third_party/libva/va/va_enc_mpeg2.h

   1 /*
   2  * Copyright (c) 2012 Intel Corporation. All Rights Reserved.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the
   6  * "Software"), to deal in the Software without restriction, including
   7  * without limitation the rights to use, copy, modify, merge, publish,
   8  * distribute, sub license, and/or sell copies of the Software, and to
   9  * permit persons to whom the Software is furnished to do so, subject to
  10  * the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the
  13  * next paragraph) shall be included in all copies or substantial portions
  14  * of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  17  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  19  * IN NO EVENT SHALL INTEL AND/OR ITS SUPPLIERS BE LIABLE FOR
  20  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  21  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  22  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 /**
  26  * \file va_enc_mpeg2.h
  27  * \brief The MPEG-2 encoding API
  28  *
  29  * This file contains the \ref api_enc_mpeg2 "MPEG-2 encoding API".
  30  */
  31
  32 #ifndef _VA_ENC_MPEG2_H_
  33 #define _VA_ENC_MPEG2_H_
  34
  35 #ifdef __cplusplus
  36 extern "C" {
  37 #endif
  38
  39 /**
  40  * \defgroup api_enc_mpeg2 MPEG-2 encoding API
  41  *
  42  * @{
  43  */
  44
  45 /**
  46  * \brief MPEG-2 Quantization Matrix Buffer
  47  *
  48  */
  49 typedef VAIQMatrixBufferMPEG2 VAQMatrixBufferMPEG2;
  50
  51 /**
  52  * \brief Packed header types specific to MPEG-2 encoding.
  53  *
  54  * Types of packed headers generally used for MPEG-2 encoding.
  55  */
  56 typedef enum {
  57     /**
  58      * \brief Packed Sequence Parameter Set (SPS).
  59      *
  60      */
  61     VAEncPackedHeaderMPEG2_SPS = VAEncPackedHeaderSequence,
  62     /**
  63      * \brief Packed Picture Parameter Set (PPS).
  64      *
  65      */
  66     VAEncPackedHeaderMPEG2_PPS = VAEncPackedHeaderPicture,
  67     /**
  68      * \brief Packed slice header.
  69      *
  70      */
  71     VAEncPackedHeaderMPEG2_Slice = VAEncPackedHeaderSlice,
  72 } VAEncPackedHeaderTypeMPEG2;
  73
  74 /**
  75  * \brief Sequence parameter for MPEG-2 encoding
  76  *
  77  * This structure holds information for \c sequence_header() and
  78  * sequence_extension().
  79  *
  80  * If packed sequence headers mode is used, i.e. if the encoding
  81  * pipeline was configured with the #VA_ENC_PACKED_HEADER_SEQUENCE
  82  * flag, then the driver expects two more buffers to be provided to
  83  * the same \c vaRenderPicture() as this buffer:
  84  * - a #VAEncPackedHeaderParameterBuffer with type set to
  85  *   VAEncPackedHeaderType::VAEncPackedHeaderSequence ;
  86  * - a #VAEncPackedHeaderDataBuffer which holds the actual packed
  87  *   header data.
  88  *
  89  */
  90 typedef struct _VAEncSequenceParameterBufferMPEG2 {
  91     /** \brief Period between I frames. */
  92     unsigned int intra_period;
  93     /** \brief Period between I/P frames. */
  94     unsigned int ip_period;
  95     /** \brief Picture width.
  96      *
  97      * A 14bits unsigned inter, the lower 12bits
  98      * is horizontal_size_value, and the upper
  99      * 2bits is \c horizontal_size_extension
 100      *
 101      */
 102     unsigned short picture_width;
 103     /** \brief Picture height.
 104      *
 105      * A 14bits unsigned inter, the lower 12bits
 106      * is vertical_size_value, and the upper 2bits is
 107      * vertical_size_size_extension
 108      *
 109      */
 110     unsigned short picture_height;
 111     /**
 112      * \brief Initial bitrate set for this sequence in CBR or VBR modes.
 113      *
 114      * This field represents the initial bitrate value for this
 115      * sequence if CBR or VBR mode is used, i.e. if the encoder
 116      * pipeline was created with a #VAConfigAttribRateControl
 117      * attribute set to either \ref VA_RC_CBR or \ref VA_RC_VBR.
 118      *
 119      * bits_per_second may be derived from bit_rate.
 120      *
 121      */
 122     unsigned int bits_per_second;
 123     /**
 124      * \brief Frame rate
 125      *
 126      * Derived from frame_rate_value, frame_rate_extension_n and
 127      * frame_rate_extension_d
 128      *
 129      */
 130     float frame_rate;
 131     /** \brief Same as the element in sequence_header() */
 132     unsigned short aspect_ratio_information;
 133     /** \brief Define the size of VBV */
 134     unsigned int vbv_buffer_size;
 135
 136     union {
 137         struct {
 138             /** \brief Same as the element in Sequence extension() */
 139             unsigned int profile_and_level_indication   : 8;
 140             /** \brief Same as the element in Sequence extension() */
 141             unsigned int progressive_sequence           : 1;
 142             /** \brief Same as the element in Sequence extension() */
 143             unsigned int chroma_format                  : 2;
 144             /** \brief Same as the element in Sequence extension() */
 145             unsigned int low_delay                      : 1;
 146             /** \brief Same as the element in Sequence extension() */
 147             unsigned int frame_rate_extension_n         : 2;
 148             /** \brief Same as the element in Sequence extension() */
 149             unsigned int frame_rate_extension_d         : 5;
 150         } bits;
 151         unsigned int value;
 152     } sequence_extension;
 153
 154     /** \brief Flag to indicate the following GOP header are being updated */
 155     unsigned int new_gop_header;
 156
 157     union {
 158         struct {
 159             /** \brief Time code */
 160             unsigned int time_code                      : 25;
 161             /** \brief Same as the element in GOP header */
 162             unsigned int closed_gop                     : 1;
 163             /** \brief SAme as the element in GOP header */
 164             unsigned int broken_link                    : 1;
 165         } bits;
 166         unsigned int value;
 167     } gop_header;
 168 } VAEncSequenceParameterBufferMPEG2;
 169
 170 /**
 171  * \brief Picture parameter for MPEG-2 encoding
 172  *
 173  * This structure holds information for picture_header() and
 174  * picture_coding_extension()
 175  *
 176  * If packed picture headers mode is used, i.e. if the encoding
 177  * pipeline was configured with the #VA_ENC_PACKED_HEADER_PICTURE
 178  * flag, then the driver expects two more buffers to be provided to
 179  * the same \c vaRenderPicture() as this buffer:
 180  * - a #VAEncPackedHeaderParameterBuffer with type set to
 181  *   VAEncPackedHeaderType::VAEncPackedHeaderPicture ;
 182  * - a #VAEncPackedHeaderDataBuffer which holds the actual packed
 183  *   header data.
 184  *
 185  */
 186 typedef struct _VAEncPictureParameterBufferMPEG2 {
 187     /** \brief Forward reference picture */
 188     VASurfaceID forward_reference_picture;
 189     /** \brief Backward reference picture */
 190     VASurfaceID backward_reference_picture;
 191     /** \brief Reconstructed(decoded) picture */
 192     VASurfaceID reconstructed_picture;
 193     /**
 194      * \brief Output encoded bitstream.
 195      *
 196      * \ref coded_buf has type #VAEncCodedBufferType. It should be
 197      * large enough to hold the compressed NAL slice and possibly SPS
 198      * and PPS NAL units.
 199      */
 200     VABufferID coded_buf;
 201     /**
 202      * \brief Flag to indicate the picture is the last one or not.
 203      *
 204      * This fields holds 0 if the picture to be encoded is not
 205      * the last one in the stream. Otherwise, it
 206      * is \ref MPEG2_LAST_PICTURE_EOSTREAM.
 207      */
 208     unsigned char last_picture;
 209     /** \brief Picture type */
 210     VAEncPictureType picture_type;
 211     /** \brief Same as the element in picture_header() */
 212     unsigned int temporal_reference;
 213     /** \brief Same as the element in picture_header() */
 214     unsigned int vbv_delay;
 215     /** \brief Same as the element in Picture coding extension */
 216     unsigned char f_code[2][2];
 217     union {
 218         struct {
 219             /** \brief Same as the element in Picture coding extension */
 220             unsigned int intra_dc_precision             : 2;
 221             /** \brief Same as the element in Picture coding extension */
 222             unsigned int picture_structure              : 2;
 223             /** \brief Same as the element in Picture coding extension */
 224             unsigned int top_field_first                : 1;
 225             /** \brief Same as the element in Picture coding extension */
 226             unsigned int frame_pred_frame_dct           : 1;
 227             /** \brief Same as the element in Picture coding extension */
 228             unsigned int concealment_motion_vectors     : 1;
 229             /** \brief Same as the element in Picture coding extension */
 230             unsigned int q_scale_type                   : 1;
 231             /** \brief Same as the element in Picture coding extension */
 232             unsigned int intra_vlc_format               : 1;
 233             /** \brief Same as the element in Picture coding extension */
 234             unsigned int alternate_scan                 : 1;
 235             /** \brief Same as the element in Picture coding extension */
 236             unsigned int repeat_first_field             : 1;
 237             /** \brief Same as the element in Picture coding extension */
 238             unsigned int progressive_frame              : 1;
 239             /** \brief Same as the element in Picture coding extension */
 240             unsigned int composite_display_flag         : 1;
 241         } bits;
 242         unsigned int value;
 243     } picture_coding_extension;
 244
 245     /* \brief Parameters for composite display
 246      *
 247      * Valid only when omposite_display_flag is 1
 248      */
 249     union {
 250         struct {
 251             /** \brief Same as the element in Picture coding extension */
 252             unsigned int v_axis                         : 1;
 253             /** \brief Same as the element in Picture coding extension */
 254             unsigned int field_sequence                 : 3;
 255             /** \brief Same as the element in Picture coding extension */
 256             unsigned int sub_carrier                    : 1;
 257             /** \brief Same as the element in Picture coding extension */
 258             unsigned int burst_amplitude                : 7;
 259             /** \brief Same as the element in Picture coding extension */
 260             unsigned int sub_carrier_phase              : 8;
 261         } bits;
 262         unsigned int value;
 263     } composite_display;
 264 } VAEncPictureParameterBufferMPEG2;
 265
 266 /**
 267  * \brief Slice parameter for MPEG-2 encoding
 268  *
 269  */
 270 typedef struct _VAEncSliceParameterBufferMPEG2 {
 271     /** \brief Starting MB address for this slice. */
 272     unsigned int macroblock_address;
 273     /** \brief Number of macroblocks in this slice. */
 274     unsigned int num_macroblocks;
 275     /** \brief Same as the element in slice() */
 276     int quantiser_scale_code;
 277     /** \brief Flag to indicate intra slice */
 278     int is_intra_slice;
 279 } VAEncSliceParameterBufferMPEG2;
 280
 281 /**@}*/
 282
 283 #ifdef __cplusplus
 284 }
 285 #endif
 286
 287 #endif /* _VA_ENC_MPEG2_H_ */