examples/am7xxx-play.c

   1 /*
   2  * am7xxx-play - play stuff on an am7xxx device (e.g. Acer C110, PicoPix 1020)
   3  *
   4  * Copyright (C) 2012  Antonio Ospite <ospite@studenti.unina.it>
   5  *
   6  * This program is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 /**
  21  * @example examples/am7xxx-play.c
  22  * am7xxx-play uses libavdevice, libavformat, libavcodec and libswscale to
  23  * decode the input, encode it to jpeg and display it with libam7xxx.
  24  */
  25
  26 #include <stdio.h>
  27 #include <stdint.h>
  28 #include <string.h>
  29 #include <signal.h>
  30 #include <getopt.h>
  31
  32 #include <libavdevice/avdevice.h>
  33 #include <libavformat/avformat.h>
  34 #include <libswscale/swscale.h>
  35
  36 #include <am7xxx.h>
  37
  38 static unsigned int run = 1;
  39
  40 struct video_input_ctx {
  41         AVFormatContext *format_ctx;
  42         AVCodecContext  *codec_ctx;
  43         int video_stream_index;
  44 };
  45
  46 static int video_input_init(struct video_input_ctx *input_ctx,
  47                             const char *input_format_string,
  48                             const char *input_path,
  49                             AVDictionary **input_options)
  50 {
  51         AVInputFormat *input_format = NULL;
  52         AVFormatContext *input_format_ctx;
  53         AVCodecContext *input_codec_ctx;
  54         AVCodec *input_codec;
  55         int video_index;
  56         unsigned int i;
  57         int ret;
  58
  59         avdevice_register_all();
  60         avcodec_register_all();
  61         av_register_all();
  62
  63         if (input_format_string) {
  64                 /* find the desired input format */
  65                 input_format = av_find_input_format(input_format_string);
  66                 if (input_format == NULL) {
  67                         fprintf(stderr, "cannot find input format\n");
  68                         ret = -ENODEV;
  69                         goto out;
  70                 }
  71         }
  72
  73         if (input_path == NULL) {
  74                 fprintf(stderr, "input_path must not be NULL!\n");
  75                 ret = -EINVAL;
  76                 goto out;
  77         }
  78
  79         /* open the input format/device */
  80         input_format_ctx = NULL;
  81         ret = avformat_open_input(&input_format_ctx,
  82                                   input_path,
  83                                   input_format,
  84                                   input_options);
  85         if (ret < 0) {
  86                 fprintf(stderr, "cannot open input format/device\n");
  87                 goto out;
  88         }
  89
  90         /* get information on the input stream (e.g. format, bitrate, framerate) */
  91         ret = avformat_find_stream_info(input_format_ctx, NULL);
  92         if (ret < 0) {
  93                 fprintf(stderr, "cannot get information on the stream\n");
  94                 goto cleanup;
  95         }
  96
  97         /* dump what was found */
  98         av_dump_format(input_format_ctx, 0, input_path, 0);
  99
 100         /* look for the first video_stream */
 101         video_index = -1;
 102         for (i = 0; i < input_format_ctx->nb_streams; i++)
 103                 if (input_format_ctx->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
 104                         video_index = i;
 105                         break;
 106                 }
 107         if (video_index == -1) {
 108                 fprintf(stderr, "cannot find any video streams\n");
 109                 ret = -ENOTSUP;
 110                 goto cleanup;
 111         }
 112
 113         /* get a pointer to the codec context for the video stream */
 114         input_codec_ctx = input_format_ctx->streams[video_index]->codec;
 115         if (input_codec_ctx == NULL) {
 116                 fprintf(stderr, "input codec context is not valid\n");
 117                 ret = -ENOTSUP;
 118                 goto cleanup;
 119         }
 120
 121         /* find the decoder for the video stream */
 122         input_codec = avcodec_find_decoder(input_codec_ctx->codec_id);
 123         if (input_codec == NULL) {
 124                 fprintf(stderr, "input_codec is NULL!\n");
 125                 ret = -ENOTSUP;
 126                 goto cleanup;
 127         }
 128
 129         /* open the decoder */
 130         ret = avcodec_open2(input_codec_ctx, input_codec, NULL);
 131         if (ret < 0) {
 132                 fprintf(stderr, "cannot open input codec\n");
 133                 ret = -ENOTSUP;
 134                 goto cleanup;
 135         }
 136
 137         input_ctx->format_ctx = input_format_ctx;
 138         input_ctx->codec_ctx = input_codec_ctx;
 139         input_ctx->video_stream_index = video_index;
 140
 141         ret = 0;
 142         goto out;
 143
 144 cleanup:
 145         avformat_close_input(&input_format_ctx);
 146 out:
 147         av_dict_free(input_options);
 148         *input_options = NULL;
 149         return ret;
 150 }
 151
 152
 153 struct video_output_ctx {
 154         AVCodecContext  *codec_ctx;
 155         int raw_output;
 156 };
 157
 158 static int video_output_init(struct video_output_ctx *output_ctx,
 159                              struct video_input_ctx *input_ctx,
 160                              unsigned int upscale,
 161                              unsigned int quality,
 162                              am7xxx_image_format image_format,
 163                              am7xxx_device *dev)
 164 {
 165         AVCodecContext *output_codec_ctx;
 166         AVCodec *output_codec;
 167         unsigned int new_output_width;
 168         unsigned int new_output_height;
 169         int ret;
 170
 171         if (input_ctx == NULL) {
 172                 fprintf(stderr, "input_ctx must not be NULL!\n");
 173                 ret = -EINVAL;
 174                 goto out;
 175         }
 176
 177         /* create the encoder context */
 178         output_codec_ctx = avcodec_alloc_context3(NULL);
 179         if (output_codec_ctx == NULL) {
 180                 fprintf(stderr, "cannot allocate output codec context!\n");
 181                 ret = -ENOMEM;
 182                 goto out;
 183         }
 184
 185         /* Calculate the new output dimension so the original picture is shown
 186          * in its entirety */
 187         ret = am7xxx_calc_scaled_image_dimensions(dev,
 188                                                   upscale,
 189                                                   (input_ctx->codec_ctx)->width,
 190                                                   (input_ctx->codec_ctx)->height,
 191                                                   &new_output_width,
 192                                                   &new_output_height);
 193         if (ret < 0) {
 194                 fprintf(stderr, "cannot calculate output dimension\n");
 195                 goto cleanup;
 196         }
 197
 198         /* put sample parameters */
 199         output_codec_ctx->bit_rate   = (input_ctx->codec_ctx)->bit_rate;
 200         output_codec_ctx->width      = new_output_width;
 201         output_codec_ctx->height     = new_output_height;
 202         output_codec_ctx->time_base.num  = (input_ctx->codec_ctx)->time_base.num;
 203         output_codec_ctx->time_base.den  = (input_ctx->codec_ctx)->time_base.den;
 204
 205         /* When the raw format is requested we don't actually need to setup
 206          * and open a decoder
 207          */
 208         if (image_format == AM7XXX_IMAGE_FORMAT_NV12) {
 209                 fprintf(stdout, "using raw output format\n");
 210                 output_codec_ctx->pix_fmt    = PIX_FMT_NV12;
 211                 output_ctx->codec_ctx = output_codec_ctx;
 212                 output_ctx->raw_output = 1;
 213                 ret = 0;
 214                 goto out;
 215         }
 216
 217         output_codec_ctx->pix_fmt    = PIX_FMT_YUVJ420P;
 218         output_codec_ctx->codec_id   = CODEC_ID_MJPEG;
 219         output_codec_ctx->codec_type = AVMEDIA_TYPE_VIDEO;
 220
 221         /* Set quality and other VBR settings */
 222
 223         /* @note: 'quality' is expected to be between 1 and 100, but a value
 224          * between 0 to 99 has to be passed when calculating qmin and qmax.
 225          * This way qmin and qmax will cover the range 1-FF_QUALITY_SCALE, and
 226          * in particular they won't be 0, this is needed because they are used
 227          * as divisor somewhere in the encoding process */
 228         output_codec_ctx->qmin       = output_codec_ctx->qmax = ((100 - (quality - 1)) * FF_QUALITY_SCALE) / 100;
 229         output_codec_ctx->mb_lmin    = output_codec_ctx->lmin = output_codec_ctx->qmin * FF_QP2LAMBDA;
 230         output_codec_ctx->mb_lmax    = output_codec_ctx->lmax = output_codec_ctx->qmax * FF_QP2LAMBDA;
 231         output_codec_ctx->flags      |= CODEC_FLAG_QSCALE;
 232         output_codec_ctx->global_quality = output_codec_ctx->qmin * FF_QP2LAMBDA;
 233
 234         /* find the encoder */
 235         output_codec = avcodec_find_encoder(output_codec_ctx->codec_id);
 236         if (output_codec == NULL) {
 237                 fprintf(stderr, "cannot find output codec!\n");
 238                 ret = -ENOTSUP;
 239                 goto cleanup;
 240         }
 241
 242         /* open the codec */
 243         ret = avcodec_open2(output_codec_ctx, output_codec, NULL);
 244         if (ret < 0) {
 245                 fprintf(stderr, "could not open output codec!\n");
 246                 goto cleanup;
 247         }
 248
 249         output_ctx->codec_ctx = output_codec_ctx;
 250         output_ctx->raw_output = 0;
 251
 252         ret = 0;
 253         goto out;
 254
 255 cleanup:
 256         avcodec_close(output_codec_ctx);
 257         av_free(output_codec_ctx);
 258 out:
 259         return ret;
 260 }
 261
 262
 263 static int am7xxx_play(const char *input_format_string,
 264                        AVDictionary **input_options,
 265                        const char *input_path,
 266                        unsigned int rescale_method,
 267                        unsigned int upscale,
 268                        unsigned int quality,
 269                        am7xxx_image_format image_format,
 270                        am7xxx_device *dev)
 271 {
 272         struct video_input_ctx input_ctx;
 273         struct video_output_ctx output_ctx;
 274         AVFrame *picture_raw;
 275         AVFrame *picture_scaled;
 276         int out_buf_size;
 277         uint8_t *out_buf;
 278         int out_picture_size;
 279         struct SwsContext *sw_scale_ctx;
 280         AVPacket packet;
 281         int got_picture;
 282         int ret = 0;
 283
 284         ret = video_input_init(&input_ctx, input_format_string, input_path, input_options);
 285         if (ret < 0) {
 286                 fprintf(stderr, "cannot initialize input\n");
 287                 goto out;
 288         }
 289
 290         ret = video_output_init(&output_ctx, &input_ctx, upscale, quality, image_format, dev);
 291         if (ret < 0) {
 292                 fprintf(stderr, "cannot initialize input\n");
 293                 goto cleanup_input;
 294         }
 295
 296         /* allocate an input frame */
 297         picture_raw = avcodec_alloc_frame();
 298         if (picture_raw == NULL) {
 299                 fprintf(stderr, "cannot allocate the raw picture frame!\n");
 300                 ret = -ENOMEM;
 301                 goto cleanup_output;
 302         }
 303
 304         /* allocate output frame */
 305         picture_scaled = avcodec_alloc_frame();
 306         if (picture_scaled == NULL) {
 307                 fprintf(stderr, "cannot allocate the scaled picture!\n");
 308                 ret = -ENOMEM;
 309                 goto cleanup_picture_raw;
 310         }
 311
 312         /* calculate the bytes needed for the output image and create buffer for the output image */
 313         out_buf_size = avpicture_get_size((output_ctx.codec_ctx)->pix_fmt,
 314                                           (output_ctx.codec_ctx)->width,
 315                                           (output_ctx.codec_ctx)->height);
 316         out_buf = av_malloc(out_buf_size * sizeof(uint8_t));
 317         if (out_buf == NULL) {
 318                 fprintf(stderr, "cannot allocate output data buffer!\n");
 319                 ret = -ENOMEM;
 320                 goto cleanup_picture_scaled;
 321         }
 322
 323         /* assign appropriate parts of buffer to image planes in picture_scaled */
 324         avpicture_fill((AVPicture *)picture_scaled,
 325                        out_buf,
 326                        (output_ctx.codec_ctx)->pix_fmt,
 327                        (output_ctx.codec_ctx)->width,
 328                        (output_ctx.codec_ctx)->height);
 329
 330         sw_scale_ctx = sws_getCachedContext(NULL,
 331                                             (input_ctx.codec_ctx)->width,
 332                                             (input_ctx.codec_ctx)->height,
 333                                             (input_ctx.codec_ctx)->pix_fmt,
 334                                             (output_ctx.codec_ctx)->width,
 335                                             (output_ctx.codec_ctx)->height,
 336                                             (output_ctx.codec_ctx)->pix_fmt,
 337                                             rescale_method,
 338                                             NULL, NULL, NULL);
 339         if (sw_scale_ctx == NULL) {
 340                 fprintf(stderr, "cannot set up the rescaling context!\n");
 341                 ret = -EINVAL;
 342                 goto cleanup_out_buf;
 343         }
 344
 345         while (run) {
 346                 /* read packet */
 347                 ret = av_read_frame(input_ctx.format_ctx, &packet);
 348                 if (ret < 0) {
 349                         if (ret == (int)AVERROR_EOF || input_ctx.format_ctx->pb->eof_reached)
 350                                 ret = 0;
 351                         else
 352                                 fprintf(stderr, "av_read_frame failed, EOF?\n");
 353                         run = 0;
 354                         goto end_while;
 355                 }
 356
 357                 if (packet.stream_index != input_ctx.video_stream_index) {
 358                         /* that is more or less a "continue", but there is
 359                          * still the packet to free */
 360                         goto end_while;
 361                 }
 362
 363                 /* decode */
 364                 got_picture = 0;
 365                 ret = avcodec_decode_video2(input_ctx.codec_ctx, picture_raw, &got_picture, &packet);
 366                 if (ret < 0) {
 367                         fprintf(stderr, "cannot decode video\n");
 368                         run = 0;
 369                         goto end_while;
 370                 }
 371
 372                 /* if we get the complete frame */
 373                 if (got_picture) {
 374                         /* convert it to YUV */
 375                         sws_scale(sw_scale_ctx,
 376                                   (const uint8_t * const*)picture_raw->data,
 377                                   picture_raw->linesize,
 378                                   0,
 379                                   (input_ctx.codec_ctx)->height,
 380                                   picture_scaled->data,
 381                                   picture_scaled->linesize);
 382
 383                         if (output_ctx.raw_output) {
 384                                 out_picture_size = out_buf_size;
 385                         } else {
 386                                 picture_scaled->quality = (output_ctx.codec_ctx)->global_quality;
 387                                 /* TODO: switch to avcodec_encode_video2() eventually */
 388                                 out_picture_size = avcodec_encode_video(output_ctx.codec_ctx,
 389                                                                         out_buf,
 390                                                                         out_buf_size,
 391                                                                         picture_scaled);
 392                                 if (out_picture_size < 0) {
 393                                         fprintf(stderr, "cannot encode video\n");
 394                                         ret = out_picture_size;
 395                                         run = 0;
 396                                         goto end_while;
 397                                 }
 398                         }
 399
 400 #ifdef DEBUG
 401                         char filename[NAME_MAX];
 402                         FILE *file;
 403                         if (!output_ctx.raw_output)
 404                                 snprintf(filename, NAME_MAX, "out_q%03d.jpg", quality);
 405                         else
 406                                 snprintf(filename, NAME_MAX, "out.raw");
 407                         file = fopen(filename, "wb");
 408                         fwrite(out_buf, 1, out_picture_size, file);
 409                         fclose(file);
 410 #endif
 411
 412                         ret = am7xxx_send_image(dev,
 413                                                 image_format,
 414                                                 (output_ctx.codec_ctx)->width,
 415                                                 (output_ctx.codec_ctx)->height,
 416                                                 out_buf,
 417                                                 out_picture_size);
 418                         if (ret < 0) {
 419                                 perror("am7xxx_send_image");
 420                                 run = 0;
 421                                 goto end_while;
 422                         }
 423                 }
 424 end_while:
 425                 av_free_packet(&packet);
 426         }
 427
 428         sws_freeContext(sw_scale_ctx);
 429 cleanup_out_buf:
 430         av_free(out_buf);
 431 cleanup_picture_scaled:
 432         av_free(picture_scaled);
 433 cleanup_picture_raw:
 434         av_free(picture_raw);
 435
 436 cleanup_output:
 437         /* av_free is needed as well,
 438          * see http://libav.org/doxygen/master/avcodec_8h.html#a5d7440cd7ea195bd0b14f21a00ef36dd
 439          */
 440         avcodec_close(output_ctx.codec_ctx);
 441         av_free(output_ctx.codec_ctx);
 442
 443 cleanup_input:
 444         avcodec_close(input_ctx.codec_ctx);
 445         avformat_close_input(&(input_ctx.format_ctx));
 446
 447 out:
 448         return ret;
 449 }
 450
 451 #ifdef HAVE_XCB
 452 #include <xcb/xcb.h>
 453 static int x_get_screen_dimensions(const char *displayname, int *width, int *height)
 454 {
 455         int i, screen_number;
 456         xcb_connection_t *connection;
 457         const xcb_setup_t *setup;
 458         xcb_screen_iterator_t iter;
 459
 460         connection = xcb_connect(displayname, &screen_number);
 461         if (xcb_connection_has_error(connection)) {
 462                 fprintf(stderr, "Cannot open a connection to %s\n", displayname);
 463                 return -EINVAL;
 464         }
 465
 466         setup = xcb_get_setup(connection);
 467         if (setup == NULL) {
 468                 fprintf(stderr, "Cannot get setup for %s\n", displayname);
 469                 xcb_disconnect(connection);
 470                 return -EINVAL;
 471         }
 472
 473         iter = xcb_setup_roots_iterator(setup);
 474         for (i = 0; i < screen_number; ++i) {
 475                 xcb_screen_next(&iter);
 476         }
 477
 478         xcb_screen_t *screen = iter.data;
 479
 480         *width = screen->width_in_pixels;
 481         *height = screen->height_in_pixels;
 482
 483         xcb_disconnect(connection);
 484
 485         return 0;
 486 }
 487
 488 static char *get_x_screen_size(const char *input_path)
 489 {
 490         int len;
 491         int width;
 492         int height;
 493         char *screen_size;
 494         int ret;
 495
 496         ret = x_get_screen_dimensions(input_path, &width, &height);
 497         if (ret < 0) {
 498                 fprintf(stderr, "Cannot get screen dimensions for %s\n", input_path);
 499                 return NULL;
 500         }
 501
 502         len = snprintf(NULL, 0, "%dx%d", width, height);
 503
 504         screen_size = malloc((len + 1) * sizeof(char));
 505         if (screen_size == NULL) {
 506                 perror("malloc");
 507                 return NULL;
 508         }
 509
 510         len = snprintf(screen_size, len + 1, "%dx%d", width, height);
 511         if (len < 0) {
 512                 free(screen_size);
 513                 screen_size = NULL;
 514                 return NULL;
 515         }
 516         return screen_size;
 517 }
 518 #else
 519 static char *get_x_screen_size(const char *input_path)
 520 {
 521         (void) input_path;
 522         fprintf(stderr, "%s: fallback implementation\n", __func__);
 523         return strdup("vga");
 524 }
 525 #endif
 526
 527 static void unset_run(int signo)
 528 {
 529         (void) signo;
 530         run = 0;
 531 }
 532
 533 static int set_signal_handler(void (*signal_handler)(int))
 534 {
 535         struct sigaction new_action;
 536         struct sigaction old_action;
 537         int ret = 0;
 538
 539         new_action.sa_handler = signal_handler;
 540         sigemptyset(&new_action.sa_mask);
 541         new_action.sa_flags = 0;
 542
 543         ret = sigaction(SIGINT, NULL, &old_action);
 544         if (ret < 0) {
 545                 perror("sigaction on old_action");
 546                 goto out;
 547         }
 548
 549         if (old_action.sa_handler != SIG_IGN) {
 550                 ret = sigaction(SIGINT, &new_action, NULL);
 551                 if (ret < 0) {
 552                         perror("sigaction on new_action");
 553                         goto out;
 554                 }
 555         }
 556
 557 out:
 558         return ret;
 559 }
 560
 561 static void usage(char *name)
 562 {
 563         printf("usage: %s [OPTIONS]\n\n", name);
 564         printf("OPTIONS:\n");
 565         printf("\t-f <input format>\tthe input device format\n");
 566         printf("\t-i <input path>\t\tthe input path\n");
 567         printf("\t-o <options>\t\ta comma separated list of input format options\n");
 568         printf("\t\t\t\tEXAMPLE:\n");
 569         printf("\t\t\t\t\t-o draw_mouse=1,framerate=100,video_size=800x480\n");
 570         printf("\t-s <scaling method>\tthe rescaling method (see swscale.h)\n");
 571         printf("\t-u \t\t\tupscale the image if smaller than the display dimensions\n");
 572         printf("\t-F <format>\t\tthe image format to use (default is JPEG)\n");
 573         printf("\t\t\t\tSUPPORTED FORMATS:\n");
 574         printf("\t\t\t\t\t1 - JPEG\n");
 575         printf("\t\t\t\t\t2 - NV12\n");
 576         printf("\t-q <quality>\t\tquality of jpeg sent to the device, between 1 and 100\n");
 577         printf("\t-l <log level>\t\tthe verbosity level of libam7xxx output (0-5)\n");
 578         printf("\t-p <power level>\tpower level of device, between %x (off) and %x (maximum)\n", AM7XXX_POWER_OFF, AM7XXX_POWER_TURBO);
 579         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");
 580         printf("\t-h \t\t\tthis help message\n");
 581         printf("\n\nEXAMPLES OF USE:\n");
 582         printf("\t%s -f x11grab -i :0.0 -o video_size=800x480\n", name);
 583         printf("\t%s -f fbdev -i /dev/fb0\n", name);
 584         printf("\t%s -f video4linux2 -i /dev/video0 -o video_size=320x240,frame_rate=100 -u -q 90\n", name);
 585         printf("\t%s -i http://download.blender.org/peach/bigbuckbunny_movies/BigBuckBunny_640x360.m4v\n", name);
 586 }
 587
 588 int main(int argc, char *argv[])
 589 {
 590         int ret;
 591         int opt;
 592         char *subopts;
 593         char *subopts_saved;
 594         char *subopt;
 595         char *input_format_string = NULL;
 596         AVDictionary *options = NULL;
 597         char *input_path = NULL;
 598         unsigned int rescale_method = SWS_BICUBIC;
 599         unsigned int upscale = 0;
 600         unsigned int quality = 95;
 601         int log_level = AM7XXX_LOG_INFO;
 602         am7xxx_power_mode power_mode = AM7XXX_POWER_LOW;
 603         int format = AM7XXX_IMAGE_FORMAT_JPEG;
 604         am7xxx_context *ctx;
 605         am7xxx_device *dev;
 606
 607         while ((opt = getopt(argc, argv, "f:i:o:s:uF:q:l:hp:")) != -1) {
 608                 switch (opt) {
 609                 case 'f':
 610                         input_format_string = strdup(optarg);
 611                         break;
 612                 case 'i':
 613                         input_path = strdup(optarg);
 614                         break;
 615                 case 'o':
 616                         /*
 617                          * parse suboptions, the expected format is something
 618                          * like:
 619                          *   draw_mouse=1,framerate=100,video_size=800x480
 620                          */
 621                         subopts = subopts_saved = strdup(optarg);
 622                         while((subopt = strtok_r(subopts, ",", &subopts))) {
 623                                 char *subopt_name = strtok_r(subopt, "=", &subopt);
 624                                 char *subopt_value = strtok_r(NULL, "", &subopt);
 625                                 if (subopt_value == NULL) {
 626                                         fprintf(stderr, "invalid suboption: %s\n", subopt_name);
 627                                         continue;
 628                                 }
 629                                 av_dict_set(&options, subopt_name, subopt_value, 0);
 630                         }
 631                         free(subopts_saved);
 632                         break;
 633                 case 's':
 634                         rescale_method = atoi(optarg);
 635                         switch(rescale_method) {
 636                         case SWS_FAST_BILINEAR:
 637                         case SWS_BILINEAR:
 638                         case SWS_BICUBIC:
 639                         case SWS_X:
 640                         case SWS_POINT:
 641                         case SWS_AREA:
 642                         case SWS_BICUBLIN:
 643                         case SWS_GAUSS:
 644                         case SWS_SINC:
 645                         case SWS_LANCZOS:
 646                         case SWS_SPLINE:
 647                                 break;
 648                         default:
 649                                 fprintf(stderr, "Unsupported rescale method\n");
 650                                 ret = -EINVAL;
 651                                 goto out;
 652                         }
 653                         break;
 654                 case 'u':
 655                         upscale = 1;
 656                         break;
 657                 case 'F':
 658                         format = atoi(optarg);
 659                         switch(format) {
 660                         case AM7XXX_IMAGE_FORMAT_JPEG:
 661                                 fprintf(stdout, "JPEG format\n");
 662                                 break;
 663                         case AM7XXX_IMAGE_FORMAT_NV12:
 664                                 fprintf(stdout, "NV12 format\n");
 665                                 break;
 666                         default:
 667                                 fprintf(stderr, "Unsupported format\n");
 668                                 ret = -EINVAL;
 669                                 goto out;
 670                         }
 671                         break;
 672                 case 'q':
 673                         quality = atoi(optarg);
 674                         if (quality < 1 || quality > 100) {
 675                                 fprintf(stderr, "Invalid quality value, must be between 1 and 100\n");
 676                                 ret = -EINVAL;
 677                                 goto out;
 678                         }
 679                         break;
 680                 case 'l':
 681                         log_level = atoi(optarg);
 682                         if (log_level < AM7XXX_LOG_FATAL || log_level > AM7XXX_LOG_TRACE) {
 683                                 fprintf(stderr, "Unsupported log level, falling back to AM7XXX_LOG_ERROR\n");
 684                                 log_level = AM7XXX_LOG_ERROR;
 685                         }
 686                         break;
 687                 case 'h':
 688                         usage(argv[0]);
 689                         ret = 0;
 690                         goto out;
 691                         break;
 692                 case 'p':
 693                         power_mode = atoi(optarg);
 694                         switch(power_mode) {
 695                         case AM7XXX_POWER_OFF:
 696                         case AM7XXX_POWER_LOW:
 697                         case AM7XXX_POWER_MIDDLE:
 698                         case AM7XXX_POWER_HIGH:
 699                         case AM7XXX_POWER_TURBO:
 700                                 fprintf(stdout, "Power mode: %x\n", power_mode);
 701                                 break;
 702                         default:
 703                                 fprintf(stderr, "Invalid power mode value, must be between %x and %x\n", AM7XXX_POWER_OFF, AM7XXX_POWER_TURBO);
 704                                 ret = -EINVAL;
 705                                 goto out;
 706                         }
 707                         break;
 708                 default: /* '?' */
 709                         usage(argv[0]);
 710                         ret = -EINVAL;
 711                         goto out;
 712                 }
 713         }
 714
 715         if (input_path == NULL) {
 716                 fprintf(stderr, "The -i option must always be passed\n");
 717                 ret = -EINVAL;
 718                 goto out;
 719         }
 720
 721         /*
 722          * When the input format is 'x11grab' set some useful fallback options
 723          * if not supplied by the user, in particular grab full screen
 724          */
 725         if (input_format_string && strcmp(input_format_string, "x11grab") == 0) {
 726                 char *video_size;
 727
 728                 video_size = get_x_screen_size(input_path);
 729
 730                 if (!av_dict_get(options, "video_size", NULL, 0))
 731                         av_dict_set(&options, "video_size", video_size, 0);
 732
 733                 if (!av_dict_get(options, "framerate", NULL, 0))
 734                         av_dict_set(&options, "framerate", "60", 0);
 735
 736                 if (!av_dict_get(options, "draw_mouse", NULL, 0))
 737                         av_dict_set(&options, "draw_mouse",  "1", 0);
 738
 739                 free(video_size);
 740         }
 741
 742         ret = set_signal_handler(unset_run);
 743         if (ret < 0) {
 744                 perror("sigaction");
 745                 goto out;
 746         }
 747
 748         ret = am7xxx_init(&ctx);
 749         if (ret < 0) {
 750                 perror("am7xxx_init");
 751                 goto out;
 752         }
 753
 754         am7xxx_set_log_level(ctx, log_level);
 755
 756         ret = am7xxx_open_device(ctx, &dev, 0);
 757         if (ret < 0) {
 758                 perror("am7xxx_open_device");
 759                 goto cleanup;
 760         }
 761
 762         ret = am7xxx_set_power_mode(dev, power_mode);
 763         if (ret < 0) {
 764                 perror("am7xxx_set_power_mode");
 765                 goto cleanup;
 766         }
 767
 768         ret = am7xxx_play(input_format_string,
 769                           &options,
 770                           input_path,
 771                           rescale_method,
 772                           upscale,
 773                           quality,
 774                           format,
 775                           dev);
 776         if (ret < 0) {
 777                 fprintf(stderr, "am7xxx_play failed\n");
 778                 goto cleanup;
 779         }
 780
 781 cleanup:
 782         am7xxx_shutdown(ctx);
 783 out:
 784         av_dict_free(&options);
 785         free(input_path);
 786         free(input_format_string);
 787         return ret;
 788 }