src/gallium/state_trackers/omx/vid_dec_mpeg12.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2013 Advanced Micro Devices, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 /*
  29  * Authors:
  30  *      Christian König <christian.koenig@amd.com>
  31  *
  32  */
  33
  34 #include "pipe/p_video_codec.h"
  35 #include "vl/vl_vlc.h"
  36 #include "vl/vl_zscan.h"
  37
  38 #include "vid_dec.h"
  39
  40 static uint8_t default_intra_matrix[64] = {
  41     8, 16, 19, 22, 26, 27, 29, 34,
  42    16, 16, 19, 22, 22, 22, 22, 26,
  43    26, 27, 22, 26, 26, 27, 29, 24,
  44    27, 27, 29, 32, 27, 29, 29, 32,
  45    35, 29, 34, 34, 35, 40, 34, 34,
  46    37, 40, 48, 37, 38, 40, 48, 58,
  47    26, 27, 29, 34, 38, 46, 56, 69,
  48    27, 29, 35, 38, 46, 56, 69, 83
  49 };
  50
  51 static uint8_t default_non_intra_matrix[64] = {
  52    16, 16, 16, 16, 16, 16, 16, 16,
  53    16, 16, 16, 16, 16, 16, 16, 16,
  54    16, 16, 16, 16, 16, 16, 16, 16,
  55    16, 16, 16, 16, 16, 16, 16, 16,
  56    16, 16, 16, 16, 16, 16, 16, 16,
  57    16, 16, 16, 16, 16, 16, 16, 16,
  58    16, 16, 16, 16, 16, 16, 16, 16,
  59    16, 16, 16, 16, 16, 16, 16, 16
  60 };
  61
  62 static void vid_dec_mpeg12_Decode(vid_dec_PrivateType *priv, struct vl_vlc *vlc, unsigned min_bits_left);
  63 static void vid_dec_mpeg12_EndFrame(vid_dec_PrivateType *priv);
  64 static struct pipe_video_buffer *vid_dec_mpeg12_Flush(vid_dec_PrivateType *priv);
  65
  66 void vid_dec_mpeg12_Init(vid_dec_PrivateType *priv)
  67 {
  68    struct pipe_video_codec templat = {};
  69    omx_base_video_PortType *port;
  70
  71    port = (omx_base_video_PortType *)priv->ports[OMX_BASE_FILTER_INPUTPORT_INDEX];
  72    templat.profile = priv->profile;
  73    templat.entrypoint = PIPE_VIDEO_ENTRYPOINT_BITSTREAM;
  74    templat.chroma_format = PIPE_VIDEO_CHROMA_FORMAT_420;
  75    templat.max_references = 2;
  76    templat.expect_chunked_decode = true;
  77    templat.width = port->sPortParam.format.video.nFrameWidth;
  78    templat.height = port->sPortParam.format.video.nFrameHeight;
  79
  80    priv->codec = priv->pipe->create_video_codec(priv->pipe, &templat);
  81
  82    priv->picture.base.profile = PIPE_VIDEO_PROFILE_MPEG2_MAIN;
  83    priv->picture.mpeg12.intra_matrix = default_intra_matrix;
  84    priv->picture.mpeg12.non_intra_matrix = default_non_intra_matrix;
  85
  86    priv->Decode = vid_dec_mpeg12_Decode;
  87    priv->EndFrame = vid_dec_mpeg12_EndFrame;
  88    priv->Flush = vid_dec_mpeg12_Flush;
  89 }
  90
  91 static void BeginFrame(vid_dec_PrivateType *priv)
  92 {
  93    if (priv->picture.mpeg12.picture_coding_type != PIPE_MPEG12_PICTURE_CODING_TYPE_B) {
  94       priv->picture.mpeg12.ref[0] = priv->picture.mpeg12.ref[1];
  95       priv->picture.mpeg12.ref[1] = NULL;
  96    }
  97
  98    if (priv->target == priv->picture.mpeg12.ref[0]) {
  99       struct pipe_video_buffer *tmp = priv->target;
 100       priv->target = priv->shadow;
 101       priv->shadow = tmp;
 102    }
 103
 104    vid_dec_NeedTarget(priv);
 105
 106    priv->codec->begin_frame(priv->codec, priv->target, &priv->picture.base);
 107    priv->frame_started = true;
 108 }
 109
 110 static void vid_dec_mpeg12_EndFrame(vid_dec_PrivateType *priv)
 111 {
 112    struct pipe_video_buffer *done;
 113
 114    priv->codec->end_frame(priv->codec, priv->target, &priv->picture.base);
 115    priv->frame_started = false;
 116
 117    if (priv->picture.mpeg12.picture_coding_type != PIPE_MPEG12_PICTURE_CODING_TYPE_B) {
 118
 119       priv->picture.mpeg12.ref[1] = priv->target;
 120       done = priv->picture.mpeg12.ref[0];
 121       if (!done) {
 122          priv->target = NULL;
 123          return;
 124       }
 125
 126    } else
 127       done = priv->target;
 128
 129    priv->frame_finished = true;
 130    priv->target = priv->in_buffers[0]->pInputPortPrivate;
 131    priv->in_buffers[0]->pInputPortPrivate = done;
 132 }
 133
 134 static struct pipe_video_buffer *vid_dec_mpeg12_Flush(vid_dec_PrivateType *priv)
 135 {
 136    struct pipe_video_buffer *result = priv->picture.mpeg12.ref[1];
 137    priv->picture.mpeg12.ref[1] = NULL;
 138    return result;
 139 }
 140
 141 static void vid_dec_mpeg12_Decode(vid_dec_PrivateType *priv, struct vl_vlc *vlc, unsigned min_bits_left)
 142 {
 143    uint8_t code;
 144    unsigned i;
 145
 146    if (!vl_vlc_search_byte(vlc, vl_vlc_bits_left(vlc) - min_bits_left, 0x00))
 147       return;
 148
 149    if (vl_vlc_peekbits(vlc, 24) != 0x000001) {
 150       vl_vlc_eatbits(vlc, 8);
 151       return;
 152    }
 153
 154    if (priv->slice) {
 155       unsigned bytes = priv->bytes_left - (vl_vlc_bits_left(vlc) / 8);
 156       priv->codec->decode_bitstream(priv->codec, priv->target, &priv->picture.base,
 157                                     1, &priv->slice, &bytes);
 158       priv->slice = NULL;
 159    }
 160
 161    vl_vlc_eatbits(vlc, 24);
 162    code = vl_vlc_get_uimsbf(vlc, 8);
 163
 164    if (priv->frame_started && (code == 0x00 || code > 0xAF))
 165       vid_dec_mpeg12_EndFrame(priv);
 166
 167    if (code == 0xB3) {
 168       /* sequence header code */
 169       vl_vlc_fillbits(vlc);
 170
 171       /* horizontal_size_value */
 172       vl_vlc_get_uimsbf(vlc, 12);
 173
 174       /* vertical_size_value */
 175       vl_vlc_get_uimsbf(vlc, 12);
 176
 177       /* aspect_ratio_information */
 178       vl_vlc_get_uimsbf(vlc, 4);
 179
 180       /* frame_rate_code */
 181       vl_vlc_get_uimsbf(vlc, 4);
 182
 183       vl_vlc_fillbits(vlc);
 184
 185       /* bit_rate_value */
 186       vl_vlc_get_uimsbf(vlc, 18);
 187
 188       /* marker_bit */
 189       vl_vlc_get_uimsbf(vlc, 1);
 190
 191       /* vbv_buffer_size_value */
 192       vl_vlc_get_uimsbf(vlc, 10);
 193
 194       /* constrained_parameters_flag */
 195       vl_vlc_get_uimsbf(vlc, 1);
 196
 197       vl_vlc_fillbits(vlc);
 198
 199       /* load_intra_quantiser_matrix */
 200       if (vl_vlc_get_uimsbf(vlc, 1)) {
 201          /* intra_quantiser_matrix */
 202          priv->picture.mpeg12.intra_matrix = priv->codec_data.mpeg12.intra_matrix;
 203          for (i = 0; i < 64; ++i) {
 204             priv->codec_data.mpeg12.intra_matrix[vl_zscan_normal[i]] = vl_vlc_get_uimsbf(vlc, 8);
 205             vl_vlc_fillbits(vlc);
 206          }
 207       } else
 208          priv->picture.mpeg12.intra_matrix = default_intra_matrix;
 209
 210       /* load_non_intra_quantiser_matrix */
 211       if (vl_vlc_get_uimsbf(vlc, 1)) {
 212          /* non_intra_quantiser_matrix */
 213          priv->picture.mpeg12.non_intra_matrix = priv->codec_data.mpeg12.non_intra_matrix;
 214          for (i = 0; i < 64; ++i) {
 215             priv->codec_data.mpeg12.non_intra_matrix[i] = vl_vlc_get_uimsbf(vlc, 8);
 216             vl_vlc_fillbits(vlc);
 217          }
 218       } else
 219          priv->picture.mpeg12.non_intra_matrix = default_non_intra_matrix;
 220
 221    } else if (code == 0x00) {
 222       /* picture start code */
 223       vl_vlc_fillbits(vlc);
 224
 225       /* temporal_reference */
 226       vl_vlc_get_uimsbf(vlc, 10);
 227
 228       priv->picture.mpeg12.picture_coding_type = vl_vlc_get_uimsbf(vlc, 3);
 229
 230       /* vbv_delay */
 231       vl_vlc_get_uimsbf(vlc, 16);
 232
 233       vl_vlc_fillbits(vlc);
 234       if (priv->picture.mpeg12.picture_coding_type == 2 ||
 235           priv->picture.mpeg12.picture_coding_type == 3) {
 236          priv->picture.mpeg12.full_pel_forward_vector = vl_vlc_get_uimsbf(vlc, 1);
 237          /* forward_f_code */
 238          priv->picture.mpeg12.f_code[0][0] = vl_vlc_get_uimsbf(vlc, 3) - 1;
 239          priv->picture.mpeg12.f_code[0][1] = priv->picture.mpeg12.f_code[0][0];
 240       } else {
 241          priv->picture.mpeg12.full_pel_forward_vector = 0;
 242          priv->picture.mpeg12.f_code[0][1] = priv->picture.mpeg12.f_code[0][0] = 14;
 243       }
 244
 245       if (priv->picture.mpeg12.picture_coding_type == 3) {
 246          priv->picture.mpeg12.full_pel_backward_vector = vl_vlc_get_uimsbf(vlc, 1);
 247          /* backward_f_code */
 248          priv->picture.mpeg12.f_code[1][0] = vl_vlc_get_uimsbf(vlc, 3) - 1;
 249          priv->picture.mpeg12.f_code[1][1] = priv->picture.mpeg12.f_code[1][0];
 250       } else {
 251          priv->picture.mpeg12.full_pel_backward_vector = 0;
 252          priv->picture.mpeg12.f_code[0][1] = priv->picture.mpeg12.f_code[0][0] = 14;
 253       }
 254
 255       /* extra_bit_picture */
 256       while (vl_vlc_get_uimsbf(vlc, 1)) {
 257          /* extra_information_picture */
 258          vl_vlc_get_uimsbf(vlc, 8);
 259          vl_vlc_fillbits(vlc);
 260       }
 261
 262    } else if (code == 0xB5) {
 263       /* extension start code */
 264       vl_vlc_fillbits(vlc);
 265
 266       /* extension_start_code_identifier */
 267       switch (vl_vlc_get_uimsbf(vlc, 4)) {
 268       case 0x3: /* quant matrix extension */
 269
 270          /* load_intra_quantiser_matrix */
 271          if (vl_vlc_get_uimsbf(vlc, 1)) {
 272             /* intra_quantiser_matrix */
 273             priv->picture.mpeg12.intra_matrix = priv->codec_data.mpeg12.intra_matrix;
 274             for (i = 0; i < 64; ++i) {
 275                priv->codec_data.mpeg12.intra_matrix[vl_zscan_normal[i]] = vl_vlc_get_uimsbf(vlc, 8);
 276                vl_vlc_fillbits(vlc);
 277             }
 278          } else
 279             priv->picture.mpeg12.intra_matrix = default_intra_matrix;
 280
 281          /* load_non_intra_quantiser_matrix */
 282          if (vl_vlc_get_uimsbf(vlc, 1)) {
 283             /* non_intra_quantiser_matrix */
 284             priv->picture.mpeg12.non_intra_matrix = priv->codec_data.mpeg12.non_intra_matrix;
 285             for (i = 0; i < 64; ++i) {
 286                priv->codec_data.mpeg12.non_intra_matrix[i] = vl_vlc_get_uimsbf(vlc, 8);
 287                vl_vlc_fillbits(vlc);
 288             }
 289          } else
 290             priv->picture.mpeg12.intra_matrix = default_non_intra_matrix;
 291
 292          break;
 293
 294       case 0x8: /* picture coding extension */
 295
 296          priv->picture.mpeg12.f_code[0][0] = vl_vlc_get_uimsbf(vlc, 4) - 1;
 297          priv->picture.mpeg12.f_code[0][1] = vl_vlc_get_uimsbf(vlc, 4) - 1;
 298          priv->picture.mpeg12.f_code[1][0] = vl_vlc_get_uimsbf(vlc, 4) - 1;
 299          priv->picture.mpeg12.f_code[1][1] = vl_vlc_get_uimsbf(vlc, 4) - 1;
 300          priv->picture.mpeg12.intra_dc_precision = vl_vlc_get_uimsbf(vlc, 2);
 301          priv->picture.mpeg12.picture_structure = vl_vlc_get_uimsbf(vlc, 2);
 302          priv->picture.mpeg12.top_field_first = vl_vlc_get_uimsbf(vlc, 1);
 303          priv->picture.mpeg12.frame_pred_frame_dct = vl_vlc_get_uimsbf(vlc, 1);
 304          priv->picture.mpeg12.concealment_motion_vectors = vl_vlc_get_uimsbf(vlc, 1);
 305          priv->picture.mpeg12.q_scale_type = vl_vlc_get_uimsbf(vlc, 1);
 306          priv->picture.mpeg12.intra_vlc_format = vl_vlc_get_uimsbf(vlc, 1);
 307          priv->picture.mpeg12.alternate_scan = vl_vlc_get_uimsbf(vlc, 1);
 308
 309          /* repeat_first_field */
 310          vl_vlc_get_uimsbf(vlc, 1);
 311
 312          /* chroma_420_type */
 313          vl_vlc_get_uimsbf(vlc, 1);
 314
 315          vl_vlc_fillbits(vlc);
 316
 317          /* progressive_frame */
 318          vl_vlc_get_uimsbf(vlc, 1);
 319
 320          /* composite_display_flag */
 321          if (vl_vlc_get_uimsbf(vlc, 1)) {
 322
 323             /* v_axis */
 324             vl_vlc_get_uimsbf(vlc, 1);
 325
 326             /* field_sequence */
 327             vl_vlc_get_uimsbf(vlc, 3);
 328
 329             /* sub_carrier */
 330             vl_vlc_get_uimsbf(vlc, 1);
 331
 332             /* burst_amplitude */
 333             vl_vlc_get_uimsbf(vlc, 7);
 334
 335             /* sub_carrier_phase */
 336             vl_vlc_get_uimsbf(vlc, 8);
 337          }
 338          break;
 339       }
 340
 341    } else if (code <= 0xAF) {
 342       /* slice start */
 343       unsigned bytes = (vl_vlc_valid_bits(vlc) / 8) + 4;
 344       uint8_t buf[12];
 345       const void *ptr = buf;
 346       unsigned i;
 347
 348       if (!priv->frame_started)
 349          BeginFrame(priv);
 350
 351       buf[0] = 0x00;
 352       buf[1] = 0x00;
 353       buf[2] = 0x01;
 354       buf[3] = code;
 355       for (i = 4; i < bytes; ++i)
 356          buf[i] = vl_vlc_get_uimsbf(vlc, 8);
 357
 358       priv->codec->decode_bitstream(priv->codec, priv->target, &priv->picture.base,
 359                                     1, &ptr, &bytes);
 360
 361       priv->bytes_left = vl_vlc_bits_left(vlc) / 8;
 362       priv->slice = vlc->data;
 363
 364    } else if (code == 0xB2) {
 365       /* user data start */
 366
 367    } else if (code == 0xB4) {
 368       /* sequence error */
 369    } else if (code == 0xB7) {
 370       /* sequence end */
 371    } else if (code == 0xB8) {
 372       /* group start */
 373    } else if (code >= 0xB9) {
 374       /* system start */
 375    } else {
 376       /* reserved */
 377    }
 378
 379    /* resync to byte boundary */
 380    vl_vlc_eatbits(vlc, vl_vlc_valid_bits(vlc) % 8);
 381 }