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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,
467 /****************************
468 * MPEG-2 data structures
469 ****************************/
471 /* MPEG-2 Picture Parameter Buffer */
473 * For each frame or field, and before any slice data, a single
474 * picture parameter buffer must be send.
476 typedef struct _VAPictureParameterBufferMPEG2
478 unsigned short horizontal_size;
479 unsigned short vertical_size;
480 VASurfaceID forward_reference_picture;
481 VASurfaceID backward_reference_picture;
482 /* meanings of the following fields are the same as in the standard */
483 int picture_coding_type;
484 int f_code; /* pack all four fcode into this */
487 unsigned int intra_dc_precision : 2;
488 unsigned int picture_structure : 2;
489 unsigned int top_field_first : 1;
490 unsigned int frame_pred_frame_dct : 1;
491 unsigned int concealment_motion_vectors : 1;
492 unsigned int q_scale_type : 1;
493 unsigned int intra_vlc_format : 1;
494 unsigned int alternate_scan : 1;
495 unsigned int repeat_first_field : 1;
496 unsigned int progressive_frame : 1;
497 unsigned int is_first_field : 1; /* indicate whether the current field
498 * is the first field for field picture
502 } picture_coding_extension;
503 } VAPictureParameterBufferMPEG2;
505 /* MPEG-2 Inverse Quantization Matrix Buffer */
506 typedef struct _VAIQMatrixBufferMPEG2
508 int load_intra_quantiser_matrix;
509 int load_non_intra_quantiser_matrix;
510 int load_chroma_intra_quantiser_matrix;
511 int load_chroma_non_intra_quantiser_matrix;
512 unsigned char intra_quantiser_matrix[64];
513 unsigned char non_intra_quantiser_matrix[64];
514 unsigned char chroma_intra_quantiser_matrix[64];
515 unsigned char chroma_non_intra_quantiser_matrix[64];
516 } VAIQMatrixBufferMPEG2;
519 * There will be cases where the bitstream buffer will not have enough room to hold
520 * the data for the entire slice, and the following flags will be used in the slice
521 * parameter to signal to the server for the possible cases.
522 * If a slice parameter buffer and slice data buffer pair is sent to the server with
523 * the slice data partially in the slice data buffer (BEGIN and MIDDLE cases below),
524 * then a slice parameter and data buffer needs to be sent again to complete this slice.
526 #define VA_SLICE_DATA_FLAG_ALL 0x00 /* whole slice is in the buffer */
527 #define VA_SLICE_DATA_FLAG_BEGIN 0x01 /* The beginning of the slice is in the buffer but the end if not */
528 #define VA_SLICE_DATA_FLAG_MIDDLE 0x02 /* Neither beginning nor end of the slice is in the buffer */
529 #define VA_SLICE_DATA_FLAG_END 0x04 /* end of the slice is in the buffer */
531 /* MPEG-2 Slice Parameter Buffer */
532 typedef struct _VASliceParameterBufferMPEG2
534 unsigned int slice_data_size;/* number of bytes in the slice data buffer for this slice */
535 unsigned int slice_data_offset;/* the offset to the first byte of slice data */
536 unsigned int slice_data_flag; /* see VA_SLICE_DATA_FLAG_XXX defintions */
537 unsigned int macroblock_offset;/* the offset to the first bit of MB from the first byte of slice data */
538 unsigned int slice_vertical_position;
539 int quantiser_scale_code;
540 int intra_slice_flag;
541 } VASliceParameterBufferMPEG2;
543 /* MPEG-2 Macroblock Parameter Buffer */
544 typedef struct _VAMacroblockParameterBufferMPEG2
546 unsigned short macroblock_address;
548 * macroblock_address (in raster scan order)
550 * bottom-right: picture-height-in-mb*picture-width-in-mb - 1
552 unsigned char macroblock_type; /* see definition below */
555 unsigned int frame_motion_type : 2;
556 unsigned int field_motion_type : 2;
557 unsigned int dct_type : 1;
561 unsigned char motion_vertical_field_select;
563 * motion_vertical_field_select:
564 * see section 6.3.17.2 in the spec
565 * only the lower 4 bits are used
566 * bit 0: first vector forward
567 * bit 1: first vector backward
568 * bit 2: second vector forward
569 * bit 3: second vector backward
571 short PMV[2][2][2]; /* see Table 7-7 in the spec */
572 unsigned short coded_block_pattern;
574 * The bitplanes for coded_block_pattern are described
575 * in Figure 6.10-12 in the spec
578 /* Number of skipped macroblocks after this macroblock */
579 unsigned short num_skipped_macroblocks;
580 } VAMacroblockParameterBufferMPEG2;
583 * OR'd flags for macroblock_type (section 6.3.17.1 in the spec)
585 #define VA_MB_TYPE_MOTION_FORWARD 0x02
586 #define VA_MB_TYPE_MOTION_BACKWARD 0x04
587 #define VA_MB_TYPE_MOTION_PATTERN 0x08
588 #define VA_MB_TYPE_MOTION_INTRA 0x10
591 * MPEG-2 Residual Data Buffer
592 * For each macroblock, there wil be 64 shorts (16-bit) in the
593 * residual data buffer
596 /****************************
597 * MPEG-4 Part 2 data structures
598 ****************************/
600 /* MPEG-4 Picture Parameter Buffer */
602 * For each frame or field, and before any slice data, a single
603 * picture parameter buffer must be send.
605 typedef struct _VAPictureParameterBufferMPEG4
607 unsigned short vop_width;
608 unsigned short vop_height;
609 VASurfaceID forward_reference_picture;
610 VASurfaceID backward_reference_picture;
613 unsigned int short_video_header : 1;
614 unsigned int chroma_format : 2;
615 unsigned int interlaced : 1;
616 unsigned int obmc_disable : 1;
617 unsigned int sprite_enable : 2;
618 unsigned int sprite_warping_accuracy : 2;
619 unsigned int quant_type : 1;
620 unsigned int quarter_sample : 1;
621 unsigned int data_partitioned : 1;
622 unsigned int reversible_vlc : 1;
626 unsigned char no_of_sprite_warping_points;
627 short sprite_trajectory_du[3];
628 short sprite_trajectory_dv[3];
629 unsigned char quant_precision;
632 unsigned int vop_coding_type : 2;
633 unsigned int backward_reference_vop_coding_type : 2;
634 unsigned int vop_rounding_type : 1;
635 unsigned int intra_dc_vlc_thr : 3;
636 unsigned int top_field_first : 1;
637 unsigned int alternate_vertical_scan_flag : 1;
641 unsigned char vop_fcode_forward;
642 unsigned char vop_fcode_backward;
643 /* short header related */
644 unsigned char num_gobs_in_vop;
645 unsigned char num_macroblocks_in_gob;
646 /* for direct mode prediction */
649 } VAPictureParameterBufferMPEG4;
651 /* MPEG-4 Inverse Quantization Matrix Buffer */
652 typedef struct _VAIQMatrixBufferMPEG4
654 int load_intra_quant_mat;
655 int load_non_intra_quant_mat;
656 unsigned char intra_quant_mat[64];
657 unsigned char non_intra_quant_mat[64];
658 } VAIQMatrixBufferMPEG4;
660 /* MPEG-4 Slice Parameter Buffer */
661 typedef struct _VASliceParameterBufferMPEG4
663 unsigned int slice_data_size;/* number of bytes in the slice data buffer for this slice */
664 unsigned int slice_data_offset;/* the offset to the first byte of slice data */
665 unsigned int slice_data_flag; /* see VA_SLICE_DATA_FLAG_XXX defintions */
666 unsigned int macroblock_offset;/* the offset to the first bit of MB from the first byte of slice data */
667 unsigned int macroblock_number;
669 } VASliceParameterBufferMPEG4;
675 typedef enum /* see 7.1.1.32 */
678 VAMvMode1MvHalfPel = 1,
679 VAMvMode1MvHalfPelBilinear = 2,
681 VAMvModeIntensityCompensation = 4
684 /* VC-1 Picture Parameter Buffer */
686 * For each picture, and before any slice data, a picture parameter
687 * buffer must be send. Multiple picture parameter buffers may be
688 * sent for a single picture. In that case picture parameters will
689 * apply to all slice data that follow it until a new picture
690 * parameter buffer is sent.
693 * pic_quantizer_type should be set to the applicable quantizer
694 * type as defined by QUANTIZER (J.1.19) and either
695 * PQUANTIZER (7.1.1.8) or PQINDEX (7.1.1.6)
697 typedef struct _VAPictureParameterBufferVC1
699 VASurfaceID forward_reference_picture;
700 VASurfaceID backward_reference_picture;
701 /* if out-of-loop post-processing is done on the render
702 target, then we need to keep the in-loop decoded
703 picture as a reference picture */
704 VASurfaceID inloop_decoded_picture;
706 /* sequence layer for AP or meta data for SP and MP */
709 unsigned int interlace : 1; /* SEQUENCE_LAYER::INTERLACE */
710 unsigned int syncmarker : 1;/* METADATA::SYNCMARKER */
711 unsigned int overlap : 1;/* METADATA::OVERLAP */
716 unsigned short coded_width; /* ENTRY_POINT_LAYER::CODED_WIDTH */
717 unsigned short coded_height; /* ENTRY_POINT_LAYER::CODED_HEIGHT */
718 unsigned char closed_entry; /* ENTRY_POINT_LAYER::CLOSED_ENTRY */
719 unsigned char broken_link; /* ENTRY_POINT_LAYER::BROKEN_LINK */
720 unsigned char loopfilter; /* ENTRY_POINT_LAYER::LOOPFILTER */
721 unsigned char conditional_overlap_flag; /* ENTRY_POINT_LAYER::CONDOVER */
722 unsigned char fast_uvmc_flag; /* ENTRY_POINT_LAYER::FASTUVMC */
725 unsigned int luma_flag : 1; /* ENTRY_POINT_LAYER::RANGE_MAPY_FLAG */
726 unsigned int luma : 3; /* ENTRY_POINT_LAYER::RANGE_MAPY */
727 unsigned int chroma_flag : 1; /* ENTRY_POINT_LAYER::RANGE_MAPUV_FLAG */
728 unsigned int chroma : 3; /* ENTRY_POINT_LAYER::RANGE_MAPUV */
731 } range_mapping_fields;
733 unsigned char b_picture_fraction; /* PICTURE_LAYER::BFRACTION */
734 unsigned char cbp_table; /* PICTURE_LAYER::CBPTAB/ICBPTAB */
735 unsigned char mb_mode_table; /* PICTURE_LAYER::MBMODETAB */
736 unsigned char range_reduction_frame;/* PICTURE_LAYER::RANGEREDFRM */
737 unsigned char rounding_control; /* PICTURE_LAYER::RNDCTRL */
738 unsigned char post_processing; /* PICTURE_LAYER::POSTPROC */
739 unsigned char picture_resolution_index; /* PICTURE_LAYER::RESPIC */
740 unsigned char luma_scale; /* PICTURE_LAYER::LUMSCALE */
741 unsigned char luma_shift; /* PICTURE_LAYER::LUMSHIFT */
744 unsigned int picture_type : 2; /* PICTURE_LAYER::PTYPE */
745 unsigned int frame_coding_mode : 3; /* PICTURE_LAYER::FCM */
746 unsigned int top_field_first : 1; /* PICTURE_LAYER::TFF */
747 unsigned int is_first_field : 1; /* set to 1 if it is the first field */
748 unsigned int intensity_compensation : 1; /* PICTURE_LAYER::INTCOMP */
754 unsigned int mv_type_mb : 1; /* PICTURE::MVTYPEMB */
755 unsigned int direct_mb : 1; /* PICTURE::DIRECTMB */
756 unsigned int skip_mb : 1; /* PICTURE::SKIPMB */
757 unsigned int field_tx : 1; /* PICTURE::FIELDTX */
758 unsigned int forward_mb : 1; /* PICTURE::FORWARDMB */
759 unsigned int ac_pred : 1; /* PICTURE::ACPRED */
760 unsigned int overflags : 1; /* PICTURE::OVERFLAGS */
766 unsigned int bp_mv_type_mb : 1; /* PICTURE::MVTYPEMB */
767 unsigned int bp_direct_mb : 1; /* PICTURE::DIRECTMB */
768 unsigned int bp_skip_mb : 1; /* PICTURE::SKIPMB */
769 unsigned int bp_field_tx : 1; /* PICTURE::FIELDTX */
770 unsigned int bp_forward_mb : 1; /* PICTURE::FORWARDMB */
771 unsigned int bp_ac_pred : 1; /* PICTURE::ACPRED */
772 unsigned int bp_overflags : 1; /* PICTURE::OVERFLAGS */
775 } bitplane_present; /* signal what bitplane is being passed via the bitplane buffer */
778 unsigned int reference_distance_flag : 1;/* PICTURE_LAYER::REFDIST_FLAG */
779 unsigned int reference_distance : 5;/* PICTURE_LAYER::REFDIST */
780 unsigned int num_reference_pictures: 1;/* PICTURE_LAYER::NUMREF */
781 unsigned int reference_field_pic_indicator : 1;/* PICTURE_LAYER::REFFIELD */
787 unsigned int mv_mode : 3; /* PICTURE_LAYER::MVMODE */
788 unsigned int mv_mode2 : 3; /* PICTURE_LAYER::MVMODE2 */
789 unsigned int mv_table : 3; /* PICTURE_LAYER::MVTAB/IMVTAB */
790 unsigned int two_mv_block_pattern_table: 2; /* PICTURE_LAYER::2MVBPTAB */
791 unsigned int four_mv_switch : 1; /* PICTURE_LAYER::4MVSWITCH */
792 unsigned int four_mv_block_pattern_table : 2; /* PICTURE_LAYER::4MVBPTAB */
793 unsigned int extended_mv_flag : 1; /* ENTRY_POINT_LAYER::EXTENDED_MV */
794 unsigned int extended_mv_range : 2; /* PICTURE_LAYER::MVRANGE */
795 unsigned int extended_dmv_flag : 1; /* ENTRY_POINT_LAYER::EXTENDED_DMV */
796 unsigned int extended_dmv_range : 2; /* PICTURE_LAYER::DMVRANGE */
802 unsigned int dquant : 2; /* ENTRY_POINT_LAYER::DQUANT */
803 unsigned int quantizer : 2; /* ENTRY_POINT_LAYER::QUANTIZER */
804 unsigned int half_qp : 1; /* PICTURE_LAYER::HALFQP */
805 unsigned int pic_quantizer_scale : 5;/* PICTURE_LAYER::PQUANT */
806 unsigned int pic_quantizer_type : 1;/* PICTURE_LAYER::PQUANTIZER */
807 unsigned int dq_frame : 1; /* VOPDQUANT::DQUANTFRM */
808 unsigned int dq_profile : 2; /* VOPDQUANT::DQPROFILE */
809 unsigned int dq_sb_edge : 2; /* VOPDQUANT::DQSBEDGE */
810 unsigned int dq_db_edge : 2; /* VOPDQUANT::DQDBEDGE */
811 unsigned int dq_binary_level : 1; /* VOPDQUANT::DQBILEVEL */
812 unsigned int alt_pic_quantizer : 5;/* VOPDQUANT::ALTPQUANT */
815 } pic_quantizer_fields;
818 unsigned int variable_sized_transform_flag : 1;/* ENTRY_POINT_LAYER::VSTRANSFORM */
819 unsigned int mb_level_transform_type_flag : 1;/* PICTURE_LAYER::TTMBF */
820 unsigned int frame_level_transform_type : 2;/* PICTURE_LAYER::TTFRM */
821 unsigned int transform_ac_codingset_idx1 : 2;/* PICTURE_LAYER::TRANSACFRM */
822 unsigned int transform_ac_codingset_idx2 : 2;/* PICTURE_LAYER::TRANSACFRM2 */
823 unsigned int intra_transform_dc_table : 1;/* PICTURE_LAYER::TRANSDCTAB */
827 } VAPictureParameterBufferVC1;
829 /* VC-1 Bitplane Buffer
830 There will be at most three bitplanes coded in any picture header. To send
831 the bitplane data more efficiently, each byte is divided in two nibbles, with
832 each nibble carrying three bitplanes for one macroblock. The following table
833 shows the bitplane data arrangement within each nibble based on the picture
836 Picture Type Bit3 Bit2 Bit1 Bit0
837 I or BI OVERFLAGS ACPRED FIELDTX
838 P MYTYPEMB SKIPMB DIRECTMB
839 B FORWARDMB SKIPMB DIRECTMB
841 Within each byte, the lower nibble is for the first MB and the upper nibble is
842 for the second MB. E.g. the lower nibble of the first byte in the bitplane
843 buffer is for Macroblock #1 and the upper nibble of the first byte is for
844 Macroblock #2 in the first row.
847 /* VC-1 Slice Parameter Buffer */
848 typedef struct _VASliceParameterBufferVC1
850 unsigned int slice_data_size;/* number of bytes in the slice data buffer for this slice */
851 unsigned int slice_data_offset;/* the offset to the first byte of slice data */
852 unsigned int slice_data_flag; /* see VA_SLICE_DATA_FLAG_XXX defintions */
853 unsigned int macroblock_offset;/* the offset to the first bit of MB from the first byte of slice data */
854 unsigned int slice_vertical_position;
855 } VASliceParameterBufferVC1;
857 /* VC-1 Slice Data Buffer */
859 This is simplely a buffer containing raw bit-stream bytes
862 /****************************
863 * H.264/AVC data structures
864 ****************************/
866 typedef struct _VAPictureH264
868 VASurfaceID picture_id;
870 unsigned int TopFieldOrderCnt;
871 unsigned int BottomFieldOrderCnt;
873 /* flags in VAPictureH264 could be OR of the following */
874 #define VA_PICTURE_H264_INVALID 0x00000001
875 #define VA_PICTURE_H264_TOP_FIELD 0x00000002
876 #define VA_PICTURE_H264_BOTTOM_FIELD 0x00000004
877 #define VA_PICTURE_H264_SHORT_TERM_REFERENCE 0x00000008
878 #define VA_PICTURE_H264_LONG_TERM_REFERENCE 0x00000010
880 /* H.264 Picture Parameter Buffer */
882 * For each picture, and before any slice data, a single
883 * picture parameter buffer must be send.
885 typedef struct _VAPictureParameterBufferH264
887 VAPictureH264 CurrPic;
888 VAPictureH264 ReferenceFrames[16]; /* in DPB */
889 unsigned short picture_width_in_mbs_minus1;
890 unsigned short picture_height_in_mbs_minus1;
891 unsigned char bit_depth_luma_minus8;
892 unsigned char bit_depth_chroma_minus8;
893 unsigned char num_ref_frames;
896 unsigned int chroma_format_idc : 2;
897 unsigned int residual_colour_transform_flag : 1;
898 unsigned int frame_mbs_only_flag : 1;
899 unsigned int mb_adaptive_frame_field_flag : 1;
900 unsigned int direct_8x8_inference_flag : 1;
901 unsigned int MinLumaBiPredSize8x8 : 1; /* see A.3.3.2 */
905 unsigned char num_slice_groups_minus1;
906 unsigned char slice_group_map_type;
907 signed char pic_init_qp_minus26;
908 signed char chroma_qp_index_offset;
909 signed char second_chroma_qp_index_offset;
912 unsigned int entropy_coding_mode_flag : 1;
913 unsigned int weighted_pred_flag : 1;
914 unsigned int weighted_bipred_idc : 2;
915 unsigned int transform_8x8_mode_flag : 1;
916 unsigned int field_pic_flag : 1;
917 unsigned int constrained_intra_pred_flag : 1;
921 unsigned short frame_num;
922 } VAPictureParameterBufferH264;
924 /* H.264 Inverse Quantization Matrix Buffer */
925 typedef struct _VAIQMatrixBufferH264
927 unsigned char ScalingList4x4[6][16];
928 unsigned char ScalingList8x8[2][64];
929 } VAIQMatrixBufferH264;
932 * H.264 Slice Group Map Buffer
933 * When VAPictureParameterBufferH264::num_slice_group_minus1 is not equal to 0,
934 * A slice group map buffer should be sent for each picture if required. The buffer
935 * is sent only when there is a change in the mapping values.
936 * The slice group map buffer map "map units" to slice groups as specified in
937 * section 8.2.2 of the H.264 spec. The buffer will contain one byte for each macroblock
938 * in raster scan order
941 /* H.264 Slice Parameter Buffer */
942 typedef struct _VASliceParameterBufferH264
944 unsigned int slice_data_size;/* number of bytes in the slice data buffer for this slice */
945 unsigned int slice_data_offset;/* the offset to the NAL start code for this slice */
946 unsigned int slice_data_flag; /* see VA_SLICE_DATA_FLAG_XXX defintions */
947 unsigned short slice_data_bit_offset; /* bit offset from NAL start code to the beginning of slice data */
948 unsigned short first_mb_in_slice;
949 unsigned char slice_type;
950 unsigned char direct_spatial_mv_pred_flag;
951 unsigned char num_ref_idx_l0_active_minus1;
952 unsigned char num_ref_idx_l1_active_minus1;
953 unsigned char cabac_init_idc;
955 unsigned char disable_deblocking_filter_idc;
956 char slice_alpha_c0_offset_div2;
957 char slice_beta_offset_div2;
958 VAPictureH264 RefPicList0[32]; /* See 8.2.4.2 */
959 VAPictureH264 RefPicList1[32]; /* See 8.2.4.2 */
960 unsigned char luma_log2_weight_denom;
961 unsigned char chroma_log2_weight_denom;
962 unsigned char luma_weight_l0_flag;
963 short luma_weight_l0[32];
964 short luma_offset_l0[32];
965 unsigned char chroma_weight_l0_flag;
966 short chroma_weight_l0[32][2];
967 short chroma_offset_l0[32][2];
968 unsigned char luma_weight_l1_flag;
969 short luma_weight_l1[32];
970 short luma_offset_l1[32];
971 unsigned char chroma_weight_l1_flag;
972 short chroma_weight_l1[32][2];
973 short chroma_offset_l1[32][2];
974 } VASliceParameterBufferH264;
976 /****************************
977 * Common encode data structures
978 ****************************/
981 VAEncPictureTypeIntra = 0,
982 VAEncPictureTypePredictive = 1,
983 VAEncPictureTypeBidirectional = 2,
986 /* Encode Slice Parameter Buffer */
987 typedef struct _VAEncSliceParameterBuffer
989 unsigned int start_row_number; /* starting MB row number for this slice */
990 unsigned int slice_height; /* slice height measured in MB */
993 unsigned char is_intra : 1;
994 unsigned char disable_deblocking_filter_idc : 2;
998 } VAEncSliceParameterBuffer;
1000 /****************************
1001 * H.264 specific encode data structures
1002 ****************************/
1004 typedef struct _VAEncSequenceParameterBufferH264
1006 unsigned char seq_parameter_set_id;
1007 unsigned char level_idc;
1008 unsigned int intra_period;
1009 unsigned int picture_width_in_mbs;
1010 unsigned int picture_height_in_mbs;
1011 unsigned int bits_per_second;
1012 unsigned int frame_rate;
1013 unsigned int initial_qp;
1014 unsigned int min_qp;
1015 unsigned int basic_unit_size;
1016 unsigned char vui_flag;
1017 } VAEncSequenceParameterBufferH264;
1019 typedef struct _VAEncPictureParameterBufferH264
1021 VASurfaceID reference_picture;
1022 VASurfaceID reconstructed_picture;
1023 VABufferID coded_buf;
1024 unsigned short picture_width;
1025 unsigned short picture_height;
1026 unsigned char last_picture; /* if set to 1 it indicates the last picture in the sequence */
1027 } VAEncPictureParameterBufferH264;
1029 /****************************
1030 * H.263 specific encode data structures
1031 ****************************/
1033 typedef struct _VAEncSequenceParameterBufferH263
1035 unsigned int bits_per_second;
1036 unsigned int frame_rate;
1037 unsigned int initial_qp;
1038 unsigned int min_qp;
1039 } VAEncSequenceParameterBufferH263;
1041 typedef struct _VAEncPictureParameterBufferH263
1043 VASurfaceID reference_picture;
1044 VASurfaceID reconstructed_picture;
1045 VABufferID coded_buf;
1046 unsigned short picture_width;
1047 unsigned short picture_height;
1048 VAEncPictureType picture_type;
1049 } VAEncPictureParameterBufferH263;
1051 /****************************
1052 * MPEG-4 specific encode data structures
1053 ****************************/
1055 typedef struct _VAEncSequenceParameterBufferMPEG4
1057 unsigned char profile_and_level_indication;
1058 unsigned int intra_period;
1059 unsigned int video_object_layer_width;
1060 unsigned int video_object_layer_height;
1061 unsigned int vop_time_increment_resolution;
1062 unsigned int fixed_vop_rate;
1063 unsigned int fixed_vop_time_increment;
1064 unsigned int bits_per_second;
1065 unsigned int frame_rate;
1066 unsigned int initial_qp;
1067 unsigned int min_qp;
1068 } VAEncSequenceParameterBufferMPEG4;
1070 typedef struct _VAEncPictureParameterBufferMPEG4
1072 VASurfaceID reference_picture;
1073 VASurfaceID reconstructed_picture;
1074 VABufferID coded_buf;
1075 unsigned short picture_width;
1076 unsigned short picture_height;
1077 unsigned int modulo_time_base; /* number of 1s */
1078 unsigned int vop_time_increment;
1079 VAEncPictureType picture_type;
1080 } VAEncPictureParameterBufferMPEG4;
1082 /* Buffer functions */
1085 * Creates a buffer for "num_elements" elements of "size" bytes and
1086 * initalize with "data".
1087 * if "data" is null, then the contents of the buffer data store
1089 * Basically there are two ways to get buffer data to the server side. One is
1090 * to call vaCreateBuffer() with a non-null "data", which results the data being
1091 * copied to the data store on the server side. A different method that
1092 * eliminates this copy is to pass null as "data" when calling vaCreateBuffer(),
1093 * and then use vaMapBuffer() to map the data store from the server side to the
1094 * client address space for access.
1095 * Note: image buffers are created by the library, not the client. Please see
1096 * vaCreateImage on how image buffers are managed.
1098 VAStatus vaCreateBuffer (
1100 VAContextID context,
1101 VABufferType type, /* in */
1102 unsigned int size, /* in */
1103 unsigned int num_elements, /* in */
1104 void *data, /* in */
1105 VABufferID *buf_id /* out */
1109 * Convey to the server how many valid elements are in the buffer.
1110 * e.g. if multiple slice parameters are being held in a single buffer,
1111 * this will communicate to the server the number of slice parameters
1112 * that are valid in the buffer.
1114 VAStatus vaBufferSetNumElements (
1116 VABufferID buf_id, /* in */
1117 unsigned int num_elements /* in */
1121 * Map data store of the buffer into the client's address space
1122 * vaCreateBuffer() needs to be called with "data" set to NULL before
1123 * calling vaMapBuffer()
1125 VAStatus vaMapBuffer (
1127 VABufferID buf_id, /* in */
1128 void **pbuf /* out */
1132 * After client making changes to a mapped data store, it needs to
1133 * "Unmap" it to let the server know that the data is ready to be
1134 * consumed by the server
1136 VAStatus vaUnmapBuffer (
1138 VABufferID buf_id /* in */
1142 * After this call, the buffer is deleted and this buffer_id is no longer valid
1143 * Only call this if the buffer is not going to be passed to vaRenderBuffer
1145 VAStatus vaDestroyBuffer (
1147 VABufferID buffer_id
1151 Render (Decode) Pictures
1153 A picture represents either a frame or a field.
1155 The Begin/Render/End sequence sends the decode buffers to the server
1159 * Get ready to decode a picture to a target surface
1161 VAStatus vaBeginPicture (
1163 VAContextID context,
1164 VASurfaceID render_target
1168 * Send decode buffers to the server.
1169 * Buffers are automatically destroyed afterwards
1171 VAStatus vaRenderPicture (
1173 VAContextID context,
1174 VABufferID *buffers,
1179 * Make the end of rendering for a picture.
1180 * The server should start processing all pending operations for this
1181 * surface. This call is non-blocking. The client can start another
1182 * Begin/Render/End sequence on a different render target.
1184 VAStatus vaEndPicture (
1196 * This function blocks until all pending operations on the render target
1197 * have been completed. Upon return it is safe to use the render target for a
1198 * different picture.
1200 VAStatus vaSyncSurface (
1202 VAContextID context,
1203 VASurfaceID render_target
1208 VASurfaceRendering = 0, /* Rendering in progress */
1209 VASurfaceDisplaying = 1, /* Displaying in progress (not safe to render into it) */
1210 /* this status is useful if surface is used as the source */
1212 VASurfaceReady = 2, /* not being rendered or displayed */
1213 VASurfaceSkipped = 3 /* Indicate a skipped frame during encode */
1217 * Find out any pending ops on the render target
1219 VAStatus vaQuerySurfaceStatus (
1221 VASurfaceID render_target,
1222 VASurfaceStatus *status /* out */
1226 * Images and Subpictures
1227 * VAImage is used to either get the surface data to client memory, or
1228 * to copy image data in client memory to a surface.
1229 * Both images, subpictures and surfaces follow the same 2D coordinate system where origin
1230 * is at the upper left corner with positive X to the right and positive Y down
1232 #define VA_FOURCC(ch0, ch1, ch2, ch3) \
1233 ((unsigned long)(unsigned char) (ch0) | ((unsigned long)(unsigned char) (ch1) << 8) | \
1234 ((unsigned long)(unsigned char) (ch2) << 16) | ((unsigned long)(unsigned char) (ch3) << 24 ))
1236 /* a few common FourCCs */
1237 #define VA_FOURCC_NV12 0x3231564E
1238 #define VA_FOURCC_AI44 0x34344149
1239 #define VA_FOURCC_RGBA 0x41424752
1240 #define VA_FOURCC_UYVY 0x59565955
1241 #define VA_FOURCC_YUY2 0x32595559
1242 #define VA_FOURCC_AYUV 0x56555941
1243 #define VA_FOURCC_NV11 0x3131564e
1244 #define VA_FOURCC_YV12 0x32315659
1245 #define VA_FOURCC_P208 0x38303250
1246 #define VA_FOURCC_IYUV 0x56555949
1249 #define VA_LSB_FIRST 1
1250 #define VA_MSB_FIRST 2
1252 typedef struct _VAImageFormat
1254 unsigned int fourcc;
1255 unsigned int byte_order; /* VA_LSB_FIRST, VA_MSB_FIRST */
1256 unsigned int bits_per_pixel;
1257 /* for RGB formats */
1258 unsigned int depth; /* significant bits per pixel */
1259 unsigned int red_mask;
1260 unsigned int green_mask;
1261 unsigned int blue_mask;
1262 unsigned int alpha_mask;
1265 typedef VAGenericID VAImageID;
1267 typedef struct _VAImage
1269 VAImageID image_id; /* uniquely identify this image */
1270 VAImageFormat format;
1271 VABufferID buf; /* image data buffer */
1273 * Image data will be stored in a buffer of type VAImageBufferType to facilitate
1274 * data store on the server side for optimal performance. The buffer will be
1275 * created by the CreateImage function, and proper storage allocated based on the image
1276 * size and format. This buffer is managed by the library implementation, and
1277 * accessed by the client through the buffer Map/Unmap functions.
1279 unsigned short width;
1280 unsigned short height;
1281 unsigned int data_size;
1282 unsigned int num_planes; /* can not be greater than 3 */
1284 * An array indicating the scanline pitch in bytes for each plane.
1285 * Each plane may have a different pitch. Maximum 3 planes for planar formats
1287 unsigned int pitches[3];
1289 * An array indicating the byte offset from the beginning of the image data
1290 * to the start of each plane.
1292 unsigned int offsets[3];
1294 /* The following fields are only needed for paletted formats */
1295 int num_palette_entries; /* set to zero for non-palette images */
1297 * Each component is one byte and entry_bytes indicates the number of components in
1298 * each entry (eg. 3 for YUV palette entries). set to zero for non-palette images
1302 * An array of ascii characters describing the order of the components within the bytes.
1303 * Only entry_bytes characters of the string are used.
1305 char component_order[4];
1308 /* Get maximum number of image formats supported by the implementation */
1309 int vaMaxNumImageFormats (
1314 * Query supported image formats
1315 * The caller must provide a "format_list" array that can hold at
1316 * least vaMaxNumImageFormats() entries. The actual number of formats
1317 * returned in "format_list" is returned in "num_formats".
1319 VAStatus vaQueryImageFormats (
1321 VAImageFormat *format_list, /* out */
1322 int *num_formats /* out */
1326 * Create a VAImage structure
1327 * The width and height fields returned in the VAImage structure may get
1328 * enlarged for some YUV formats. Upon return from this function,
1329 * image->buf has been created and proper storage allocated by the library.
1330 * The client can access the image through the Map/Unmap calls.
1332 VAStatus vaCreateImage (
1334 VAImageFormat *format,
1337 VAImage *image /* out */
1341 * Should call DestroyImage before destroying the surface it is bound to
1343 VAStatus vaDestroyImage (
1348 VAStatus vaSetImagePalette (
1352 * pointer to an array holding the palette data. The size of the array is
1353 * num_palette_entries * entry_bytes in size. The order of the components
1354 * in the palette is described by the component_order in VAImage struct
1356 unsigned char *palette
1360 * Retrive surface data into a VAImage
1361 * Image must be in a format supported by the implementation
1363 VAStatus vaGetImage (
1365 VASurfaceID surface,
1366 int x, /* coordinates of the upper left source pixel */
1368 unsigned int width, /* width and height of the region */
1369 unsigned int height,
1374 * Copy data from a VAImage to a surface
1375 * Image must be in a format supported by the implementation
1376 * Returns a VA_STATUS_ERROR_SURFACE_BUSY if the surface
1377 * shouldn't be rendered into when this is called
1378 * The source and destionation width and height are the same and
1379 * no scaling is performed with this operation.
1381 VAStatus vaPutImage (
1383 VASurfaceID surface,
1388 unsigned int height,
1394 * Similar to vaPutImage but with additional destination width
1395 * and height arguments to enable scaling
1397 VAStatus vaPutImage2 (
1399 VASurfaceID surface,
1403 unsigned int src_width,
1404 unsigned int src_height,
1407 unsigned int dest_width,
1408 unsigned int dest_height
1412 * Derive an VAImage from an existing surface.
1413 * This interface will derive a VAImage and corresponding image buffer from
1414 * an existing VA Surface. The image buffer can then be mapped/unmapped for
1415 * direct CPU access. This operation is only possible on implementations with
1416 * direct rendering capabilities and internal surface formats that can be
1417 * represented with a VAImage. When the operation is not possible this interface
1418 * will return VA_STATUS_ERROR_OPERATION_FAILED. Clients should then fall back
1419 * to using vaCreateImage + vaPutImage to accomplish the same task in an
1422 * Implementations should only return success when the resulting image buffer
1423 * would be useable with vaMap/Unmap.
1425 * When directly accessing a surface special care must be taken to insure
1426 * proper synchronization with the graphics hardware. Clients should call
1427 * vaQuerySurfaceStatus to insure that a surface is not the target of concurrent
1428 * rendering or currently being displayed by an overlay.
1430 * Additionally nothing about the contents of a surface should be assumed
1431 * following a vaPutSurface. Implementations are free to modify the surface for
1432 * scaling or subpicture blending within a call to vaPutImage.
1434 * Calls to vaPutImage or vaGetImage using the same surface from which the image
1435 * has been derived will return VA_STATUS_ERROR_SURFACE_BUSY. vaPutImage or
1436 * vaGetImage with other surfaces is supported.
1438 * An image created with vaDeriveImage should be freed with vaDestroyImage. The
1439 * image and image buffer structures will be destroyed; however, the underlying
1440 * surface will remain unchanged until freed with vaDestroySurfaces.
1442 VAStatus vaDeriveImage (
1444 VASurfaceID surface,
1445 VAImage *image /* out */
1450 * Subpicture is a special type of image that can be blended
1451 * with a surface during vaPutSurface(). Subpicture can be used to render
1452 * DVD sub-titles or closed captioning text etc.
1455 typedef VAGenericID VASubpictureID;
1457 /* Get maximum number of subpicture formats supported by the implementation */
1458 int vaMaxNumSubpictureFormats (
1462 /* flags for subpictures */
1463 #define VA_SUBPICTURE_CHROMA_KEYING 0x0001
1464 #define VA_SUBPICTURE_GLOBAL_ALPHA 0x0002
1466 * Query supported subpicture formats
1467 * The caller must provide a "format_list" array that can hold at
1468 * least vaMaxNumSubpictureFormats() entries. The flags arrary holds the flag
1469 * for each format to indicate additional capabilities for that format. The actual
1470 * number of formats returned in "format_list" is returned in "num_formats".
1471 * flags: returned value to indicate addtional capabilities
1472 * VA_SUBPICTURE_CHROMA_KEYING - supports chroma-keying
1473 * VA_SUBPICTURE_GLOBAL_ALPHA - supports global alpha
1475 VAStatus vaQuerySubpictureFormats (
1477 VAImageFormat *format_list, /* out */
1478 unsigned int *flags, /* out */
1479 unsigned int *num_formats /* out */
1483 * Subpictures are created with an image associated.
1485 VAStatus vaCreateSubpicture (
1488 VASubpictureID *subpicture /* out */
1492 * Destroy the subpicture before destroying the image it is assocated to
1494 VAStatus vaDestroySubpicture (
1496 VASubpictureID subpicture
1500 * Bind an image to the subpicture. This image will now be associated with
1501 * the subpicture instead of the one at creation.
1503 VAStatus vaSetSubpictureImage (
1505 VASubpictureID subpicture,
1510 * If chromakey is enabled, then the area where the source value falls within
1511 * the chromakey [min, max] range is transparent
1512 * The chromakey component format is the following:
1513 * For RGB: [0:7] Red [8:15] Blue [16:23] Green
1514 * For YUV: [0:7] V [8:15] U [16:23] Y
1515 * The chromakey mask can be used to mask out certain components for chromakey
1518 VAStatus vaSetSubpictureChromakey (
1520 VASubpictureID subpicture,
1521 unsigned int chromakey_min,
1522 unsigned int chromakey_max,
1523 unsigned int chromakey_mask
1527 * Global alpha value is between 0 and 1. A value of 1 means fully opaque and
1528 * a value of 0 means fully transparent. If per-pixel alpha is also specified then
1529 * the overall alpha is per-pixel alpha multiplied by the global alpha
1531 VAStatus vaSetSubpictureGlobalAlpha (
1533 VASubpictureID subpicture,
1538 * vaAssociateSubpicture associates the subpicture with target_surfaces.
1539 * It defines the region mapping between the subpicture and the target
1540 * surfaces through source and destination rectangles (with the same width and height).
1541 * Both will be displayed at the next call to vaPutSurface. Additional
1542 * associations before the call to vaPutSurface simply overrides the association.
1544 VAStatus vaAssociateSubpicture (
1546 VASubpictureID subpicture,
1547 VASurfaceID *target_surfaces,
1549 short src_x, /* upper left offset in subpicture */
1551 short dest_x, /* upper left offset in surface */
1553 unsigned short width,
1554 unsigned short height,
1556 * whether to enable chroma-keying or global-alpha
1557 * see VA_SUBPICTURE_XXX values
1563 * Similar to vaAssociateSubpicture but with additional destination width
1564 * and height to enable scaling
1566 VAStatus vaAssociateSubpicture2 (
1568 VASubpictureID subpicture,
1569 VASurfaceID *target_surfaces,
1571 short src_x, /* upper left offset in subpicture */
1573 unsigned short src_width,
1574 unsigned short src_height,
1575 short dest_x, /* upper left offset in surface */
1577 unsigned short dest_width,
1578 unsigned short dest_height,
1580 * whether to enable chroma-keying or global-alpha
1581 * see VA_SUBPICTURE_XXX values
1587 * vaDeassociateSubpicture removes the association of the subpicture with target_surfaces.
1589 VAStatus vaDeassociateSubpicture (
1591 VASubpictureID subpicture,
1592 VASurfaceID *target_surfaces,
1596 typedef struct _VARectangle
1600 unsigned short width;
1601 unsigned short height;
1605 * Display attributes
1606 * Display attributes are used to control things such as contrast, hue, saturation,
1607 * brightness etc. in the rendering process. The application can query what
1608 * attributes are supported by the driver, and then set the appropriate attributes
1609 * before calling vaPutSurface()
1612 /* Currently defined display attribute types */
1615 VADisplayAttribBrightness = 0,
1616 VADisplayAttribContrast = 1,
1617 VADisplayAttribHue = 2,
1618 VADisplayAttribSaturation = 3,
1619 /* client can specifiy a background color for the target window */
1620 VADisplayAttribBackgroundColor = 4,
1622 * this is a gettable only attribute. For some implementations that use the
1623 * hardware overlay, after PutSurface is called, the surface can not be
1624 * re-used until after the subsequent PutSurface call. If this is the case
1625 * then the value for this attribute will be set to 1 so that the client
1626 * will not attempt to re-use the surface right after returning from a call
1629 VADisplayAttribDirectSurface = 5,
1630 } VADisplayAttribType;
1632 /* flags for VADisplayAttribute */
1633 #define VA_DISPLAY_ATTRIB_NOT_SUPPORTED 0x0000
1634 #define VA_DISPLAY_ATTRIB_GETTABLE 0x0001
1635 #define VA_DISPLAY_ATTRIB_SETTABLE 0x0002
1637 typedef struct _VADisplayAttribute
1639 VADisplayAttribType type;
1642 int value; /* used by the set/get attribute functions */
1643 /* flags can be VA_DISPLAY_ATTRIB_GETTABLE or VA_DISPLAY_ATTRIB_SETTABLE or OR'd together */
1645 } VADisplayAttribute;
1647 /* Get maximum number of display attributs supported by the implementation */
1648 int vaMaxNumDisplayAttributes (
1653 * Query display attributes
1654 * The caller must provide a "attr_list" array that can hold at
1655 * least vaMaxNumDisplayAttributes() entries. The actual number of attributes
1656 * returned in "attr_list" is returned in "num_attributes".
1658 VAStatus vaQueryDisplayAttributes (
1660 VADisplayAttribute *attr_list, /* out */
1661 int *num_attributes /* out */
1665 * Get display attributes
1666 * This function returns the current attribute values in "attr_list".
1667 * Only attributes returned with VA_DISPLAY_ATTRIB_GETTABLE set in the "flags" field
1668 * from vaQueryDisplayAttributes() can have their values retrieved.
1670 VAStatus vaGetDisplayAttributes (
1672 VADisplayAttribute *attr_list, /* in/out */
1677 * Set display attributes
1678 * Only attributes returned with VA_DISPLAY_ATTRIB_SETTABLE set in the "flags" field
1679 * from vaQueryDisplayAttributes() can be set. If the attribute is not settable or
1680 * the value is out of range, the function returns VA_STATUS_ERROR_ATTR_NOT_SUPPORTED
1682 VAStatus vaSetDisplayAttributes (
1684 VADisplayAttribute *attr_list,