Add VC-1 bitstream decoding through VA API.

Originally committed as revision 18324 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 355 insertions, 0 deletions

diff --git a/libavcodec/vaapi_vc1.c b/libavcodec/vaapi_vc1.c
new file mode 100644
index 0000000000..e467360b82
--- /dev/null
+++ b/libavcodec/vaapi_vc1.c
@@ -0,0 +1,355 @@
+/*
+ * 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 uint8_t vc1_pack_bitplanes(const uint8_t *ff_bp[3], int x, int y, int stride)
+{
+    const int n = y * stride + x;
+    uint8_t v = 0;
+    if (ff_bp[0])
+        v = ff_bp[0][n];
+    if (ff_bp[1])
+        v |= ff_bp[1][n] << 1;
+    if (ff_bp[2])
+        v |= ff_bp[2][n] << 2;
+    return 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_picture(vactx, sizeof(VAPictureParameterBufferVC1));
+    if (!pic_param)
+        return -1;
+    pic_param->forward_reference_picture                            = 0xffffffff;
+    pic_param->backward_reference_picture                           = 0xffffffff;
+    pic_param->inloop_decoded_picture                               = 0xffffffff;
+    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(&s->next_picture);
+        // fall-through
+    case FF_P_TYPE:
+        pic_param->forward_reference_picture = ff_vaapi_get_surface(&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_height * ((s->mb_width + 1) / 2));
+        if (!bitplane)
+            return -1;
+
+        n = 0;
+        for (y = 0; y < s->mb_height; y++) {
+            for (x = 0; x < s->mb_width; x += 2) {
+                bitplane[n] = vc1_pack_bitplanes(ff_bp, x+1, y, s->mb_stride);
+                bitplane[n] |= (vc1_pack_bitplanes(ff_bp, x, y, s->mb_stride) << 4);
+                ++n;
+            }
+        }
+    }
+    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           = CODEC_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
+
+#if CONFIG_VC1_VAAPI_HWACCEL
+AVHWAccel vc1_vaapi_hwaccel = {
+    .name           = "vc1_vaapi",
+    .type           = CODEC_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,
+};
+#endif