                                                   (input_ctx->codec_ctx)->height,
 192                                                   &new_output_width,
 193                                                   &new_output_height);
 194         if (ret < 0) {
 195                 fprintf(stderr, "cannot calculate output dimension\n");
 196                 goto cleanup;
 197         }
 198
 199         /* put sample parameters */
 200         output_codec_ctx->bit_rate   = (input_ctx->codec_ctx)->bit_rate;
 201         output_codec_ctx->width      = new_output_width;
 202         output_codec_ctx->height     = new_output_height;
 203         output_codec_ctx->time_base.num  =
 204                 (input_ctx->format_ctx)->streams[input_ctx->video_stream_index]->time_base.num;
 205         output_codec_ctx->time_base.den  =
 206                 (input_ctx->format_ctx)->streams[input_ctx->video_stream_index]->time_base.den;
 207
 208         /* When the raw format is requested we don't actually need to setup
 209          * and open a decoder
 210          */
 211         if (image_format == AM7XXX_IMAGE_FORMAT_NV12) {
 212                 fprintf(stdout, "using raw output format\n");
 213                 output_codec_ctx->pix_fmt    = AV_PIX_FMT_NV12;
 214                 output_ctx->codec_ctx = output_codec_ctx;
 215                 output_ctx->raw_output = 1;
 216                 ret = 0;
 217                 goto out;
 218         }
 219
 220         output_codec_ctx->pix_fmt    = AV_PIX_FMT_YUVJ420P;
 221         output_codec_ctx->codec_id   = AV_CODEC_ID_MJPEG;
 222         output_codec_ctx->codec_type = AVMEDIA_TYPE_VIDEO;
 223
 224         /* Set quality and other VBR settings */
 225
 226         /* @note: 'quality' is expected to be between 1 and 100, but a value
 227          * between 0 to 99 has to be passed when calculating qmin and qmax.
 228          * This way qmin and qmax will cover the range 1-FF_QUALITY_SCALE, and
 229          * in particular they won't be 0, this is needed because they are used
 230          * as divisor somewhere in the encoding process */
 231         output_codec_ctx->qmin       = output_codec_ctx->qmax = ((100 - (quality - 1)) * FF_QUALITY_SCALE) / 100;
 232         output_codec_ctx->mb_lmin    = output_codec_ctx->qmin * FF_QP2LAMBDA;
 233         output_codec_ctx->mb_lmax    = output_codec_ctx->qmax * FF_QP2LAMBDA;
 234         output_codec_ctx->flags      |= AV_CODEC_FLAG_QSCALE;
 235         output_codec_ctx->global_quality = output_codec_ctx->qmin * FF_QP2LAMBDA;
 236
 237         /* find the encoder */
 238         output_codec = avcodec_find_encoder(output_codec_ctx->codec_id);
 239         if (output_codec == NULL) {
 240                 fprintf(stderr, "cannot find output codec!\n");
 241                 ret = -EINVAL;
 242                 goto cleanup;
 243         }
 244
 245         /* open the codec */
 246         ret = avcodec_open2(output_codec_ctx, output_codec, NULL);
 247         if (ret < 0) {
 248                 fprintf(stderr, "could not open output codec!\n");
 249                 goto cleanup;
 250         }
 251
 252         output_ctx->codec_ctx = output_codec_ctx;
 253         output_ctx->raw_output = 0;
 254
 255         ret = 0;
 256         goto out;
 257
 258 cleanup:
 259         avcodec_close(output_codec_ctx);
 260         av_free(output_codec_ctx);
 261 out:
 262         return ret;
 263 }
 264
 265
 266 static int am7xxx_play(const char *input_format_string,
 267                        AVDictionary **input_options,
 268                        const char *input_path,
 269                        unsigned int rescale_method,
 270                        unsigned int upscale,
 271                        unsigned int quality,
 272                        am7xxx_image_format image_format,
 273                        am7xxx_device *dev,
 274                        int dump_frame)
 275 {
 276         struct video_input_ctx input_ctx;
 277         struct video_output_ctx output_ctx;
 278         AVFrame *picture_raw;
 279         AVFrame *picture_scaled;
 280         int out_buf_size;
 281         uint8_t *out_buf;
 282         int out_picture_size;
 283         uint8_t *out_picture;
 284         struct SwsContext *sw_scale_ctx;
 285         AVPacket in_packet;
 286         AVPacket out_packet;
 287         int got_picture;
 288         int got_packet;
 289         int ret;
 290
 291         ret = video_input_init(&input_ctx, input_format_string, input_path, input_options);
 292         if (ret < 0) {
 293                 fprintf(stderr, "cannot initialize input\n");
 294                 goto out;
 295         }
 296
 297         ret = video_output_init(&output_ctx, &input_ctx, upscale, quality, image_format, dev);
 298         if (ret < 0) {
 299                 fprintf(stderr, "cannot initialize input\n");
 300                 goto cleanup_input;
 301         }
 302
 303         /* allocate an input frame */
 304         picture_raw = av_frame_alloc();
 305         if (picture_raw == NULL) {
 306                 fprintf(stderr, "cannot allocate the raw picture frame!\n");
 307                 ret = -ENOMEM;
 308                 goto cleanup_output;
 309         }
 310
 311         /* allocate output frame */
 312         picture_scaled = av_frame_alloc();
 313         if (picture_scaled == NULL) {
 314                 fprintf(stderr, "cannot allocate the scaled picture!\n");
 315                 ret = -ENOMEM;
 316                 goto cleanup_picture_raw;
 317         }
 318         picture_scaled->format = (output_ctx.codec_ctx)->pix_fmt;
 319         picture_scaled->width = (output_ctx.codec_ctx)->width;
 320         picture_scaled->height = (output_ctx.codec_ctx)->height;
 321
 322         /* calculate the bytes needed for the output image and create buffer for the output image */
 323         out_buf_size = av_image_get_buffer_size((output_ctx.codec_ctx)->pix_fmt,
 324                                                 (output_ctx.codec_ctx)->width,
 325                                                 (output_ctx.codec_ctx)->height,
 326                                                 1);
 327         out_buf = av_malloc(out_buf_size * sizeof(uint8_t));
 328         if (out_buf == NULL) {
 329                 fprintf(stderr, "cannot allocate output data buffer!\n");
 330                 ret = -ENOMEM;
 331                 goto cleanup_picture_scaled;
 332         }
 333
 334         /* assign appropriate parts of buffer to image planes in picture_scaled */
 335         av_image_fill_arrays(picture_scaled->data,
 336                              picture_scaled->linesize,
 337                              out_buf,
 338                              (output_ctx.codec_ctx)->pix_fmt,
 339                              (output_ctx.codec_ctx)->width,
 340                              (output_ctx.codec_ctx)->height,
 341                              1);
 342
 343         sw_scale_ctx = sws_getCachedContext(NULL,
 344                                             (input_ctx.codec_ctx)->width,
 345                                             (input_ctx.codec_ctx)->height,
 346                                             (input_ctx.codec_ctx)->pix_fmt,
 347                                             (output_ctx.codec_ctx)->width,
 348                                             (output_ctx.codec_ctx)->height,
 349                                             (output_ctx.codec_ctx)->pix_fmt,
 350                                             rescale_method,
 351                                             NULL, NULL, NULL);
 352         if (sw_scale_ctx == NULL) {
 353                 fprintf(stderr, "cannot set up the rescaling context!\n");
 354                 ret = -EINVAL;
 355                 goto cleanup_out_buf;
 356         }
 357
 358         got_packet = 0;
 359         while (run) {
 360                 /* read packet */
 361                 ret = av_read_frame(input_ctx.format_ctx, &in_packet);
 362                 if (ret < 0) {
 363                         if (ret == (int)AVERROR_EOF || input_ctx.format_ctx->pb->eof_reached)
 364                                 ret = 0;
 365                         else
 366                                 fprintf(stderr, "av_read_frame failed, EOF?\n");
 367                         run = 0;
 368                         goto end_while;
 369                 }
 370
 371                 if (in_packet.stream_index != input_ctx.video_stream_index) {
 372                         /* that is more or less a "continue", but there is
 373                          * still the packet to free */
 374                         goto end_while;
 375                 }
 376
 377                 /* decode */
 378                 got_picture = 0;
 379                 ret = avcodec_decode_video2(input_ctx.codec_ctx, picture_raw, &got_picture, &in_packet);
 380                 if (ret < 0) {
 381                         fprintf(stderr, "cannot decode video\n");
 382                         run = 0;
 383                         goto end_while;
 384                 }
 385
 386                 /* if we got the complete frame */
 387                 if (got_picture) {
 388                         /*
 389                          * Rescaling the picture also changes its pixel format
 390                          * to the raw format supported by the projector if
 391                          * this was set in video_output_init()
 392                          */
 393                         sws_scale(sw_scale_ctx,
 394                                   (const uint8_t * const *)picture_raw->data,
 395                                   picture_raw->linesize,
 396                                   0,
 397                                   (input_ctx.codec_ctx)->height,
 398                                   picture_scaled->data,
 399                                   picture_scaled->linesize);
 400
 401                         if (output_ctx.raw_output) {
 402                                 out_picture = out_buf;
 403                                 out_picture_size = out_buf_size;
 404                         } else {
 405                                 picture_scaled->quality = (output_ctx.codec_ctx)->global_quality;
 406                                 av_init_packet(&out_packet);
 407                                 out_packet.data = NULL;
 408                                 out_packet.size = 0;
 409                                 got_packet = 0;
 410                                 ret = avcodec_encode_video2(output_ctx.codec_ctx,
 411                                                             &out_packet,
 412                                                             picture_scaled,
 413                                                             &got_packet);
 414                                 if (ret < 0 || !got_packet) {
 415                                         fprintf(stderr, "cannot encode video\n");
 416                                         run = 0;
 417                                         goto end_while;
 418                                 }
 419
 420                                 out_picture = out_packet.data;
 421                                 out_picture_size = out_packet.size;
 422                         }
 423
 424 #ifdef DEBUG
 425                         if (dump_frame) {
 426                                 char filename[NAME_MAX];
 427                                 FILE *file;
 428                                 if (!output_ctx.raw_output)
 429                                         snprintf(filename, NAME_MAX, "out_q%03d.jpg", quality);
 430                                 else
 431                                         snprintf(filename, NAME_MAX, "out.raw");
 432                                 file = fopen(filename, "wb");
 433                                 fwrite(out_picture, 1, out_picture_size, file);
 434                                 fclose(file);
 435                         }
 436 #else
 437                         (void) dump_frame;
 438 #endif
 439
 440                         ret = am7xxx_send_image_async(dev,
 441                                                       image_format,
 442                                                       (output_ctx.codec_ctx)->width,
 443                                                       (output_ctx.codec_ctx)->height,
 444                                                       out_picture,
 445                                                       out_picture_size);
 446                         if (ret < 0) {
 447                                 perror("am7xxx_send_image_async");
 448                                 run = 0;
 449                                 goto end_while;
 450                         }
 451                 }
 452 end_while:
 453                 if (!output_ctx.raw_output && got_packet)
 454                         av_packet_unref(&out_packet);
 455                 av_packet_unref(&in_packet);
 456         }
 457
 458         sws_freeContext(sw_scale_ctx);
 459 cleanup_out_buf:
 460         av_free(out_buf);
 461 cleanup_picture_scaled:
 462         av_frame_free(&picture_scaled);
 463 cleanup_picture_raw:
 464         av_frame_free(&picture_raw);
 465
 466 cleanup_output:
 467         /* av_free is needed as well,
 468          * see http://libav.org/doxygen/master/avcodec_8h.html#a5d7440cd7ea195bd0b14f21a00ef36dd
 469          */
 470         avcodec_close(output_ctx.codec_ctx);
 471         av_free(output_ctx.codec_ctx);
 472
 473 cleanup_input:
 474         avcodec_close(input_ctx.codec_ctx);
 475         avformat_close_input(&(input_ctx.format_ctx));
 476
 477 out:
 478         return ret;
 479 }
 480
 481 #ifdef HAVE_XCB
 482 #include <xcb/xcb.h>
 483 static int x_get_screen_dimensions(const char *displayname, int *width, int *height)
 484 {
 485         int i, screen_number;
 486         xcb_connection_t *connection;
 487         const xcb_setup_t *setup;
 488         xcb_screen_iterator_t iter;
 489
 490         connection = xcb_connect(displayname, &screen_number);
 491         if (xcb_connection_has_error(connection)) {
 492                 fprintf(stderr, "Cannot open a connection to %s\n", displayname);
 493                 return -EINVAL;
 494         }
 495
 496         setup = xcb_get_setup(connection);
 497         if (setup == NULL) {
 498                 fprintf(stderr, "Cannot get setup for %s\n", displayname);
 499                 xcb_disconnect(connection);
 500                 return -EINVAL;
 501         }
 502
 503         iter = xcb_setup_roots_iterator(setup);
 504         for (i = 0; i < screen_number; ++i) {
 505                 xcb_screen_next(&iter);
 506         }
 507
 508         xcb_screen_t *screen = iter.data;
 509
 510         *width = screen->width_in_pixels;
 511         *height = screen->height_in_pixels;
 512
 513         xcb_disconnect(connection);
 514
 515         return 0;
 516 }
 517
 518 static char *get_x_screen_size(const char *input_path)
 519 {
 520         int len;
 521         int width;
 522         int height;
 523         char *screen_size;
 524         int ret;
 525
 526         ret = x_get_screen_dimensions(input_path, &width, &height);
 527         if (ret < 0) {
 528                 fprintf(stderr, "Cannot get screen dimensions for %s\n", input_path);
 529                 return NULL;
 530         }
 531
 532         len = snprintf(NULL, 0, "%dx%d", width, height);
 533
 534         screen_size = malloc((len + 1) * sizeof(char));
 535         if (screen_size == NULL) {
 536                 perror("malloc");
 537                 return NULL;
 538         }
 539
 540         len = snprintf(screen_size, len + 1, "%dx%d", width, height);
 541         if (len < 0) {
 542                 free(screen_size);
 543                 screen_size = NULL;
 544                 return NULL;
 545         }
 546         return screen_size;
 547 }
 548 #else
 549 static char *get_x_screen_size(const char *input_path)
 550 {
 551         (void) input_path;
 552         fprintf(stderr, "%s: fallback implementation, assuming a vga screen\n", __func__);
 553         return strdup("vga");
 554 }
 555 #endif
 556
 557 static void unset_run(int signo)
 558 {
 559         (void) signo;
 560         run = 0;
 561 }
 562
 563 #ifdef HAVE_SIGACTION
 564 static int set_signal_handler(void (*signal_handler)(int))
 565 {
 566         struct sigaction new_action;
 567         struct sigaction old_action;
 568         int ret;
 569
 570         new_action.sa_handler = signal_handler;
 571         sigemptyset(&new_action.sa_mask);
 572         new_action.sa_flags = 0;
 573
 574         ret = sigaction(SIGINT, NULL, &old_action);
 575         if (ret < 0) {
 576                 perror("sigaction on old_action");
 577                 goto out;
 578         }
 579
 580         if (old_action.sa_handler != SIG_IGN) {
 581                 ret = sigaction(SIGINT, &new_action, NULL);
 582                 if (ret < 0) {
 583                         perror("sigaction on new_action");
 584                         goto out;
 585                 }
 586         }
 587
 588 out:
 589         return ret;
 590 }
 591 #else
 592 static int set_signal_handler(void (*signal_handler)(int))
 593 {
 594         (void)signal_handler;
 595         fprintf(stderr, "set_signal_handler() not implemented, sigaction not available\n");
 596         return 0;
 597 }
 598 #endif
 599
 600
 601 static void usage(char *name)
 602 {
 603         printf("usage: %s [OPTIONS]\n\n", name);
 604         printf("OPTIONS:\n");
 605         printf("\t-d <index>\t\tthe device index (default is 0)\n");
 606 #ifdef DEBUG
 607         printf("\t-D \t\t\tdump the last frame to a file (only active in DEBUG mode)\n");
 608 #endif
 609         printf("\t-f <input format>\tthe input device format\n");
 610         printf("\t-i <input path>\t\tthe input path\n");
 611         printf("\t-o <options>\t\ta comma separated list of input format options\n");
 612         printf("\t\t\t\tEXAMPLE:\n");
 613         printf("\t\t\t\t\t-o draw_mouse=1,framerate=100,video_size=800x480\n");
 614         printf("\t-s <scaling method>\tthe rescaling method (see swscale.h)\n");
 615         printf("\t-u \t\t\tupscale the image if smaller than the display dimensions\n");
 616         printf("\t-F <format>\t\tthe image format to use (default is JPEG)\n");
 617         printf("\t\t\t\tSUPPORTED FORMATS:\n");
 618         printf("\t\t\t\t\t1 - JPEG\n");
 619         printf("\t\t\t\t\t2 - NV12\n");
 620         printf("\t-q <quality>\t\tquality of jpeg sent to the device, between 1 and 100\n");
 621         printf("\t-l <log level>\t\tthe verbosity level of libam7xxx output (0-5)\n");
 622         printf("\t-p <power mode>\t\tthe power mode of device, between %d (off) and %d (turbo)\n",
 623                AM7XXX_POWER_OFF, AM7XXX_POWER_TURBO);
 624         printf("\t\t\t\tWARNING: Level 2 and greater require the master AND\n");
 625         printf("\t\t\t\t         the slave connector to be plugged in.\n");
 626         printf("\t-z <zoom mode>\t\tthe display zoom mode, between %d (original) and %d (tele)\n",
 627                AM7XXX_ZOOM_ORIGINAL, AM7XXX_ZOOM_TELE);
 628         printf("\t-h \t\t\tthis help message\n");
 629         printf("\n\nEXAMPLES OF USE:\n");
 630         printf("\t%s -f x11grab -i :0.0 -o video_size=800x480\n", name);
 631         printf("\t%s -f fbdev -i /dev/fb0\n", name);
 632         printf("\t%s -f video4linux2 -i /dev/video0 -o video_size=320x240,frame_rate=100 -u -q 90\n", name);
 633         printf("\t%s -i http://download.blender.org/peach/bigbuckbunny_movies/BigBuckBunny_640x360.m4v\n", name);
 634 }
 635
 636 int main(int argc, char *argv[])
 637 {
 638         int ret;
 639         int opt;
 640         char *subopts;
 641         char *subopts_saved;
 642         char *subopt;
 643         char *input_format_string = NULL;
 644         AVDictionary *options = NULL;
 645         char *input_path = NULL;
 646         unsigned int rescale_method = SWS_BICUBIC;
 647         unsigned int upscale = 0;
 648         unsigned int quality = 95;
 649         int log_level = AM7XXX_LOG_INFO;
 650         int device_index = 0;
 651         int power_mode = AM7XXX_POWER_LOW;
 652         int zoom = AM7XXX_ZOOM_ORIGINAL;
 653         int format = AM7XXX_IMAGE_FORMAT_JPEG;
 654         am7xxx_context *ctx;
 655         am7xxx_device *dev;
 656         int dump_frame = 0;
 657
 658         while ((opt = getopt(argc, argv, "d:Df:i:o:s:uF:q:l:p:z:h")) != -1) {
 659                 switch (opt) {
 660                 case 'd':
 661                         device_index = atoi(optarg);
 662                         if (device_index < 0) {
 663                                 fprintf(stderr, "Unsupported device index\n");
 664                                 ret = -EINVAL;
 665                                 goto out;
 666                         }
 667                         break;
 668                 case 'D':
 669                         dump_frame = 1;
 670 #ifndef DEBUG
 671                         fprintf(stderr, "Warning: the -D option is only active in DEBUG mode.\n");
 672 #endif
 673                         break;
 674                 case 'f':
 675                         input_format_string = strdup(optarg);
 676                         break;
 677                 case 'i':
 678                         input_path = strdup(optarg);
 679                         break;
 680                 case 'o':
 681 #ifdef HAVE_STRTOK_R
 682                         /*
 683                          * parse suboptions, the expected format is something
 684                          * like:
 685                          *   draw_mouse=1,framerate=100,video_size=800x480
 686                          */
 687                         subopts = subopts_saved = strdup(optarg);
 688                         while ((subopt = strtok_r(subopts, ",", &subopts))) {
 689                                 char *subopt_name = strtok_r(subopt, "=", &subopt);
 690                                 char *subopt_value = strtok_r(NULL, "", &subopt);
 691                                 if (subopt_value == NULL) {
 692                                         fprintf(stderr, "invalid suboption: %s\n", subopt_name);
 693                                         continue;
 694                                 }
 695                                 av_dict_set(&options, subopt_name, subopt_value, 0);
 696                         }
 697                         free(subopts_saved);
 698 #else
 699                         fprintf(stderr, "Option '-o' not implemented\n");
 700 #endif
 701                         break;
 702                 case 's':
 703                         rescale_method = atoi(optarg);
 704                         switch(rescale_method) {
 705                         case SWS_FAST_BILINEAR:
 706                         case SWS_BILINEAR:
 707                         case SWS_BICUBIC:
 708                         case SWS_X:
 709                         case SWS_POINT:
 710                         case SWS_AREA:
 711                         case SWS_BICUBLIN:
 712                         case SWS_GAUSS:
 713                         case SWS_SINC:
 714                         case SWS_LANCZOS:
 715                         case SWS_SPLINE:
 716                                 break;
 717                         default:
 718                                 fprintf(stderr, "Unsupported rescale method\n");
 719                                 ret = -EINVAL;
 720                                 goto out;
 721                         }
 722                         break;
 723                 case 'u':
 724                         upscale = 1;
 725                         break;
 726                 case 'F':
 727                         format = atoi(optarg);
 728                         switch(format) {
 729                         case AM7XXX_IMAGE_FORMAT_JPEG:
 730                                 fprintf(stdout, "JPEG format\n");
 731                                 break;
 732                         case AM7XXX_IMAGE_FORMAT_NV12:
 733                                 fprintf(stdout, "NV12 format\n");
 734                                 break;
 735                         default:
 736                                 fprintf(stderr, "Unsupported format\n");
 737                                 ret = -EINVAL;
 738                                 goto out;
 739                         }
 740                         break;
 741                 case 'q':
 742                         quality = atoi(optarg);
 743                         if (quality < 1 || quality > 100) {
 744                                 fprintf(stderr, "Invalid quality value, must be between 1 and 100\n");
 745                                 ret = -EINVAL;
 746                                 goto out;
 747                         }
 748                         break;
 749                 case 'l':
 750                         log_level = atoi(optarg);
 751                         if (log_level < AM7XXX_LOG_FATAL || log_level > AM7XXX_LOG_TRACE) {
 752                                 fprintf(stderr, "Unsupported log level, falling back to AM7XXX_LOG_ERROR\n");
 753                                 log_level = AM7XXX_LOG_ERROR;
 754                         }
 755                         break;
 756                 case 'p':
 757                         power_mode = atoi(optarg);
 758                         switch(power_mode) {
 759                         case AM7XXX_POWER_OFF:
 760                         case AM7XXX_POWER_LOW:
 761                         case AM7XXX_POWER_MIDDLE:
 762                         case AM7XXX_POWER_HIGH:
 763                         case AM7XXX_POWER_TURBO:
 764                                 fprintf(stdout, "Power mode: %d\n", power_mode);
 765                                 break;
 766                         default:
 767                                 fprintf(stderr, "Invalid power mode value, must be between %d and %d\n",
 768                                         AM7XXX_POWER_OFF, AM7XXX_POWER_TURBO);
 769                                 ret = -EINVAL;
 770                                 goto out;
 771                         }
 772                         break;
 773                 case 'z':
 774                         zoom = atoi(optarg);
 775                         switch(zoom) {
 776                         case AM7XXX_ZOOM_ORIGINAL:
 777                         case AM7XXX_ZOOM_H:
 778                         case AM7XXX_ZOOM_H_V:
 779                         case AM7XXX_ZOOM_TEST:
 780                         case AM7XXX_ZOOM_TELE:
 781                                 fprintf(stdout, "Zoom: %d\n", zoom);
 782                                 break;
 783                         default:
 784                                 fprintf(stderr, "Invalid zoom mode value, must be between %d and %d\n",
 785                                         AM7XXX_ZOOM_ORIGINAL, AM7XXX_ZOOM_TELE);
 786                                 ret = -EINVAL;
 787                                 goto out;
 788                         }
 789                         break;
 790                 case 'h':
 791                         usage(argv[0]);
 792                         ret = 0;
 793                         goto out;
 794                 default: /* '?' */
 795                         usage(argv[0]);
 796                         ret = -EINVAL;
 797                         goto out;
 798                 }
 799         }
 800
 801         if (input_path == NULL) {
 802                 fprintf(stderr, "The -i option must always be passed\n\n");
 803                 usage(argv[0]);
 804                 ret = -EINVAL;
 805                 goto out;
 806         }
 807
 808         /*
 809          * When the input format is 'x11grab' set some useful fallback options
 810          * if not supplied by the user, in particular grab full screen
 811          */
 812         if (input_format_string && strcmp(input_format_string, "x11grab") == 0) {
 813                 char *video_size;
 814
 815                 video_size = get_x_screen_size(input_path);
 816
 817                 if (!av_dict_get(options, "video_size", NULL, 0))
 818                         av_dict_set(&options, "video_size", video_size, 0);
 819
 820                 if (!av_dict_get(options, "framerate", NULL, 0))
 821                         av_dict_set(&options, "framerate", "60", 0);
 822
 823                 if (!av_dict_get(options, "draw_mouse", NULL, 0))
 824                         av_dict_set(&options, "draw_mouse",  "1", 0);
 825
 826                 free(video_size);
 827         }
 828
 829         ret = set_signal_handler(unset_run);
 830         if (ret < 0) {
 831                 perror("sigaction");
 832                 goto out;
 833         }
 834
 835         ret = am7xxx_init(&ctx);
 836         if (ret < 0) {
 837                 perror("am7xxx_init");
 838                 goto out;
 839         }
 840
 841         am7xxx_set_log_level(ctx, log_level);
 842
 843         ret = am7xxx_open_device(ctx, &dev, device_index);
 844         if (ret < 0) {
 845                 perror("am7xxx_open_device");
 846                 goto cleanup;
 847         }
 848
 849         ret = am7xxx_set_zoom_mode(dev, zoom);
 850         if (ret < 0) {
 851                 perror("am7xxx_set_zoom_mode");
 852                 goto cleanup;
 853         }
 854
 855         ret = am7xxx_set_power_mode(dev, power_mode);
 856         if (ret < 0) {
 857                 perror("am7xxx_set_power_mode");
 858                 goto cleanup;
 859         }
 860
 861         /* When setting AM7XXX_ZOOM_TEST don't display the actual image */
 862         if (zoom == AM7XXX_ZOOM_TEST)
 863                 goto cleanup;
 864
 865         ret = am7xxx_play(input_format_string,
 866                           &options,
 867                           input_path,
 868                           rescale_method,
 869                           upscale,
 870                           quality,
 871                           format,
 872                           dev,
 873                           dump_frame);
 874         if (ret < 0) {
 875                 fprintf(stderr, "am7xxx_play failed\n");
 876                 goto cleanup;
 877         }
 878
 879 cleanup:
 880         am7xxx_shutdown(ctx);
 881 out:
 882         av_dict_free(&options);
 883         free(input_path);
 884         free(input_format_string);
 885         return ret;
 886 }