libavcodec/vaapi_vp8.c - third_party/ffmpeg - Git at Google

 /*
  * 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 <va/va.h>
 #include <va/va_dec_vp8.h>

 #include "hwaccel.h"
 #include "vaapi_decode.h"
 #include "vp8.h"

 static VASurfaceID vaapi_vp8_surface_id(VP8Frame *vf)
 {
     if (vf)
         return ff_vaapi_get_surface_id(vf->tf.f);
     else
         return VA_INVALID_SURFACE;
 }

 static int vaapi_vp8_start_frame(AVCodecContext          *avctx,
                                  av_unused const uint8_t *buffer,
                                  av_unused uint32_t       size)
 {
     const VP8Context *s = avctx->priv_data;
     VAAPIDecodePicture *pic = s->framep[VP56_FRAME_CURRENT]->hwaccel_picture_private;
     VAPictureParameterBufferVP8 pp;
     VAProbabilityDataBufferVP8 prob;
     VAIQMatrixBufferVP8 quant;
     int err, i, j, k;

     pic->output_surface = vaapi_vp8_surface_id(s->framep[VP56_FRAME_CURRENT]);

     pp = (VAPictureParameterBufferVP8) {
         .frame_width                     = avctx->width,
         .frame_height                    = avctx->height,

         .last_ref_frame                  = vaapi_vp8_surface_id(s->framep[VP56_FRAME_PREVIOUS]),
         .golden_ref_frame                = vaapi_vp8_surface_id(s->framep[VP56_FRAME_GOLDEN]),
         .alt_ref_frame                   = vaapi_vp8_surface_id(s->framep[VP56_FRAME_GOLDEN2]),
         .out_of_loop_frame               = VA_INVALID_SURFACE,

         .pic_fields.bits = {
             .key_frame                   = !s->keyframe,
             .version                     = s->profile,

             .segmentation_enabled        = s->segmentation.enabled,
             .update_mb_segmentation_map  = s->segmentation.update_map,
             .update_segment_feature_data = s->segmentation.update_feature_data,

             .filter_type                 = s->filter.simple,
             .sharpness_level             = s->filter.sharpness,

             .loop_filter_adj_enable      = s->lf_delta.enabled,
             .mode_ref_lf_delta_update    = s->lf_delta.update,

             .sign_bias_golden            = s->sign_bias[VP56_FRAME_GOLDEN],
             .sign_bias_alternate         = s->sign_bias[VP56_FRAME_GOLDEN2],

             .mb_no_coeff_skip            = s->mbskip_enabled,
             .loop_filter_disable         = s->filter.level == 0,
         },

         .prob_skip_false                 = s->prob->mbskip,
         .prob_intra                      = s->prob->intra,
         .prob_last                       = s->prob->last,
         .prob_gf                         = s->prob->golden,
     };

     for (i = 0; i < 3; i++)
         pp.mb_segment_tree_probs[i] = s->prob->segmentid[i];

     for (i = 0; i < 4; i++) {
         if (s->segmentation.enabled) {
             pp.loop_filter_level[i] = s->segmentation.filter_level[i];
             if (!s->segmentation.absolute_vals)
                 pp.loop_filter_level[i] += s->filter.level;
         } else {
             pp.loop_filter_level[i] = s->filter.level;
         }
         pp.loop_filter_level[i] = av_clip_uintp2(pp.loop_filter_level[i], 6);
     }

     for (i = 0; i < 4; i++) {
         pp.loop_filter_deltas_ref_frame[i] = s->lf_delta.ref[i];
         pp.loop_filter_deltas_mode[i] = s->lf_delta.mode[i + 4];
     }

     if (s->keyframe) {
         static const uint8_t keyframe_y_mode_probs[4] = {
             145, 156, 163, 128
         };
         static const uint8_t keyframe_uv_mode_probs[3] = {
             142, 114, 183
         };
         memcpy(pp.y_mode_probs,  keyframe_y_mode_probs,  4);
         memcpy(pp.uv_mode_probs, keyframe_uv_mode_probs, 3);
     } else {
         for (i = 0; i < 4; i++)
             pp.y_mode_probs[i] = s->prob->pred16x16[i];
         for (i = 0; i < 3; i++)
             pp.uv_mode_probs[i] = s->prob->pred8x8c[i];
     }
     for (i = 0; i < 2; i++)
         for (j = 0; j < 19; j++)
             pp.mv_probs[i][j] = s->prob->mvc[i][j];

     pp.bool_coder_ctx.range = s->coder_state_at_header_end.range;
     pp.bool_coder_ctx.value = s->coder_state_at_header_end.value;
     pp.bool_coder_ctx.count = s->coder_state_at_header_end.bit_count;

     err = ff_vaapi_decode_make_param_buffer(avctx, pic,
                                             VAPictureParameterBufferType,
                                             &pp, sizeof(pp));
     if (err < 0)
         goto fail;

     for (i = 0; i < 4; i++) {
         for (j = 0; j < 8; j++) {
             static const int coeff_bands_inverse[8] = {
                 0, 1, 2, 3, 5, 6, 4, 15
             };
             int coeff_pos = coeff_bands_inverse[j];

             for (k = 0; k < 3; k++) {
                 memcpy(prob.dct_coeff_probs[i][j][k],
                        s->prob->token[i][coeff_pos][k], 11);
             }
         }
     }

     err = ff_vaapi_decode_make_param_buffer(avctx, pic,
                                             VAProbabilityBufferType,
                                             &prob, sizeof(prob));
     if (err < 0)
         goto fail;

     for (i = 0; i < 4; i++) {
         int base_qi = s->segmentation.base_quant[i];
         if (!s->segmentation.absolute_vals)
             base_qi += s->quant.yac_qi;

         quant.quantization_index[i][0] = av_clip_uintp2(base_qi,                       7);
         quant.quantization_index[i][1] = av_clip_uintp2(base_qi + s->quant.ydc_delta,  7);
         quant.quantization_index[i][2] = av_clip_uintp2(base_qi + s->quant.y2dc_delta, 7);
         quant.quantization_index[i][3] = av_clip_uintp2(base_qi + s->quant.y2ac_delta, 7);
         quant.quantization_index[i][4] = av_clip_uintp2(base_qi + s->quant.uvdc_delta, 7);
         quant.quantization_index[i][5] = av_clip_uintp2(base_qi + s->quant.uvac_delta, 7);
     }

     err = ff_vaapi_decode_make_param_buffer(avctx, pic,
                                             VAIQMatrixBufferType,
                                             &quant, sizeof(quant));
     if (err < 0)
         goto fail;

     return 0;

 fail:
     ff_vaapi_decode_cancel(avctx, pic);
     return err;
 }

 static int vaapi_vp8_end_frame(AVCodecContext *avctx)
 {
     const VP8Context *s = avctx->priv_data;
     VAAPIDecodePicture *pic = s->framep[VP56_FRAME_CURRENT]->hwaccel_picture_private;

     return ff_vaapi_decode_issue(avctx, pic);
 }

 static int vaapi_vp8_decode_slice(AVCodecContext *avctx,
                                   const uint8_t  *buffer,
                                   uint32_t        size)
 {
     const VP8Context *s = avctx->priv_data;
     VAAPIDecodePicture *pic = s->framep[VP56_FRAME_CURRENT]->hwaccel_picture_private;
     VASliceParameterBufferVP8 sp;
     int err, i;

     unsigned int header_size = 3 + 7 * s->keyframe;
     const uint8_t *data = buffer + header_size;
     unsigned int data_size = size - header_size;

     sp = (VASliceParameterBufferVP8) {
         .slice_data_size   = data_size,
         .slice_data_offset = 0,
         .slice_data_flag   = VA_SLICE_DATA_FLAG_ALL,

         .macroblock_offset = (8 * (s->coder_state_at_header_end.input - data) -
                               s->coder_state_at_header_end.bit_count - 8),
         .num_of_partitions = s->num_coeff_partitions + 1,
     };

     sp.partition_size[0] = s->header_partition_size - ((sp.macroblock_offset + 7) / 8);
     for (i = 0; i < 8; i++)
         sp.partition_size[i+1] = s->coeff_partition_size[i];

     err = ff_vaapi_decode_make_slice_buffer(avctx, pic, &sp, sizeof(sp), data, data_size);
     if (err)
         goto fail;

     return 0;

 fail:
     ff_vaapi_decode_cancel(avctx, pic);
     return err;
 }

 const AVHWAccel ff_vp8_vaapi_hwaccel = {
     .name                 = "vp8_vaapi",
     .type                 = AVMEDIA_TYPE_VIDEO,
     .id                   = AV_CODEC_ID_VP8,
     .pix_fmt              = AV_PIX_FMT_VAAPI,
     .start_frame          = &vaapi_vp8_start_frame,
     .end_frame            = &vaapi_vp8_end_frame,
     .decode_slice         = &vaapi_vp8_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,
 };
	/*
	* 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 <va/va.h>
	#include <va/va_dec_vp8.h>

	#include "hwaccel.h"
	#include "vaapi_decode.h"
	#include "vp8.h"

	static VASurfaceID vaapi_vp8_surface_id(VP8Frame *vf)
	{
	if (vf)
	return ff_vaapi_get_surface_id(vf->tf.f);
	else
	return VA_INVALID_SURFACE;
	}

	static int vaapi_vp8_start_frame(AVCodecContext *avctx,
	av_unused const uint8_t *buffer,
	av_unused uint32_t size)
	{
	const VP8Context *s = avctx->priv_data;
	VAAPIDecodePicture *pic = s->framep[VP56_FRAME_CURRENT]->hwaccel_picture_private;
	VAPictureParameterBufferVP8 pp;
	VAProbabilityDataBufferVP8 prob;
	VAIQMatrixBufferVP8 quant;
	int err, i, j, k;

	pic->output_surface = vaapi_vp8_surface_id(s->framep[VP56_FRAME_CURRENT]);

	pp = (VAPictureParameterBufferVP8) {
	.frame_width = avctx->width,
	.frame_height = avctx->height,

	.last_ref_frame = vaapi_vp8_surface_id(s->framep[VP56_FRAME_PREVIOUS]),
	.golden_ref_frame = vaapi_vp8_surface_id(s->framep[VP56_FRAME_GOLDEN]),
	.alt_ref_frame = vaapi_vp8_surface_id(s->framep[VP56_FRAME_GOLDEN2]),
	.out_of_loop_frame = VA_INVALID_SURFACE,

	.pic_fields.bits = {
	.key_frame = !s->keyframe,
	.version = s->profile,

	.segmentation_enabled = s->segmentation.enabled,
	.update_mb_segmentation_map = s->segmentation.update_map,
	.update_segment_feature_data = s->segmentation.update_feature_data,

	.filter_type = s->filter.simple,
	.sharpness_level = s->filter.sharpness,

	.loop_filter_adj_enable = s->lf_delta.enabled,
	.mode_ref_lf_delta_update = s->lf_delta.update,

	.sign_bias_golden = s->sign_bias[VP56_FRAME_GOLDEN],
	.sign_bias_alternate = s->sign_bias[VP56_FRAME_GOLDEN2],

	.mb_no_coeff_skip = s->mbskip_enabled,
	.loop_filter_disable = s->filter.level == 0,
	},

	.prob_skip_false = s->prob->mbskip,
	.prob_intra = s->prob->intra,
	.prob_last = s->prob->last,
	.prob_gf = s->prob->golden,
	};

	for (i = 0; i < 3; i++)
	pp.mb_segment_tree_probs[i] = s->prob->segmentid[i];

	for (i = 0; i < 4; i++) {
	if (s->segmentation.enabled) {
	pp.loop_filter_level[i] = s->segmentation.filter_level[i];
	if (!s->segmentation.absolute_vals)
	pp.loop_filter_level[i] += s->filter.level;
	} else {
	pp.loop_filter_level[i] = s->filter.level;
	}
	pp.loop_filter_level[i] = av_clip_uintp2(pp.loop_filter_level[i], 6);
	}

	for (i = 0; i < 4; i++) {
	pp.loop_filter_deltas_ref_frame[i] = s->lf_delta.ref[i];
	pp.loop_filter_deltas_mode[i] = s->lf_delta.mode[i + 4];
	}

	if (s->keyframe) {
	static const uint8_t keyframe_y_mode_probs[4] = {
	145, 156, 163, 128
	};
	static const uint8_t keyframe_uv_mode_probs[3] = {
	142, 114, 183
	};
	memcpy(pp.y_mode_probs, keyframe_y_mode_probs, 4);
	memcpy(pp.uv_mode_probs, keyframe_uv_mode_probs, 3);
	} else {
	for (i = 0; i < 4; i++)
	pp.y_mode_probs[i] = s->prob->pred16x16[i];
	for (i = 0; i < 3; i++)
	pp.uv_mode_probs[i] = s->prob->pred8x8c[i];
	}
	for (i = 0; i < 2; i++)
	for (j = 0; j < 19; j++)
	pp.mv_probs[i][j] = s->prob->mvc[i][j];

	pp.bool_coder_ctx.range = s->coder_state_at_header_end.range;
	pp.bool_coder_ctx.value = s->coder_state_at_header_end.value;
	pp.bool_coder_ctx.count = s->coder_state_at_header_end.bit_count;

	err = ff_vaapi_decode_make_param_buffer(avctx, pic,
	VAPictureParameterBufferType,
	&pp, sizeof(pp));
	if (err < 0)
	goto fail;

	for (i = 0; i < 4; i++) {
	for (j = 0; j < 8; j++) {
	static const int coeff_bands_inverse[8] = {
	0, 1, 2, 3, 5, 6, 4, 15
	};
	int coeff_pos = coeff_bands_inverse[j];

	for (k = 0; k < 3; k++) {
	memcpy(prob.dct_coeff_probs[i][j][k],
	s->prob->token[i][coeff_pos][k], 11);
	}
	}
	}

	err = ff_vaapi_decode_make_param_buffer(avctx, pic,
	VAProbabilityBufferType,
	&prob, sizeof(prob));
	if (err < 0)
	goto fail;

	for (i = 0; i < 4; i++) {
	int base_qi = s->segmentation.base_quant[i];
	if (!s->segmentation.absolute_vals)
	base_qi += s->quant.yac_qi;

	quant.quantization_index[i][0] = av_clip_uintp2(base_qi, 7);
	quant.quantization_index[i][1] = av_clip_uintp2(base_qi + s->quant.ydc_delta, 7);
	quant.quantization_index[i][2] = av_clip_uintp2(base_qi + s->quant.y2dc_delta, 7);
	quant.quantization_index[i][3] = av_clip_uintp2(base_qi + s->quant.y2ac_delta, 7);
	quant.quantization_index[i][4] = av_clip_uintp2(base_qi + s->quant.uvdc_delta, 7);
	quant.quantization_index[i][5] = av_clip_uintp2(base_qi + s->quant.uvac_delta, 7);
	}

	err = ff_vaapi_decode_make_param_buffer(avctx, pic,
	VAIQMatrixBufferType,
	&quant, sizeof(quant));
	if (err < 0)
	goto fail;

	return 0;

	fail:
	ff_vaapi_decode_cancel(avctx, pic);
	return err;
	}

	static int vaapi_vp8_end_frame(AVCodecContext *avctx)
	{
	const VP8Context *s = avctx->priv_data;
	VAAPIDecodePicture *pic = s->framep[VP56_FRAME_CURRENT]->hwaccel_picture_private;

	return ff_vaapi_decode_issue(avctx, pic);
	}

	static int vaapi_vp8_decode_slice(AVCodecContext *avctx,
	const uint8_t *buffer,
	uint32_t size)
	{
	const VP8Context *s = avctx->priv_data;
	VAAPIDecodePicture *pic = s->framep[VP56_FRAME_CURRENT]->hwaccel_picture_private;
	VASliceParameterBufferVP8 sp;
	int err, i;

	unsigned int header_size = 3 + 7 * s->keyframe;
	const uint8_t *data = buffer + header_size;
	unsigned int data_size = size - header_size;

	sp = (VASliceParameterBufferVP8) {
	.slice_data_size = data_size,
	.slice_data_offset = 0,
	.slice_data_flag = VA_SLICE_DATA_FLAG_ALL,

	.macroblock_offset = (8 * (s->coder_state_at_header_end.input - data) -
	s->coder_state_at_header_end.bit_count - 8),
	.num_of_partitions = s->num_coeff_partitions + 1,
	};

	sp.partition_size[0] = s->header_partition_size - ((sp.macroblock_offset + 7) / 8);
	for (i = 0; i < 8; i++)
	sp.partition_size[i+1] = s->coeff_partition_size[i];

	err = ff_vaapi_decode_make_slice_buffer(avctx, pic, &sp, sizeof(sp), data, data_size);
	if (err)
	goto fail;

	return 0;

	fail:
	ff_vaapi_decode_cancel(avctx, pic);
	return err;
	}

	const AVHWAccel ff_vp8_vaapi_hwaccel = {
	.name = "vp8_vaapi",
	.type = AVMEDIA_TYPE_VIDEO,
	.id = AV_CODEC_ID_VP8,
	.pix_fmt = AV_PIX_FMT_VAAPI,
	.start_frame = &vaapi_vp8_start_frame,
	.end_frame = &vaapi_vp8_end_frame,
	.decode_slice = &vaapi_vp8_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,
	};