vaapi: Add VP9 hwaccell support

Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>

7 files changed, 179 insertions, 2 deletions

diff --git a/Changelog b/Changelog
index a3d44b4..2b46ddb 100644
--- a/Changelog
+++ b/Changelog
@@ -46,6 +46,7 @@ version <next>:
 - mips64r6 option has been removed
 - DXVA2-accelerated VP9 decoding
 - SOFAlizer: virtual binaural acoustics filter
+- VAAPI VP9 hwaccel
 
 
 version 2.8:
diff --git a/configure b/configure
index 89c98d1..54c9789 100755
--- a/configure
+++ b/configure
@@ -2577,6 +2577,8 @@ vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
 vp9_d3d11va_hwaccel_select="vp9_decoder"
 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
 vp9_dxva2_hwaccel_select="vp9_decoder"
+vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
+vp9_vaapi_hwaccel_select="vp9_decoder"
 wmv3_crystalhd_decoder_select="crystalhd"
 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
@@ -5319,6 +5321,7 @@ check_type "windows.h d3d11.h" "ID3D11VideoContext"
 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
 
 check_type "va/va.h" "VAPictureParameterBufferHEVC"
+check_type "va/va.h" "VADecPictureParameterBufferVP9"
 
 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
 
diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index b924a72..1c7568b 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -751,6 +751,7 @@ OBJS-$(CONFIG_VC1_VAAPI_HWACCEL)          += vaapi_vc1.o
 OBJS-$(CONFIG_VC1_VDPAU_HWACCEL)          += vdpau_vc1.o
 OBJS-$(CONFIG_VP9_D3D11VA_HWACCEL)        += dxva2_vp9.o
 OBJS-$(CONFIG_VP9_DXVA2_HWACCEL)          += dxva2_vp9.o
+OBJS-$(CONFIG_VP9_VAAPI_HWACCEL)          += vaapi_vp9.o
 
 # libavformat dependencies
 OBJS-$(CONFIG_ADTS_MUXER)              += mpeg4audio.o
diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c
index 6361a38..4eeb6f3 100644
--- a/libavcodec/allcodecs.c
+++ b/libavcodec/allcodecs.c
@@ -112,6 +112,7 @@ void avcodec_register_all(void)
     REGISTER_HWACCEL(VC1_QSV,           vc1_qsv);
     REGISTER_HWACCEL(VP9_D3D11VA,       vp9_d3d11va);
     REGISTER_HWACCEL(VP9_DXVA2,         vp9_dxva2);
+    REGISTER_HWACCEL(VP9_VAAPI,         vp9_vaapi);
     REGISTER_HWACCEL(WMV3_D3D11VA,      wmv3_d3d11va);
     REGISTER_HWACCEL(WMV3_DXVA2,        wmv3_dxva2);
     REGISTER_HWACCEL(WMV3_VAAPI,        wmv3_vaapi);
diff --git a/libavcodec/vaapi_vp9.c b/libavcodec/vaapi_vp9.c
new file mode 100644
index 0000000..b360dcb
--- /dev/null
+++ b/libavcodec/vaapi_vp9.c
@@ -0,0 +1,168 @@
+/*
+ * VP9 HW decode acceleration through VA API
+ *
+ * Copyright (C) 2015 Timo Rothenpieler <timo@rothenpieler.org>
+ *
+ * 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 "libavutil/pixdesc.h"
+#include "vaapi_internal.h"
+#include "vp9.h"
+
+static void fill_picture_parameters(AVCodecContext                 *avctx,
+                                    const VP9SharedContext         *h,
+                                    VADecPictureParameterBufferVP9 *pp)
+{
+    const AVPixFmtDescriptor *pixdesc = av_pix_fmt_desc_get(avctx->sw_pix_fmt);
+    int i;
+
+    pp->frame_width = avctx->width;
+    pp->frame_height = avctx->height;
+
+    pp->frame_header_length_in_bytes = h->h.uncompressed_header_size;
+    pp->first_partition_size = h->h.compressed_header_size;
+
+    pp->profile = h->h.profile;
+
+    pp->filter_level = h->h.filter.level;
+    pp->sharpness_level = h->h.filter.sharpness;
+    pp->log2_tile_rows = h->h.tiling.log2_tile_rows;
+    pp->log2_tile_columns = h->h.tiling.log2_tile_cols;
+
+    pp->pic_fields.bits.subsampling_x = pixdesc->log2_chroma_w;
+    pp->pic_fields.bits.subsampling_y = pixdesc->log2_chroma_h;
+    pp->pic_fields.bits.frame_type = !h->h.keyframe;
+    pp->pic_fields.bits.show_frame = !h->h.invisible;
+    pp->pic_fields.bits.error_resilient_mode = h->h.errorres;
+    pp->pic_fields.bits.intra_only = h->h.intraonly;
+    pp->pic_fields.bits.allow_high_precision_mv = h->h.keyframe ? 0 : h->h.highprecisionmvs;
+    pp->pic_fields.bits.mcomp_filter_type = h->h.filtermode ^ (h->h.filtermode <= 1);
+    pp->pic_fields.bits.frame_parallel_decoding_mode = h->h.parallelmode;
+    pp->pic_fields.bits.reset_frame_context = h->h.resetctx;
+    pp->pic_fields.bits.refresh_frame_context = h->h.refreshctx;
+    pp->pic_fields.bits.frame_context_idx = h->h.framectxid;
+
+    pp->pic_fields.bits.segmentation_enabled = h->h.segmentation.enabled;
+    pp->pic_fields.bits.segmentation_temporal_update = h->h.segmentation.temporal;
+    pp->pic_fields.bits.segmentation_update_map = h->h.segmentation.update_map;
+
+    pp->pic_fields.bits.last_ref_frame = h->h.refidx[0];
+    pp->pic_fields.bits.last_ref_frame_sign_bias = h->h.signbias[0];
+    pp->pic_fields.bits.golden_ref_frame = h->h.refidx[1];
+    pp->pic_fields.bits.golden_ref_frame_sign_bias = h->h.signbias[1];
+    pp->pic_fields.bits.alt_ref_frame = h->h.refidx[2];
+    pp->pic_fields.bits.alt_ref_frame_sign_bias = h->h.signbias[2];
+    pp->pic_fields.bits.lossless_flag = h->h.lossless;
+
+    for (i = 0; i < 7; i++)
+        pp->mb_segment_tree_probs[i] = h->h.segmentation.prob[i];
+
+    if (h->h.segmentation.temporal) {
+        for (i = 0; i < 3; i++)
+            pp->segment_pred_probs[i] = h->h.segmentation.pred_prob[i];
+    } else {
+        memset(pp->segment_pred_probs, 255, sizeof(pp->segment_pred_probs));
+    }
+
+    for (i = 0; i < 8; i++) {
+        if (h->refs[i].f->buf[0]) {
+            pp->reference_frames[i] = ff_vaapi_get_surface_id(h->refs[i].f);
+        } else {
+            pp->reference_frames[i] = VA_INVALID_ID;
+        }
+    }
+}
+
+static int vaapi_vp9_start_frame(AVCodecContext          *avctx,
+                                 av_unused const uint8_t *buffer,
+                                 av_unused uint32_t       size)
+{
+    const VP9SharedContext *h = avctx->priv_data;
+    FFVAContext * const vactx = ff_vaapi_get_context(avctx);
+    VADecPictureParameterBufferVP9 *pic_param;
+
+    vactx->slice_param_size = sizeof(VASliceParameterBufferVP9);
+
+    pic_param = ff_vaapi_alloc_pic_param(vactx, sizeof(VADecPictureParameterBufferVP9));
+    if (!pic_param)
+        return -1;
+    fill_picture_parameters(avctx, h, pic_param);
+
+    return 0;
+}
+
+static int vaapi_vp9_end_frame(AVCodecContext *avctx)
+{
+    FFVAContext * const vactx = ff_vaapi_get_context(avctx);
+    const VP9SharedContext *h = avctx->priv_data;
+    int ret;
+
+    ret = ff_vaapi_commit_slices(vactx);
+    if (ret < 0)
+        goto finish;
+
+    ret = ff_vaapi_render_picture(vactx, ff_vaapi_get_surface_id(h->frames[CUR_FRAME].tf.f));
+    if (ret < 0)
+        goto finish;
+
+finish:
+    ff_vaapi_common_end_frame(avctx);
+    return ret;
+}
+
+static int vaapi_vp9_decode_slice(AVCodecContext *avctx,
+                                  const uint8_t  *buffer,
+                                  uint32_t        size)
+{
+    FFVAContext * const vactx = ff_vaapi_get_context(avctx);
+    const VP9SharedContext *h = avctx->priv_data;
+    VASliceParameterBufferVP9 *slice_param;
+    int i;
+
+    slice_param = (VASliceParameterBufferVP9*)ff_vaapi_alloc_slice(vactx, buffer, size);
+    if (!slice_param)
+        return -1;
+
+    for (i = 0; i < 8; i++) {
+        slice_param->seg_param[i].segment_flags.fields.segment_reference_enabled = h->h.segmentation.feat[i].ref_enabled;
+        slice_param->seg_param[i].segment_flags.fields.segment_reference = h->h.segmentation.feat[i].ref_val;
+        slice_param->seg_param[i].segment_flags.fields.segment_reference_skipped = h->h.segmentation.feat[i].skip_enabled;
+
+        memcpy(slice_param->seg_param[i].filter_level, h->h.segmentation.feat[i].lflvl, sizeof(slice_param->seg_param[i].filter_level));
+
+        slice_param->seg_param[i].luma_dc_quant_scale = h->h.segmentation.feat[i].qmul[0][0];
+        slice_param->seg_param[i].luma_ac_quant_scale = h->h.segmentation.feat[i].qmul[0][1];
+        slice_param->seg_param[i].chroma_dc_quant_scale = h->h.segmentation.feat[i].qmul[1][0];
+        slice_param->seg_param[i].chroma_ac_quant_scale = h->h.segmentation.feat[i].qmul[1][1];
+    }
+
+    return 0;
+}
+
+AVHWAccel ff_vp9_vaapi_hwaccel = {
+    .name                 = "vp9_vaapi",
+    .type                 = AVMEDIA_TYPE_VIDEO,
+    .id                   = AV_CODEC_ID_VP9,
+    .pix_fmt              = AV_PIX_FMT_VAAPI,
+    .start_frame          = vaapi_vp9_start_frame,
+    .end_frame            = vaapi_vp9_end_frame,
+    .decode_slice         = vaapi_vp9_decode_slice,
+    .init                 = ff_vaapi_context_init,
+    .uninit               = ff_vaapi_context_fini,
+    .priv_data_size       = sizeof(FFVAContext),
+};
diff --git a/libavcodec/version.h b/libavcodec/version.h
index b875c59..b17b794 100644
--- a/libavcodec/version.h
+++ b/libavcodec/version.h
@@ -29,7 +29,7 @@
 #include "libavutil/version.h"
 
 #define LIBAVCODEC_VERSION_MAJOR  57
-#define LIBAVCODEC_VERSION_MINOR  19
+#define LIBAVCODEC_VERSION_MINOR  20
 #define LIBAVCODEC_VERSION_MICRO 100
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
diff --git a/libavcodec/vp9.c b/libavcodec/vp9.c
index fdcb895..d5bdbc7 100644
--- a/libavcodec/vp9.c
+++ b/libavcodec/vp9.c
@@ -240,7 +240,7 @@ fail:
 
 static int update_size(AVCodecContext *ctx, int w, int h)
 {
-#define HWACCEL_MAX (CONFIG_VP9_DXVA2_HWACCEL + CONFIG_VP9_D3D11VA_HWACCEL)
+#define HWACCEL_MAX (CONFIG_VP9_DXVA2_HWACCEL + CONFIG_VP9_D3D11VA_HWACCEL + CONFIG_VP9_VAAPI_HWACCEL)
     enum AVPixelFormat pix_fmts[HWACCEL_MAX + 2], *fmtp = pix_fmts;
     VP9Context *s = ctx->priv_data;
     uint8_t *p;
@@ -261,6 +261,9 @@ static int update_size(AVCodecContext *ctx, int w, int h)
 #if CONFIG_VP9_D3D11VA_HWACCEL
         *fmtp++ = AV_PIX_FMT_D3D11VA_VLD;
 #endif
+#if CONFIG_VP9_VAAPI_HWACCEL
+        *fmtp++ = AV_PIX_FMT_VAAPI;
+#endif
     }
 
     *fmtp++ = s->pix_fmt;