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22 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 * Video Acceleration (VA) API Specification
28 * <jonathan.bian@intel.com>
31 * rev 0.10 (12/10/2006 Jonathan Bian) - Initial draft
32 * rev 0.11 (12/15/2006 Jonathan Bian) - Fixed some errors
33 * rev 0.12 (02/05/2007 Jonathan Bian) - Added VC-1 data structures for slice level decode
34 * rev 0.13 (02/28/2007 Jonathan Bian) - Added GetDisplay()
35 * rev 0.14 (04/13/2007 Jonathan Bian) - Fixed MPEG-2 PictureParameter structure, cleaned up a few funcs.
36 * rev 0.15 (04/20/2007 Jonathan Bian) - Overhauled buffer management
37 * rev 0.16 (05/02/2007 Jonathan Bian) - Added error codes and fixed some issues with configuration
38 * rev 0.17 (05/07/2007 Jonathan Bian) - Added H.264/AVC data structures for slice level decode.
39 * rev 0.18 (05/14/2007 Jonathan Bian) - Added data structures for MPEG-4 slice level decode
40 * and MPEG-2 motion compensation.
41 * rev 0.19 (08/06/2007 Jonathan Bian) - Removed extra type for bitplane data.
42 * rev 0.20 (08/08/2007 Jonathan Bian) - Added missing fields to VC-1 PictureParameter structure.
43 * rev 0.21 (08/20/2007 Jonathan Bian) - Added image and subpicture support.
44 * rev 0.22 (08/27/2007 Jonathan Bian) - Added support for chroma-keying and global alpha.
45 * rev 0.23 (09/11/2007 Jonathan Bian) - Fixed some issues with images and subpictures.
46 * rev 0.24 (09/18/2007 Jonathan Bian) - Added display attributes.
47 * rev 0.25 (10/18/2007 Jonathan Bian) - Changed to use IDs only for some types.
48 * rev 0.26 (11/07/2007 Waldo Bastian) - Change vaCreateBuffer semantics
49 * rev 0.27 (11/19/2007 Matt Sottek) - Added DeriveImage
50 * rev 0.28 (12/06/2007 Jonathan Bian) - Added new versions of PutImage and AssociateSubpicture
52 * rev 0.29 (02/07/2008 Jonathan Bian) - VC1 parameter fixes,
53 * added VA_STATUS_ERROR_RESOLUTION_NOT_SUPPORTED
54 * rev 0.30 (03/01/2009 Jonathan Bian) - Added encoding support for H.264 BP and MPEG-4 SP and fixes
55 * for ISO C conformance.
58 * Some concepts borrowed from XvMC and XvImage.
59 * Waldo Bastian (Intel), Matt Sottek (Intel), Austin Yuan (Intel), and Gwenole Beauchesne (SDS)
60 * contributed to various aspects of the API.
73 The VA API is intended to provide an interface between a video decode/encode/display
74 application (client) and a hardware accelerator (server), to off-load
75 video decode/encode/display operations from the host to the hardware accelerator at various
78 The basic operation steps are:
80 - Negotiate a mutually acceptable configuration with the server to lock
81 down profile, entrypoints, and other attributes that will not change on
82 a frame-by-frame basis.
83 - Create a decode context which represents a "virtualized" hardware decode
85 - Get and fill decode buffers with picture level, slice level and macroblock
86 level data (depending on entrypoints)
87 - Pass the decode buffers to the server to decode the current frame
89 Initialization & Configuration Management
91 - Find out supported profiles
92 - Find out entrypoints for a given profile
93 - Find out configuration attributes for a given profile/entrypoint pair
94 - Create a configuration for use by the decoder
98 typedef void* VADisplay; /* window system dependent */
100 typedef int VAStatus; /* Return status type from functions */
101 /* Values for the return status */
102 #define VA_STATUS_SUCCESS 0x00000000
103 #define VA_STATUS_ERROR_OPERATION_FAILED 0x00000001
104 #define VA_STATUS_ERROR_ALLOCATION_FAILED 0x00000002
105 #define VA_STATUS_ERROR_INVALID_DISPLAY 0x00000003
106 #define VA_STATUS_ERROR_INVALID_CONFIG 0x00000004
107 #define VA_STATUS_ERROR_INVALID_CONTEXT 0x00000005
108 #define VA_STATUS_ERROR_INVALID_SURFACE 0x00000006
109 #define VA_STATUS_ERROR_INVALID_BUFFER 0x00000007
110 #define VA_STATUS_ERROR_INVALID_IMAGE 0x00000008
111 #define VA_STATUS_ERROR_INVALID_SUBPICTURE 0x00000009
112 #define VA_STATUS_ERROR_ATTR_NOT_SUPPORTED 0x0000000a
113 #define VA_STATUS_ERROR_MAX_NUM_EXCEEDED 0x0000000b
114 #define VA_STATUS_ERROR_UNSUPPORTED_PROFILE 0x0000000c
115 #define VA_STATUS_ERROR_UNSUPPORTED_ENTRYPOINT 0x0000000d
116 #define VA_STATUS_ERROR_UNSUPPORTED_RT_FORMAT 0x0000000e
117 #define VA_STATUS_ERROR_UNSUPPORTED_BUFFERTYPE 0x0000000f
118 #define VA_STATUS_ERROR_SURFACE_BUSY 0x00000010
119 #define VA_STATUS_ERROR_FLAG_NOT_SUPPORTED 0x00000011
120 #define VA_STATUS_ERROR_INVALID_PARAMETER 0x00000012
121 #define VA_STATUS_ERROR_RESOLUTION_NOT_SUPPORTED 0x00000013
122 #define VA_STATUS_ERROR_UNKNOWN 0xFFFFFFFF
125 * Returns a short english description of error_status
127 const char *vaErrorStr(VAStatus error_status);
131 * A display must be obtained by calling vaGetDisplay() before calling
132 * vaInitialize() and other functions. This connects the API to the
133 * native window system.
134 * For X Windows, native_dpy would be from XOpenDisplay()
136 typedef void* NativeDisplay; /* window system dependent */
139 * Initialize the library
141 VAStatus vaInitialize (
143 int *major_version, /* out */
144 int *minor_version /* out */
148 * After this call, all library internal resources will be cleaned up
150 VAStatus vaTerminate (
155 * vaQueryVendorString returns a pointer to a zero-terminated string
156 * describing some aspects of the VA implemenation on a specific
157 * hardware accelerator. The format of the returned string is vendor
158 * specific and at the discretion of the implementer.
159 * e.g. for the Intel GMA500 implementation, an example would be:
160 * "Intel GMA500 - 2.0.0.32L.0005"
162 const char *vaQueryVendorString (
166 typedef int (*VAPrivFunc)();
169 * Return a function pointer given a function name in the library.
170 * This allows private interfaces into the library
172 VAPrivFunc vaGetLibFunc (
177 /* Currently defined profiles */
180 VAProfileMPEG2Simple = 0,
181 VAProfileMPEG2Main = 1,
182 VAProfileMPEG4Simple = 2,
183 VAProfileMPEG4AdvancedSimple = 3,
184 VAProfileMPEG4Main = 4,
185 VAProfileH264Baseline = 5,
186 VAProfileH264Main = 6,
187 VAProfileH264High = 7,
188 VAProfileVC1Simple = 8,
189 VAProfileVC1Main = 9,
190 VAProfileVC1Advanced = 10,
191 VAProfileH263Baseline = 11
195 * Currently defined entrypoints
201 VAEntrypointIDCT = 3,
202 VAEntrypointMoComp = 4,
203 VAEntrypointDeblocking = 5,
204 VAEntrypointEncSlice = 6 /* slice level encode */
207 /* Currently defined configuration attribute types */
210 VAConfigAttribRTFormat = 0,
211 VAConfigAttribSpatialResidual = 1,
212 VAConfigAttribSpatialClipping = 2,
213 VAConfigAttribIntraResidual = 3,
214 VAConfigAttribEncryption = 4,
215 VAConfigAttribRateControl = 5
216 } VAConfigAttribType;
219 * Configuration attributes
220 * If there is more than one value for an attribute, a default
221 * value will be assigned to the attribute if the client does not
222 * specify the attribute when creating a configuration
224 typedef struct _VAConfigAttrib {
225 VAConfigAttribType type;
226 unsigned int value; /* OR'd flags (bits) for this attribute */
229 /* attribute value for VAConfigAttribRTFormat */
230 #define VA_RT_FORMAT_YUV420 0x00000001
231 #define VA_RT_FORMAT_YUV422 0x00000002
232 #define VA_RT_FORMAT_YUV444 0x00000004
233 #define VA_RT_FORMAT_PROTECTED 0x80000000
235 /* attribute value for VAConfigAttribRateControl */
236 #define VA_RC_NONE 0x00000001
237 #define VA_RC_CBR 0x00000002
238 #define VA_RC_VBR 0x00000004
241 * if an attribute is not applicable for a given
242 * profile/entrypoint pair, then set the value to the following
244 #define VA_ATTRIB_NOT_SUPPORTED 0x80000000
246 /* Get maximum number of profiles supported by the implementation */
247 int vaMaxNumProfiles (
251 /* Get maximum number of entrypoints supported by the implementation */
252 int vaMaxNumEntrypoints (
256 /* Get maximum number of attributs supported by the implementation */
257 int vaMaxNumConfigAttributes (
262 * Query supported profiles
263 * The caller must provide a "profile_list" array that can hold at
264 * least vaMaxNumProfile() entries. The actual number of profiles
265 * returned in "profile_list" is returned in "num_profile".
267 VAStatus vaQueryConfigProfiles (
269 VAProfile *profile_list, /* out */
270 int *num_profiles /* out */
274 * Query supported entrypoints for a given profile
275 * The caller must provide an "entrypoint_list" array that can hold at
276 * least vaMaxNumEntrypoints() entries. The actual number of entrypoints
277 * returned in "entrypoint_list" is returned in "num_entrypoints".
279 VAStatus vaQueryConfigEntrypoints (
282 VAEntrypoint *entrypoint_list, /* out */
283 int *num_entrypoints /* out */
287 * Get attributes for a given profile/entrypoint pair
288 * The caller must provide an "attrib_list" with all attributes to be
289 * retrieved. Upon return, the attributes in "attrib_list" have been
290 * updated with their value. Unknown attributes or attributes that are
291 * not supported for the given profile/entrypoint pair will have their
292 * value set to VA_ATTRIB_NOT_SUPPORTED
294 VAStatus vaGetConfigAttributes (
297 VAEntrypoint entrypoint,
298 VAConfigAttrib *attrib_list, /* in/out */
302 /* Generic ID type, can be re-typed for specific implementation */
303 typedef unsigned int VAGenericID;
305 typedef VAGenericID VAConfigID;
308 * Create a configuration for the decode pipeline
309 * it passes in the attribute list that specifies the attributes it cares
310 * about, with the rest taking default values.
312 VAStatus vaCreateConfig (
315 VAEntrypoint entrypoint,
316 VAConfigAttrib *attrib_list,
318 VAConfigID *config_id /* out */
322 * Free resources associdated with a given config
324 VAStatus vaDestroyConfig (
330 * Query all attributes for a given configuration
331 * The profile of the configuration is returned in "profile"
332 * The entrypoint of the configuration is returned in "entrypoint"
333 * The caller must provide an "attrib_list" array that can hold at least
334 * vaMaxNumConfigAttributes() entries. The actual number of attributes
335 * returned in "attrib_list" is returned in "num_attribs"
337 VAStatus vaQueryConfigAttributes (
339 VAConfigID config_id,
340 VAProfile *profile, /* out */
341 VAEntrypoint *entrypoint, /* out */
342 VAConfigAttrib *attrib_list,/* out */
343 int *num_attribs /* out */
348 * Contexts and Surfaces
350 * Context represents a "virtual" video decode pipeline. Surfaces are render
351 * targets for a given context. The data in the surfaces are not accessible
352 * to the client and the internal data format of the surface is implementatin
355 * Surfaces will be bound to a context when the context is created. Once
356 * a surface is bound to a given context, it can not be used to create
357 * another context. The association is removed when the context is destroyed
359 * Both contexts and surfaces are identified by unique IDs and its
360 * implementation specific internals are kept opaque to the clients
363 typedef VAGenericID VAContextID;
365 typedef VAGenericID VASurfaceID;
367 #define VA_INVALID_SURFACE -1
370 * vaCreateSurfaces - Create an array of surfaces used for decode and display
372 * width: surface width
373 * height: surface height
374 * format: VA_RT_FORMAT_YUV420, VA_RT_FORMAT_YUV422 or VA_RT_FORMAT_YUV444
375 * num_surfaces: number of surfaces to be created
376 * surfaces: array of surfaces created upon return
378 VAStatus vaCreateSurfaces (
384 VASurfaceID *surfaces /* out */
388 * vaDestroySurfaces - Destroy resources associated with surfaces.
389 * Surfaces can only be destroyed after the context associated has been
392 * surfaces: array of surfaces to destroy
393 * num_surfaces: number of surfaces in the array to be destroyed.
395 VAStatus vaDestroySurfaces (
397 VASurfaceID *surfaces,
401 #define VA_PROGRESSIVE 0x1
403 * vaCreateContext - Create a context
405 * config_id: configuration for the context
406 * picture_width: coded picture width
407 * picture_height: coded picture height
408 * flag: any combination of the following:
409 * VA_PROGRESSIVE (only progressive frame pictures in the sequence when set)
410 * render_targets: render targets (surfaces) tied to the context
411 * num_render_targets: number of render targets in the above array
412 * context: created context id upon return
414 VAStatus vaCreateContext (
416 VAConfigID config_id,
420 VASurfaceID *render_targets,
421 int num_render_targets,
422 VAContextID *context /* out */
426 * vaDestroyContext - Destroy a context
428 * context: context to be destroyed
430 VAStatus vaDestroyContext (
437 * Buffers are used to pass various types of data from the
438 * client to the server. The server maintains a data store
439 * for each buffer created, and the client idenfies a buffer
440 * through a unique buffer id assigned by the server.
443 typedef VAGenericID VABufferID;
447 VAPictureParameterBufferType = 0,
448 VAIQMatrixBufferType = 1,
449 VABitPlaneBufferType = 2,
450 VASliceGroupMapBufferType = 3,
451 VASliceParameterBufferType = 4,
452 VASliceDataBufferType = 5,
453 VAMacroblockParameterBufferType = 6,
454 VAResidualDataBufferType = 7,
455 VADeblockingParameterBufferType = 8,
456 VAImageBufferType = 9,
457 VAProtectedSliceDataBufferType = 10,
458 /* Following are encode buffer types */
459 VAEncCodedBufferType = 21,
460 VAEncSequenceParameterBufferType = 22,
461 VAEncPictureParameterBufferType = 23,
462 VAEncSliceParameterBufferType = 24,
463 VAEncH264VUIBufferType = 25,
464 VAEncH264SEIBufferType = 26,
468 /****************************
469 * MPEG-2 data structures
470 ****************************/
472 /* MPEG-2 Picture Parameter Buffer */
474 * For each frame or field, and before any slice data, a single
475 * picture parameter buffer must be send.
477 typedef struct _VAPictureParameterBufferMPEG2
479 unsigned short horizontal_size;
480 unsigned short vertical_size;
481 VASurfaceID forward_reference_picture;
482 VASurfaceID backward_reference_picture;
483 /* meanings of the following fields are the same as in the standard */
484 int picture_coding_type;
485 int f_code; /* pack all four fcode into this */
488 unsigned int intra_dc_precision : 2;
489 unsigned int picture_structure : 2;
490 unsigned int top_field_first : 1;
491 unsigned int frame_pred_frame_dct : 1;
492 unsigned int concealment_motion_vectors : 1;
493 unsigned int q_scale_type : 1;
494 unsigned int intra_vlc_format : 1;
495 unsigned int alternate_scan : 1;
496 unsigned int repeat_first_field : 1;
497 unsigned int progressive_frame : 1;
498 unsigned int is_first_field : 1; /* indicate whether the current field
499 * is the first field for field picture
503 } picture_coding_extension;
504 } VAPictureParameterBufferMPEG2;
506 /* MPEG-2 Inverse Quantization Matrix Buffer */
507 typedef struct _VAIQMatrixBufferMPEG2
509 int load_intra_quantiser_matrix;
510 int load_non_intra_quantiser_matrix;
511 int load_chroma_intra_quantiser_matrix;
512 int load_chroma_non_intra_quantiser_matrix;
513 unsigned char intra_quantiser_matrix[64];
514 unsigned char non_intra_quantiser_matrix[64];
515 unsigned char chroma_intra_quantiser_matrix[64];
516 unsigned char chroma_non_intra_quantiser_matrix[64];
517 } VAIQMatrixBufferMPEG2;
520 * There will be cases where the bitstream buffer will not have enough room to hold
521 * the data for the entire slice, and the following flags will be used in the slice
522 * parameter to signal to the server for the possible cases.
523 * If a slice parameter buffer and slice data buffer pair is sent to the server with
524 * the slice data partially in the slice data buffer (BEGIN and MIDDLE cases below),
525 * then a slice parameter and data buffer needs to be sent again to complete this slice.
527 #define VA_SLICE_DATA_FLAG_ALL 0x00 /* whole slice is in the buffer */
528 #define VA_SLICE_DATA_FLAG_BEGIN 0x01 /* The beginning of the slice is in the buffer but the end if not */
529 #define VA_SLICE_DATA_FLAG_MIDDLE 0x02 /* Neither beginning nor end of the slice is in the buffer */
530 #define VA_SLICE_DATA_FLAG_END 0x04 /* end of the slice is in the buffer */
532 /* MPEG-2 Slice Parameter Buffer */
533 typedef struct _VASliceParameterBufferMPEG2
535 unsigned int slice_data_size;/* number of bytes in the slice data buffer for this slice */
536 unsigned int slice_data_offset;/* the offset to the first byte of slice data */
537 unsigned int slice_data_flag; /* see VA_SLICE_DATA_FLAG_XXX defintions */
538 unsigned int macroblock_offset;/* the offset to the first bit of MB from the first byte of slice data */
539 unsigned int slice_vertical_position;
540 int quantiser_scale_code;
541 int intra_slice_flag;
542 } VASliceParameterBufferMPEG2;
544 /* MPEG-2 Macroblock Parameter Buffer */
545 typedef struct _VAMacroblockParameterBufferMPEG2
547 unsigned short macroblock_address;
549 * macroblock_address (in raster scan order)
551 * bottom-right: picture-height-in-mb*picture-width-in-mb - 1
553 unsigned char macroblock_type; /* see definition below */
556 unsigned int frame_motion_type : 2;
557 unsigned int field_motion_type : 2;
558 unsigned int dct_type : 1;
562 unsigned char motion_vertical_field_select;
564 * motion_vertical_field_select:
565 * see section 6.3.17.2 in the spec
566 * only the lower 4 bits are used
567 * bit 0: first vector forward
568 * bit 1: first vector backward
569 * bit 2: second vector forward
570 * bit 3: second vector backward
572 short PMV[2][2][2]; /* see Table 7-7 in the spec */
573 unsigned short coded_block_pattern;
575 * The bitplanes for coded_block_pattern are described
576 * in Figure 6.10-12 in the spec
579 /* Number of skipped macroblocks after this macroblock */
580 unsigned short num_skipped_macroblocks;
581 } VAMacroblockParameterBufferMPEG2;
584 * OR'd flags for macroblock_type (section 6.3.17.1 in the spec)
586 #define VA_MB_TYPE_MOTION_FORWARD 0x02
587 #define VA_MB_TYPE_MOTION_BACKWARD 0x04
588 #define VA_MB_TYPE_MOTION_PATTERN 0x08
589 #define VA_MB_TYPE_MOTION_INTRA 0x10
592 * MPEG-2 Residual Data Buffer
593 * For each macroblock, there wil be 64 shorts (16-bit) in the
594 * residual data buffer
597 /****************************
598 * MPEG-4 Part 2 data structures
599 ****************************/
601 /* MPEG-4 Picture Parameter Buffer */
603 * For each frame or field, and before any slice data, a single
604 * picture parameter buffer must be send.
606 typedef struct _VAPictureParameterBufferMPEG4
608 unsigned short vop_width;
609 unsigned short vop_height;
610 VASurfaceID forward_reference_picture;
611 VASurfaceID backward_reference_picture;
614 unsigned char short_video_header : 1;
615 unsigned char chroma_format : 2;
616 unsigned char interlaced : 1;
617 unsigned char obmc_disable : 1;
618 unsigned char sprite_enable : 2;
619 unsigned char sprite_warping_accuracy : 2;
620 unsigned char quant_type : 1;
621 unsigned char quarter_sample : 1;
622 unsigned char data_partitioned : 1;
623 unsigned char reversible_vlc : 1;
625 unsigned short value;
627 unsigned char no_of_sprite_warping_points;
628 short sprite_trajectory_du[3];
629 short sprite_trajectory_dv[3];
630 unsigned char quant_precision;
633 unsigned char vop_coding_type : 2;
634 unsigned char backward_reference_vop_coding_type : 2;
635 unsigned char vop_rounding_type : 1;
636 unsigned char intra_dc_vlc_thr : 3;
637 unsigned char top_field_first : 1;
638 unsigned char alternate_vertical_scan_flag : 1;
640 unsigned short value;
642 unsigned char vop_fcode_forward;
643 unsigned char vop_fcode_backward;
644 /* short header related */
645 unsigned char num_gobs_in_vop;
646 unsigned char num_macroblocks_in_gob;
647 /* for direct mode prediction */
650 } VAPictureParameterBufferMPEG4;
652 /* MPEG-4 Inverse Quantization Matrix Buffer */
653 typedef struct _VAIQMatrixBufferMPEG4
655 int load_intra_quant_mat;
656 int load_non_intra_quant_mat;
657 unsigned char intra_quant_mat[64];
658 unsigned char non_intra_quant_mat[64];
659 } VAIQMatrixBufferMPEG4;
661 /* MPEG-4 Slice Parameter Buffer */
662 typedef struct _VASliceParameterBufferMPEG4
664 unsigned int slice_data_size;/* number of bytes in the slice data buffer for this slice */
665 unsigned int slice_data_offset;/* the offset to the first byte of slice data */
666 unsigned int slice_data_flag; /* see VA_SLICE_DATA_FLAG_XXX defintions */
667 unsigned int macroblock_offset;/* the offset to the first bit of MB from the first byte of slice data */
668 unsigned int macroblock_number;
670 } VASliceParameterBufferMPEG4;
676 typedef enum /* see 7.1.1.32 */
679 VAMvMode1MvHalfPel = 1,
680 VAMvMode1MvHalfPelBilinear = 2,
682 VAMvModeIntensityCompensation = 4
685 /* VC-1 Picture Parameter Buffer */
687 * For each picture, and before any slice data, a picture parameter
688 * buffer must be send. Multiple picture parameter buffers may be
689 * sent for a single picture. In that case picture parameters will
690 * apply to all slice data that follow it until a new picture
691 * parameter buffer is sent.
694 * pic_quantizer_type should be set to the applicable quantizer
695 * type as defined by QUANTIZER (J.1.19) and either
696 * PQUANTIZER (7.1.1.8) or PQINDEX (7.1.1.6)
698 typedef struct _VAPictureParameterBufferVC1
700 VASurfaceID forward_reference_picture;
701 VASurfaceID backward_reference_picture;
702 /* if out-of-loop post-processing is done on the render
703 target, then we need to keep the in-loop decoded
704 picture as a reference picture */
705 VASurfaceID inloop_decoded_picture;
707 /* sequence layer for AP or meta data for SP and MP */
710 unsigned char interlace : 1; /* SEQUENCE_LAYER::INTERLACE */
711 unsigned char syncmarker : 1;/* METADATA::SYNCMARKER */
712 unsigned char overlap : 1;/* METADATA::OVERLAP */
717 unsigned short coded_width; /* ENTRY_POINT_LAYER::CODED_WIDTH */
718 unsigned short coded_height; /* ENTRY_POINT_LAYER::CODED_HEIGHT */
719 unsigned char closed_entry; /* ENTRY_POINT_LAYER::CLOSED_ENTRY */
720 unsigned char broken_link; /* ENTRY_POINT_LAYER::BROKEN_LINK */
721 unsigned char loopfilter; /* ENTRY_POINT_LAYER::LOOPFILTER */
722 unsigned char conditional_overlap_flag; /* ENTRY_POINT_LAYER::CONDOVER */
723 unsigned char fast_uvmc_flag; /* ENTRY_POINT_LAYER::FASTUVMC */
726 unsigned char luma_flag : 1; /* ENTRY_POINT_LAYER::RANGE_MAPY_FLAG */
727 unsigned char luma : 3; /* ENTRY_POINT_LAYER::RANGE_MAPY */
728 unsigned char chroma_flag : 1; /* ENTRY_POINT_LAYER::RANGE_MAPUV_FLAG */
729 unsigned char chroma : 3; /* ENTRY_POINT_LAYER::RANGE_MAPUV */
732 } range_mapping_fields;
734 unsigned char b_picture_fraction; /* PICTURE_LAYER::BFRACTION */
735 unsigned char cbp_table; /* PICTURE_LAYER::CBPTAB/ICBPTAB */
736 unsigned char mb_mode_table; /* PICTURE_LAYER::MBMODETAB */
737 unsigned char range_reduction_frame;/* PICTURE_LAYER::RANGEREDFRM */
738 unsigned char rounding_control; /* PICTURE_LAYER::RNDCTRL */
739 unsigned char post_processing; /* PICTURE_LAYER::POSTPROC */
740 unsigned char picture_resolution_index; /* PICTURE_LAYER::RESPIC */
741 unsigned char luma_scale; /* PICTURE_LAYER::LUMSCALE */
742 unsigned char luma_shift; /* PICTURE_LAYER::LUMSHIFT */
745 unsigned char picture_type : 2; /* PICTURE_LAYER::PTYPE */
746 unsigned char frame_coding_mode : 3; /* PICTURE_LAYER::FCM */
747 unsigned char top_field_first : 1; /* PICTURE_LAYER::TFF */
748 unsigned char is_first_field : 1; /* set to 1 if it is the first field */
749 unsigned char intensity_compensation : 1; /* PICTURE_LAYER::INTCOMP */
755 unsigned char mv_type_mb : 1; /* PICTURE::MVTYPEMB */
756 unsigned char direct_mb : 1; /* PICTURE::DIRECTMB */
757 unsigned char skip_mb : 1; /* PICTURE::SKIPMB */
758 unsigned char field_tx : 1; /* PICTURE::FIELDTX */
759 unsigned char forward_mb : 1; /* PICTURE::FORWARDMB */
760 unsigned char ac_pred : 1; /* PICTURE::ACPRED */
761 unsigned char overflags : 1; /* PICTURE::OVERFLAGS */
767 unsigned char bp_mv_type_mb : 1; /* PICTURE::MVTYPEMB */
768 unsigned char bp_direct_mb : 1; /* PICTURE::DIRECTMB */
769 unsigned char bp_skip_mb : 1; /* PICTURE::SKIPMB */
770 unsigned char bp_field_tx : 1; /* PICTURE::FIELDTX */
771 unsigned char bp_forward_mb : 1; /* PICTURE::FORWARDMB */
772 unsigned char bp_ac_pred : 1; /* PICTURE::ACPRED */
773 unsigned char bp_overflags : 1; /* PICTURE::OVERFLAGS */
776 } bitplane_present; /* signal what bitplane is being passed via the bitplane buffer */
779 unsigned char reference_distance_flag : 1;/* PICTURE_LAYER::REFDIST_FLAG */
780 unsigned char reference_distance : 5;/* PICTURE_LAYER::REFDIST */
781 unsigned char num_reference_pictures: 1;/* PICTURE_LAYER::NUMREF */
782 unsigned char reference_field_pic_indicator : 1;/* PICTURE_LAYER::REFFIELD */
784 unsigned short value;
788 unsigned char mv_mode : 3; /* PICTURE_LAYER::MVMODE */
789 unsigned char mv_mode2 : 3; /* PICTURE_LAYER::MVMODE2 */
790 unsigned char mv_table : 3; /* PICTURE_LAYER::MVTAB/IMVTAB */
791 unsigned char two_mv_block_pattern_table: 2; /* PICTURE_LAYER::2MVBPTAB */
792 unsigned char four_mv_switch : 1; /* PICTURE_LAYER::4MVSWITCH */
793 unsigned char four_mv_block_pattern_table : 2; /* PICTURE_LAYER::4MVBPTAB */
794 unsigned char extended_mv_flag : 1; /* ENTRY_POINT_LAYER::EXTENDED_MV */
795 unsigned char extended_mv_range : 2; /* PICTURE_LAYER::MVRANGE */
796 unsigned char extended_dmv_flag : 1; /* ENTRY_POCHAR_LAYER::EXTENDED_DMV */
797 unsigned char extended_dmv_range : 2; /* PICTURE_LAYER::DMVRANGE */
803 unsigned char dquant : 2; /* ENTRY_POINT_LAYER::DQUANT */
804 unsigned char quantizer : 2; /* ENTRY_POINT_LAYER::QUANTIZER */
805 unsigned char half_qp : 1; /* PICTURE_LAYER::HALFQP */
806 unsigned char pic_quantizer_scale : 5;/* PICTURE_LAYER::PQUANT */
807 unsigned char pic_quantizer_type : 1;/* PICTURE_LAYER::PQUANTIZER */
808 unsigned char dq_frame : 1; /* VOPDQUANT::DQUANTFRM */
809 unsigned char dq_profile : 2; /* VOPDQUANT::DQPROFILE */
810 unsigned char dq_sb_edge : 2; /* VOPDQUANT::DQSBEDGE */
811 unsigned char dq_db_edge : 2; /* VOPDQUANT::DQDBEDGE */
812 unsigned char dq_binary_level : 1; /* VOPDQUANT::DQBILEVEL */
813 unsigned char alt_pic_quantizer : 5;/* VOPDQUANT::ALTPQUANT */
816 } pic_quantizer_fields;
819 unsigned char variable_sized_transform_flag : 1;/* ENTRY_POINT_LAYER::VSTRANSFORM */
820 unsigned char mb_level_transform_type_flag : 1;/* PICTURE_LAYER::TTMBF */
821 unsigned char frame_level_transform_type : 2;/* PICTURE_LAYER::TTFRM */
822 unsigned char transform_ac_codingset_idx1 : 2;/* PICTURE_LAYER::TRANSACFRM */
823 unsigned char transform_ac_codingset_idx2 : 2;/* PICTURE_LAYER::TRANSACFRM2 */
824 unsigned char intra_transform_dc_table : 1;/* PICTURE_LAYER::TRANSDCTAB */
826 unsigned short value;
828 } VAPictureParameterBufferVC1;
830 /* VC-1 Bitplane Buffer
831 There will be at most three bitplanes coded in any picture header. To send
832 the bitplane data more efficiently, each byte is divided in two nibbles, with
833 each nibble carrying three bitplanes for one macroblock. The following table
834 shows the bitplane data arrangement within each nibble based on the picture
837 Picture Type Bit3 Bit2 Bit1 Bit0
838 I or BI OVERFLAGS ACPRED FIELDTX
839 P MYTYPEMB SKIPMB DIRECTMB
840 B FORWARDMB SKIPMB DIRECTMB
842 Within each byte, the lower nibble is for the first MB and the upper nibble is
843 for the second MB. E.g. the lower nibble of the first byte in the bitplane
844 buffer is for Macroblock #1 and the upper nibble of the first byte is for
845 Macroblock #2 in the first row.
848 /* VC-1 Slice Parameter Buffer */
849 typedef struct _VASliceParameterBufferVC1
851 unsigned int slice_data_size;/* number of bytes in the slice data buffer for this slice */
852 unsigned int slice_data_offset;/* the offset to the first byte of slice data */
853 unsigned int slice_data_flag; /* see VA_SLICE_DATA_FLAG_XXX defintions */
854 unsigned int macroblock_offset;/* the offset to the first bit of MB from the first byte of slice data */
855 unsigned int slice_vertical_position;
856 } VASliceParameterBufferVC1;
858 /* VC-1 Slice Data Buffer */
860 This is simplely a buffer containing raw bit-stream bytes
863 /****************************
864 * H.264/AVC data structures
865 ****************************/
867 typedef struct _VAPictureH264
869 VASurfaceID picture_id;
871 unsigned int TopFieldOrderCnt;
872 unsigned int BottomFieldOrderCnt;
874 /* flags in VAPictureH264 could be OR of the following */
875 #define VA_PICTURE_H264_INVALID 0x00000001
876 #define VA_PICTURE_H264_TOP_FIELD 0x00000002
877 #define VA_PICTURE_H264_BOTTOM_FIELD 0x00000004
878 #define VA_PICTURE_H264_SHORT_TERM_REFERENCE 0x00000008
879 #define VA_PICTURE_H264_LONG_TERM_REFERENCE 0x00000010
881 /* H.264 Picture Parameter Buffer */
883 * For each picture, and before any slice data, a single
884 * picture parameter buffer must be send.
886 typedef struct _VAPictureParameterBufferH264
888 VAPictureH264 CurrPic;
889 VAPictureH264 ReferenceFrames[16]; /* in DPB */
890 unsigned short picture_width_in_mbs_minus1;
891 unsigned short picture_height_in_mbs_minus1;
892 unsigned char bit_depth_luma_minus8;
893 unsigned char bit_depth_chroma_minus8;
894 unsigned char num_ref_frames;
897 unsigned char chroma_format_idc : 2;
898 unsigned char residual_colour_transform_flag : 1;
899 unsigned char frame_mbs_only_flag : 1;
900 unsigned char mb_adaptive_frame_field_flag : 1;
901 unsigned char direct_8x8_inference_flag : 1;
902 unsigned char MinLumaBiPredSize8x8 : 1; /* see A.3.3.2 */
906 unsigned char num_slice_groups_minus1;
907 unsigned char slice_group_map_type;
908 signed char pic_init_qp_minus26;
909 signed char chroma_qp_index_offset;
910 signed char second_chroma_qp_index_offset;
913 unsigned char entropy_coding_mode_flag : 1;
914 unsigned char weighted_pred_flag : 1;
915 unsigned char weighted_bipred_idc : 2;
916 unsigned char transform_8x8_mode_flag : 1;
917 unsigned char field_pic_flag : 1;
918 unsigned char constrained_intra_pred_flag : 1;
922 unsigned short frame_num;
923 } VAPictureParameterBufferH264;
925 /* H.264 Inverse Quantization Matrix Buffer */
926 typedef struct _VAIQMatrixBufferH264
928 unsigned char ScalingList4x4[6][16];
929 unsigned char ScalingList8x8[2][64];
930 } VAIQMatrixBufferH264;
933 * H.264 Slice Group Map Buffer
934 * When VAPictureParameterBufferH264::num_slice_group_minus1 is not equal to 0,
935 * A slice group map buffer should be sent for each picture if required. The buffer
936 * is sent only when there is a change in the mapping values.
937 * The slice group map buffer map "map units" to slice groups as specified in
938 * section 8.2.2 of the H.264 spec. The buffer will contain one byte for each macroblock
939 * in raster scan order
942 /* H.264 Slice Parameter Buffer */
943 typedef struct _VASliceParameterBufferH264
945 unsigned int slice_data_size;/* number of bytes in the slice data buffer for this slice */
946 unsigned int slice_data_offset;/* the offset to the NAL start code for this slice */
947 unsigned int slice_data_flag; /* see VA_SLICE_DATA_FLAG_XXX defintions */
948 unsigned short slice_data_bit_offset; /* bit offset from NAL start code to the beginning of slice data */
949 unsigned short first_mb_in_slice;
950 unsigned char slice_type;
951 unsigned char direct_spatial_mv_pred_flag;
952 unsigned char num_ref_idx_l0_active_minus1;
953 unsigned char num_ref_idx_l1_active_minus1;
954 unsigned char cabac_init_idc;
956 unsigned char disable_deblocking_filter_idc;
957 char slice_alpha_c0_offset_div2;
958 char slice_beta_offset_div2;
959 VAPictureH264 RefPicList0[32]; /* See 8.2.4.2 */
960 VAPictureH264 RefPicList1[32]; /* See 8.2.4.2 */
961 unsigned char luma_log2_weight_denom;
962 unsigned char chroma_log2_weight_denom;
963 unsigned char luma_weight_l0_flag;
964 short luma_weight_l0[32];
965 short luma_offset_l0[32];
966 unsigned char chroma_weight_l0_flag;
967 short chroma_weight_l0[32][2];
968 short chroma_offset_l0[32][2];
969 unsigned char luma_weight_l1_flag;
970 short luma_weight_l1[32];
971 short luma_offset_l1[32];
972 unsigned char chroma_weight_l1_flag;
973 short chroma_weight_l1[32][2];
974 short chroma_offset_l1[32][2];
975 } VASliceParameterBufferH264;
977 /****************************
978 * Common encode data structures
979 ****************************/
982 VAEncPictureTypeIntra = 0,
983 VAEncPictureTypePredictive = 1,
984 VAEncPictureTypeBidirectional = 2,
987 /* Encode Slice Parameter Buffer */
988 typedef struct _VAEncSliceParameterBuffer
990 unsigned int start_row_number; /* starting MB row number for this slice */
991 unsigned int slice_height; /* slice height measured in MB */
994 unsigned char is_intra : 1;
995 unsigned char disable_deblocking_filter_idc : 2;
999 } VAEncSliceParameterBuffer;
1001 /****************************
1002 * H.264 specific encode data structures
1003 ****************************/
1005 typedef struct _VAEncSequenceParameterBufferH264
1007 unsigned char seq_parameter_set_id;
1008 unsigned char level_idc;
1009 unsigned int intra_period;
1010 unsigned int picture_width_in_mbs;
1011 unsigned int picture_height_in_mbs;
1012 unsigned int bits_per_second;
1013 unsigned int frame_rate;
1014 unsigned int initial_qp;
1015 unsigned int min_qp;
1016 unsigned int basic_unit_size;
1017 unsigned char vui_flag;
1018 } VAEncSequenceParameterBufferH264;
1020 typedef struct _VAEncPictureParameterBufferH264
1022 VASurfaceID reference_picture;
1023 VASurfaceID reconstructed_picture;
1024 VABufferID coded_buf;
1025 unsigned short picture_width;
1026 unsigned short picture_height;
1027 unsigned char last_picture; /* if set to 1 it indicates the last picture in the sequence */
1028 } VAEncPictureParameterBufferH264;
1030 /****************************
1031 * H.263 specific encode data structures
1032 ****************************/
1034 typedef struct _VAEncSequenceParameterBufferH263
1036 unsigned int intra_period;
1037 unsigned int bits_per_second;
1038 unsigned int frame_rate;
1039 unsigned int initial_qp;
1040 unsigned int min_qp;
1041 } VAEncSequenceParameterBufferH263;
1043 typedef struct _VAEncPictureParameterBufferH263
1045 VASurfaceID reference_picture;
1046 VASurfaceID reconstructed_picture;
1047 VABufferID coded_buf;
1048 unsigned short picture_width;
1049 unsigned short picture_height;
1050 VAEncPictureType picture_type;
1051 } VAEncPictureParameterBufferH263;
1053 /****************************
1054 * MPEG-4 specific encode data structures
1055 ****************************/
1057 typedef struct _VAEncSequenceParameterBufferMPEG4
1059 unsigned char profile_and_level_indication;
1060 unsigned int intra_period;
1061 unsigned int video_object_layer_width;
1062 unsigned int video_object_layer_height;
1063 unsigned int vop_time_increment_resolution;
1064 unsigned int fixed_vop_rate;
1065 unsigned int fixed_vop_time_increment;
1066 unsigned int bits_per_second;
1067 unsigned int frame_rate;
1068 unsigned int initial_qp;
1069 unsigned int min_qp;
1070 } VAEncSequenceParameterBufferMPEG4;
1072 typedef struct _VAEncPictureParameterBufferMPEG4
1074 VASurfaceID reference_picture;
1075 VASurfaceID reconstructed_picture;
1076 VABufferID coded_buf;
1077 unsigned short picture_width;
1078 unsigned short picture_height;
1079 unsigned int modulo_time_base; /* number of 1s */
1080 unsigned int vop_time_increment;
1081 VAEncPictureType picture_type;
1082 } VAEncPictureParameterBufferMPEG4;
1086 /* Buffer functions */
1089 * Creates a buffer for "num_elements" elements of "size" bytes and
1090 * initalize with "data".
1091 * if "data" is null, then the contents of the buffer data store
1093 * Basically there are two ways to get buffer data to the server side. One is
1094 * to call vaCreateBuffer() with a non-null "data", which results the data being
1095 * copied to the data store on the server side. A different method that
1096 * eliminates this copy is to pass null as "data" when calling vaCreateBuffer(),
1097 * and then use vaMapBuffer() to map the data store from the server side to the
1098 * client address space for access.
1099 * Note: image buffers are created by the library, not the client. Please see
1100 * vaCreateImage on how image buffers are managed.
1102 VAStatus vaCreateBuffer (
1104 VAContextID context,
1105 VABufferType type, /* in */
1106 unsigned int size, /* in */
1107 unsigned int num_elements, /* in */
1108 void *data, /* in */
1109 VABufferID *buf_id /* out */
1113 * Convey to the server how many valid elements are in the buffer.
1114 * e.g. if multiple slice parameters are being held in a single buffer,
1115 * this will communicate to the server the number of slice parameters
1116 * that are valid in the buffer.
1118 VAStatus vaBufferSetNumElements (
1120 VABufferID buf_id, /* in */
1121 unsigned int num_elements /* in */
1125 * Map data store of the buffer into the client's address space
1126 * vaCreateBuffer() needs to be called with "data" set to NULL before
1127 * calling vaMapBuffer()
1129 VAStatus vaMapBuffer (
1131 VABufferID buf_id, /* in */
1132 void **pbuf /* out */
1136 * After client making changes to a mapped data store, it needs to
1137 * "Unmap" it to let the server know that the data is ready to be
1138 * consumed by the server
1140 VAStatus vaUnmapBuffer (
1142 VABufferID buf_id /* in */
1146 * After this call, the buffer is deleted and this buffer_id is no longer valid
1147 * Only call this if the buffer is not going to be passed to vaRenderBuffer
1149 VAStatus vaDestroyBuffer (
1151 VABufferID buffer_id
1155 Render (Decode) Pictures
1157 A picture represents either a frame or a field.
1159 The Begin/Render/End sequence sends the decode buffers to the server
1163 * Get ready to decode a picture to a target surface
1165 VAStatus vaBeginPicture (
1167 VAContextID context,
1168 VASurfaceID render_target
1172 * Send decode buffers to the server.
1173 * Buffers are automatically destroyed afterwards
1175 VAStatus vaRenderPicture (
1177 VAContextID context,
1178 VABufferID *buffers,
1183 * Make the end of rendering for a picture.
1184 * The server should start processing all pending operations for this
1185 * surface. This call is non-blocking. The client can start another
1186 * Begin/Render/End sequence on a different render target.
1188 VAStatus vaEndPicture (
1200 * This function blocks until all pending operations on the render target
1201 * have been completed. Upon return it is safe to use the render target for a
1202 * different picture.
1204 VAStatus vaSyncSurface (
1206 VAContextID context,
1207 VASurfaceID render_target
1212 VASurfaceRendering = 0, /* Rendering in progress */
1213 VASurfaceDisplaying = 1, /* Displaying in progress (not safe to render into it) */
1214 /* this status is useful if surface is used as the source */
1216 VASurfaceReady = 2, /* not being rendered or displayed */
1217 VASurfaceSkipped = 4 /* Indicate a skipped frame during encode */
1221 * Find out any pending ops on the render target
1223 VAStatus vaQuerySurfaceStatus (
1225 VASurfaceID render_target,
1226 VASurfaceStatus *status /* out */
1230 * Images and Subpictures
1231 * VAImage is used to either get the surface data to client memory, or
1232 * to copy image data in client memory to a surface.
1233 * Both images, subpictures and surfaces follow the same 2D coordinate system where origin
1234 * is at the upper left corner with positive X to the right and positive Y down
1236 #define VA_FOURCC(ch0, ch1, ch2, ch3) \
1237 ((unsigned long)(unsigned char) (ch0) | ((unsigned long)(unsigned char) (ch1) << 8) | \
1238 ((unsigned long)(unsigned char) (ch2) << 16) | ((unsigned long)(unsigned char) (ch3) << 24 ))
1240 /* a few common FourCCs */
1241 #define VA_FOURCC_NV12 0x3231564E
1242 #define VA_FOURCC_AI44 0x34344149
1243 #define VA_FOURCC_RGBA 0x41424752
1244 #define VA_FOURCC_UYVY 0x59565955
1245 #define VA_FOURCC_YUY2 0x32595559
1246 #define VA_FOURCC_AYUV 0x56555941
1247 #define VA_FOURCC_NV11 0x3131564e
1248 #define VA_FOURCC_YV12 0x32315659
1249 #define VA_FOURCC_P208 0x38303250
1250 #define VA_FOURCC_IYUV 0x56555949
1253 #define VA_LSB_FIRST 1
1254 #define VA_MSB_FIRST 2
1256 typedef struct _VAImageFormat
1258 unsigned int fourcc;
1259 unsigned int byte_order; /* VA_LSB_FIRST, VA_MSB_FIRST */
1260 unsigned int bits_per_pixel;
1261 /* for RGB formats */
1262 unsigned int depth; /* significant bits per pixel */
1263 unsigned int red_mask;
1264 unsigned int green_mask;
1265 unsigned int blue_mask;
1266 unsigned int alpha_mask;
1269 typedef VAGenericID VAImageID;
1271 typedef struct _VAImage
1273 VAImageID image_id; /* uniquely identify this image */
1274 VAImageFormat format;
1275 VABufferID buf; /* image data buffer */
1277 * Image data will be stored in a buffer of type VAImageBufferType to facilitate
1278 * data store on the server side for optimal performance. The buffer will be
1279 * created by the CreateImage function, and proper storage allocated based on the image
1280 * size and format. This buffer is managed by the library implementation, and
1281 * accessed by the client through the buffer Map/Unmap functions.
1283 unsigned short width;
1284 unsigned short height;
1285 unsigned int data_size;
1286 unsigned int num_planes; /* can not be greater than 3 */
1288 * An array indicating the scanline pitch in bytes for each plane.
1289 * Each plane may have a different pitch. Maximum 3 planes for planar formats
1291 unsigned int pitches[3];
1293 * An array indicating the byte offset from the beginning of the image data
1294 * to the start of each plane.
1296 unsigned int offsets[3];
1298 /* The following fields are only needed for paletted formats */
1299 int num_palette_entries; /* set to zero for non-palette images */
1301 * Each component is one byte and entry_bytes indicates the number of components in
1302 * each entry (eg. 3 for YUV palette entries). set to zero for non-palette images
1306 * An array of ascii characters describing the order of the components within the bytes.
1307 * Only entry_bytes characters of the string are used.
1309 char component_order[4];
1312 /* Get maximum number of image formats supported by the implementation */
1313 int vaMaxNumImageFormats (
1318 * Query supported image formats
1319 * The caller must provide a "format_list" array that can hold at
1320 * least vaMaxNumImageFormats() entries. The actual number of formats
1321 * returned in "format_list" is returned in "num_formats".
1323 VAStatus vaQueryImageFormats (
1325 VAImageFormat *format_list, /* out */
1326 int *num_formats /* out */
1330 * Create a VAImage structure
1331 * The width and height fields returned in the VAImage structure may get
1332 * enlarged for some YUV formats. Upon return from this function,
1333 * image->buf has been created and proper storage allocated by the library.
1334 * The client can access the image through the Map/Unmap calls.
1336 VAStatus vaCreateImage (
1338 VAImageFormat *format,
1341 VAImage *image /* out */
1345 * Should call DestroyImage before destroying the surface it is bound to
1347 VAStatus vaDestroyImage (
1352 VAStatus vaSetImagePalette (
1356 * pointer to an array holding the palette data. The size of the array is
1357 * num_palette_entries * entry_bytes in size. The order of the components
1358 * in the palette is described by the component_order in VAImage struct
1360 unsigned char *palette
1364 * Retrive surface data into a VAImage
1365 * Image must be in a format supported by the implementation
1367 VAStatus vaGetImage (
1369 VASurfaceID surface,
1370 int x, /* coordinates of the upper left source pixel */
1372 unsigned int width, /* width and height of the region */
1373 unsigned int height,
1378 * Copy data from a VAImage to a surface
1379 * Image must be in a format supported by the implementation
1380 * Returns a VA_STATUS_ERROR_SURFACE_BUSY if the surface
1381 * shouldn't be rendered into when this is called
1382 * The source and destionation width and height are the same and
1383 * no scaling is performed with this operation.
1385 VAStatus vaPutImage (
1387 VASurfaceID surface,
1392 unsigned int height,
1398 * Similar to vaPutImage but with additional destination width
1399 * and height arguments to enable scaling
1401 VAStatus vaPutImage2 (
1403 VASurfaceID surface,
1407 unsigned int src_width,
1408 unsigned int src_height,
1411 unsigned int dest_width,
1412 unsigned int dest_height
1416 * Derive an VAImage from an existing surface.
1417 * This interface will derive a VAImage and corresponding image buffer from
1418 * an existing VA Surface. The image buffer can then be mapped/unmapped for
1419 * direct CPU access. This operation is only possible on implementations with
1420 * direct rendering capabilities and internal surface formats that can be
1421 * represented with a VAImage. When the operation is not possible this interface
1422 * will return VA_STATUS_ERROR_OPERATION_FAILED. Clients should then fall back
1423 * to using vaCreateImage + vaPutImage to accomplish the same task in an
1426 * Implementations should only return success when the resulting image buffer
1427 * would be useable with vaMap/Unmap.
1429 * When directly accessing a surface special care must be taken to insure
1430 * proper synchronization with the graphics hardware. Clients should call
1431 * vaQuerySurfaceStatus to insure that a surface is not the target of concurrent
1432 * rendering or currently being displayed by an overlay.
1434 * Additionally nothing about the contents of a surface should be assumed
1435 * following a vaPutSurface. Implementations are free to modify the surface for
1436 * scaling or subpicture blending within a call to vaPutImage.
1438 * Calls to vaPutImage or vaGetImage using the same surface from which the image
1439 * has been derived will return VA_STATUS_ERROR_SURFACE_BUSY. vaPutImage or
1440 * vaGetImage with other surfaces is supported.
1442 * An image created with vaDeriveImage should be freed with vaDestroyImage. The
1443 * image and image buffer structures will be destroyed; however, the underlying
1444 * surface will remain unchanged until freed with vaDestroySurfaces.
1446 VAStatus vaDeriveImage (
1448 VASurfaceID surface,
1449 VAImage *image /* out */
1454 * Subpicture is a special type of image that can be blended
1455 * with a surface during vaPutSurface(). Subpicture can be used to render
1456 * DVD sub-titles or closed captioning text etc.
1459 typedef VAGenericID VASubpictureID;
1461 /* Get maximum number of subpicture formats supported by the implementation */
1462 int vaMaxNumSubpictureFormats (
1466 /* flags for subpictures */
1467 #define VA_SUBPICTURE_CHROMA_KEYING 0x0001
1468 #define VA_SUBPICTURE_GLOBAL_ALPHA 0x0002
1470 * Query supported subpicture formats
1471 * The caller must provide a "format_list" array that can hold at
1472 * least vaMaxNumSubpictureFormats() entries. The flags arrary holds the flag
1473 * for each format to indicate additional capabilities for that format. The actual
1474 * number of formats returned in "format_list" is returned in "num_formats".
1475 * flags: returned value to indicate addtional capabilities
1476 * VA_SUBPICTURE_CHROMA_KEYING - supports chroma-keying
1477 * VA_SUBPICTURE_GLOBAL_ALPHA - supports global alpha
1479 VAStatus vaQuerySubpictureFormats (
1481 VAImageFormat *format_list, /* out */
1482 unsigned int *flags, /* out */
1483 unsigned int *num_formats /* out */
1487 * Subpictures are created with an image associated.
1489 VAStatus vaCreateSubpicture (
1492 VASubpictureID *subpicture /* out */
1496 * Destroy the subpicture before destroying the image it is assocated to
1498 VAStatus vaDestroySubpicture (
1500 VASubpictureID subpicture
1504 * Bind an image to the subpicture. This image will now be associated with
1505 * the subpicture instead of the one at creation.
1507 VAStatus vaSetSubpictureImage (
1509 VASubpictureID subpicture,
1514 * If chromakey is enabled, then the area where the source value falls within
1515 * the chromakey [min, max] range is transparent
1516 * The chromakey component format is the following:
1517 * For RGB: [0:7] Red [8:15] Blue [16:23] Green
1518 * For YUV: [0:7] V [8:15] U [16:23] Y
1519 * The chromakey mask can be used to mask out certain components for chromakey
1522 VAStatus vaSetSubpictureChromakey (
1524 VASubpictureID subpicture,
1525 unsigned int chromakey_min,
1526 unsigned int chromakey_max,
1527 unsigned int chromakey_mask
1531 * Global alpha value is between 0 and 1. A value of 1 means fully opaque and
1532 * a value of 0 means fully transparent. If per-pixel alpha is also specified then
1533 * the overall alpha is per-pixel alpha multiplied by the global alpha
1535 VAStatus vaSetSubpictureGlobalAlpha (
1537 VASubpictureID subpicture,
1542 * vaAssociateSubpicture associates the subpicture with target_surfaces.
1543 * It defines the region mapping between the subpicture and the target
1544 * surfaces through source and destination rectangles (with the same width and height).
1545 * Both will be displayed at the next call to vaPutSurface. Additional
1546 * associations before the call to vaPutSurface simply overrides the association.
1548 VAStatus vaAssociateSubpicture (
1550 VASubpictureID subpicture,
1551 VASurfaceID *target_surfaces,
1553 short src_x, /* upper left offset in subpicture */
1555 short dest_x, /* upper left offset in surface */
1557 unsigned short width,
1558 unsigned short height,
1560 * whether to enable chroma-keying or global-alpha
1561 * see VA_SUBPICTURE_XXX values
1567 * Similar to vaAssociateSubpicture but with additional destination width
1568 * and height to enable scaling
1570 VAStatus vaAssociateSubpicture2 (
1572 VASubpictureID subpicture,
1573 VASurfaceID *target_surfaces,
1575 short src_x, /* upper left offset in subpicture */
1577 unsigned short src_width,
1578 unsigned short src_height,
1579 short dest_x, /* upper left offset in surface */
1581 unsigned short dest_width,
1582 unsigned short dest_height,
1584 * whether to enable chroma-keying or global-alpha
1585 * see VA_SUBPICTURE_XXX values
1591 * vaDeassociateSubpicture removes the association of the subpicture with target_surfaces.
1593 VAStatus vaDeassociateSubpicture (
1595 VASubpictureID subpicture,
1596 VASurfaceID *target_surfaces,
1600 typedef struct _VARectangle
1604 unsigned short width;
1605 unsigned short height;
1609 * Display attributes
1610 * Display attributes are used to control things such as contrast, hue, saturation,
1611 * brightness etc. in the rendering process. The application can query what
1612 * attributes are supported by the driver, and then set the appropriate attributes
1613 * before calling vaPutSurface()
1616 /* Currently defined display attribute types */
1619 VADisplayAttribBrightness = 0,
1620 VADisplayAttribContrast = 1,
1621 VADisplayAttribHue = 2,
1622 VADisplayAttribSaturation = 3,
1623 /* client can specifiy a background color for the target window */
1624 VADisplayAttribBackgroundColor = 4,
1626 * this is a gettable only attribute. For some implementations that use the
1627 * hardware overlay, after PutSurface is called, the surface can not be
1628 * re-used until after the subsequent PutSurface call. If this is the case
1629 * then the value for this attribute will be set to 1 so that the client
1630 * will not attempt to re-use the surface right after returning from a call
1633 VADisplayAttribDirectSurface = 5,
1634 } VADisplayAttribType;
1636 /* flags for VADisplayAttribute */
1637 #define VA_DISPLAY_ATTRIB_NOT_SUPPORTED 0x0000
1638 #define VA_DISPLAY_ATTRIB_GETTABLE 0x0001
1639 #define VA_DISPLAY_ATTRIB_SETTABLE 0x0002
1641 typedef struct _VADisplayAttribute
1643 VADisplayAttribType type;
1646 int value; /* used by the set/get attribute functions */
1647 /* flags can be VA_DISPLAY_ATTRIB_GETTABLE or VA_DISPLAY_ATTRIB_SETTABLE or OR'd together */
1649 } VADisplayAttribute;
1651 /* Get maximum number of display attributs supported by the implementation */
1652 int vaMaxNumDisplayAttributes (
1657 * Query display attributes
1658 * The caller must provide a "attr_list" array that can hold at
1659 * least vaMaxNumDisplayAttributes() entries. The actual number of attributes
1660 * returned in "attr_list" is returned in "num_attributes".
1662 VAStatus vaQueryDisplayAttributes (
1664 VADisplayAttribute *attr_list, /* out */
1665 int *num_attributes /* out */
1669 * Get display attributes
1670 * This function returns the current attribute values in "attr_list".
1671 * Only attributes returned with VA_DISPLAY_ATTRIB_GETTABLE set in the "flags" field
1672 * from vaQueryDisplayAttributes() can have their values retrieved.
1674 VAStatus vaGetDisplayAttributes (
1676 VADisplayAttribute *attr_list, /* in/out */
1681 * Set display attributes
1682 * Only attributes returned with VA_DISPLAY_ATTRIB_SETTABLE set in the "flags" field
1683 * from vaQueryDisplayAttributes() can be set. If the attribute is not settable or
1684 * the value is out of range, the function returns VA_STATUS_ERROR_ATTR_NOT_SUPPORTED
1686 VAStatus vaSetDisplayAttributes (
1688 VADisplayAttribute *attr_list,