Commit graph

85 commits

Author SHA1 Message Date
Gwenole Beauchesne
589078f2a4 utils: h264: expose levels in public header.
Instal <gst/vaapi/gstvaapiutils_h264.h> header but only expose the
H.264 levels in there. The additional helper functions are meant
to be private for now.
2014-01-10 19:52:50 +01:00
Gwenole Beauchesne
6fe54964bb h264: improve robustness when packets are missing.
Improve robustness when some expected packets where not received yet
or that were not correctly decoded. For example, don't try to decode
a picture if there was no valid frame headers parsed so far.

https://bugs.freedesktop.org/show_bug.cgi?id=57902
2013-12-10 16:14:27 +01:00
Gwenole Beauchesne
1dd89800b0 decoder: h264: fix decoding of BA3_SVA_C.264.
Conformance test Base_Ext_Main_profiles/BA3_SVA_C.264 complys with
extended profile specifications. However, the SPS header has the
constraint_set1_flag syntax element set to 1. This means that, if
a Main profile compliant decoder is available, then it should be
able to decode this stream.

This changes makes it possible to fall-back from Extended profile
to Main profile if constraint_set1_flag is set to 1.

https://bugzilla.gnome.org/show_bug.cgi?id=720190
2013-12-10 15:22:40 +01:00
Wind Yuan
009e4522bf decoder: h264: add support for constrained baseline profile.
Recognize streams marked as conforming to the "Constrained Baseline
Profile". If VA driver supports that as is, fine. Otherwise, fallback
to baseline, main or high profile.

Constrained Baseline Profile conveys coding tools that are common
to baseline profile and main profile.

https://bugzilla.gnome.org/show_bug.cgi?id=719947

[Added fallbacks to main and high profiles]
Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
2013-12-09 13:11:56 +01:00
Gwenole Beauchesne
bd5ae1b220 decoder: h264: fix decoding of scaling lists.
The GStreamer codecparser layer now parses the scaling lists in zigzag
scan order, as expected, so that to match the original bitstream layout
and specification. However, further convert the scaling lists into
raster scan order to fit the existing practice in most VA drivers.

https://bugzilla.gnome.org/show_bug.cgi?id=706406
2013-12-09 12:46:45 +01:00
Gwenole Beauchesne
e2f137f149 utils: add helpers for H.264 levels.
- gst_vaapi_utils_h264_get_level():
  Returns GstVaapiLevelH264 from H.264 level_idc value
- gst_vaapi_utils_h264_get_level_idc():
  Returns H.264 level_idc value from GstVaapiLevelH264
- gst_vaapi_utils_h264_get_level_limits():
  Returns level limits as specified in Table A-1 of the H.264 standard
- gst_vaapi_utils_h264_get_level_limits_table():
  Returns the Table A-1 specification
2013-12-06 19:26:15 +01:00
Gwenole Beauchesne
47dee4db96 utils: add new H.264 helper functions.
* Profiles:
- gst_vaapi_utils_h264_get_profile():
  Returns GstVaapiProfile from H.264 profile_idc value
- gst_vaapi_utils_h264_get_profile_idc():
  Returns H.264 profile_idc value from GstVaapiProfile

* Chroma formats:
- gst_vaapi_utils_h264_get_chroma_type():
  Returns GstVaapiChromaType from H.264 chroma_format_idc value
- gst_vaapi_utils_h264_get_chroma_format_idc():
  Returns H.264 chroma_format_idc value from GstVaapiChromaType
2013-12-06 19:25:21 +01:00
Gwenole Beauchesne
15519ebe3d legal: add per-file authorship information.
Credit original authors on a per-file basis as we cannot expect people
to know all country-specific rules, or bother browsing through the git
history.
2013-11-22 06:39:15 +01:00
Sreerenj Balachandran
976d27841a h264: add support for video cropping.
If the encoded stream has the frame_cropping_flag set, then associate
the cropping rectangle to GstVaapiPicture.

Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
2013-07-08 18:54:15 +02:00
Gwenole Beauchesne
3cc7b26961 libs: use GstVaapiMiniObject for video decoders.
Port GstVaapiDecoder and GstVaapiDecoder{MPEG2,MPEG4,JPEG,H264,VC1} to
GstVaapiMiniObject. Add gst_vaapi_decoder_set_codec_state_changed_func()
helper function to let the user add a callback to a function triggered
whenever the codec state (e.g. caps) changes.
2013-05-07 17:51:27 +02:00
Gwenole Beauchesne
6439169db5 libs: refine GstVaapiMiniObject.
Drop support for user-defined data since this capability was not used
so far and GstVaapiMiniObject represents the smallest reference counted
object type. Add missing GST_VAAPI_MINI_OBJECT_CLASS() helper macro.

Besides, since GstVaapiMiniObject is a libgstvaapi internal object, it
is also possible to further simplify the layout of the object. i.e. merge
GstVaapiMiniObjectBase into GstVaapiMiniObject.
2013-05-07 17:51:27 +02:00
Gwenole Beauchesne
788d337505 decoder: fix unpaired GstBuffer map/unmaps.
This possibly fixes a few memory leaks along the way.
2013-04-10 14:58:17 +02:00
Sreerenj Balachandran
51151e7aa1 Add initial support for GStreamer 1.0.
This integrates support for GStreamer API >= 1.0 only in the libgstvaapi
core decoding library. The changes are kept rather minimal here so that
the library retains as little dependency as possible on core GStreamer
functionality.

Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
2013-04-10 14:58:16 +02:00
Gwenole Beauchesne
4009430bec decoder: sanitize codec-data decoding.
Add a new GstVaapiDecoder::decode_codec_data() hook to actually decode
codec-data in the decoder sub-class. Provide a common shared helper
function to do the actual work and delegating further to the sub-class.
2013-03-21 14:38:06 +01:00
Gwenole Beauchesne
57ed7e3f8b decoder: sanitize uses of codec frame input buffer (cosmetics).
Alias GST_VAAPI_DECODER_CODEC_FRAME(decoder)->input_buffer to a simple
"buffer" variable.
2013-03-21 13:28:05 +01:00
Gwenole Beauchesne
ddaaa42020 h264: set {luma,chroma}_log2_weight_denom to 0 if no pred_weight_table().
Force luma_log2_weight_denom and chroma_log2_weight_denom to zero if
there is no pred_weight_table() that was parsed.

This is a workaround for the VA intel-driver on Ivy Bridge.
2013-02-08 11:56:54 +01:00
Gwenole Beauchesne
0c3650e7e8 h264: use new profile definitions from codecparsers. 2013-02-07 15:42:55 +01:00
Gwenole Beauchesne
0c99f351fc legal: fix year for some copyright notices (2013). 2013-01-29 14:37:02 +01:00
Gwenole Beauchesne
319f87f142 h264: implement GstVaapiDecoder::flush() as a DPB flush. 2013-01-17 18:40:36 +01:00
Gwenole Beauchesne
34162f5001 h264: handle end-of-stream NALU.
Handle <end-of-stream> NAL unit to actually flush any pending picture
from the DPB.
2013-01-17 18:40:36 +01:00
Gwenole Beauchesne
2c449e42ca decoder: refactor decoder unit API.
Allocate decoder unit earlier in the main parse() function and don't
delegate this task to derived classes. The ultimate purpose is to get
rid of dynamic allocation of decoder units.
2013-01-07 14:10:13 +01:00
Gwenole Beauchesne
8d2b7241fc h264: introduce parser info instead of H.264 specific decoder unit.
Use a new GstVaapiParserInfoH264 data structure instead of deriving
from GstVaapiDecoderUnit for H.264 specific parser information.
2013-01-07 10:48:57 +01:00
Sreerenj Balachandran
0963afce0b h264: set default values for some header fields.
The SPS, PPS and slice headers are not fully zero-initialized in the
codecparsers/ library. Rather, the standard upstream behaviour is to
initialize only certain syntax elements with some inferred values if
they are not present in the bitstream.

At the gstreamer-vaapi decoder level, we need to further initialize
certain syntax elements with some sensible default values so that to
not complicate VA drivers that just pass those verbatim to the HW,
and also avoid an memset() of the whole decoder unit.

Signed-off-by: Sreerenj Balachandran <sreerenj.balachandran@intel.com>
Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
2013-01-06 19:20:15 +01:00
Gwenole Beauchesne
3f60f136cc h264: don't create sub-buffer for slice data. 2013-01-03 11:23:40 +01:00
Gwenole Beauchesne
098eb2624e h264: optimize initialization process of decoder units.
Decoder units were zero-initialized, including the SPS/PPS/slice headers.
The latter don't require zero-initialization since the codecparsers/ lib
will do so for key variables already. This is not a great value per se but
at least it makes it possible to check whether the default initialization
decisions made in the codecparsers/ lib were right or not.

This can be reverted if this exposes too many issues.
2012-12-18 15:31:51 +01:00
Gwenole Beauchesne
0b2e399235 h264: minor clean-ups.
Drop explicit initialization of most fields that are implicitly set to
zero. Drop helper macros for casting to GstVaapiPictureH264 or
GstVaapiFrameStore. Also remove some useless checks for NULL pointers.
2012-12-18 15:31:51 +01:00
Gwenole Beauchesne
4992e7c60f h264: drop GstVaapiSliceH264 object.
Use standard GstVaapiSlice object from now on since we already have
parsed and recorded the slice headers (GstH264SliceHdr decode units).
2012-12-18 15:31:51 +01:00
Gwenole Beauchesne
f8a9e49fd8 h264: detect new pictures from decode-units.
Update is_new_picture() to cope with GstVaapiDecoderUnitH264, instead
of assuming frame boundaries when first_mb_in_slice is zero.
2012-12-18 15:31:51 +01:00
Gwenole Beauchesne
d9ec93fe46 h264: implement {start,end}_frame() hooks.
Implement GstVaapiDecoder.start_frame() and end_frame() semantics so
that to create new VA context earlier and submit VA pictures to the
HW for decoding as soon as possible. i.e. don't wait for the next
frame to start decoding the previous one.
2012-12-18 15:31:51 +01:00
Gwenole Beauchesne
f7f7393148 h264: optimize scan for the second start code.
Optimize scan for the second start code, on the next parse() call so that
to avoid scanning again earlier bytes where we didn't find any start code.
2012-12-18 15:31:51 +01:00
Gwenole Beauchesne
63c455d28d h264: add codec specific decoder unit.
Introduce new GstVaapiDecoderUnitH264 object, which holds the standard
NAL unit header (GstH264NalUnit) and additional parsed header info.
Besides, we now parse headers as early as in the _parse() function so
that to avoid un-necessary creation of sub-buffers in _decode() for
NAL units that are not slices.

This is a performance win by ~+1.1% only.
2012-12-18 15:31:51 +01:00
Gwenole Beauchesne
7e6660fcae h264: initial port to new GstVaapiDecoder API 2012-12-18 15:31:51 +01:00
Gwenole Beauchesne
74533de9c6 Port GstVaapiFrameStore to GstVaapiMiniObject. 2012-12-18 15:31:51 +01:00
Gwenole Beauchesne
f88374d642 Port codec objects to GstVaapiMiniObject. 2012-12-18 15:31:51 +01:00
Gwenole Beauchesne
1bd5ab4db3 h264: initialize VA context before allocating the first slice.
Fix decode_slice() to ensure a VA context exists prior to creating a
new GstVaapiSliceH264, which invokes vaCreateBuffer() with some VA
context ID. i.e. the latter was not initialized, thus causing failures
on Cedar Trail for example.
2012-12-17 14:33:52 +01:00
Gwenole Beauchesne
cb0da4ed7a h264: fix picture size in macroblocks.
The picture size signalled by sps->{width,height} is the actual size with
cropping applied, not the original size derived from pic_width_in_mbs_minus1
and pic_height_in_map_units_minus1. VA driver expects that original size,
uncropped.

There is another issue pending: frame cropping information needs to be
taken care of.
2012-11-16 18:05:28 +01:00
Gwenole Beauchesne
1e506ad6ee h264: fix incorrect integration of previous commit (4d31e1e).
git am got confused somehow, though the end result doesn't change at
all since we require both SPS and PPS to be parsed prior to decoding
the first slice.
2012-11-14 19:23:32 +01:00
Gwenole Beauchesne
4d31e1e58a h264: start decoding slices after first SPS/PPS activation.
Only start decoding slices when at least one SPS and PPS got activated.
This fixes cases when a source represents a substream of another stream
and no SPS and PPS was inserted before the first slice of the generated
substream.
2012-11-14 18:55:05 +01:00
Gwenole Beauchesne
1fc397affd h264: fix VAPictureParameterBufferH264.ReferenceFrames[] construction.
... for interlaced streams. The short_ref[] and long_ref[] arrays may
contain up to 32 fields but VA ReferenceFrames[] array expects up to
16 reference frames, thus including both fields.
2012-11-14 17:53:57 +01:00
Gwenole Beauchesne
f196605fc8 h264: fix interlaced stream decoding with MMCO.
Fix decoding of interlaced streams when adaptive_ref_pic_marking_mode_flag
is equal to 1, i.e. when memory management control operations are used. In
particular, when field_pic_flag is set to 0, the new reference flags shall
be applied to both fields.
2012-11-14 17:53:57 +01:00
Gwenole Beauchesne
2c13b17cdb h264: add initial support for interlaced streams.
Decoded frames are only output when they are complete, i.e. when both
fields are decoded. This also means that the "interlaced" caps is not
propagated to vaapipostproc or vaapisink elements. Another limitation
is that interlaced bitstreams with MMCO are unlikely to work.
2012-11-14 17:53:55 +01:00
Gwenole Beauchesne
c59d935505 h264: split remove_reference_at() into finer units.
Split remove_reference_at() into a function that actually removes the
specified entry from the short-term or long-term reference picture array,
and a function that sets reference flags to the desired value, possibly
zero. The latters marks the picture as "unused for reference".
2012-11-14 17:39:19 +01:00
Gwenole Beauchesne
e530c57741 h264: add picture structure for reference picture marking process.
Introduce new `structure' field to the H.264 specific picture structure
so that to simplify the reference picture marking process. That local
picture structure is derived from the original picture structure, as
defined by the syntax elements field_pic_flag and bottom_field_flag.
2012-11-14 17:39:19 +01:00
Gwenole Beauchesne
bbbf3741ff h264: introduce new frame store structure.
The frame store represents a Decoded Picture Buffer entry, which can
hold up to two fields. So far, the frame store is only used to hold
full frames.
2012-11-14 17:39:19 +01:00
Gwenole Beauchesne
afddf11e22 h264: minor clean-ups.
Move DPB flush up if the current picture to decode is an IDR. Besides,
don't bother to check for IDR pictures in dpb_add() function since an
explicit DPB flush was already performed in this case.
2012-10-31 16:37:14 +01:00
Gwenole Beauchesne
d180a3a9f6 h264: simplify reference picture marking process.
... to build the short_ref[] and long_ref[] lists from the DPB, instead
of maintaining them separately. This avoids refs/unrefs while making it
possible to generate the list based on the actual picture structure.

This also ensures that the list of generated ReferenceFrames[] actually
matches what reference frames are available in the DPB. i.e. short_ref[]
and long_ref[] entries are implied from the DPB, so there is no risk of
having "dangling" references.
2012-10-31 15:05:54 +01:00
Gwenole Beauchesne
3480fcc8d7 h264: introduce per-field POC in GstVaapiPictureH264.
Use the POC member available in the GstVaapiPicture base class and
get rid of the dependency on the local VAPictureH264 TopFieldOrderCnt
and BottomFieldOrderCnt. Rather, use a simple field_poc[] array
initialized to INT_MAX, so that to simplify picture POC calculation
for non frame pictures.
2012-10-31 15:05:54 +01:00
Gwenole Beauchesne
3c721e1123 h264: introduce GST_VAAPI_PICTURE_{SHORT,LONG}_TERM_REFERENCE flags.
Further get rid of GstVaapiPictureH264-local VAPictureH264.flags for
reference bits, thus simplifying the reference picture marking process
to only track a single set of reference flags. Also introduce a new
long_term_frame_idx member.
2012-10-31 15:05:54 +01:00
Gwenole Beauchesne
af22813f59 h264: introduce GST_VAAPI_PICTURE_FLAG_IDR flag. 2012-10-31 15:05:54 +01:00
Gwenole Beauchesne
b35ccab294 h264: fill in GstVaapiPicture structure.
... and get rid of local VAPictureH264.flags fields in GstVaapiPictureH264.
2012-10-31 15:05:54 +01:00