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      1 /*
      2  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
      3  *
      4  *  Use of this source code is governed by a BSD-style license
      5  *  that can be found in the LICENSE file in the root of the source
      6  *  tree. An additional intellectual property rights grant can be found
      7  *  in the file PATENTS.  All contributing project authors may
      8  *  be found in the AUTHORS file in the root of the source tree.
      9  */
     10 
     11 #include <assert.h>
     12 #include <limits.h>
     13 #include <stdarg.h>
     14 #include <stdio.h>
     15 #include <stdlib.h>
     16 #include <string.h>
     17 
     18 #include "./vpx_config.h"
     19 
     20 #if CONFIG_LIBYUV
     21 #include "third_party/libyuv/include/libyuv/scale.h"
     22 #endif
     23 
     24 #include "./args.h"
     25 #include "./ivfdec.h"
     26 
     27 #include "vpx/vpx_decoder.h"
     28 #include "vpx_ports/mem_ops.h"
     29 #include "vpx_ports/vpx_timer.h"
     30 
     31 #if CONFIG_VP8_DECODER || CONFIG_VP9_DECODER
     32 #include "vpx/vp8dx.h"
     33 #endif
     34 
     35 #include "./md5_utils.h"
     36 
     37 #include "./tools_common.h"
     38 #if CONFIG_WEBM_IO
     39 #include "./webmdec.h"
     40 #endif
     41 #include "./y4menc.h"
     42 
     43 static const char *exec_name;
     44 
     45 struct VpxDecInputContext {
     46   struct VpxInputContext *vpx_input_ctx;
     47   struct WebmInputContext *webm_ctx;
     48 };
     49 
     50 static const arg_def_t looparg =
     51     ARG_DEF(NULL, "loops", 1, "Number of times to decode the file");
     52 static const arg_def_t codecarg = ARG_DEF(NULL, "codec", 1, "Codec to use");
     53 static const arg_def_t use_yv12 =
     54     ARG_DEF(NULL, "yv12", 0, "Output raw YV12 frames");
     55 static const arg_def_t use_i420 =
     56     ARG_DEF(NULL, "i420", 0, "Output raw I420 frames");
     57 static const arg_def_t flipuvarg =
     58     ARG_DEF(NULL, "flipuv", 0, "Flip the chroma planes in the output");
     59 static const arg_def_t rawvideo =
     60     ARG_DEF(NULL, "rawvideo", 0, "Output raw YUV frames");
     61 static const arg_def_t noblitarg =
     62     ARG_DEF(NULL, "noblit", 0, "Don't process the decoded frames");
     63 static const arg_def_t progressarg =
     64     ARG_DEF(NULL, "progress", 0, "Show progress after each frame decodes");
     65 static const arg_def_t limitarg =
     66     ARG_DEF(NULL, "limit", 1, "Stop decoding after n frames");
     67 static const arg_def_t skiparg =
     68     ARG_DEF(NULL, "skip", 1, "Skip the first n input frames");
     69 static const arg_def_t postprocarg =
     70     ARG_DEF(NULL, "postproc", 0, "Postprocess decoded frames");
     71 static const arg_def_t summaryarg =
     72     ARG_DEF(NULL, "summary", 0, "Show timing summary");
     73 static const arg_def_t outputfile =
     74     ARG_DEF("o", "output", 1, "Output file name pattern (see below)");
     75 static const arg_def_t threadsarg =
     76     ARG_DEF("t", "threads", 1, "Max threads to use");
     77 static const arg_def_t frameparallelarg =
     78     ARG_DEF(NULL, "frame-parallel", 0, "Frame parallel decode (ignored)");
     79 static const arg_def_t verbosearg =
     80     ARG_DEF("v", "verbose", 0, "Show version string");
     81 static const arg_def_t error_concealment =
     82     ARG_DEF(NULL, "error-concealment", 0, "Enable decoder error-concealment");
     83 static const arg_def_t scalearg =
     84     ARG_DEF("S", "scale", 0, "Scale output frames uniformly");
     85 static const arg_def_t continuearg =
     86     ARG_DEF("k", "keep-going", 0, "(debug) Continue decoding after error");
     87 static const arg_def_t fb_arg =
     88     ARG_DEF(NULL, "frame-buffers", 1, "Number of frame buffers to use");
     89 static const arg_def_t md5arg =
     90     ARG_DEF(NULL, "md5", 0, "Compute the MD5 sum of the decoded frame");
     91 #if CONFIG_VP9_HIGHBITDEPTH
     92 static const arg_def_t outbitdeptharg =
     93     ARG_DEF(NULL, "output-bit-depth", 1, "Output bit-depth for decoded frames");
     94 #endif
     95 static const arg_def_t svcdecodingarg = ARG_DEF(
     96     NULL, "svc-decode-layer", 1, "Decode SVC stream up to given spatial layer");
     97 static const arg_def_t framestatsarg =
     98     ARG_DEF(NULL, "framestats", 1, "Output per-frame stats (.csv format)");
     99 
    100 static const arg_def_t *all_args[] = {
    101   &codecarg,          &use_yv12,         &use_i420,
    102   &flipuvarg,         &rawvideo,         &noblitarg,
    103   &progressarg,       &limitarg,         &skiparg,
    104   &postprocarg,       &summaryarg,       &outputfile,
    105   &threadsarg,        &frameparallelarg, &verbosearg,
    106   &scalearg,          &fb_arg,           &md5arg,
    107   &error_concealment, &continuearg,
    108 #if CONFIG_VP9_HIGHBITDEPTH
    109   &outbitdeptharg,
    110 #endif
    111   &svcdecodingarg,    &framestatsarg,    NULL
    112 };
    113 
    114 #if CONFIG_VP8_DECODER
    115 static const arg_def_t addnoise_level =
    116     ARG_DEF(NULL, "noise-level", 1, "Enable VP8 postproc add noise");
    117 static const arg_def_t deblock =
    118     ARG_DEF(NULL, "deblock", 0, "Enable VP8 deblocking");
    119 static const arg_def_t demacroblock_level = ARG_DEF(
    120     NULL, "demacroblock-level", 1, "Enable VP8 demacroblocking, w/ level");
    121 static const arg_def_t mfqe =
    122     ARG_DEF(NULL, "mfqe", 0, "Enable multiframe quality enhancement");
    123 
    124 static const arg_def_t *vp8_pp_args[] = { &addnoise_level, &deblock,
    125                                           &demacroblock_level, &mfqe, NULL };
    126 #endif
    127 
    128 #if CONFIG_LIBYUV
    129 static INLINE int libyuv_scale(vpx_image_t *src, vpx_image_t *dst,
    130                                FilterModeEnum mode) {
    131 #if CONFIG_VP9_HIGHBITDEPTH
    132   if (src->fmt == VPX_IMG_FMT_I42016) {
    133     assert(dst->fmt == VPX_IMG_FMT_I42016);
    134     return I420Scale_16(
    135         (uint16_t *)src->planes[VPX_PLANE_Y], src->stride[VPX_PLANE_Y] / 2,
    136         (uint16_t *)src->planes[VPX_PLANE_U], src->stride[VPX_PLANE_U] / 2,
    137         (uint16_t *)src->planes[VPX_PLANE_V], src->stride[VPX_PLANE_V] / 2,
    138         src->d_w, src->d_h, (uint16_t *)dst->planes[VPX_PLANE_Y],
    139         dst->stride[VPX_PLANE_Y] / 2, (uint16_t *)dst->planes[VPX_PLANE_U],
    140         dst->stride[VPX_PLANE_U] / 2, (uint16_t *)dst->planes[VPX_PLANE_V],
    141         dst->stride[VPX_PLANE_V] / 2, dst->d_w, dst->d_h, mode);
    142   }
    143 #endif
    144   assert(src->fmt == VPX_IMG_FMT_I420);
    145   assert(dst->fmt == VPX_IMG_FMT_I420);
    146   return I420Scale(src->planes[VPX_PLANE_Y], src->stride[VPX_PLANE_Y],
    147                    src->planes[VPX_PLANE_U], src->stride[VPX_PLANE_U],
    148                    src->planes[VPX_PLANE_V], src->stride[VPX_PLANE_V], src->d_w,
    149                    src->d_h, dst->planes[VPX_PLANE_Y], dst->stride[VPX_PLANE_Y],
    150                    dst->planes[VPX_PLANE_U], dst->stride[VPX_PLANE_U],
    151                    dst->planes[VPX_PLANE_V], dst->stride[VPX_PLANE_V], dst->d_w,
    152                    dst->d_h, mode);
    153 }
    154 #endif
    155 
    156 void usage_exit(void) {
    157   int i;
    158 
    159   fprintf(stderr,
    160           "Usage: %s <options> filename\n\n"
    161           "Options:\n",
    162           exec_name);
    163   arg_show_usage(stderr, all_args);
    164 #if CONFIG_VP8_DECODER
    165   fprintf(stderr, "\nVP8 Postprocessing Options:\n");
    166   arg_show_usage(stderr, vp8_pp_args);
    167 #endif
    168   fprintf(stderr,
    169           "\nOutput File Patterns:\n\n"
    170           "  The -o argument specifies the name of the file(s) to "
    171           "write to. If the\n  argument does not include any escape "
    172           "characters, the output will be\n  written to a single file. "
    173           "Otherwise, the filename will be calculated by\n  expanding "
    174           "the following escape characters:\n");
    175   fprintf(stderr,
    176           "\n\t%%w   - Frame width"
    177           "\n\t%%h   - Frame height"
    178           "\n\t%%<n> - Frame number, zero padded to <n> places (1..9)"
    179           "\n\n  Pattern arguments are only supported in conjunction "
    180           "with the --yv12 and\n  --i420 options. If the -o option is "
    181           "not specified, the output will be\n  directed to stdout.\n");
    182   fprintf(stderr, "\nIncluded decoders:\n\n");
    183 
    184   for (i = 0; i < get_vpx_decoder_count(); ++i) {
    185     const VpxInterface *const decoder = get_vpx_decoder_by_index(i);
    186     fprintf(stderr, "    %-6s - %s\n", decoder->name,
    187             vpx_codec_iface_name(decoder->codec_interface()));
    188   }
    189 
    190   exit(EXIT_FAILURE);
    191 }
    192 
    193 static int raw_read_frame(FILE *infile, uint8_t **buffer, size_t *bytes_read,
    194                           size_t *buffer_size) {
    195   char raw_hdr[RAW_FRAME_HDR_SZ];
    196   size_t frame_size = 0;
    197 
    198   if (fread(raw_hdr, RAW_FRAME_HDR_SZ, 1, infile) != 1) {
    199     if (!feof(infile)) warn("Failed to read RAW frame size\n");
    200   } else {
    201     const size_t kCorruptFrameThreshold = 256 * 1024 * 1024;
    202     const size_t kFrameTooSmallThreshold = 256 * 1024;
    203     frame_size = mem_get_le32(raw_hdr);
    204 
    205     if (frame_size > kCorruptFrameThreshold) {
    206       warn("Read invalid frame size (%u)\n", (unsigned int)frame_size);
    207       frame_size = 0;
    208     }
    209 
    210     if (frame_size < kFrameTooSmallThreshold) {
    211       warn("Warning: Read invalid frame size (%u) - not a raw file?\n",
    212            (unsigned int)frame_size);
    213     }
    214 
    215     if (frame_size > *buffer_size) {
    216       uint8_t *new_buf = realloc(*buffer, 2 * frame_size);
    217       if (new_buf) {
    218         *buffer = new_buf;
    219         *buffer_size = 2 * frame_size;
    220       } else {
    221         warn("Failed to allocate compressed data buffer\n");
    222         frame_size = 0;
    223       }
    224     }
    225   }
    226 
    227   if (!feof(infile)) {
    228     if (fread(*buffer, 1, frame_size, infile) != frame_size) {
    229       warn("Failed to read full frame\n");
    230       return 1;
    231     }
    232     *bytes_read = frame_size;
    233   }
    234 
    235   return 0;
    236 }
    237 
    238 static int read_frame(struct VpxDecInputContext *input, uint8_t **buf,
    239                       size_t *bytes_in_buffer, size_t *buffer_size) {
    240   switch (input->vpx_input_ctx->file_type) {
    241 #if CONFIG_WEBM_IO
    242     case FILE_TYPE_WEBM:
    243       return webm_read_frame(input->webm_ctx, buf, bytes_in_buffer);
    244 #endif
    245     case FILE_TYPE_RAW:
    246       return raw_read_frame(input->vpx_input_ctx->file, buf, bytes_in_buffer,
    247                             buffer_size);
    248     case FILE_TYPE_IVF:
    249       return ivf_read_frame(input->vpx_input_ctx->file, buf, bytes_in_buffer,
    250                             buffer_size);
    251     default: return 1;
    252   }
    253 }
    254 
    255 static void update_image_md5(const vpx_image_t *img, const int planes[3],
    256                              MD5Context *md5) {
    257   int i, y;
    258 
    259   for (i = 0; i < 3; ++i) {
    260     const int plane = planes[i];
    261     const unsigned char *buf = img->planes[plane];
    262     const int stride = img->stride[plane];
    263     const int w = vpx_img_plane_width(img, plane) *
    264                   ((img->fmt & VPX_IMG_FMT_HIGHBITDEPTH) ? 2 : 1);
    265     const int h = vpx_img_plane_height(img, plane);
    266 
    267     for (y = 0; y < h; ++y) {
    268       MD5Update(md5, buf, w);
    269       buf += stride;
    270     }
    271   }
    272 }
    273 
    274 static void write_image_file(const vpx_image_t *img, const int planes[3],
    275                              FILE *file) {
    276   int i, y;
    277 #if CONFIG_VP9_HIGHBITDEPTH
    278   const int bytes_per_sample = ((img->fmt & VPX_IMG_FMT_HIGHBITDEPTH) ? 2 : 1);
    279 #else
    280   const int bytes_per_sample = 1;
    281 #endif
    282 
    283   for (i = 0; i < 3; ++i) {
    284     const int plane = planes[i];
    285     const unsigned char *buf = img->planes[plane];
    286     const int stride = img->stride[plane];
    287     const int w = vpx_img_plane_width(img, plane);
    288     const int h = vpx_img_plane_height(img, plane);
    289 
    290     for (y = 0; y < h; ++y) {
    291       fwrite(buf, bytes_per_sample, w, file);
    292       buf += stride;
    293     }
    294   }
    295 }
    296 
    297 static int file_is_raw(struct VpxInputContext *input) {
    298   uint8_t buf[32];
    299   int is_raw = 0;
    300   vpx_codec_stream_info_t si;
    301 
    302   si.sz = sizeof(si);
    303 
    304   if (fread(buf, 1, 32, input->file) == 32) {
    305     int i;
    306 
    307     if (mem_get_le32(buf) < 256 * 1024 * 1024) {
    308       for (i = 0; i < get_vpx_decoder_count(); ++i) {
    309         const VpxInterface *const decoder = get_vpx_decoder_by_index(i);
    310         if (!vpx_codec_peek_stream_info(decoder->codec_interface(), buf + 4,
    311                                         32 - 4, &si)) {
    312           is_raw = 1;
    313           input->fourcc = decoder->fourcc;
    314           input->width = si.w;
    315           input->height = si.h;
    316           input->framerate.numerator = 30;
    317           input->framerate.denominator = 1;
    318           break;
    319         }
    320       }
    321     }
    322   }
    323 
    324   rewind(input->file);
    325   return is_raw;
    326 }
    327 
    328 static void show_progress(int frame_in, int frame_out, uint64_t dx_time) {
    329   fprintf(stderr,
    330           "%d decoded frames/%d showed frames in %" PRId64 " us (%.2f fps)\r",
    331           frame_in, frame_out, dx_time,
    332           (double)frame_out * 1000000.0 / (double)dx_time);
    333 }
    334 
    335 struct ExternalFrameBuffer {
    336   uint8_t *data;
    337   size_t size;
    338   int in_use;
    339 };
    340 
    341 struct ExternalFrameBufferList {
    342   int num_external_frame_buffers;
    343   struct ExternalFrameBuffer *ext_fb;
    344 };
    345 
    346 // Callback used by libvpx to request an external frame buffer. |cb_priv|
    347 // Application private data passed into the set function. |min_size| is the
    348 // minimum size in bytes needed to decode the next frame. |fb| pointer to the
    349 // frame buffer.
    350 static int get_vp9_frame_buffer(void *cb_priv, size_t min_size,
    351                                 vpx_codec_frame_buffer_t *fb) {
    352   int i;
    353   struct ExternalFrameBufferList *const ext_fb_list =
    354       (struct ExternalFrameBufferList *)cb_priv;
    355   if (ext_fb_list == NULL) return -1;
    356 
    357   // Find a free frame buffer.
    358   for (i = 0; i < ext_fb_list->num_external_frame_buffers; ++i) {
    359     if (!ext_fb_list->ext_fb[i].in_use) break;
    360   }
    361 
    362   if (i == ext_fb_list->num_external_frame_buffers) return -1;
    363 
    364   if (ext_fb_list->ext_fb[i].size < min_size) {
    365     free(ext_fb_list->ext_fb[i].data);
    366     ext_fb_list->ext_fb[i].data = (uint8_t *)calloc(min_size, sizeof(uint8_t));
    367     if (!ext_fb_list->ext_fb[i].data) return -1;
    368 
    369     ext_fb_list->ext_fb[i].size = min_size;
    370   }
    371 
    372   fb->data = ext_fb_list->ext_fb[i].data;
    373   fb->size = ext_fb_list->ext_fb[i].size;
    374   ext_fb_list->ext_fb[i].in_use = 1;
    375 
    376   // Set the frame buffer's private data to point at the external frame buffer.
    377   fb->priv = &ext_fb_list->ext_fb[i];
    378   return 0;
    379 }
    380 
    381 // Callback used by libvpx when there are no references to the frame buffer.
    382 // |cb_priv| user private data passed into the set function. |fb| pointer
    383 // to the frame buffer.
    384 static int release_vp9_frame_buffer(void *cb_priv,
    385                                     vpx_codec_frame_buffer_t *fb) {
    386   struct ExternalFrameBuffer *const ext_fb =
    387       (struct ExternalFrameBuffer *)fb->priv;
    388   (void)cb_priv;
    389   ext_fb->in_use = 0;
    390   return 0;
    391 }
    392 
    393 static void generate_filename(const char *pattern, char *out, size_t q_len,
    394                               unsigned int d_w, unsigned int d_h,
    395                               unsigned int frame_in) {
    396   const char *p = pattern;
    397   char *q = out;
    398 
    399   do {
    400     char *next_pat = strchr(p, '%');
    401 
    402     if (p == next_pat) {
    403       size_t pat_len;
    404 
    405       /* parse the pattern */
    406       q[q_len - 1] = '\0';
    407       switch (p[1]) {
    408         case 'w': snprintf(q, q_len - 1, "%d", d_w); break;
    409         case 'h': snprintf(q, q_len - 1, "%d", d_h); break;
    410         case '1': snprintf(q, q_len - 1, "%d", frame_in); break;
    411         case '2': snprintf(q, q_len - 1, "%02d", frame_in); break;
    412         case '3': snprintf(q, q_len - 1, "%03d", frame_in); break;
    413         case '4': snprintf(q, q_len - 1, "%04d", frame_in); break;
    414         case '5': snprintf(q, q_len - 1, "%05d", frame_in); break;
    415         case '6': snprintf(q, q_len - 1, "%06d", frame_in); break;
    416         case '7': snprintf(q, q_len - 1, "%07d", frame_in); break;
    417         case '8': snprintf(q, q_len - 1, "%08d", frame_in); break;
    418         case '9': snprintf(q, q_len - 1, "%09d", frame_in); break;
    419         default: die("Unrecognized pattern %%%c\n", p[1]); break;
    420       }
    421 
    422       pat_len = strlen(q);
    423       if (pat_len >= q_len - 1) die("Output filename too long.\n");
    424       q += pat_len;
    425       p += 2;
    426       q_len -= pat_len;
    427     } else {
    428       size_t copy_len;
    429 
    430       /* copy the next segment */
    431       if (!next_pat)
    432         copy_len = strlen(p);
    433       else
    434         copy_len = next_pat - p;
    435 
    436       if (copy_len >= q_len - 1) die("Output filename too long.\n");
    437 
    438       memcpy(q, p, copy_len);
    439       q[copy_len] = '\0';
    440       q += copy_len;
    441       p += copy_len;
    442       q_len -= copy_len;
    443     }
    444   } while (*p);
    445 }
    446 
    447 static int is_single_file(const char *outfile_pattern) {
    448   const char *p = outfile_pattern;
    449 
    450   do {
    451     p = strchr(p, '%');
    452     if (p && p[1] >= '1' && p[1] <= '9')
    453       return 0;  // pattern contains sequence number, so it's not unique
    454     if (p) p++;
    455   } while (p);
    456 
    457   return 1;
    458 }
    459 
    460 static void print_md5(unsigned char digest[16], const char *filename) {
    461   int i;
    462 
    463   for (i = 0; i < 16; ++i) printf("%02x", digest[i]);
    464   printf("  %s\n", filename);
    465 }
    466 
    467 static FILE *open_outfile(const char *name) {
    468   if (strcmp("-", name) == 0) {
    469     set_binary_mode(stdout);
    470     return stdout;
    471   } else {
    472     FILE *file = fopen(name, "wb");
    473     if (!file) fatal("Failed to open output file '%s'", name);
    474     return file;
    475   }
    476 }
    477 
    478 #if CONFIG_VP9_HIGHBITDEPTH
    479 static int img_shifted_realloc_required(const vpx_image_t *img,
    480                                         const vpx_image_t *shifted,
    481                                         vpx_img_fmt_t required_fmt) {
    482   return img->d_w != shifted->d_w || img->d_h != shifted->d_h ||
    483          required_fmt != shifted->fmt;
    484 }
    485 #endif
    486 
    487 static int main_loop(int argc, const char **argv_) {
    488   vpx_codec_ctx_t decoder;
    489   char *fn = NULL;
    490   int i;
    491   int ret = EXIT_FAILURE;
    492   uint8_t *buf = NULL;
    493   size_t bytes_in_buffer = 0, buffer_size = 0;
    494   FILE *infile;
    495   int frame_in = 0, frame_out = 0, flipuv = 0, noblit = 0;
    496   int do_md5 = 0, progress = 0;
    497   int stop_after = 0, postproc = 0, summary = 0, quiet = 1;
    498   int arg_skip = 0;
    499   int ec_enabled = 0;
    500   int keep_going = 0;
    501   const VpxInterface *interface = NULL;
    502   const VpxInterface *fourcc_interface = NULL;
    503   uint64_t dx_time = 0;
    504   struct arg arg;
    505   char **argv, **argi, **argj;
    506 
    507   int single_file;
    508   int use_y4m = 1;
    509   int opt_yv12 = 0;
    510   int opt_i420 = 0;
    511   vpx_codec_dec_cfg_t cfg = { 0, 0, 0 };
    512 #if CONFIG_VP9_HIGHBITDEPTH
    513   unsigned int output_bit_depth = 0;
    514 #endif
    515   int svc_decoding = 0;
    516   int svc_spatial_layer = 0;
    517 #if CONFIG_VP8_DECODER
    518   vp8_postproc_cfg_t vp8_pp_cfg = { 0, 0, 0 };
    519 #endif
    520   int frames_corrupted = 0;
    521   int dec_flags = 0;
    522   int do_scale = 0;
    523   vpx_image_t *scaled_img = NULL;
    524 #if CONFIG_VP9_HIGHBITDEPTH
    525   vpx_image_t *img_shifted = NULL;
    526 #endif
    527   int frame_avail, got_data, flush_decoder = 0;
    528   int num_external_frame_buffers = 0;
    529   struct ExternalFrameBufferList ext_fb_list = { 0, NULL };
    530 
    531   const char *outfile_pattern = NULL;
    532   char outfile_name[PATH_MAX] = { 0 };
    533   FILE *outfile = NULL;
    534 
    535   FILE *framestats_file = NULL;
    536 
    537   MD5Context md5_ctx;
    538   unsigned char md5_digest[16];
    539 
    540   struct VpxDecInputContext input = { NULL, NULL };
    541   struct VpxInputContext vpx_input_ctx;
    542 #if CONFIG_WEBM_IO
    543   struct WebmInputContext webm_ctx;
    544   memset(&(webm_ctx), 0, sizeof(webm_ctx));
    545   input.webm_ctx = &webm_ctx;
    546 #endif
    547   input.vpx_input_ctx = &vpx_input_ctx;
    548 
    549   /* Parse command line */
    550   exec_name = argv_[0];
    551   argv = argv_dup(argc - 1, argv_ + 1);
    552 
    553   for (argi = argj = argv; (*argj = *argi); argi += arg.argv_step) {
    554     memset(&arg, 0, sizeof(arg));
    555     arg.argv_step = 1;
    556 
    557     if (arg_match(&arg, &codecarg, argi)) {
    558       interface = get_vpx_decoder_by_name(arg.val);
    559       if (!interface)
    560         die("Error: Unrecognized argument (%s) to --codec\n", arg.val);
    561     } else if (arg_match(&arg, &looparg, argi)) {
    562       // no-op
    563     } else if (arg_match(&arg, &outputfile, argi))
    564       outfile_pattern = arg.val;
    565     else if (arg_match(&arg, &use_yv12, argi)) {
    566       use_y4m = 0;
    567       flipuv = 1;
    568       opt_yv12 = 1;
    569     } else if (arg_match(&arg, &use_i420, argi)) {
    570       use_y4m = 0;
    571       flipuv = 0;
    572       opt_i420 = 1;
    573     } else if (arg_match(&arg, &rawvideo, argi)) {
    574       use_y4m = 0;
    575     } else if (arg_match(&arg, &flipuvarg, argi))
    576       flipuv = 1;
    577     else if (arg_match(&arg, &noblitarg, argi))
    578       noblit = 1;
    579     else if (arg_match(&arg, &progressarg, argi))
    580       progress = 1;
    581     else if (arg_match(&arg, &limitarg, argi))
    582       stop_after = arg_parse_uint(&arg);
    583     else if (arg_match(&arg, &skiparg, argi))
    584       arg_skip = arg_parse_uint(&arg);
    585     else if (arg_match(&arg, &postprocarg, argi))
    586       postproc = 1;
    587     else if (arg_match(&arg, &md5arg, argi))
    588       do_md5 = 1;
    589     else if (arg_match(&arg, &summaryarg, argi))
    590       summary = 1;
    591     else if (arg_match(&arg, &threadsarg, argi))
    592       cfg.threads = arg_parse_uint(&arg);
    593 #if CONFIG_VP9_DECODER
    594     else if (arg_match(&arg, &frameparallelarg, argi)) {
    595       /* ignored for compatibility */
    596     }
    597 #endif
    598     else if (arg_match(&arg, &verbosearg, argi))
    599       quiet = 0;
    600     else if (arg_match(&arg, &scalearg, argi))
    601       do_scale = 1;
    602     else if (arg_match(&arg, &fb_arg, argi))
    603       num_external_frame_buffers = arg_parse_uint(&arg);
    604     else if (arg_match(&arg, &continuearg, argi))
    605       keep_going = 1;
    606 #if CONFIG_VP9_HIGHBITDEPTH
    607     else if (arg_match(&arg, &outbitdeptharg, argi)) {
    608       output_bit_depth = arg_parse_uint(&arg);
    609     }
    610 #endif
    611     else if (arg_match(&arg, &svcdecodingarg, argi)) {
    612       svc_decoding = 1;
    613       svc_spatial_layer = arg_parse_uint(&arg);
    614     } else if (arg_match(&arg, &framestatsarg, argi)) {
    615       framestats_file = fopen(arg.val, "w");
    616       if (!framestats_file) {
    617         die("Error: Could not open --framestats file (%s) for writing.\n",
    618             arg.val);
    619       }
    620     }
    621 #if CONFIG_VP8_DECODER
    622     else if (arg_match(&arg, &addnoise_level, argi)) {
    623       postproc = 1;
    624       vp8_pp_cfg.post_proc_flag |= VP8_ADDNOISE;
    625       vp8_pp_cfg.noise_level = arg_parse_uint(&arg);
    626     } else if (arg_match(&arg, &demacroblock_level, argi)) {
    627       postproc = 1;
    628       vp8_pp_cfg.post_proc_flag |= VP8_DEMACROBLOCK;
    629       vp8_pp_cfg.deblocking_level = arg_parse_uint(&arg);
    630     } else if (arg_match(&arg, &deblock, argi)) {
    631       postproc = 1;
    632       vp8_pp_cfg.post_proc_flag |= VP8_DEBLOCK;
    633     } else if (arg_match(&arg, &mfqe, argi)) {
    634       postproc = 1;
    635       vp8_pp_cfg.post_proc_flag |= VP8_MFQE;
    636     } else if (arg_match(&arg, &error_concealment, argi)) {
    637       ec_enabled = 1;
    638     }
    639 #endif  // CONFIG_VP8_DECODER
    640     else
    641       argj++;
    642   }
    643 
    644   /* Check for unrecognized options */
    645   for (argi = argv; *argi; argi++)
    646     if (argi[0][0] == '-' && strlen(argi[0]) > 1)
    647       die("Error: Unrecognized option %s\n", *argi);
    648 
    649   /* Handle non-option arguments */
    650   fn = argv[0];
    651 
    652   if (!fn) {
    653     free(argv);
    654     usage_exit();
    655   }
    656   /* Open file */
    657   infile = strcmp(fn, "-") ? fopen(fn, "rb") : set_binary_mode(stdin);
    658 
    659   if (!infile) {
    660     fatal("Failed to open input file '%s'", strcmp(fn, "-") ? fn : "stdin");
    661   }
    662 #if CONFIG_OS_SUPPORT
    663   /* Make sure we don't dump to the terminal, unless forced to with -o - */
    664   if (!outfile_pattern && isatty(fileno(stdout)) && !do_md5 && !noblit) {
    665     fprintf(stderr,
    666             "Not dumping raw video to your terminal. Use '-o -' to "
    667             "override.\n");
    668     return EXIT_FAILURE;
    669   }
    670 #endif
    671   input.vpx_input_ctx->file = infile;
    672   if (file_is_ivf(input.vpx_input_ctx))
    673     input.vpx_input_ctx->file_type = FILE_TYPE_IVF;
    674 #if CONFIG_WEBM_IO
    675   else if (file_is_webm(input.webm_ctx, input.vpx_input_ctx))
    676     input.vpx_input_ctx->file_type = FILE_TYPE_WEBM;
    677 #endif
    678   else if (file_is_raw(input.vpx_input_ctx))
    679     input.vpx_input_ctx->file_type = FILE_TYPE_RAW;
    680   else {
    681     fprintf(stderr, "Unrecognized input file type.\n");
    682 #if !CONFIG_WEBM_IO
    683     fprintf(stderr, "vpxdec was built without WebM container support.\n");
    684 #endif
    685     return EXIT_FAILURE;
    686   }
    687 
    688   outfile_pattern = outfile_pattern ? outfile_pattern : "-";
    689   single_file = is_single_file(outfile_pattern);
    690 
    691   if (!noblit && single_file) {
    692     generate_filename(outfile_pattern, outfile_name, PATH_MAX,
    693                       vpx_input_ctx.width, vpx_input_ctx.height, 0);
    694     if (do_md5)
    695       MD5Init(&md5_ctx);
    696     else
    697       outfile = open_outfile(outfile_name);
    698   }
    699 
    700   if (use_y4m && !noblit) {
    701     if (!single_file) {
    702       fprintf(stderr,
    703               "YUV4MPEG2 not supported with output patterns,"
    704               " try --i420 or --yv12 or --rawvideo.\n");
    705       return EXIT_FAILURE;
    706     }
    707 
    708 #if CONFIG_WEBM_IO
    709     if (vpx_input_ctx.file_type == FILE_TYPE_WEBM) {
    710       if (webm_guess_framerate(input.webm_ctx, input.vpx_input_ctx)) {
    711         fprintf(stderr,
    712                 "Failed to guess framerate -- error parsing "
    713                 "webm file?\n");
    714         return EXIT_FAILURE;
    715       }
    716     }
    717 #endif
    718   }
    719 
    720   fourcc_interface = get_vpx_decoder_by_fourcc(vpx_input_ctx.fourcc);
    721   if (interface && fourcc_interface && interface != fourcc_interface)
    722     warn("Header indicates codec: %s\n", fourcc_interface->name);
    723   else
    724     interface = fourcc_interface;
    725 
    726   if (!interface) interface = get_vpx_decoder_by_index(0);
    727 
    728   dec_flags = (postproc ? VPX_CODEC_USE_POSTPROC : 0) |
    729               (ec_enabled ? VPX_CODEC_USE_ERROR_CONCEALMENT : 0);
    730   if (vpx_codec_dec_init(&decoder, interface->codec_interface(), &cfg,
    731                          dec_flags)) {
    732     fprintf(stderr, "Failed to initialize decoder: %s\n",
    733             vpx_codec_error(&decoder));
    734     goto fail2;
    735   }
    736   if (svc_decoding) {
    737     if (vpx_codec_control(&decoder, VP9_DECODE_SVC_SPATIAL_LAYER,
    738                           svc_spatial_layer)) {
    739       fprintf(stderr, "Failed to set spatial layer for svc decode: %s\n",
    740               vpx_codec_error(&decoder));
    741       goto fail;
    742     }
    743   }
    744   if (!quiet) fprintf(stderr, "%s\n", decoder.name);
    745 
    746 #if CONFIG_VP8_DECODER
    747   if (vp8_pp_cfg.post_proc_flag &&
    748       vpx_codec_control(&decoder, VP8_SET_POSTPROC, &vp8_pp_cfg)) {
    749     fprintf(stderr, "Failed to configure postproc: %s\n",
    750             vpx_codec_error(&decoder));
    751     goto fail;
    752   }
    753 #endif
    754 
    755   if (arg_skip) fprintf(stderr, "Skipping first %d frames.\n", arg_skip);
    756   while (arg_skip) {
    757     if (read_frame(&input, &buf, &bytes_in_buffer, &buffer_size)) break;
    758     arg_skip--;
    759   }
    760 
    761   if (num_external_frame_buffers > 0) {
    762     ext_fb_list.num_external_frame_buffers = num_external_frame_buffers;
    763     ext_fb_list.ext_fb = (struct ExternalFrameBuffer *)calloc(
    764         num_external_frame_buffers, sizeof(*ext_fb_list.ext_fb));
    765     if (vpx_codec_set_frame_buffer_functions(&decoder, get_vp9_frame_buffer,
    766                                              release_vp9_frame_buffer,
    767                                              &ext_fb_list)) {
    768       fprintf(stderr, "Failed to configure external frame buffers: %s\n",
    769               vpx_codec_error(&decoder));
    770       goto fail;
    771     }
    772   }
    773 
    774   frame_avail = 1;
    775   got_data = 0;
    776 
    777   if (framestats_file) fprintf(framestats_file, "bytes,qp\n");
    778 
    779   /* Decode file */
    780   while (frame_avail || got_data) {
    781     vpx_codec_iter_t iter = NULL;
    782     vpx_image_t *img;
    783     struct vpx_usec_timer timer;
    784     int corrupted = 0;
    785 
    786     frame_avail = 0;
    787     if (!stop_after || frame_in < stop_after) {
    788       if (!read_frame(&input, &buf, &bytes_in_buffer, &buffer_size)) {
    789         frame_avail = 1;
    790         frame_in++;
    791 
    792         vpx_usec_timer_start(&timer);
    793 
    794         if (vpx_codec_decode(&decoder, buf, (unsigned int)bytes_in_buffer, NULL,
    795                              0)) {
    796           const char *detail = vpx_codec_error_detail(&decoder);
    797           warn("Failed to decode frame %d: %s", frame_in,
    798                vpx_codec_error(&decoder));
    799           if (detail) warn("Additional information: %s", detail);
    800           corrupted = 1;
    801           if (!keep_going) goto fail;
    802         }
    803 
    804         if (framestats_file) {
    805           int qp;
    806           if (vpx_codec_control(&decoder, VPXD_GET_LAST_QUANTIZER, &qp)) {
    807             warn("Failed VPXD_GET_LAST_QUANTIZER: %s",
    808                  vpx_codec_error(&decoder));
    809             if (!keep_going) goto fail;
    810           }
    811           fprintf(framestats_file, "%d,%d\n", (int)bytes_in_buffer, qp);
    812         }
    813 
    814         vpx_usec_timer_mark(&timer);
    815         dx_time += vpx_usec_timer_elapsed(&timer);
    816       } else {
    817         flush_decoder = 1;
    818       }
    819     } else {
    820       flush_decoder = 1;
    821     }
    822 
    823     vpx_usec_timer_start(&timer);
    824 
    825     if (flush_decoder) {
    826       // Flush the decoder in frame parallel decode.
    827       if (vpx_codec_decode(&decoder, NULL, 0, NULL, 0)) {
    828         warn("Failed to flush decoder: %s", vpx_codec_error(&decoder));
    829         corrupted = 1;
    830         if (!keep_going) goto fail;
    831       }
    832     }
    833 
    834     got_data = 0;
    835     if ((img = vpx_codec_get_frame(&decoder, &iter))) {
    836       ++frame_out;
    837       got_data = 1;
    838     }
    839 
    840     vpx_usec_timer_mark(&timer);
    841     dx_time += (unsigned int)vpx_usec_timer_elapsed(&timer);
    842 
    843     if (!corrupted &&
    844         vpx_codec_control(&decoder, VP8D_GET_FRAME_CORRUPTED, &corrupted)) {
    845       warn("Failed VP8_GET_FRAME_CORRUPTED: %s", vpx_codec_error(&decoder));
    846       if (!keep_going) goto fail;
    847     }
    848     frames_corrupted += corrupted;
    849 
    850     if (progress) show_progress(frame_in, frame_out, dx_time);
    851 
    852     if (!noblit && img) {
    853       const int PLANES_YUV[] = { VPX_PLANE_Y, VPX_PLANE_U, VPX_PLANE_V };
    854       const int PLANES_YVU[] = { VPX_PLANE_Y, VPX_PLANE_V, VPX_PLANE_U };
    855       const int *planes = flipuv ? PLANES_YVU : PLANES_YUV;
    856 
    857       if (do_scale) {
    858         if (frame_out == 1) {
    859           // If the output frames are to be scaled to a fixed display size then
    860           // use the width and height specified in the container. If either of
    861           // these is set to 0, use the display size set in the first frame
    862           // header. If that is unavailable, use the raw decoded size of the
    863           // first decoded frame.
    864           int render_width = vpx_input_ctx.width;
    865           int render_height = vpx_input_ctx.height;
    866           if (!render_width || !render_height) {
    867             int render_size[2];
    868             if (vpx_codec_control(&decoder, VP9D_GET_DISPLAY_SIZE,
    869                                   render_size)) {
    870               // As last resort use size of first frame as display size.
    871               render_width = img->d_w;
    872               render_height = img->d_h;
    873             } else {
    874               render_width = render_size[0];
    875               render_height = render_size[1];
    876             }
    877           }
    878           scaled_img =
    879               vpx_img_alloc(NULL, img->fmt, render_width, render_height, 16);
    880           scaled_img->bit_depth = img->bit_depth;
    881         }
    882 
    883         if (img->d_w != scaled_img->d_w || img->d_h != scaled_img->d_h) {
    884 #if CONFIG_LIBYUV
    885           libyuv_scale(img, scaled_img, kFilterBox);
    886           img = scaled_img;
    887 #else
    888           fprintf(stderr,
    889                   "Failed  to scale output frame: %s.\n"
    890                   "Scaling is disabled in this configuration. "
    891                   "To enable scaling, configure with --enable-libyuv\n",
    892                   vpx_codec_error(&decoder));
    893           goto fail;
    894 #endif
    895         }
    896       }
    897 #if CONFIG_VP9_HIGHBITDEPTH
    898       // Default to codec bit depth if output bit depth not set
    899       if (!output_bit_depth && single_file && !do_md5) {
    900         output_bit_depth = img->bit_depth;
    901       }
    902       // Shift up or down if necessary
    903       if (output_bit_depth != 0 && output_bit_depth != img->bit_depth) {
    904         const vpx_img_fmt_t shifted_fmt =
    905             output_bit_depth == 8
    906                 ? img->fmt ^ (img->fmt & VPX_IMG_FMT_HIGHBITDEPTH)
    907                 : img->fmt | VPX_IMG_FMT_HIGHBITDEPTH;
    908         if (img_shifted &&
    909             img_shifted_realloc_required(img, img_shifted, shifted_fmt)) {
    910           vpx_img_free(img_shifted);
    911           img_shifted = NULL;
    912         }
    913         if (!img_shifted) {
    914           img_shifted =
    915               vpx_img_alloc(NULL, shifted_fmt, img->d_w, img->d_h, 16);
    916           img_shifted->bit_depth = output_bit_depth;
    917         }
    918         if (output_bit_depth > img->bit_depth) {
    919           vpx_img_upshift(img_shifted, img, output_bit_depth - img->bit_depth);
    920         } else {
    921           vpx_img_downshift(img_shifted, img,
    922                             img->bit_depth - output_bit_depth);
    923         }
    924         img = img_shifted;
    925       }
    926 #endif
    927 
    928       if (single_file) {
    929         if (use_y4m) {
    930           char buf[Y4M_BUFFER_SIZE] = { 0 };
    931           size_t len = 0;
    932           if (img->fmt == VPX_IMG_FMT_I440 || img->fmt == VPX_IMG_FMT_I44016) {
    933             fprintf(stderr, "Cannot produce y4m output for 440 sampling.\n");
    934             goto fail;
    935           }
    936           if (frame_out == 1) {
    937             // Y4M file header
    938             len = y4m_write_file_header(
    939                 buf, sizeof(buf), vpx_input_ctx.width, vpx_input_ctx.height,
    940                 &vpx_input_ctx.framerate, img->fmt, img->bit_depth);
    941             if (do_md5) {
    942               MD5Update(&md5_ctx, (md5byte *)buf, (unsigned int)len);
    943             } else {
    944               fputs(buf, outfile);
    945             }
    946           }
    947 
    948           // Y4M frame header
    949           len = y4m_write_frame_header(buf, sizeof(buf));
    950           if (do_md5) {
    951             MD5Update(&md5_ctx, (md5byte *)buf, (unsigned int)len);
    952           } else {
    953             fputs(buf, outfile);
    954           }
    955         } else {
    956           if (frame_out == 1) {
    957             // Check if --yv12 or --i420 options are consistent with the
    958             // bit-stream decoded
    959             if (opt_i420) {
    960               if (img->fmt != VPX_IMG_FMT_I420 &&
    961                   img->fmt != VPX_IMG_FMT_I42016) {
    962                 fprintf(stderr, "Cannot produce i420 output for bit-stream.\n");
    963                 goto fail;
    964               }
    965             }
    966             if (opt_yv12) {
    967               if ((img->fmt != VPX_IMG_FMT_I420 &&
    968                    img->fmt != VPX_IMG_FMT_YV12) ||
    969                   img->bit_depth != 8) {
    970                 fprintf(stderr, "Cannot produce yv12 output for bit-stream.\n");
    971                 goto fail;
    972               }
    973             }
    974           }
    975         }
    976 
    977         if (do_md5) {
    978           update_image_md5(img, planes, &md5_ctx);
    979         } else {
    980           if (!corrupted) write_image_file(img, planes, outfile);
    981         }
    982       } else {
    983         generate_filename(outfile_pattern, outfile_name, PATH_MAX, img->d_w,
    984                           img->d_h, frame_in);
    985         if (do_md5) {
    986           MD5Init(&md5_ctx);
    987           update_image_md5(img, planes, &md5_ctx);
    988           MD5Final(md5_digest, &md5_ctx);
    989           print_md5(md5_digest, outfile_name);
    990         } else {
    991           outfile = open_outfile(outfile_name);
    992           write_image_file(img, planes, outfile);
    993           fclose(outfile);
    994         }
    995       }
    996     }
    997   }
    998 
    999   if (summary || progress) {
   1000     show_progress(frame_in, frame_out, dx_time);
   1001     fprintf(stderr, "\n");
   1002   }
   1003 
   1004   if (frames_corrupted) {
   1005     fprintf(stderr, "WARNING: %d frames corrupted.\n", frames_corrupted);
   1006   } else {
   1007     ret = EXIT_SUCCESS;
   1008   }
   1009 
   1010 fail:
   1011 
   1012   if (vpx_codec_destroy(&decoder)) {
   1013     fprintf(stderr, "Failed to destroy decoder: %s\n",
   1014             vpx_codec_error(&decoder));
   1015   }
   1016 
   1017 fail2:
   1018 
   1019   if (!noblit && single_file) {
   1020     if (do_md5) {
   1021       MD5Final(md5_digest, &md5_ctx);
   1022       print_md5(md5_digest, outfile_name);
   1023     } else {
   1024       fclose(outfile);
   1025     }
   1026   }
   1027 
   1028 #if CONFIG_WEBM_IO
   1029   if (input.vpx_input_ctx->file_type == FILE_TYPE_WEBM)
   1030     webm_free(input.webm_ctx);
   1031 #endif
   1032 
   1033   if (input.vpx_input_ctx->file_type != FILE_TYPE_WEBM) free(buf);
   1034 
   1035   if (scaled_img) vpx_img_free(scaled_img);
   1036 #if CONFIG_VP9_HIGHBITDEPTH
   1037   if (img_shifted) vpx_img_free(img_shifted);
   1038 #endif
   1039 
   1040   for (i = 0; i < ext_fb_list.num_external_frame_buffers; ++i) {
   1041     free(ext_fb_list.ext_fb[i].data);
   1042   }
   1043   free(ext_fb_list.ext_fb);
   1044 
   1045   fclose(infile);
   1046   if (framestats_file) fclose(framestats_file);
   1047 
   1048   free(argv);
   1049 
   1050   return ret;
   1051 }
   1052 
   1053 int main(int argc, const char **argv_) {
   1054   unsigned int loops = 1, i;
   1055   char **argv, **argi, **argj;
   1056   struct arg arg;
   1057   int error = 0;
   1058 
   1059   argv = argv_dup(argc - 1, argv_ + 1);
   1060   for (argi = argj = argv; (*argj = *argi); argi += arg.argv_step) {
   1061     memset(&arg, 0, sizeof(arg));
   1062     arg.argv_step = 1;
   1063 
   1064     if (arg_match(&arg, &looparg, argi)) {
   1065       loops = arg_parse_uint(&arg);
   1066       break;
   1067     }
   1068   }
   1069   free(argv);
   1070   for (i = 0; !error && i < loops; i++) error = main_loop(argc, argv_);
   1071   return error;
   1072 }
   1073