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FFmpeg/libavcodec/vaapi_vc1.c

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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 "vaapi_internal.h"
#include "vc1.h"
#include "vc1data.h"
/** Translates 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;
}
/** Checks whether the MVTYPEMB bitplane is present */
static inline int vc1_has_MVTYPEMB_bitplane(VC1Context *v)
{
if (v->mv_type_is_raw)
return 0;
return (v->s.pict_type == FF_P_TYPE &&
(v->mv_mode == MV_PMODE_MIXED_MV ||
(v->mv_mode == MV_PMODE_INTENSITY_COMP &&
v->mv_mode2 == MV_PMODE_MIXED_MV)));
}
/** Checks whether the SKIPMB bitplane is present */
static inline int vc1_has_SKIPMB_bitplane(VC1Context *v)
{
if (v->skip_is_raw)
return 0;
return (v->s.pict_type == FF_P_TYPE ||
(v->s.pict_type == FF_B_TYPE && !v->bi_type));
}
/** Checks whether the DIRECTMB bitplane is present */
static inline int vc1_has_DIRECTMB_bitplane(VC1Context *v)
{
if (v->dmb_is_raw)
return 0;
return v->s.pict_type == FF_B_TYPE && !v->bi_type;
}
/** Checks whether the ACPRED bitplane is present */
static inline int vc1_has_ACPRED_bitplane(VC1Context *v)
{
if (v->acpred_is_raw)
return 0;
return (v->profile == PROFILE_ADVANCED &&
(v->s.pict_type == FF_I_TYPE ||
(v->s.pict_type == FF_B_TYPE && v->bi_type)));
}
/** Check whether the OVERFLAGS bitplane is present */
static inline int vc1_has_OVERFLAGS_bitplane(VC1Context *v)
{
if (v->overflg_is_raw)
return 0;
return (v->profile == PROFILE_ADVANCED &&
(v->s.pict_type == FF_I_TYPE ||
(v->s.pict_type == FF_B_TYPE && v->bi_type)) &&
(v->overlap && v->pq <= 8) &&
v->condover == CONDOVER_SELECT);
}
/** Reconstruct bitstream PTYPE (7.1.1.4, index into Table-35) */
static int vc1_get_PTYPE(VC1Context *v)
{
MpegEncContext * const s = &v->s;
switch (s->pict_type) {
case FF_I_TYPE: return 0;
case FF_P_TYPE: return v->p_frame_skipped ? 4 : 1;
case FF_B_TYPE: return v->bi_type ? 3 : 2;
}
return 0;
}
/** Reconstruct bitstream MVMODE (7.1.1.32) */
static inline VAMvModeVC1 vc1_get_MVMODE(VC1Context *v)
{
if (v->s.pict_type == FF_P_TYPE ||
(v->s.pict_type == FF_B_TYPE && !v->bi_type))
return get_VAMvModeVC1(v->mv_mode);
return 0;
}
/** Reconstruct bitstream MVMODE2 (7.1.1.33) */
static inline VAMvModeVC1 vc1_get_MVMODE2(VC1Context *v)
{
if (v->s.pict_type == FF_P_TYPE && v->mv_mode == MV_PMODE_INTENSITY_COMP)
return get_VAMvModeVC1(v->mv_mode2);
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)
{
VC1Context * const v = avctx->priv_data;
MpegEncContext * const s = &v->s;
struct vaapi_context * const vactx = avctx->hwaccel_context;
VAPictureParameterBufferVC1 *pic_param;
dprintf(avctx, "vaapi_vc1_start_frame()\n");
vactx->slice_param_size = sizeof(VASliceParameterBufferVC1);
/* Fill in VAPictureParameterBufferVC1 */
pic_param = ff_vaapi_alloc_pic_param(vactx, sizeof(VAPictureParameterBufferVC1));
if (!pic_param)
return -1;
pic_param->forward_reference_picture = VA_INVALID_ID;
pic_param->backward_reference_picture = VA_INVALID_ID;
pic_param->inloop_decoded_picture = VA_INVALID_ID;
pic_param->sequence_fields.value = 0; /* reset all bits */
pic_param->sequence_fields.bits.pulldown = v->broadcast;
pic_param->sequence_fields.bits.interlace = v->interlace;
pic_param->sequence_fields.bits.tfcntrflag = v->tfcntrflag;
pic_param->sequence_fields.bits.finterpflag = v->finterpflag;
pic_param->sequence_fields.bits.psf = v->psf;
pic_param->sequence_fields.bits.multires = v->multires;
pic_param->sequence_fields.bits.overlap = v->overlap;
pic_param->sequence_fields.bits.syncmarker = s->resync_marker;
pic_param->sequence_fields.bits.rangered = v->rangered;
pic_param->sequence_fields.bits.max_b_frames = s->avctx->max_b_frames;
pic_param->coded_width = s->avctx->coded_width;
pic_param->coded_height = s->avctx->coded_height;
pic_param->entrypoint_fields.value = 0; /* reset all bits */
pic_param->entrypoint_fields.bits.broken_link = v->broken_link;
pic_param->entrypoint_fields.bits.closed_entry = v->closed_entry;
pic_param->entrypoint_fields.bits.panscan_flag = v->panscanflag;
pic_param->entrypoint_fields.bits.loopfilter = s->loop_filter;
pic_param->conditional_overlap_flag = v->condover;
pic_param->fast_uvmc_flag = v->fastuvmc;
pic_param->range_mapping_fields.value = 0; /* reset all bits */
pic_param->range_mapping_fields.bits.luma_flag = v->range_mapy_flag;
pic_param->range_mapping_fields.bits.luma = v->range_mapy;
pic_param->range_mapping_fields.bits.chroma_flag = v->range_mapuv_flag;
pic_param->range_mapping_fields.bits.chroma = v->range_mapuv;
pic_param->b_picture_fraction = v->bfraction_lut_index;
pic_param->cbp_table = v->cbpcy_vlc ? v->cbpcy_vlc - ff_vc1_cbpcy_p_vlc : 0;
pic_param->mb_mode_table = 0; /* XXX: interlaced frame */
pic_param->range_reduction_frame = v->rangeredfrm;
pic_param->rounding_control = v->rnd;
pic_param->post_processing = v->postproc;
pic_param->picture_resolution_index = v->respic;
pic_param->luma_scale = v->lumscale;
pic_param->luma_shift = v->lumshift;
pic_param->picture_fields.value = 0; /* reset all bits */
pic_param->picture_fields.bits.picture_type = vc1_get_PTYPE(v);
pic_param->picture_fields.bits.frame_coding_mode = v->fcm;
pic_param->picture_fields.bits.top_field_first = v->tff;
pic_param->picture_fields.bits.is_first_field = v->fcm == 0; /* XXX: interlaced frame */
pic_param->picture_fields.bits.intensity_compensation = v->mv_mode == MV_PMODE_INTENSITY_COMP;
pic_param->raw_coding.value = 0; /* reset all bits */
pic_param->raw_coding.flags.mv_type_mb = v->mv_type_is_raw;
pic_param->raw_coding.flags.direct_mb = v->dmb_is_raw;
pic_param->raw_coding.flags.skip_mb = v->skip_is_raw;
pic_param->raw_coding.flags.field_tx = 0; /* XXX: interlaced frame */
pic_param->raw_coding.flags.forward_mb = 0; /* XXX: interlaced frame */
pic_param->raw_coding.flags.ac_pred = v->acpred_is_raw;
pic_param->raw_coding.flags.overflags = v->overflg_is_raw;
pic_param->bitplane_present.value = 0; /* reset all bits */
pic_param->bitplane_present.flags.bp_mv_type_mb = vc1_has_MVTYPEMB_bitplane(v);
pic_param->bitplane_present.flags.bp_direct_mb = vc1_has_DIRECTMB_bitplane(v);
pic_param->bitplane_present.flags.bp_skip_mb = vc1_has_SKIPMB_bitplane(v);
pic_param->bitplane_present.flags.bp_field_tx = 0; /* XXX: interlaced frame */
pic_param->bitplane_present.flags.bp_forward_mb = 0; /* XXX: interlaced frame */
pic_param->bitplane_present.flags.bp_ac_pred = vc1_has_ACPRED_bitplane(v);
pic_param->bitplane_present.flags.bp_overflags = vc1_has_OVERFLAGS_bitplane(v);
pic_param->reference_fields.value = 0; /* reset all bits */
pic_param->reference_fields.bits.reference_distance_flag = v->refdist_flag;
pic_param->reference_fields.bits.reference_distance = 0; /* XXX: interlaced frame */
pic_param->reference_fields.bits.num_reference_pictures = 0; /* XXX: interlaced frame */
pic_param->reference_fields.bits.reference_field_pic_indicator = 0; /* XXX: interlaced frame */
pic_param->mv_fields.value = 0; /* reset all bits */
pic_param->mv_fields.bits.mv_mode = vc1_get_MVMODE(v);
pic_param->mv_fields.bits.mv_mode2 = vc1_get_MVMODE2(v);
pic_param->mv_fields.bits.mv_table = s->mv_table_index;
pic_param->mv_fields.bits.two_mv_block_pattern_table = 0; /* XXX: interlaced frame */
pic_param->mv_fields.bits.four_mv_switch = 0; /* XXX: interlaced frame */
pic_param->mv_fields.bits.four_mv_block_pattern_table = 0; /* XXX: interlaced frame */
pic_param->mv_fields.bits.extended_mv_flag = v->extended_mv;
pic_param->mv_fields.bits.extended_mv_range = v->mvrange;
pic_param->mv_fields.bits.extended_dmv_flag = v->extended_dmv;
pic_param->mv_fields.bits.extended_dmv_range = 0; /* XXX: interlaced frame */
pic_param->pic_quantizer_fields.value = 0; /* reset all bits */
pic_param->pic_quantizer_fields.bits.dquant = v->dquant;
pic_param->pic_quantizer_fields.bits.quantizer = v->quantizer_mode;
pic_param->pic_quantizer_fields.bits.half_qp = v->halfpq;
pic_param->pic_quantizer_fields.bits.pic_quantizer_scale = v->pq;
pic_param->pic_quantizer_fields.bits.pic_quantizer_type = v->pquantizer;
pic_param->pic_quantizer_fields.bits.dq_frame = v->dquantfrm;
pic_param->pic_quantizer_fields.bits.dq_profile = v->dqprofile;
pic_param->pic_quantizer_fields.bits.dq_sb_edge = v->dqprofile == DQPROFILE_SINGLE_EDGE ? v->dqsbedge : 0;
pic_param->pic_quantizer_fields.bits.dq_db_edge = v->dqprofile == DQPROFILE_DOUBLE_EDGES ? v->dqsbedge : 0;
pic_param->pic_quantizer_fields.bits.dq_binary_level = v->dqbilevel;
pic_param->pic_quantizer_fields.bits.alt_pic_quantizer = v->altpq;
pic_param->transform_fields.value = 0; /* reset all bits */
pic_param->transform_fields.bits.variable_sized_transform_flag = v->vstransform;
pic_param->transform_fields.bits.mb_level_transform_type_flag = v->ttmbf;
pic_param->transform_fields.bits.frame_level_transform_type = v->ttfrm;
pic_param->transform_fields.bits.transform_ac_codingset_idx1 = v->c_ac_table_index;
pic_param->transform_fields.bits.transform_ac_codingset_idx2 = v->y_ac_table_index;
pic_param->transform_fields.bits.intra_transform_dc_table = v->s.dc_table_index;
switch (s->pict_type) {
case FF_B_TYPE:
pic_param->backward_reference_picture = ff_vaapi_get_surface_id(&s->next_picture);
// fall-through
case FF_P_TYPE:
pic_param->forward_reference_picture = ff_vaapi_get_surface_id(&s->last_picture);
break;
}
if (pic_param->bitplane_present.value) {
uint8_t *bitplane;
const uint8_t *ff_bp[3];
int x, y, n;
switch (s->pict_type) {
case FF_P_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_mv_type_mb ? v->mv_type_mb_plane : NULL;
break;
case FF_B_TYPE:
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] = NULL; /* XXX: interlaced frame (FORWARD plane) */
break;
}
/* fall-through (BI-type) */
case FF_I_TYPE:
ff_bp[0] = NULL; /* XXX: interlaced frame (FIELDTX plane) */
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;
}
bitplane = ff_vaapi_alloc_bitplane(vactx, (s->mb_width * s->mb_height + 1) / 2);
if (!bitplane)
return -1;
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;
}
return 0;
}
static int vaapi_vc1_end_frame(AVCodecContext *avctx)
{
VC1Context * const v = avctx->priv_data;
return ff_vaapi_common_end_frame(&v->s);
}
static int vaapi_vc1_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
{
VC1Context * const v = avctx->priv_data;
MpegEncContext * const s = &v->s;
VASliceParameterBufferVC1 *slice_param;
dprintf(avctx, "vaapi_vc1_decode_slice(): buffer %p, size %d\n", buffer, size);
/* Current bit buffer is beyond any marker for VC-1, so skip it */
if (avctx->codec_id == CODEC_ID_VC1 && IS_MARKER(AV_RB32(buffer))) {
buffer += 4;
size -= 4;
}
/* Fill in VASliceParameterBufferVC1 */
slice_param = (VASliceParameterBufferVC1 *)ff_vaapi_alloc_slice(avctx->hwaccel_context, buffer, size);
if (!slice_param)
return -1;
slice_param->macroblock_offset = get_bits_count(&s->gb);
slice_param->slice_vertical_position = s->mb_y;
return 0;
}
#if CONFIG_WMV3_VAAPI_HWACCEL
AVHWAccel wmv3_vaapi_hwaccel = {
.name = "wmv3_vaapi",
.type = AVMEDIA_TYPE_VIDEO,
.id = CODEC_ID_WMV3,
.pix_fmt = PIX_FMT_VAAPI_VLD,
.capabilities = 0,
.start_frame = vaapi_vc1_start_frame,
.end_frame = vaapi_vc1_end_frame,
.decode_slice = vaapi_vc1_decode_slice,
.priv_data_size = 0,
};
#endif
AVHWAccel vc1_vaapi_hwaccel = {
.name = "vc1_vaapi",
.type = AVMEDIA_TYPE_VIDEO,
.id = CODEC_ID_VC1,
.pix_fmt = PIX_FMT_VAAPI_VLD,
.capabilities = 0,
.start_frame = vaapi_vc1_start_frame,
.end_frame = vaapi_vc1_end_frame,
.decode_slice = vaapi_vc1_decode_slice,
.priv_data_size = 0,
};