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 #include <stdio.h>
  21 #include <stdint.h>
  22 #include <string.h>
  23 #include <signal.h>
  24 #include <getopt.h>
  25
  26 #include <libavdevice/avdevice.h>
  27 #include <libavformat/avformat.h>
  28 #include <libswscale/swscale.h>
  29
  30 #include <am7xxx.h>
  31
  32 static unsigned int run = 1;
  33
  34 struct video_input_ctx {
  35         AVFormatContext *format_ctx;
  36         AVCodecContext  *codec_ctx;
  37         int video_stream_index;
  38 };
  39
  40 static int video_input_init(struct video_input_ctx *input_ctx,
  41                             const char *input_format_string,
  42                             const char *input_path,
  43                             AVDictionary **input_options)
  44 {
  45         AVInputFormat *input_format = NULL;
  46         AVFormatContext *input_format_ctx;
  47         AVCodecContext *input_codec_ctx;
  48         AVCodec *input_codec;
  49         int video_index;
  50         unsigned int i;
  51         int ret;
  52
  53         avdevice_register_all();
  54         avcodec_register_all();
  55         av_register_all();
  56
  57         if (input_format_string) {
  58                 /* find the desired input format */
  59                 input_format = av_find_input_format(input_format_string);
  60                 if (input_format == NULL) {
  61                         fprintf(stderr, "cannot find input format\n");
  62                         ret = -ENODEV;
  63                         goto out;
  64                 }
  65         }
  66
  67         if (input_path == NULL) {
  68                 fprintf(stderr, "input_path must not be NULL!\n");
  69                 ret = -EINVAL;
  70                 goto out;
  71         }
  72
  73         /* open the input format/device */
  74         input_format_ctx = NULL;
  75         ret = avformat_open_input(&input_format_ctx,
  76                                   input_path,
  77                                   input_format,
  78                                   input_options);
  79         if (ret < 0) {
  80                 fprintf(stderr, "cannot open input format/device\n");
  81                 goto out;
  82         }
  83
  84         /* get information on the input stream (e.g. format, bitrate, framerate) */
  85         ret = avformat_find_stream_info(input_format_ctx, NULL);
  86         if (ret < 0) {
  87                 fprintf(stderr, "cannot get information on the stream");
  88                 goto cleanup;
  89         }
  90
  91         /* dump what was found */
  92         av_dump_format(input_format_ctx, 0, input_path, 0);
  93
  94         /* look for the first video_stream */
  95         video_index = -1;
  96         for (i = 0; i < input_format_ctx->nb_streams; i++)
  97                 if (input_format_ctx->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
  98                         video_index = i;
  99                         break;
 100                 }
 101         if (video_index == -1) {
 102                 fprintf(stderr, "cannot find any video streams\n");
 103                 ret = -ENOTSUP;
 104                 goto cleanup;
 105         }
 106
 107         /* get a pointer to the codec context for the video stream */
 108         input_codec_ctx = input_format_ctx->streams[video_index]->codec;
 109         if (input_codec_ctx == NULL) {
 110                 fprintf(stderr, "input codec context is not valid\n");
 111                 ret = -ENOTSUP;
 112                 goto cleanup;
 113         }
 114
 115         /* find the decoder for the video stream */
 116         input_codec = avcodec_find_decoder(input_codec_ctx->codec_id);
 117         if (input_codec == NULL) {
 118                 fprintf(stderr, "input_codec is NULL!");
 119                 ret = -ENOTSUP;
 120                 goto cleanup;
 121         }
 122
 123         /* open the decoder */
 124         ret = avcodec_open2(input_codec_ctx, input_codec, NULL);
 125         if (ret < 0) {
 126                 fprintf(stderr, "cannot open input codec\n");
 127                 ret = -ENOTSUP;
 128                 goto cleanup;
 129         }
 130
 131         input_ctx->format_ctx = input_format_ctx;
 132         input_ctx->codec_ctx = input_codec_ctx;
 133         input_ctx->video_stream_index = video_index;
 134
 135         ret = 0;
 136         goto out;
 137
 138 cleanup:
 139         avformat_close_input(&input_format_ctx);
 140 out:
 141         av_dict_free(input_options);
 142         *input_options = NULL;
 143         return ret;
 144 }
 145
 146
 147 struct video_output_ctx {
 148         AVCodecContext  *codec_ctx;
 149         int raw_output;
 150 };
 151
 152 static int video_output_init(struct video_output_ctx *output_ctx,
 153                              struct video_input_ctx *input_ctx,
 154                              unsigned int upscale,
 155                              unsigned int quality,
 156                              am7xxx_image_format image_format,
 157                              am7xxx_device *dev)
 158 {
 159         AVCodecContext *output_codec_ctx;
 160         AVCodec *output_codec;
 161         unsigned int new_output_width;
 162         unsigned int new_output_height;
 163         int ret;
 164
 165         if (input_ctx == NULL) {
 166                 fprintf(stderr, "input_ctx must not be NULL!");
 167                 ret = -EINVAL;
 168                 goto out;
 169         }
 170
 171         /* create the encoder context */
 172         output_codec_ctx = avcodec_alloc_context3(NULL);
 173         if (output_codec_ctx == NULL) {
 174                 fprintf(stderr, "cannot allocate output codec context!");
 175                 ret = -ENOMEM;
 176                 goto out;
 177         }
 178
 179         /* Calculate the new output dimension so the original picture is shown
 180          * in its entirety */
 181         ret = am7xxx_calc_scaled_image_dimensions(dev,
 182                                                   upscale,
 183                                                   (input_ctx->codec_ctx)->width,
 184                                                   (input_ctx->codec_ctx)->height,
 185                                                   &new_output_width,
 186                                                   &new_output_height);
 187         if (ret < 0) {
 188                 fprintf(stderr, "cannot calculate output dimension\n");
 189                 goto cleanup;
 190         }
 191
 192         /* put sample parameters */
 193         output_codec_ctx->bit_rate   = (input_ctx->codec_ctx)->bit_rate;
 194         output_codec_ctx->width      = new_output_width;
 195         output_codec_ctx->height     = new_output_height;
 196         output_codec_ctx->time_base.num  = (input_ctx->codec_ctx)->time_base.num;
 197         output_codec_ctx->time_base.den  = (input_ctx->codec_ctx)->time_base.den;
 198
 199         /* When the raw format is requested we don't actually need to setup
 200          * and open a decoder
 201          */
 202         if (image_format == AM7XXX_IMAGE_FORMAT_NV12) {
 203                 fprintf(stdout, "using raw output format\n");
 204                 output_codec_ctx->pix_fmt    = PIX_FMT_NV12;
 205                 output_ctx->codec_ctx = output_codec_ctx;
 206                 output_ctx->raw_output = 1;
 207                 ret = 0;
 208                 goto out;
 209         }
 210
 211         output_codec_ctx->pix_fmt    = PIX_FMT_YUVJ420P;
 212         output_codec_ctx->codec_id   = CODEC_ID_MJPEG;
 213         output_codec_ctx->codec_type = AVMEDIA_TYPE_VIDEO;
 214
 215         /* Set quality and other VBR settings */
 216
 217         /* @note: 'quality' is expected to be between 1 and 100, but a value
 218          * between 0 to 99 has to be passed when calculating qmin and qmax.
 219          * This way qmin and qmax will cover the range 1-FF_QUALITY_SCALE, and
 220          * in particular they won't be 0, this is needed because they are used
 221          * as divisor somewhere in the encoding process */
 222         output_codec_ctx->qmin       = output_codec_ctx->qmax = ((100 - (quality - 1)) * FF_QUALITY_SCALE) / 100;
 223         output_codec_ctx->mb_lmin    = output_codec_ctx->lmin = output_codec_ctx->qmin * FF_QP2LAMBDA;
 224         output_codec_ctx->mb_lmax    = output_codec_ctx->lmax = output_codec_ctx->qmax * FF_QP2LAMBDA;
 225         output_codec_ctx->flags      |= CODEC_FLAG_QSCALE;
 226         output_codec_ctx->global_quality = output_codec_ctx->qmin * FF_QP2LAMBDA;
 227
 228         /* find the encoder */
 229         output_codec = avcodec_find_encoder(output_codec_ctx->codec_id);
 230         if (output_codec == NULL) {
 231                 fprintf(stderr, "cannot find output codec!\n");
 232                 ret = -ENOTSUP;
 233                 goto cleanup;
 234         }
 235
 236         /* open the codec */
 237         ret = avcodec_open2(output_codec_ctx, output_codec, NULL);
 238         if (ret < 0) {
 239                 fprintf(stderr, "could not open output codec!\n");
 240                 goto cleanup;
 241         }
 242
 243         output_ctx->codec_ctx = output_codec_ctx;
 244         output_ctx->raw_output = 0;
 245
 246         ret = 0;
 247         goto out;
 248
 249 cleanup:
 250         avcodec_close(output_codec_ctx);
 251         av_free(output_codec_ctx);
 252 out:
 253         return ret;
 254 }
 255
 256
 257 static int am7xxx_play(const char *input_format_string,
 258                        AVDictionary **input_options,
 259                        const char *input_path,
 260                        unsigned int rescale_method,
 261                        unsigned int upscale,
 262                        unsigned int quality,
 263                        am7xxx_image_format image_format,
 264                        am7xxx_device *dev)
 265 {
 266         struct video_input_ctx input_ctx;
 267         struct video_output_ctx output_ctx;
 268         AVFrame *picture_raw;
 269         AVFrame *picture_scaled;
 270         int out_buf_size;
 271         uint8_t *out_buf;
 272         int out_picture_size;
 273         struct SwsContext *sw_scale_ctx;
 274         AVPacket packet;
 275         int got_picture;
 276         int ret = 0;
 277
 278         ret = video_input_init(&input_ctx, input_format_string, input_path, input_options);
 279         if (ret < 0) {
 280                 fprintf(stderr, "cannot initialize input\n");
 281                 goto out;
 282         }
 283
 284         ret = video_output_init(&output_ctx, &input_ctx, upscale, quality, image_format, dev);
 285         if (ret < 0) {
 286                 fprintf(stderr, "cannot initialize input\n");
 287                 goto cleanup_input;
 288         }
 289
 290         /* allocate an input frame */
 291         picture_raw = avcodec_alloc_frame();
 292         if (picture_raw == NULL) {
 293                 fprintf(stderr, "cannot allocate the raw picture frame!");
 294                 ret = -ENOMEM;
 295                 goto cleanup_output;
 296         }
 297
 298         /* allocate output frame */
 299         picture_scaled = avcodec_alloc_frame();
 300         if (picture_scaled == NULL) {
 301                 fprintf(stderr, "cannot allocate the scaled picture!\n");
 302                 ret = -ENOMEM;
 303                 goto cleanup_picture_raw;
 304         }
 305
 306         /* calculate the bytes needed for the output image and create buffer for the output image */
 307         out_buf_size = avpicture_get_size((output_ctx.codec_ctx)->pix_fmt,
 308                                           (output_ctx.codec_ctx)->width,
 309                                           (output_ctx.codec_ctx)->height);
 310         out_buf = av_malloc(out_buf_size * sizeof(uint8_t));
 311         if (out_buf == NULL) {
 312                 fprintf(stderr, "cannot allocate output data buffer!\n");
 313                 ret = -ENOMEM;
 314                 goto cleanup_picture_scaled;
 315         }
 316
 317         /* assign appropriate parts of buffer to image planes in picture_scaled */
 318         avpicture_fill((AVPicture *)picture_scaled,
 319                        out_buf,
 320                        (output_ctx.codec_ctx)->pix_fmt,
 321                        (output_ctx.codec_ctx)->width,
 322                        (output_ctx.codec_ctx)->height);
 323
 324         sw_scale_ctx = sws_getCachedContext(NULL,
 325                                             (input_ctx.codec_ctx)->width,
 326                                             (input_ctx.codec_ctx)->height,
 327                                             (input_ctx.codec_ctx)->pix_fmt,
 328                                             (output_ctx.codec_ctx)->width,
 329                                             (output_ctx.codec_ctx)->height,
 330                                             (output_ctx.codec_ctx)->pix_fmt,
 331                                             rescale_method,
 332                                             NULL, NULL, NULL);
 333         if (sw_scale_ctx == NULL) {
 334                 fprintf(stderr, "cannot set up the rescaling context!\n");
 335                 ret = -EINVAL;
 336                 goto cleanup_out_buf;
 337         }
 338
 339         while (run) {
 340                 /* read packet */
 341                 ret = av_read_frame(input_ctx.format_ctx, &packet);
 342                 if (ret < 0) {
 343                         if (ret == (int)AVERROR_EOF || input_ctx.format_ctx->pb->eof_reached)
 344                                 ret = 0;
 345                         else
 346                                 fprintf(stderr, "av_read_frame failed, EOF?\n");
 347                         run = 0;
 348                         goto end_while;
 349                 }
 350
 351                 if (packet.stream_index != input_ctx.video_stream_index) {
 352                         /* that is more or less a "continue", but there is
 353                          * still the packet to free */
 354                         goto end_while;
 355                 }
 356
 357                 /* decode */
 358                 got_picture = 0;
 359                 ret = avcodec_decode_video2(input_ctx.codec_ctx, picture_raw, &got_picture, &packet);
 360                 if (ret < 0) {
 361                         fprintf(stderr, "cannot decode video\n");
 362                         run = 0;
 363                         goto end_while;
 364                 }
 365
 366                 /* if we get the complete frame */
 367                 if (got_picture) {
 368                         /* convert it to YUV */
 369                         sws_scale(sw_scale_ctx,
 370                                   (const uint8_t * const*)picture_raw->data,
 371                                   picture_raw->linesize,
 372                                   0,
 373                                   (input_ctx.codec_ctx)->height,
 374                                   picture_scaled->data,
 375                                   picture_scaled->linesize);
 376
 377                         if (output_ctx.raw_output) {
 378                                 out_picture_size = out_buf_size;
 379                         } else {
 380                                 picture_scaled->quality = (output_ctx.codec_ctx)->global_quality;
 381                                 /* TODO: switch to avcodec_encode_video2() eventually */
 382                                 out_picture_size = avcodec_encode_video(output_ctx.codec_ctx,
 383                                                                         out_buf,
 384                                                                         out_buf_size,
 385                                                                         picture_scaled);
 386                                 if (out_picture_size < 0) {
 387                                         fprintf(stderr, "cannot encode video\n");
 388                                         ret = out_picture_size;
 389                                         run = 0;
 390                                         goto end_while;
 391                                 }
 392                         }
 393
 394 #ifdef DEBUG
 395                         char filename[NAME_MAX];
 396                         FILE *file;
 397                         if (!output_ctx.raw_output)
 398                                 snprintf(filename, NAME_MAX, "out_q%03d.jpg", quality);
 399                         else
 400                                 snprintf(filename, NAME_MAX, "out.raw");
 401                         file = fopen(filename, "wb");
 402                         fwrite(out_buf, 1, out_picture_size, file);
 403                         fclose(file);
 404 #endif
 405
 406                         ret = am7xxx_send_image(dev,
 407                                                 image_format,
 408                                                 (output_ctx.codec_ctx)->width,
 409                                                 (output_ctx.codec_ctx)->height,
 410                                                 out_buf,
 411                                                 out_picture_size);
 412                         if (ret < 0) {
 413                                 perror("am7xxx_send_image");
 414                                 run = 0;
 415                                 goto end_while;
 416                         }
 417                 }
 418 end_while:
 419                 av_free_packet(&packet);
 420         }
 421
 422         sws_freeContext(sw_scale_ctx);
 423 cleanup_out_buf:
 424         av_free(out_buf);
 425 cleanup_picture_scaled:
 426         av_free(picture_scaled);
 427 cleanup_picture_raw:
 428         av_free(picture_raw);
 429
 430 cleanup_output:
 431         /* av_free is needed as well,
 432          * see http://libav.org/doxygen/master/avcodec_8h.html#a5d7440cd7ea195bd0b14f21a00ef36dd
 433          */
 434         avcodec_close(output_ctx.codec_ctx);
 435         av_free(output_ctx.codec_ctx);
 436
 437 cleanup_input:
 438         avcodec_close(input_ctx.codec_ctx);
 439         avformat_close_input(&(input_ctx.format_ctx));
 440
 441 out:
 442         return ret;
 443 }
 444
 445 #ifdef HAVE_XCB
 446 #include <xcb/xcb.h>
 447 static int x_get_screen_dimensions(const char *displayname, int *width, int *height)
 448 {
 449         int i, screen_number;
 450         xcb_connection_t *connection;
 451         const xcb_setup_t *setup;
 452         xcb_screen_iterator_t iter;
 453
 454         connection = xcb_connect(displayname, &screen_number);
 455         if (xcb_connection_has_error(connection)) {
 456                 fprintf(stderr, "Cannot open a connection to %s\n", displayname);
 457                 return -EINVAL;
 458         }
 459
 460         setup = xcb_get_setup(connection);
 461         if (setup == NULL) {
 462                 fprintf(stderr, "Cannot get setup for %s\n", displayname);
 463                 xcb_disconnect(connection);
 464                 return -EINVAL;
 465         }
 466
 467         iter = xcb_setup_roots_iterator(setup);
 468         for (i = 0; i < screen_number; ++i) {
 469                 xcb_screen_next(&iter);
 470         }
 471
 472         xcb_screen_t *screen = iter.data;
 473
 474         *width = screen->width_in_pixels;
 475         *height = screen->height_in_pixels;
 476
 477         xcb_disconnect(connection);
 478
 479         return 0;
 480 }
 481
 482 static char *get_x_screen_size(const char *input_path)
 483 {
 484         int len;
 485         int width;
 486         int height;
 487         char *screen_size;
 488         int ret;
 489
 490         ret = x_get_screen_dimensions(input_path, &width, &height);
 491         if (ret < 0) {
 492                 fprintf(stderr, "Cannot get screen dimensions for %s\n", input_path);
 493                 return NULL;
 494         }
 495
 496         len = snprintf(NULL, 0, "%dx%d", width, height);
 497
 498         screen_size = malloc((len + 1) * sizeof(char));
 499         if (screen_size == NULL) {
 500                 perror("malloc");
 501                 return NULL;
 502         }
 503
 504         len = snprintf(screen_size, len + 1, "%dx%d", width, height);
 505         if (len < 0) {
 506                 free(screen_size);
 507                 screen_size = NULL;
 508                 return NULL;
 509         }
 510         return screen_size;
 511 }
 512 #else
 513 static char *get_x_screen_size(const char *input_path)
 514 {
 515         (void) input_path;
 516         fprintf(stderr, "%s: fallback implementation\n", __func__);
 517         return strdup("vga");
 518 }
 519 #endif
 520
 521 static void unset_run(int signo)
 522 {
 523         (void) signo;
 524         run = 0;
 525 }
 526
 527 static int set_signal_handler(void (*signal_handler)(int))
 528 {
 529         struct sigaction new_action;
 530         struct sigaction old_action;
 531         int ret = 0;
 532
 533         new_action.sa_handler = signal_handler;
 534         sigemptyset(&new_action.sa_mask);
 535         new_action.sa_flags = 0;
 536
 537         ret = sigaction(SIGINT, NULL, &old_action);
 538         if (ret < 0) {
 539                 perror("sigaction on old_action");
 540                 goto out;
 541         }
 542
 543         if (old_action.sa_handler != SIG_IGN) {
 544                 ret = sigaction(SIGINT, &new_action, NULL);
 545                 if (ret < 0) {
 546                         perror("sigaction on new_action");
 547                         goto out;
 548                 }
 549         }
 550
 551 out:
 552         return ret;
 553 }
 554
 555 static void usage(char *name)
 556 {
 557         printf("usage: %s [OPTIONS]\n\n", name);
 558         printf("OPTIONS:\n");
 559         printf("\t-f <input format>\tthe input device format\n");
 560         printf("\t-i <input path>\t\tthe input path\n");
 561         printf("\t-o <options>\t\ta comma separated list of input format options\n");
 562         printf("\t\t\t\tEXAMPLE:\n");
 563         printf("\t\t\t\t\t-o draw_mouse=1,framerate=100,video_size=800x480\n");
 564         printf("\t-s <scaling method>\tthe rescaling method (see swscale.h)\n");
 565         printf("\t-u \t\t\tupscale the image if smaller than the display dimensions\n");
 566         printf("\t-F <format>\t\tthe image format to use (default is JPEG)\n");
 567         printf("\t\t\t\tSUPPORTED FORMATS:\n");
 568         printf("\t\t\t\t\t1 - JPEG\n");
 569         printf("\t\t\t\t\t2 - NV12\n");
 570         printf("\t-q <quality>\t\tquality of jpeg sent to the device, between 1 and 100\n");
 571         printf("\t-l <log level>\t\tthe verbosity level of libam7xxx output (0-5)\n");
 572         printf("\t-p <power level>\tpower level of device, between %x (off) and %x (maximum)\n", AM7XXX_POWER_OFF, AM7XXX_POWER_TURBO);
 573         printf("\t\t\t\tWARNING: Level 2 and greater require the master AND\n\t\t\t\t\t the slave connector to be plugged in.\n");
 574         printf("\t-h \t\t\tthis help message\n");
 575         printf("\n\nEXAMPLES OF USE:\n");
 576         printf("\t%s -f x11grab -i :0.0 -o video_size=800x480\n", name);
 577         printf("\t%s -f fbdev -i /dev/fb0\n", name);
 578         printf("\t%s -f video4linux2 -i /dev/video0 -o video_size=320x240,frame_rate=100 -u -q 90\n", name);
 579         printf("\t%s -i http://download.blender.org/peach/bigbuckbunny_movies/BigBuckBunny_640x360.m4v\n", name);
 580 }
 581
 582 int main(int argc, char *argv[])
 583 {
 584         int ret;
 585         int opt;
 586         char *subopts;
 587         char *subopts_saved;
 588         char *subopt;
 589         char *input_format_string = NULL;
 590         AVDictionary *options = NULL;
 591         char *input_path = NULL;
 592         unsigned int rescale_method = SWS_BICUBIC;
 593         unsigned int upscale = 0;
 594         unsigned int quality = 95;
 595         int log_level = AM7XXX_LOG_INFO;
 596         am7xxx_power_mode power_mode = AM7XXX_POWER_LOW;
 597         int format = AM7XXX_IMAGE_FORMAT_JPEG;
 598         am7xxx_context *ctx;
 599         am7xxx_device *dev;
 600
 601         while ((opt = getopt(argc, argv, "f:i:o:s:uF:q:l:hp:")) != -1) {
 602                 switch (opt) {
 603                 case 'f':
 604                         input_format_string = strdup(optarg);
 605                         break;
 606                 case 'i':
 607                         input_path = strdup(optarg);
 608                         break;
 609                 case 'o':
 610                         /*
 611                          * parse suboptions, the expected format is something
 612                          * like:
 613                          *   draw_mouse=1,framerate=100,video_size=800x480
 614                          */
 615                         subopts = subopts_saved = strdup(optarg);
 616                         while((subopt = strtok_r(subopts, ",", &subopts))) {
 617                                 char *subopt_name = strtok_r(subopt, "=", &subopt);
 618                                 char *subopt_value = strtok_r(NULL, "", &subopt);
 619                                 if (subopt_value == NULL) {
 620                                         fprintf(stderr, "invalid suboption: %s\n", subopt_name);
 621                                         continue;
 622                                 }
 623                                 av_dict_set(&options, subopt_name, subopt_value, 0);
 624                         }
 625                         free(subopts_saved);
 626                         break;
 627                 case 's':
 628                         rescale_method = atoi(optarg);
 629                         switch(rescale_method) {
 630                         case SWS_FAST_BILINEAR:
 631                         case SWS_BILINEAR:
 632                         case SWS_BICUBIC:
 633                         case SWS_X:
 634                         case SWS_POINT:
 635                         case SWS_AREA:
 636                         case SWS_BICUBLIN:
 637                         case SWS_GAUSS:
 638                         case SWS_SINC:
 639                         case SWS_LANCZOS:
 640                         case SWS_SPLINE:
 641                                 break;
 642                         default:
 643                                 fprintf(stderr, "Unsupported rescale method\n");
 644                                 ret = -EINVAL;
 645                                 goto out;
 646                         }
 647                         break;
 648                 case 'u':
 649                         upscale = 1;
 650                         break;
 651                 case 'F':
 652                         format = atoi(optarg);
 653                         switch(format) {
 654                         case AM7XXX_IMAGE_FORMAT_JPEG:
 655                                 fprintf(stdout, "JPEG format\n");
 656                                 break;
 657                         case AM7XXX_IMAGE_FORMAT_NV12:
 658                                 fprintf(stdout, "NV12 format\n");
 659                                 break;
 660                         default:
 661                                 fprintf(stderr, "Unsupported format\n");
 662                                 ret = -EINVAL;
 663                                 goto out;
 664                         }
 665                         break;
 666                 case 'q':
 667                         quality = atoi(optarg);
 668                         if (quality < 1 || quality > 100) {
 669                                 fprintf(stderr, "Invalid quality value, must be between 1 and 100\n");
 670                                 ret = -EINVAL;
 671                                 goto out;
 672                         }
 673                         break;
 674                 case 'l':
 675                         log_level = atoi(optarg);
 676                         if (log_level < AM7XXX_LOG_FATAL || log_level > AM7XXX_LOG_TRACE) {
 677                                 fprintf(stderr, "Unsupported log level, falling back to AM7XXX_LOG_ERROR\n");
 678                                 log_level = AM7XXX_LOG_ERROR;
 679                         }
 680                         break;
 681                 case 'h':
 682                         usage(argv[0]);
 683                         ret = 0;
 684                         goto out;
 685                         break;
 686                 case 'p':
 687                         power_mode = atoi(optarg);
 688                         switch(power_mode) {
 689                         case AM7XXX_POWER_OFF:
 690                         case AM7XXX_POWER_LOW:
 691                         case AM7XXX_POWER_MIDDLE:
 692                         case AM7XXX_POWER_HIGH:
 693                         case AM7XXX_POWER_TURBO:
 694                                 fprintf(stdout, "Power mode: %x\n", power_mode);
 695                                 break;
 696                         default:
 697                                 fprintf(stderr, "Invalid power mode value, must be between %x and %x\n", AM7XXX_POWER_OFF, AM7XXX_POWER_TURBO);
 698                                 ret = -EINVAL;
 699                                 goto out;
 700                         }
 701                         break;
 702                 default: /* '?' */
 703                         usage(argv[0]);
 704                         ret = -EINVAL;
 705                         goto out;
 706                 }
 707         }
 708
 709         if (input_path == NULL) {
 710                 fprintf(stderr, "The -i option must always be passed\n");
 711                 ret = -EINVAL;
 712                 goto out;
 713         }
 714
 715         /*
 716          * When the input format is 'x11grab' set some useful fallback options
 717          * if not supplied by the user, in particular grab full screen
 718          */
 719         if (input_format_string && strcmp(input_format_string, "x11grab") == 0) {
 720                 char *video_size;
 721
 722                 video_size = get_x_screen_size(input_path);
 723
 724                 if (!av_dict_get(options, "video_size", NULL, 0))
 725                         av_dict_set(&options, "video_size", video_size, 0);
 726
 727                 if (!av_dict_get(options, "framerate", NULL, 0))
 728                         av_dict_set(&options, "framerate", "60", 0);
 729
 730                 if (!av_dict_get(options, "draw_mouse", NULL, 0))
 731                         av_dict_set(&options, "draw_mouse",  "1", 0);
 732
 733                 free(video_size);
 734         }
 735
 736         ret = set_signal_handler(unset_run);
 737         if (ret < 0) {
 738                 perror("sigaction");
 739                 goto out;
 740         }
 741
 742         ret = am7xxx_init(&ctx);
 743         if (ret < 0) {
 744                 perror("am7xxx_init");
 745                 goto out;
 746         }
 747
 748         am7xxx_set_log_level(ctx, log_level);
 749
 750         ret = am7xxx_open_device(ctx, &dev, 0);
 751         if (ret < 0) {
 752                 perror("am7xxx_open_device");
 753                 goto cleanup;
 754         }
 755
 756         ret = am7xxx_set_power_mode(dev, power_mode);
 757         if (ret < 0) {
 758                 perror("am7xxx_set_power_mode");
 759                 goto cleanup;
 760         }
 761
 762         ret = am7xxx_play(input_format_string,
 763                           &options,
 764                           input_path,
 765                           rescale_method,
 766                           upscale,
 767                           quality,
 768                           format,
 769                           dev);
 770         if (ret < 0) {
 771                 fprintf(stderr, "am7xxx_play failed\n");
 772                 goto cleanup;
 773         }
 774
 775 cleanup:
 776         am7xxx_shutdown(ctx);
 777 out:
 778         av_dict_free(&options);
 779         free(input_path);
 780         free(input_format_string);
 781         return ret;
 782 }