forked from KolibriOS/kolibrios
221 lines
8.6 KiB
C
221 lines
8.6 KiB
C
/*
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* MPEG-4 Part 10 / AVC / H.264 HW decode acceleration through VDPAU
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*
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* Copyright (c) 2008 NVIDIA
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* Copyright (c) 2013 Rémi Denis-Courmont
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <vdpau/vdpau.h>
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#include "avcodec.h"
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#include "h264.h"
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#include "vdpau.h"
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#include "vdpau_internal.h"
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static int32_t h264_foc(int foc)
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{
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if (foc == INT_MAX)
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foc = 0;
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return foc;
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}
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static void vdpau_h264_clear_rf(VdpReferenceFrameH264 *rf)
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{
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rf->surface = VDP_INVALID_HANDLE;
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rf->is_long_term = VDP_FALSE;
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rf->top_is_reference = VDP_FALSE;
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rf->bottom_is_reference = VDP_FALSE;
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rf->field_order_cnt[0] = 0;
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rf->field_order_cnt[1] = 0;
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rf->frame_idx = 0;
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}
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static void vdpau_h264_set_rf(VdpReferenceFrameH264 *rf, Picture *pic,
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int pic_structure)
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{
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VdpVideoSurface surface = ff_vdpau_get_surface_id(pic);
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if (pic_structure == 0)
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pic_structure = pic->reference;
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rf->surface = surface;
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rf->is_long_term = pic->reference && pic->long_ref;
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rf->top_is_reference = (pic_structure & PICT_TOP_FIELD) != 0;
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rf->bottom_is_reference = (pic_structure & PICT_BOTTOM_FIELD) != 0;
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rf->field_order_cnt[0] = h264_foc(pic->field_poc[0]);
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rf->field_order_cnt[1] = h264_foc(pic->field_poc[1]);
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rf->frame_idx = pic->long_ref ? pic->pic_id : pic->frame_num;
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}
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static void vdpau_h264_set_reference_frames(AVCodecContext *avctx)
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{
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H264Context * const h = avctx->priv_data;
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struct vdpau_picture_context *pic_ctx = h->cur_pic_ptr->hwaccel_picture_private;
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VdpPictureInfoH264 *info = &pic_ctx->info.h264;
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int list;
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VdpReferenceFrameH264 *rf = &info->referenceFrames[0];
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#define H264_RF_COUNT FF_ARRAY_ELEMS(info->referenceFrames)
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for (list = 0; list < 2; ++list) {
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Picture **lp = list ? h->long_ref : h->short_ref;
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int i, ls = list ? 16 : h->short_ref_count;
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for (i = 0; i < ls; ++i) {
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Picture *pic = lp[i];
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VdpReferenceFrameH264 *rf2;
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VdpVideoSurface surface_ref;
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int pic_frame_idx;
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if (!pic || !pic->reference)
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continue;
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pic_frame_idx = pic->long_ref ? pic->pic_id : pic->frame_num;
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surface_ref = ff_vdpau_get_surface_id(pic);
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rf2 = &info->referenceFrames[0];
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while (rf2 != rf) {
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if ((rf2->surface == surface_ref) &&
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(rf2->is_long_term == pic->long_ref) &&
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(rf2->frame_idx == pic_frame_idx))
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break;
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++rf2;
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}
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if (rf2 != rf) {
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rf2->top_is_reference |= (pic->reference & PICT_TOP_FIELD) ? VDP_TRUE : VDP_FALSE;
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rf2->bottom_is_reference |= (pic->reference & PICT_BOTTOM_FIELD) ? VDP_TRUE : VDP_FALSE;
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continue;
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}
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if (rf >= &info->referenceFrames[H264_RF_COUNT])
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continue;
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vdpau_h264_set_rf(rf, pic, pic->reference);
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++rf;
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}
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}
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for (; rf < &info->referenceFrames[H264_RF_COUNT]; ++rf)
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vdpau_h264_clear_rf(rf);
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}
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static int vdpau_h264_start_frame(AVCodecContext *avctx,
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const uint8_t *buffer, uint32_t size)
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{
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H264Context * const h = avctx->priv_data;
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Picture *pic = h->cur_pic_ptr;
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struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;
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VdpPictureInfoH264 *info = &pic_ctx->info.h264;
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/* init VdpPictureInfoH264 */
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info->slice_count = 0;
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info->field_order_cnt[0] = h264_foc(pic->field_poc[0]);
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info->field_order_cnt[1] = h264_foc(pic->field_poc[1]);
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info->is_reference = h->nal_ref_idc != 0;
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info->frame_num = h->frame_num;
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info->field_pic_flag = h->picture_structure != PICT_FRAME;
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info->bottom_field_flag = h->picture_structure == PICT_BOTTOM_FIELD;
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info->num_ref_frames = h->sps.ref_frame_count;
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info->mb_adaptive_frame_field_flag = h->sps.mb_aff && !info->field_pic_flag;
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info->constrained_intra_pred_flag = h->pps.constrained_intra_pred;
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info->weighted_pred_flag = h->pps.weighted_pred;
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info->weighted_bipred_idc = h->pps.weighted_bipred_idc;
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info->frame_mbs_only_flag = h->sps.frame_mbs_only_flag;
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info->transform_8x8_mode_flag = h->pps.transform_8x8_mode;
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info->chroma_qp_index_offset = h->pps.chroma_qp_index_offset[0];
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info->second_chroma_qp_index_offset = h->pps.chroma_qp_index_offset[1];
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info->pic_init_qp_minus26 = h->pps.init_qp - 26;
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info->num_ref_idx_l0_active_minus1 = h->pps.ref_count[0] - 1;
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info->num_ref_idx_l1_active_minus1 = h->pps.ref_count[1] - 1;
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info->log2_max_frame_num_minus4 = h->sps.log2_max_frame_num - 4;
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info->pic_order_cnt_type = h->sps.poc_type;
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info->log2_max_pic_order_cnt_lsb_minus4 = h->sps.poc_type ? 0 : h->sps.log2_max_poc_lsb - 4;
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info->delta_pic_order_always_zero_flag = h->sps.delta_pic_order_always_zero_flag;
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info->direct_8x8_inference_flag = h->sps.direct_8x8_inference_flag;
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info->entropy_coding_mode_flag = h->pps.cabac;
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info->pic_order_present_flag = h->pps.pic_order_present;
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info->deblocking_filter_control_present_flag = h->pps.deblocking_filter_parameters_present;
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info->redundant_pic_cnt_present_flag = h->pps.redundant_pic_cnt_present;
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memcpy(info->scaling_lists_4x4, h->pps.scaling_matrix4,
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sizeof(info->scaling_lists_4x4));
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memcpy(info->scaling_lists_8x8[0], h->pps.scaling_matrix8[0],
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sizeof(info->scaling_lists_8x8[0]));
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memcpy(info->scaling_lists_8x8[1], h->pps.scaling_matrix8[3],
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sizeof(info->scaling_lists_8x8[1]));
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vdpau_h264_set_reference_frames(avctx);
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return ff_vdpau_common_start_frame(pic, buffer, size);
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}
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static const uint8_t start_code_prefix[3] = { 0x00, 0x00, 0x01 };
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static int vdpau_h264_decode_slice(AVCodecContext *avctx,
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const uint8_t *buffer, uint32_t size)
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{
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H264Context *h = avctx->priv_data;
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Picture *pic = h->cur_pic_ptr;
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struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;
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int val;
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val = ff_vdpau_add_buffer(pic, start_code_prefix, 3);
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if (val)
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return val;
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val = ff_vdpau_add_buffer(pic, buffer, size);
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if (val)
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return val;
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pic_ctx->info.h264.slice_count++;
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return 0;
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}
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static int vdpau_h264_end_frame(AVCodecContext *avctx)
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{
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int res = 0;
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AVVDPAUContext *hwctx = avctx->hwaccel_context;
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H264Context *h = avctx->priv_data;
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Picture *pic = h->cur_pic_ptr;
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struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;
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VdpVideoSurface surf = ff_vdpau_get_surface_id(pic);
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if (!hwctx->render) {
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res = hwctx->render2(avctx, &pic->f, (void *)&pic_ctx->info,
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pic_ctx->bitstream_buffers_used, pic_ctx->bitstream_buffers);
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} else
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hwctx->render(hwctx->decoder, surf, (void *)&pic_ctx->info,
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pic_ctx->bitstream_buffers_used, pic_ctx->bitstream_buffers);
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ff_h264_draw_horiz_band(h, 0, h->avctx->height);
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av_freep(&pic_ctx->bitstream_buffers);
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return res;
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}
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AVHWAccel ff_h264_vdpau_hwaccel = {
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.name = "h264_vdpau",
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.type = AVMEDIA_TYPE_VIDEO,
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.id = AV_CODEC_ID_H264,
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.pix_fmt = AV_PIX_FMT_VDPAU,
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.start_frame = vdpau_h264_start_frame,
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.end_frame = vdpau_h264_end_frame,
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.decode_slice = vdpau_h264_decode_slice,
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.priv_data_size = sizeof(struct vdpau_picture_context),
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};
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