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FFmpeg/libavcodec/vaapi_vc1.c
Jerome Borsboom 8132d362fa avcodec/vaapi: do not parse MVMODE for VC-1 interlaced frame pictures 
Interlaced frame pictures do not contain the MVMODE or MVMODE2 bitstream
element. Trying to parse this element and passing a nonzero value to the
hardware decoder results in small inaccuracies in the decoded picture.

Signed-off-by: Jerome Borsboom <jerome.borsboom@carpalis.nl>
2018-04-23 23:11:29 +01:00

530 lines
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/*
* VC-1 HW decode acceleration through VA API
*
* Copyright (C) 2008-2009 Splitted-Desktop Systems
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "hwaccel.h"
#include "internal.h"
#include "vaapi_decode.h"
#include "vc1.h"
#include "vc1data.h"
/** Translate FFmpeg MV modes to VA API */
static int get_VAMvModeVC1(enum MVModes mv_mode)
{
switch (mv_mode) {
case MV_PMODE_1MV_HPEL_BILIN: return VAMvMode1MvHalfPelBilinear;
case MV_PMODE_1MV: return VAMvMode1Mv;
case MV_PMODE_1MV_HPEL: return VAMvMode1MvHalfPel;
case MV_PMODE_MIXED_MV: return VAMvModeMixedMv;
case MV_PMODE_INTENSITY_COMP: return VAMvModeIntensityCompensation;
}
return 0;
}
/** Check whether the MVTYPEMB bitplane is present */
static inline int vc1_has_MVTYPEMB_bitplane(const VC1Context *v)
{
if (v->mv_type_is_raw)
return 0;
return v->fcm == PROGRESSIVE &&
(v->s.pict_type == AV_PICTURE_TYPE_P && !v->p_frame_skipped) &&
(v->mv_mode == MV_PMODE_MIXED_MV ||
(v->mv_mode == MV_PMODE_INTENSITY_COMP &&
v->mv_mode2 == MV_PMODE_MIXED_MV));
}
/** Check whether the SKIPMB bitplane is present */
static inline int vc1_has_SKIPMB_bitplane(const VC1Context *v)
{
if (v->skip_is_raw)
return 0;
return (v->fcm == PROGRESSIVE || v->fcm == ILACE_FRAME) &&
((v->s.pict_type == AV_PICTURE_TYPE_P && !v->p_frame_skipped) ||
(v->s.pict_type == AV_PICTURE_TYPE_B && !v->bi_type));
}
/** Check whether the DIRECTMB bitplane is present */
static inline int vc1_has_DIRECTMB_bitplane(const VC1Context *v)
{
if (v->dmb_is_raw)
return 0;
return (v->fcm == PROGRESSIVE || v->fcm == ILACE_FRAME) &&
(v->s.pict_type == AV_PICTURE_TYPE_B && !v->bi_type);
}
/** Check whether the ACPRED bitplane is present */
static inline int vc1_has_ACPRED_bitplane(const VC1Context *v)
{
if (v->acpred_is_raw)
return 0;
return v->profile == PROFILE_ADVANCED &&
(v->s.pict_type == AV_PICTURE_TYPE_I ||
(v->s.pict_type == AV_PICTURE_TYPE_B && v->bi_type));
}
/** Check whether the OVERFLAGS bitplane is present */
static inline int vc1_has_OVERFLAGS_bitplane(const VC1Context *v)
{
if (v->overflg_is_raw)
return 0;
return v->profile == PROFILE_ADVANCED &&
(v->s.pict_type == AV_PICTURE_TYPE_I ||
(v->s.pict_type == AV_PICTURE_TYPE_B && v->bi_type)) &&
(v->overlap && v->pq <= 8) &&
v->condover == CONDOVER_SELECT;
}
/** Check whether the FIELDTX bitplane is present */
static inline int vc1_has_FIELDTX_bitplane(const VC1Context *v)
{
if (v->fieldtx_is_raw)
return 0;
return v->fcm == ILACE_FRAME &&
(v->s.pict_type == AV_PICTURE_TYPE_I ||
(v->s.pict_type == AV_PICTURE_TYPE_B && v->bi_type));
}
/** Check whether the FORWARDMB bitplane is present */
static inline int vc1_has_FORWARDMB_bitplane(const VC1Context *v)
{
if (v->fmb_is_raw)
return 0;
return v->fcm == ILACE_FIELD &&
(v->s.pict_type == AV_PICTURE_TYPE_B && !v->bi_type);
}
/** Reconstruct bitstream PTYPE (7.1.1.4, index into Table-35) */
static int vc1_get_PTYPE(const VC1Context *v)
{
const MpegEncContext *s = &v->s;
switch (s->pict_type) {
case AV_PICTURE_TYPE_I: return 0;
case AV_PICTURE_TYPE_P: return v->p_frame_skipped ? 4 : 1;
case AV_PICTURE_TYPE_B: return v->bi_type ? 3 : 2;
}
return 0;
}
/** Reconstruct bitstream FPTYPE (9.1.1.42, index into Table-105) */
static int vc1_get_FPTYPE(const VC1Context *v)
{
const MpegEncContext *s = &v->s;
switch (s->pict_type) {
case AV_PICTURE_TYPE_I: return 0;
case AV_PICTURE_TYPE_P: return 3;
case AV_PICTURE_TYPE_B: return v->bi_type ? 7 : 4;
}
return 0;
}
/** Reconstruct bitstream MVMODE (7.1.1.32) */
static inline VAMvModeVC1 vc1_get_MVMODE(const VC1Context *v)
{
if ((v->fcm == PROGRESSIVE || v->fcm == ILACE_FIELD) &&
((v->s.pict_type == AV_PICTURE_TYPE_P && !v->p_frame_skipped) ||
(v->s.pict_type == AV_PICTURE_TYPE_B && !v->bi_type)))
return get_VAMvModeVC1(v->mv_mode);
return 0;
}
/** Reconstruct bitstream MVMODE2 (7.1.1.33) */
static inline VAMvModeVC1 vc1_get_MVMODE2(const VC1Context *v)
{
if ((v->fcm == PROGRESSIVE || v->fcm == ILACE_FIELD) &&
(v->s.pict_type == AV_PICTURE_TYPE_P && !v->p_frame_skipped) &&
v->mv_mode == MV_PMODE_INTENSITY_COMP)
return get_VAMvModeVC1(v->mv_mode2);
return 0;
}
av_unused static inline int vc1_get_INTCOMPFIELD(const VC1Context *v)
{
if ((v->s.pict_type == AV_PICTURE_TYPE_P && !v->p_frame_skipped) &&
v->fcm == ILACE_FIELD &&
v->mv_mode == MV_PMODE_INTENSITY_COMP)
switch (v->intcompfield) {
case 1: return 1;
case 2: return 2;
case 3: return 0;
}
return 0;
}
static inline int vc1_get_LUMSCALE(const VC1Context *v)
{
if (v->s.pict_type == AV_PICTURE_TYPE_P && !v->p_frame_skipped) {
if ((v->fcm == PROGRESSIVE && v->mv_mode == MV_PMODE_INTENSITY_COMP) ||
(v->fcm == ILACE_FRAME && v->intcomp))
return v->lumscale;
else if (v->fcm == ILACE_FIELD && v->mv_mode == MV_PMODE_INTENSITY_COMP)
switch (v->intcompfield) {
case 1: return v->lumscale;
case 2: return v->lumscale2;
case 3: return v->lumscale;
}
}
return 0;
}
static inline int vc1_get_LUMSHIFT(const VC1Context *v)
{
if (v->s.pict_type == AV_PICTURE_TYPE_P && !v->p_frame_skipped) {
if ((v->fcm == PROGRESSIVE && v->mv_mode == MV_PMODE_INTENSITY_COMP) ||
(v->fcm == ILACE_FRAME && v->intcomp))
return v->lumshift;
else if (v->fcm == ILACE_FIELD && v->mv_mode == MV_PMODE_INTENSITY_COMP)
switch (v->intcompfield) {
case 1: return v->lumshift;
case 2: return v->lumshift2;
case 3: return v->lumshift;
}
}
return 0;
}
av_unused static inline int vc1_get_LUMSCALE2(const VC1Context *v)
{
if ((v->s.pict_type == AV_PICTURE_TYPE_P && !v->p_frame_skipped) &&
v->fcm == ILACE_FIELD &&
v->mv_mode == MV_PMODE_INTENSITY_COMP &&
v->intcompfield == 3)
return v->lumscale2;
return 0;
}
av_unused static inline int vc1_get_LUMSHIFT2(const VC1Context *v)
{
if ((v->s.pict_type == AV_PICTURE_TYPE_P && !v->p_frame_skipped) &&
v->fcm == ILACE_FIELD &&
v->mv_mode == MV_PMODE_INTENSITY_COMP &&
v->intcompfield == 3)
return v->lumshift2;
return 0;
}
/** Reconstruct bitstream TTFRM (7.1.1.41, Table-53) */
static inline int vc1_get_TTFRM(const VC1Context *v)
{
switch (v->ttfrm) {
case TT_8X8: return 0;
case TT_8X4: return 1;
case TT_4X8: return 2;
case TT_4X4: return 3;
}
return 0;
}
/** Pack FFmpeg bitplanes into a VABitPlaneBuffer element */
static inline void vc1_pack_bitplanes(uint8_t *bitplane, int n, const uint8_t *ff_bp[3], int x, int y, int stride)
{
const int bitplane_index = n / 2;
const int ff_bp_index = y * stride + x;
uint8_t v = 0;
if (ff_bp[0])
v = ff_bp[0][ff_bp_index];
if (ff_bp[1])
v |= ff_bp[1][ff_bp_index] << 1;
if (ff_bp[2])
v |= ff_bp[2][ff_bp_index] << 2;
bitplane[bitplane_index] = (bitplane[bitplane_index] << 4) | v;
}
static int vaapi_vc1_start_frame(AVCodecContext *avctx, av_unused const uint8_t *buffer, av_unused uint32_t size)
{
const VC1Context *v = avctx->priv_data;
const MpegEncContext *s = &v->s;
VAAPIDecodePicture *pic = s->current_picture_ptr->hwaccel_picture_private;
VAPictureParameterBufferVC1 pic_param;
int err;
pic->output_surface = ff_vaapi_get_surface_id(s->current_picture_ptr->f);
pic_param = (VAPictureParameterBufferVC1) {
.forward_reference_picture = VA_INVALID_ID,
.backward_reference_picture = VA_INVALID_ID,
.inloop_decoded_picture = VA_INVALID_ID,
.sequence_fields.bits = {
.pulldown = v->broadcast,
.interlace = v->interlace,
.tfcntrflag = v->tfcntrflag,
.finterpflag = v->finterpflag,
.psf = v->psf,
.multires = v->multires,
.overlap = v->overlap,
.syncmarker = v->resync_marker,
.rangered = v->rangered,
.max_b_frames = s->avctx->max_b_frames,
.profile = v->profile,
},
.coded_width = s->avctx->coded_width,
.coded_height = s->avctx->coded_height,
.entrypoint_fields.bits = {
.broken_link = v->broken_link,
.closed_entry = v->closed_entry,
.panscan_flag = v->panscanflag,
.loopfilter = s->loop_filter,
},
.conditional_overlap_flag = v->condover,
.fast_uvmc_flag = v->fastuvmc,
.range_mapping_fields.bits = {
.luma_flag = v->range_mapy_flag,
.luma = v->range_mapy,
.chroma_flag = v->range_mapuv_flag,
.chroma = v->range_mapuv,
},
.b_picture_fraction = v->bfraction_lut_index,
.cbp_table = (v->fcm == PROGRESSIVE ? v->cbptab : v->icbptab),
.mb_mode_table = v->mbmodetab,
.range_reduction_frame = v->rangeredfrm,
.rounding_control = v->rnd,
.post_processing = v->postproc,
.picture_resolution_index = v->respic,
.picture_fields.bits = {
.picture_type = (v->fcm == ILACE_FIELD ? vc1_get_FPTYPE(v) : vc1_get_PTYPE(v)),
.frame_coding_mode = v->fcm,
.top_field_first = v->tff,
.is_first_field = !v->second_field,
.intensity_compensation = v->intcomp,
},
.luma_scale = vc1_get_LUMSCALE(v),
.luma_shift = vc1_get_LUMSHIFT(v),
#if VA_CHECK_VERSION(1, 1, 0)
.luma_scale2 = vc1_get_LUMSCALE2(v),
.luma_shift2 = vc1_get_LUMSHIFT2(v),
.intensity_compensation_field = vc1_get_INTCOMPFIELD(v),
#endif
.raw_coding.flags = {
.mv_type_mb = v->mv_type_is_raw,
.direct_mb = v->dmb_is_raw,
.skip_mb = v->skip_is_raw,
.field_tx = v->fieldtx_is_raw,
.forward_mb = v->fmb_is_raw,
.ac_pred = v->acpred_is_raw,
.overflags = v->overflg_is_raw,
},
.bitplane_present.flags = {
.bp_mv_type_mb = vc1_has_MVTYPEMB_bitplane(v),
.bp_direct_mb = vc1_has_DIRECTMB_bitplane(v),
.bp_skip_mb = vc1_has_SKIPMB_bitplane(v),
.bp_field_tx = vc1_has_FIELDTX_bitplane(v),
.bp_forward_mb = vc1_has_FORWARDMB_bitplane(v),
.bp_ac_pred = vc1_has_ACPRED_bitplane(v),
.bp_overflags = vc1_has_OVERFLAGS_bitplane(v),
},
.reference_fields.bits = {
.reference_distance_flag = v->refdist_flag,
.reference_distance = v->refdist,
.num_reference_pictures = v->numref,
.reference_field_pic_indicator = v->reffield,
},
.mv_fields.bits = {
.mv_mode = vc1_get_MVMODE(v),
.mv_mode2 = vc1_get_MVMODE2(v),
.mv_table = (v->fcm == PROGRESSIVE ? s->mv_table_index : v->imvtab),
.two_mv_block_pattern_table = v->twomvbptab,
.four_mv_switch = v->fourmvswitch,
.four_mv_block_pattern_table = v->fourmvbptab,
.extended_mv_flag = v->extended_mv,
.extended_mv_range = v->mvrange,
.extended_dmv_flag = v->extended_dmv,
.extended_dmv_range = v->dmvrange,
},
.pic_quantizer_fields.bits = {
.dquant = v->dquant,
.quantizer = v->quantizer_mode,
.half_qp = v->halfpq,
.pic_quantizer_scale = v->pq,
.pic_quantizer_type = v->pquantizer,
.dq_frame = v->dquantfrm,
.dq_profile = v->dqprofile,
.dq_sb_edge = v->dqprofile == DQPROFILE_SINGLE_EDGE ? v->dqsbedge : 0,
.dq_db_edge = v->dqprofile == DQPROFILE_DOUBLE_EDGES ? v->dqsbedge : 0,
.dq_binary_level = v->dqbilevel,
.alt_pic_quantizer = v->altpq,
},
.transform_fields.bits = {
.variable_sized_transform_flag = v->vstransform,
.mb_level_transform_type_flag = v->ttmbf,
.frame_level_transform_type = vc1_get_TTFRM(v),
.transform_ac_codingset_idx1 = v->c_ac_table_index,
.transform_ac_codingset_idx2 = v->y_ac_table_index,
.intra_transform_dc_table = v->s.dc_table_index,
},
};
switch (s->pict_type) {
case AV_PICTURE_TYPE_B:
pic_param.backward_reference_picture = ff_vaapi_get_surface_id(s->next_picture.f);
// fall-through
case AV_PICTURE_TYPE_P:
pic_param.forward_reference_picture = ff_vaapi_get_surface_id(s->last_picture.f);
break;
}
err = ff_vaapi_decode_make_param_buffer(avctx, pic,
VAPictureParameterBufferType,
&pic_param, sizeof(pic_param));
if (err)
goto fail;
if (pic_param.bitplane_present.value & 0x7f) {
uint8_t *bitplane;
const uint8_t *ff_bp[3];
int x, y, n;
size_t size = (s->mb_width * s->mb_height + 1) / 2;
bitplane = av_mallocz(size);
if (!bitplane) {
err = AVERROR(ENOMEM);
goto fail;
}
switch (s->pict_type) {
case AV_PICTURE_TYPE_P:
ff_bp[0] = pic_param.bitplane_present.flags.bp_direct_mb ? v->direct_mb_plane : NULL;
ff_bp[1] = pic_param.bitplane_present.flags.bp_skip_mb ? s->mbskip_table : NULL;
ff_bp[2] = pic_param.bitplane_present.flags.bp_mv_type_mb ? v->mv_type_mb_plane : NULL;
break;
case AV_PICTURE_TYPE_B:
if (!v->bi_type) {
ff_bp[0] = pic_param.bitplane_present.flags.bp_direct_mb ? v->direct_mb_plane : NULL;
ff_bp[1] = pic_param.bitplane_present.flags.bp_skip_mb ? s->mbskip_table : NULL;
ff_bp[2] = pic_param.bitplane_present.flags.bp_forward_mb ? v->forward_mb_plane : NULL;
break;
}
/* fall-through (BI-type) */
case AV_PICTURE_TYPE_I:
ff_bp[0] = pic_param.bitplane_present.flags.bp_field_tx ? v->fieldtx_plane : NULL;
ff_bp[1] = pic_param.bitplane_present.flags.bp_ac_pred ? v->acpred_plane : NULL;
ff_bp[2] = pic_param.bitplane_present.flags.bp_overflags ? v->over_flags_plane : NULL;
break;
default:
ff_bp[0] = NULL;
ff_bp[1] = NULL;
ff_bp[2] = NULL;
break;
}
n = 0;
for (y = 0; y < s->mb_height; y++)
for (x = 0; x < s->mb_width; x++, n++)
vc1_pack_bitplanes(bitplane, n, ff_bp, x, y, s->mb_stride);
if (n & 1) /* move last nibble to the high order */
bitplane[n/2] <<= 4;
err = ff_vaapi_decode_make_param_buffer(avctx, pic,
VABitPlaneBufferType,
bitplane, size);
av_free(bitplane);
if (err)
goto fail;
}
return 0;
fail:
ff_vaapi_decode_cancel(avctx, pic);
return err;
}
static int vaapi_vc1_end_frame(AVCodecContext *avctx)
{
VC1Context *v = avctx->priv_data;
MpegEncContext *s = &v->s;
VAAPIDecodePicture *pic = s->current_picture_ptr->hwaccel_picture_private;
int ret;
ret = ff_vaapi_decode_issue(avctx, pic);
if (ret < 0)
goto fail;
ff_mpeg_draw_horiz_band(s, 0, s->avctx->height);
fail:
return ret;
}
static int vaapi_vc1_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
{
const VC1Context *v = avctx->priv_data;
const MpegEncContext *s = &v->s;
VAAPIDecodePicture *pic = s->current_picture_ptr->hwaccel_picture_private;
VASliceParameterBufferVC1 slice_param;
int err;
/* Current bit buffer is beyond any marker for VC-1, so skip it */
if (avctx->codec_id == AV_CODEC_ID_VC1 && IS_MARKER(AV_RB32(buffer))) {
buffer += 4;
size -= 4;
}
slice_param = (VASliceParameterBufferVC1) {
.slice_data_size = size,
.slice_data_offset = 0,
.slice_data_flag = VA_SLICE_DATA_FLAG_ALL,
.macroblock_offset = get_bits_count(&s->gb),
.slice_vertical_position = s->mb_y,
};
err = ff_vaapi_decode_make_slice_buffer(avctx, pic,
&slice_param, sizeof(slice_param),
buffer, size);
if (err < 0) {
ff_vaapi_decode_cancel(avctx, pic);
return err;
}
return 0;
}
#if CONFIG_WMV3_VAAPI_HWACCEL
const AVHWAccel ff_wmv3_vaapi_hwaccel = {
.name = "wmv3_vaapi",
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_WMV3,
.pix_fmt = AV_PIX_FMT_VAAPI,
.start_frame = &vaapi_vc1_start_frame,
.end_frame = &vaapi_vc1_end_frame,
.decode_slice = &vaapi_vc1_decode_slice,
.frame_priv_data_size = sizeof(VAAPIDecodePicture),
.init = &ff_vaapi_decode_init,
.uninit = &ff_vaapi_decode_uninit,
.frame_params = &ff_vaapi_common_frame_params,
.priv_data_size = sizeof(VAAPIDecodeContext),
.caps_internal = HWACCEL_CAP_ASYNC_SAFE,
};
#endif
const AVHWAccel ff_vc1_vaapi_hwaccel = {
.name = "vc1_vaapi",
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_VC1,
.pix_fmt = AV_PIX_FMT_VAAPI,
.start_frame = &vaapi_vc1_start_frame,
.end_frame = &vaapi_vc1_end_frame,
.decode_slice = &vaapi_vc1_decode_slice,
.frame_priv_data_size = sizeof(VAAPIDecodePicture),
.init = &ff_vaapi_decode_init,
.uninit = &ff_vaapi_decode_uninit,
.frame_params = &ff_vaapi_common_frame_params,
.priv_data_size = sizeof(VAAPIDecodeContext),
.caps_internal = HWACCEL_CAP_ASYNC_SAFE,
};
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