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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 <stdlib.h>
12 #include <string.h>
13 
14 #include "./vpx_version.h"
15 
16 #include "vpx/internal/vpx_codec_internal.h"
17 #include "vpx/vp8dx.h"
18 #include "vpx/vpx_decoder.h"
19 
20 #include "vp9/common/vp9_frame_buffers.h"
21 
22 #include "vp9/decoder/vp9_decoder.h"
23 #include "vp9/decoder/vp9_decodeframe.h"
24 #include "vp9/decoder/vp9_read_bit_buffer.h"
25 
26 #include "vp9/vp9_iface_common.h"
27 
28 #define VP9_CAP_POSTPROC (CONFIG_VP9_POSTPROC ? VPX_CODEC_CAP_POSTPROC : 0)
29 
30 typedef vpx_codec_stream_info_t vp9_stream_info_t;
31 
32 struct vpx_codec_alg_priv {
33   vpx_codec_priv_t        base;
34   vpx_codec_dec_cfg_t     cfg;
35   vp9_stream_info_t       si;
36   struct VP9Decoder *pbi;
37   int                     postproc_cfg_set;
38   vp8_postproc_cfg_t      postproc_cfg;
39   vpx_decrypt_cb          decrypt_cb;
40   void                   *decrypt_state;
41   vpx_image_t             img;
42   int                     img_avail;
43   int                     flushed;
44   int                     invert_tile_order;
45   int                     frame_parallel_decode;  // frame-based threading.
46 
47   // External frame buffer info to save for VP9 common.
48   void *ext_priv;  // Private data associated with the external frame buffers.
49   vpx_get_frame_buffer_cb_fn_t get_ext_fb_cb;
50   vpx_release_frame_buffer_cb_fn_t release_ext_fb_cb;
51 };
52 
decoder_init(vpx_codec_ctx_t * ctx,vpx_codec_priv_enc_mr_cfg_t * data)53 static vpx_codec_err_t decoder_init(vpx_codec_ctx_t *ctx,
54                                     vpx_codec_priv_enc_mr_cfg_t *data) {
55   // This function only allocates space for the vpx_codec_alg_priv_t
56   // structure. More memory may be required at the time the stream
57   // information becomes known.
58   (void)data;
59 
60   if (!ctx->priv) {
61     vpx_codec_alg_priv_t *const priv = vpx_calloc(1, sizeof(*priv));
62     if (priv == NULL)
63       return VPX_CODEC_MEM_ERROR;
64 
65     ctx->priv = (vpx_codec_priv_t *)priv;
66     ctx->priv->init_flags = ctx->init_flags;
67 
68     priv->si.sz = sizeof(priv->si);
69     priv->flushed = 0;
70     priv->frame_parallel_decode =
71         (ctx->init_flags & VPX_CODEC_USE_FRAME_THREADING);
72     priv->frame_parallel_decode = 0;  // Disable for now
73 
74     if (ctx->config.dec) {
75       priv->cfg = *ctx->config.dec;
76       ctx->config.dec = &priv->cfg;
77     }
78   }
79 
80   return VPX_CODEC_OK;
81 }
82 
decoder_destroy(vpx_codec_alg_priv_t * ctx)83 static vpx_codec_err_t decoder_destroy(vpx_codec_alg_priv_t *ctx) {
84   if (ctx->pbi) {
85     vp9_decoder_remove(ctx->pbi);
86     ctx->pbi = NULL;
87   }
88 
89   vpx_free(ctx);
90 
91   return VPX_CODEC_OK;
92 }
93 
parse_bitdepth_colorspace_sampling(BITSTREAM_PROFILE profile,struct vp9_read_bit_buffer * rb)94 static int parse_bitdepth_colorspace_sampling(
95     BITSTREAM_PROFILE profile, struct vp9_read_bit_buffer *rb) {
96   const int sRGB = 7;
97   int colorspace;
98   if (profile >= PROFILE_2)
99     rb->bit_offset += 1;  // Bit-depth 10 or 12.
100   colorspace = vp9_rb_read_literal(rb, 3);
101   if (colorspace != sRGB) {
102     rb->bit_offset += 1;  // [16,235] (including xvycc) vs [0,255] range.
103     if (profile == PROFILE_1 || profile == PROFILE_3) {
104       rb->bit_offset += 2;  // subsampling x/y.
105       rb->bit_offset += 1;  // unused.
106     }
107   } else {
108     if (profile == PROFILE_1 || profile == PROFILE_3) {
109       rb->bit_offset += 1;  // unused
110     } else {
111       // RGB is only available in version 1.
112       return 0;
113     }
114   }
115   return 1;
116 }
117 
decoder_peek_si_internal(const uint8_t * data,unsigned int data_sz,vpx_codec_stream_info_t * si,int * is_intra_only,vpx_decrypt_cb decrypt_cb,void * decrypt_state)118 static vpx_codec_err_t decoder_peek_si_internal(const uint8_t *data,
119                                                 unsigned int data_sz,
120                                                 vpx_codec_stream_info_t *si,
121                                                 int *is_intra_only,
122                                                 vpx_decrypt_cb decrypt_cb,
123                                                 void *decrypt_state) {
124   int intra_only_flag = 0;
125   uint8_t clear_buffer[9];
126 
127   if (data + data_sz <= data)
128     return VPX_CODEC_INVALID_PARAM;
129 
130   si->is_kf = 0;
131   si->w = si->h = 0;
132 
133   if (decrypt_cb) {
134     data_sz = MIN(sizeof(clear_buffer), data_sz);
135     decrypt_cb(decrypt_state, data, clear_buffer, data_sz);
136     data = clear_buffer;
137   }
138 
139   {
140     int show_frame;
141     int error_resilient;
142     struct vp9_read_bit_buffer rb = { data, data + data_sz, 0, NULL, NULL };
143     const int frame_marker = vp9_rb_read_literal(&rb, 2);
144     const BITSTREAM_PROFILE profile = vp9_read_profile(&rb);
145 
146     if (frame_marker != VP9_FRAME_MARKER)
147       return VPX_CODEC_UNSUP_BITSTREAM;
148 
149     if (profile >= MAX_PROFILES) return VPX_CODEC_UNSUP_BITSTREAM;
150 
151     if (vp9_rb_read_bit(&rb)) {  // show an existing frame
152       vp9_rb_read_literal(&rb, 3);  // Frame buffer to show.
153       return VPX_CODEC_OK;
154     }
155 
156     if (data_sz <= 8)
157       return VPX_CODEC_UNSUP_BITSTREAM;
158 
159     si->is_kf = !vp9_rb_read_bit(&rb);
160     show_frame = vp9_rb_read_bit(&rb);
161     error_resilient = vp9_rb_read_bit(&rb);
162 
163     if (si->is_kf) {
164       if (!vp9_read_sync_code(&rb))
165         return VPX_CODEC_UNSUP_BITSTREAM;
166 
167       if (!parse_bitdepth_colorspace_sampling(profile, &rb))
168         return VPX_CODEC_UNSUP_BITSTREAM;
169       vp9_read_frame_size(&rb, (int *)&si->w, (int *)&si->h);
170     } else {
171       intra_only_flag = show_frame ? 0 : vp9_rb_read_bit(&rb);
172 
173       rb.bit_offset += error_resilient ? 0 : 2;  // reset_frame_context
174 
175       if (intra_only_flag) {
176         if (!vp9_read_sync_code(&rb))
177           return VPX_CODEC_UNSUP_BITSTREAM;
178         if (profile > PROFILE_0) {
179           if (!parse_bitdepth_colorspace_sampling(profile, &rb))
180             return VPX_CODEC_UNSUP_BITSTREAM;
181         }
182         rb.bit_offset += REF_FRAMES;  // refresh_frame_flags
183         vp9_read_frame_size(&rb, (int *)&si->w, (int *)&si->h);
184       }
185     }
186   }
187   if (is_intra_only != NULL)
188     *is_intra_only = intra_only_flag;
189   return VPX_CODEC_OK;
190 }
191 
decoder_peek_si(const uint8_t * data,unsigned int data_sz,vpx_codec_stream_info_t * si)192 static vpx_codec_err_t decoder_peek_si(const uint8_t *data,
193                                        unsigned int data_sz,
194                                        vpx_codec_stream_info_t *si) {
195   return decoder_peek_si_internal(data, data_sz, si, NULL, NULL, NULL);
196 }
197 
decoder_get_si(vpx_codec_alg_priv_t * ctx,vpx_codec_stream_info_t * si)198 static vpx_codec_err_t decoder_get_si(vpx_codec_alg_priv_t *ctx,
199                                       vpx_codec_stream_info_t *si) {
200   const size_t sz = (si->sz >= sizeof(vp9_stream_info_t))
201                        ? sizeof(vp9_stream_info_t)
202                        : sizeof(vpx_codec_stream_info_t);
203   memcpy(si, &ctx->si, sz);
204   si->sz = (unsigned int)sz;
205 
206   return VPX_CODEC_OK;
207 }
208 
update_error_state(vpx_codec_alg_priv_t * ctx,const struct vpx_internal_error_info * error)209 static vpx_codec_err_t update_error_state(vpx_codec_alg_priv_t *ctx,
210                            const struct vpx_internal_error_info *error) {
211   if (error->error_code)
212     ctx->base.err_detail = error->has_detail ? error->detail : NULL;
213 
214   return error->error_code;
215 }
216 
init_buffer_callbacks(vpx_codec_alg_priv_t * ctx)217 static void init_buffer_callbacks(vpx_codec_alg_priv_t *ctx) {
218   VP9_COMMON *const cm = &ctx->pbi->common;
219 
220   cm->new_fb_idx = -1;
221 
222   if (ctx->get_ext_fb_cb != NULL && ctx->release_ext_fb_cb != NULL) {
223     cm->get_fb_cb = ctx->get_ext_fb_cb;
224     cm->release_fb_cb = ctx->release_ext_fb_cb;
225     cm->cb_priv = ctx->ext_priv;
226   } else {
227     cm->get_fb_cb = vp9_get_frame_buffer;
228     cm->release_fb_cb = vp9_release_frame_buffer;
229 
230     if (vp9_alloc_internal_frame_buffers(&cm->int_frame_buffers))
231       vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR,
232                          "Failed to initialize internal frame buffers");
233 
234     cm->cb_priv = &cm->int_frame_buffers;
235   }
236 }
237 
set_default_ppflags(vp8_postproc_cfg_t * cfg)238 static void set_default_ppflags(vp8_postproc_cfg_t *cfg) {
239   cfg->post_proc_flag = VP8_DEBLOCK | VP8_DEMACROBLOCK;
240   cfg->deblocking_level = 4;
241   cfg->noise_level = 0;
242 }
243 
set_ppflags(const vpx_codec_alg_priv_t * ctx,vp9_ppflags_t * flags)244 static void set_ppflags(const vpx_codec_alg_priv_t *ctx,
245                         vp9_ppflags_t *flags) {
246   flags->post_proc_flag =
247       ctx->postproc_cfg.post_proc_flag;
248 
249   flags->deblocking_level = ctx->postproc_cfg.deblocking_level;
250   flags->noise_level = ctx->postproc_cfg.noise_level;
251 }
252 
init_decoder(vpx_codec_alg_priv_t * ctx)253 static void init_decoder(vpx_codec_alg_priv_t *ctx) {
254   ctx->pbi = vp9_decoder_create();
255   if (ctx->pbi == NULL)
256     return;
257 
258   ctx->pbi->max_threads = ctx->cfg.threads;
259   ctx->pbi->inv_tile_order = ctx->invert_tile_order;
260   ctx->pbi->frame_parallel_decode = ctx->frame_parallel_decode;
261 
262   // If postprocessing was enabled by the application and a
263   // configuration has not been provided, default it.
264   if (!ctx->postproc_cfg_set &&
265       (ctx->base.init_flags & VPX_CODEC_USE_POSTPROC))
266     set_default_ppflags(&ctx->postproc_cfg);
267 
268   init_buffer_callbacks(ctx);
269 }
270 
decode_one(vpx_codec_alg_priv_t * ctx,const uint8_t ** data,unsigned int data_sz,void * user_priv,int64_t deadline)271 static vpx_codec_err_t decode_one(vpx_codec_alg_priv_t *ctx,
272                                   const uint8_t **data, unsigned int data_sz,
273                                   void *user_priv, int64_t deadline) {
274   YV12_BUFFER_CONFIG sd;
275   vp9_ppflags_t flags = {0, 0, 0};
276   VP9_COMMON *cm = NULL;
277 
278   (void)deadline;
279 
280   vp9_zero(sd);
281   ctx->img_avail = 0;
282 
283   // Determine the stream parameters. Note that we rely on peek_si to
284   // validate that we have a buffer that does not wrap around the top
285   // of the heap.
286   if (!ctx->si.h) {
287     int is_intra_only = 0;
288     const vpx_codec_err_t res =
289         decoder_peek_si_internal(*data, data_sz, &ctx->si, &is_intra_only,
290                                  ctx->decrypt_cb, ctx->decrypt_state);
291     if (res != VPX_CODEC_OK)
292       return res;
293 
294     if (!ctx->si.is_kf && !is_intra_only)
295       return VPX_CODEC_ERROR;
296   }
297 
298   // Initialize the decoder instance on the first frame
299   if (ctx->pbi == NULL) {
300     init_decoder(ctx);
301     if (ctx->pbi == NULL)
302       return VPX_CODEC_ERROR;
303   }
304 
305   // Set these even if already initialized.  The caller may have changed the
306   // decrypt config between frames.
307   ctx->pbi->decrypt_cb = ctx->decrypt_cb;
308   ctx->pbi->decrypt_state = ctx->decrypt_state;
309 
310   cm = &ctx->pbi->common;
311 
312   if (vp9_receive_compressed_data(ctx->pbi, data_sz, data))
313     return update_error_state(ctx, &cm->error);
314 
315   if (ctx->base.init_flags & VPX_CODEC_USE_POSTPROC)
316     set_ppflags(ctx, &flags);
317 
318   if (vp9_get_raw_frame(ctx->pbi, &sd, &flags))
319     return update_error_state(ctx, &cm->error);
320 
321   yuvconfig2image(&ctx->img, &sd, user_priv);
322   ctx->img.fb_priv = cm->frame_bufs[cm->new_fb_idx].raw_frame_buffer.priv;
323   ctx->img_avail = 1;
324 
325   return VPX_CODEC_OK;
326 }
327 
decoder_decode(vpx_codec_alg_priv_t * ctx,const uint8_t * data,unsigned int data_sz,void * user_priv,long deadline)328 static vpx_codec_err_t decoder_decode(vpx_codec_alg_priv_t *ctx,
329                                       const uint8_t *data, unsigned int data_sz,
330                                       void *user_priv, long deadline) {
331   const uint8_t *data_start = data;
332   const uint8_t * const data_end = data + data_sz;
333   vpx_codec_err_t res;
334   uint32_t frame_sizes[8];
335   int frame_count;
336 
337   if (data == NULL && data_sz == 0) {
338     ctx->flushed = 1;
339     return VPX_CODEC_OK;
340   }
341 
342   // Reset flushed when receiving a valid frame.
343   ctx->flushed = 0;
344 
345   res = vp9_parse_superframe_index(data, data_sz, frame_sizes, &frame_count,
346                                    ctx->decrypt_cb, ctx->decrypt_state);
347   if (res != VPX_CODEC_OK)
348     return res;
349 
350   if (ctx->frame_parallel_decode) {
351     // Decode in frame parallel mode. When decoding in this mode, the frame
352     // passed to the decoder must be either a normal frame or a superframe with
353     // superframe index so the decoder could get each frame's start position
354     // in the superframe.
355     if (frame_count > 0) {
356       int i;
357 
358       for (i = 0; i < frame_count; ++i) {
359         const uint8_t *data_start_copy = data_start;
360         const uint32_t frame_size = frame_sizes[i];
361         vpx_codec_err_t res;
362         if (data_start < data
363             || frame_size > (uint32_t) (data_end - data_start)) {
364           ctx->base.err_detail = "Invalid frame size in index";
365           return VPX_CODEC_CORRUPT_FRAME;
366         }
367 
368         res = decode_one(ctx, &data_start_copy, frame_size, user_priv,
369                          deadline);
370         if (res != VPX_CODEC_OK)
371           return res;
372 
373         data_start += frame_size;
374       }
375     } else {
376       res = decode_one(ctx, &data_start, data_sz, user_priv, deadline);
377       if (res != VPX_CODEC_OK)
378         return res;
379 
380       // Extra data detected after the frame.
381       if (data_start < data_end - 1) {
382         ctx->base.err_detail = "Fail to decode frame in parallel mode";
383         return VPX_CODEC_INCAPABLE;
384       }
385     }
386   } else {
387     // Decode in serial mode.
388     if (frame_count > 0) {
389       int i;
390 
391       for (i = 0; i < frame_count; ++i) {
392         const uint8_t *data_start_copy = data_start;
393         const uint32_t frame_size = frame_sizes[i];
394         vpx_codec_err_t res;
395         if (data_start < data
396             || frame_size > (uint32_t) (data_end - data_start)) {
397           ctx->base.err_detail = "Invalid frame size in index";
398           return VPX_CODEC_CORRUPT_FRAME;
399         }
400 
401         res = decode_one(ctx, &data_start_copy, frame_size, user_priv,
402                          deadline);
403         if (res != VPX_CODEC_OK)
404           return res;
405 
406         data_start += frame_size;
407       }
408     } else {
409       while (data_start < data_end) {
410         const uint32_t frame_size = (uint32_t) (data_end - data_start);
411         const vpx_codec_err_t res = decode_one(ctx, &data_start, frame_size,
412                                                user_priv, deadline);
413         if (res != VPX_CODEC_OK)
414           return res;
415 
416         // Account for suboptimal termination by the encoder.
417         while (data_start < data_end) {
418           const uint8_t marker = read_marker(ctx->decrypt_cb,
419                                              ctx->decrypt_state, data_start);
420           if (marker)
421             break;
422           ++data_start;
423         }
424       }
425     }
426   }
427 
428   return VPX_CODEC_OK;
429 }
430 
decoder_get_frame(vpx_codec_alg_priv_t * ctx,vpx_codec_iter_t * iter)431 static vpx_image_t *decoder_get_frame(vpx_codec_alg_priv_t *ctx,
432                                       vpx_codec_iter_t *iter) {
433   vpx_image_t *img = NULL;
434 
435   if (ctx->img_avail) {
436     // iter acts as a flip flop, so an image is only returned on the first
437     // call to get_frame.
438     if (!(*iter)) {
439       img = &ctx->img;
440       img->bit_depth = (int)ctx->pbi->common.bit_depth;
441       *iter = img;
442     }
443   }
444   ctx->img_avail = 0;
445 
446   return img;
447 }
448 
decoder_set_fb_fn(vpx_codec_alg_priv_t * ctx,vpx_get_frame_buffer_cb_fn_t cb_get,vpx_release_frame_buffer_cb_fn_t cb_release,void * cb_priv)449 static vpx_codec_err_t decoder_set_fb_fn(
450     vpx_codec_alg_priv_t *ctx,
451     vpx_get_frame_buffer_cb_fn_t cb_get,
452     vpx_release_frame_buffer_cb_fn_t cb_release, void *cb_priv) {
453   if (cb_get == NULL || cb_release == NULL) {
454     return VPX_CODEC_INVALID_PARAM;
455   } else if (ctx->pbi == NULL) {
456     // If the decoder has already been initialized, do not accept changes to
457     // the frame buffer functions.
458     ctx->get_ext_fb_cb = cb_get;
459     ctx->release_ext_fb_cb = cb_release;
460     ctx->ext_priv = cb_priv;
461     return VPX_CODEC_OK;
462   }
463 
464   return VPX_CODEC_ERROR;
465 }
466 
ctrl_set_reference(vpx_codec_alg_priv_t * ctx,va_list args)467 static vpx_codec_err_t ctrl_set_reference(vpx_codec_alg_priv_t *ctx,
468                                           va_list args) {
469   vpx_ref_frame_t *const data = va_arg(args, vpx_ref_frame_t *);
470 
471   if (data) {
472     vpx_ref_frame_t *const frame = (vpx_ref_frame_t *)data;
473     YV12_BUFFER_CONFIG sd;
474 
475     image2yuvconfig(&frame->img, &sd);
476     return vp9_set_reference_dec(&ctx->pbi->common,
477                                  (VP9_REFFRAME)frame->frame_type, &sd);
478   } else {
479     return VPX_CODEC_INVALID_PARAM;
480   }
481 }
482 
ctrl_copy_reference(vpx_codec_alg_priv_t * ctx,va_list args)483 static vpx_codec_err_t ctrl_copy_reference(vpx_codec_alg_priv_t *ctx,
484                                            va_list args) {
485   vpx_ref_frame_t *data = va_arg(args, vpx_ref_frame_t *);
486 
487   if (data) {
488     vpx_ref_frame_t *frame = (vpx_ref_frame_t *)data;
489     YV12_BUFFER_CONFIG sd;
490 
491     image2yuvconfig(&frame->img, &sd);
492 
493     return vp9_copy_reference_dec(ctx->pbi,
494                                   (VP9_REFFRAME)frame->frame_type, &sd);
495   } else {
496     return VPX_CODEC_INVALID_PARAM;
497   }
498 }
499 
ctrl_get_reference(vpx_codec_alg_priv_t * ctx,va_list args)500 static vpx_codec_err_t ctrl_get_reference(vpx_codec_alg_priv_t *ctx,
501                                           va_list args) {
502   vp9_ref_frame_t *data = va_arg(args, vp9_ref_frame_t *);
503 
504   if (data) {
505     YV12_BUFFER_CONFIG* fb = get_ref_frame(&ctx->pbi->common, data->idx);
506     if (fb == NULL) return VPX_CODEC_ERROR;
507 
508     yuvconfig2image(&data->img, fb, NULL);
509     return VPX_CODEC_OK;
510   } else {
511     return VPX_CODEC_INVALID_PARAM;
512   }
513 }
514 
ctrl_set_postproc(vpx_codec_alg_priv_t * ctx,va_list args)515 static vpx_codec_err_t ctrl_set_postproc(vpx_codec_alg_priv_t *ctx,
516                                          va_list args) {
517 #if CONFIG_VP9_POSTPROC
518   vp8_postproc_cfg_t *data = va_arg(args, vp8_postproc_cfg_t *);
519 
520   if (data) {
521     ctx->postproc_cfg_set = 1;
522     ctx->postproc_cfg = *((vp8_postproc_cfg_t *)data);
523     return VPX_CODEC_OK;
524   } else {
525     return VPX_CODEC_INVALID_PARAM;
526   }
527 #else
528   (void)ctx;
529   (void)args;
530   return VPX_CODEC_INCAPABLE;
531 #endif
532 }
533 
ctrl_set_dbg_options(vpx_codec_alg_priv_t * ctx,va_list args)534 static vpx_codec_err_t ctrl_set_dbg_options(vpx_codec_alg_priv_t *ctx,
535                                             va_list args) {
536   (void)ctx;
537   (void)args;
538   return VPX_CODEC_INCAPABLE;
539 }
540 
ctrl_get_last_ref_updates(vpx_codec_alg_priv_t * ctx,va_list args)541 static vpx_codec_err_t ctrl_get_last_ref_updates(vpx_codec_alg_priv_t *ctx,
542                                                  va_list args) {
543   int *const update_info = va_arg(args, int *);
544 
545   if (update_info) {
546     if (ctx->pbi)
547       *update_info = ctx->pbi->refresh_frame_flags;
548     else
549       return VPX_CODEC_ERROR;
550     return VPX_CODEC_OK;
551   } else {
552     return VPX_CODEC_INVALID_PARAM;
553   }
554 }
555 
556 
ctrl_get_frame_corrupted(vpx_codec_alg_priv_t * ctx,va_list args)557 static vpx_codec_err_t ctrl_get_frame_corrupted(vpx_codec_alg_priv_t *ctx,
558                                                 va_list args) {
559   int *corrupted = va_arg(args, int *);
560 
561   if (corrupted != NULL && ctx->pbi != NULL) {
562     const YV12_BUFFER_CONFIG *const frame = ctx->pbi->common.frame_to_show;
563     if (frame == NULL) return VPX_CODEC_ERROR;
564     *corrupted = frame->corrupted;
565     return VPX_CODEC_OK;
566   } else {
567     return VPX_CODEC_INVALID_PARAM;
568   }
569 }
570 
ctrl_get_display_size(vpx_codec_alg_priv_t * ctx,va_list args)571 static vpx_codec_err_t ctrl_get_display_size(vpx_codec_alg_priv_t *ctx,
572                                              va_list args) {
573   int *const display_size = va_arg(args, int *);
574 
575   if (display_size) {
576     if (ctx->pbi) {
577       const VP9_COMMON *const cm = &ctx->pbi->common;
578       display_size[0] = cm->display_width;
579       display_size[1] = cm->display_height;
580     } else {
581       return VPX_CODEC_ERROR;
582     }
583     return VPX_CODEC_OK;
584   } else {
585     return VPX_CODEC_INVALID_PARAM;
586   }
587 }
588 
ctrl_get_bit_depth(vpx_codec_alg_priv_t * ctx,va_list args)589 static vpx_codec_err_t ctrl_get_bit_depth(vpx_codec_alg_priv_t *ctx,
590                                           va_list args) {
591   unsigned int *const bit_depth = va_arg(args, unsigned int *);
592 
593   if (bit_depth) {
594     if (ctx->pbi) {
595       const VP9_COMMON *const cm = &ctx->pbi->common;
596       *bit_depth = cm->bit_depth;
597       return VPX_CODEC_OK;
598     } else {
599       return VPX_CODEC_ERROR;
600     }
601   } else {
602     return VPX_CODEC_INVALID_PARAM;
603   }
604 }
605 
ctrl_set_invert_tile_order(vpx_codec_alg_priv_t * ctx,va_list args)606 static vpx_codec_err_t ctrl_set_invert_tile_order(vpx_codec_alg_priv_t *ctx,
607                                                   va_list args) {
608   ctx->invert_tile_order = va_arg(args, int);
609   return VPX_CODEC_OK;
610 }
611 
ctrl_set_decryptor(vpx_codec_alg_priv_t * ctx,va_list args)612 static vpx_codec_err_t ctrl_set_decryptor(vpx_codec_alg_priv_t *ctx,
613                                           va_list args) {
614   vpx_decrypt_init *init = va_arg(args, vpx_decrypt_init *);
615   ctx->decrypt_cb = init ? init->decrypt_cb : NULL;
616   ctx->decrypt_state = init ? init->decrypt_state : NULL;
617   return VPX_CODEC_OK;
618 }
619 
620 static vpx_codec_ctrl_fn_map_t decoder_ctrl_maps[] = {
621   {VP8_COPY_REFERENCE,            ctrl_copy_reference},
622 
623   // Setters
624   {VP8_SET_REFERENCE,             ctrl_set_reference},
625   {VP8_SET_POSTPROC,              ctrl_set_postproc},
626   {VP8_SET_DBG_COLOR_REF_FRAME,   ctrl_set_dbg_options},
627   {VP8_SET_DBG_COLOR_MB_MODES,    ctrl_set_dbg_options},
628   {VP8_SET_DBG_COLOR_B_MODES,     ctrl_set_dbg_options},
629   {VP8_SET_DBG_DISPLAY_MV,        ctrl_set_dbg_options},
630   {VP9_INVERT_TILE_DECODE_ORDER,  ctrl_set_invert_tile_order},
631   {VPXD_SET_DECRYPTOR,            ctrl_set_decryptor},
632 
633   // Getters
634   {VP8D_GET_LAST_REF_UPDATES,     ctrl_get_last_ref_updates},
635   {VP8D_GET_FRAME_CORRUPTED,      ctrl_get_frame_corrupted},
636   {VP9_GET_REFERENCE,             ctrl_get_reference},
637   {VP9D_GET_DISPLAY_SIZE,         ctrl_get_display_size},
638   {VP9D_GET_BIT_DEPTH,            ctrl_get_bit_depth},
639 
640   { -1, NULL},
641 };
642 
643 #ifndef VERSION_STRING
644 #define VERSION_STRING
645 #endif
646 CODEC_INTERFACE(vpx_codec_vp9_dx) = {
647   "WebM Project VP9 Decoder" VERSION_STRING,
648   VPX_CODEC_INTERNAL_ABI_VERSION,
649   VPX_CODEC_CAP_DECODER | VP9_CAP_POSTPROC |
650       VPX_CODEC_CAP_EXTERNAL_FRAME_BUFFER,  // vpx_codec_caps_t
651   decoder_init,       // vpx_codec_init_fn_t
652   decoder_destroy,    // vpx_codec_destroy_fn_t
653   decoder_ctrl_maps,  // vpx_codec_ctrl_fn_map_t
654   { // NOLINT
655     decoder_peek_si,    // vpx_codec_peek_si_fn_t
656     decoder_get_si,     // vpx_codec_get_si_fn_t
657     decoder_decode,     // vpx_codec_decode_fn_t
658     decoder_get_frame,  // vpx_codec_frame_get_fn_t
659     decoder_set_fb_fn,  // vpx_codec_set_fb_fn_t
660   },
661   { // NOLINT
662     0,
663     NULL,  // vpx_codec_enc_cfg_map_t
664     NULL,  // vpx_codec_encode_fn_t
665     NULL,  // vpx_codec_get_cx_data_fn_t
666     NULL,  // vpx_codec_enc_config_set_fn_t
667     NULL,  // vpx_codec_get_global_headers_fn_t
668     NULL,  // vpx_codec_get_preview_frame_fn_t
669     NULL   // vpx_codec_enc_mr_get_mem_loc_fn_t
670   }
671 };
672