1/* 2 * MPEG-4 Part 10 / AVC / H.264 HW decode acceleration through VDPAU 3 * 4 * Copyright (c) 2008 NVIDIA 5 * Copyright (c) 2013 R��mi Denis-Courmont 6 * 7 * This file is part of FFmpeg. 8 * 9 * FFmpeg is free software; you can redistribute it and/or 10 * modify it under the terms of the GNU Lesser General Public 11 * License as published by the Free Software Foundation; either 12 * version 2.1 of the License, or (at your option) any later version. 13 * 14 * FFmpeg is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 17 * Lesser General Public License for more details. 18 * 19 * You should have received a copy of the GNU Lesser General Public 20 * License along with FFmpeg; if not, write to the Free Software Foundation, 21 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 22 */ 23 24#include <vdpau/vdpau.h> 25 26#include "avcodec.h" 27#include "h264.h" 28#include "mpegutils.h" 29#include "vdpau.h" 30#include "vdpau_internal.h" 31 32static int32_t h264_foc(int foc) 33{ 34 if (foc == INT_MAX) 35 foc = 0; 36 return foc; 37} 38 39static void vdpau_h264_clear_rf(VdpReferenceFrameH264 *rf) 40{ 41 rf->surface = VDP_INVALID_HANDLE; 42 rf->is_long_term = VDP_FALSE; 43 rf->top_is_reference = VDP_FALSE; 44 rf->bottom_is_reference = VDP_FALSE; 45 rf->field_order_cnt[0] = 0; 46 rf->field_order_cnt[1] = 0; 47 rf->frame_idx = 0; 48} 49 50static void vdpau_h264_set_rf(VdpReferenceFrameH264 *rf, H264Picture *pic, 51 int pic_structure) 52{ 53 VdpVideoSurface surface = ff_vdpau_get_surface_id(&pic->f); 54 55 if (pic_structure == 0) 56 pic_structure = pic->reference; 57 58 rf->surface = surface; 59 rf->is_long_term = pic->reference && pic->long_ref; 60 rf->top_is_reference = (pic_structure & PICT_TOP_FIELD) != 0; 61 rf->bottom_is_reference = (pic_structure & PICT_BOTTOM_FIELD) != 0; 62 rf->field_order_cnt[0] = h264_foc(pic->field_poc[0]); 63 rf->field_order_cnt[1] = h264_foc(pic->field_poc[1]); 64 rf->frame_idx = pic->long_ref ? pic->pic_id : pic->frame_num; 65} 66 67static void vdpau_h264_set_reference_frames(AVCodecContext *avctx) 68{ 69 H264Context * const h = avctx->priv_data; 70 struct vdpau_picture_context *pic_ctx = h->cur_pic_ptr->hwaccel_picture_private; 71 VdpPictureInfoH264 *info = &pic_ctx->info.h264; 72 int list; 73 74 VdpReferenceFrameH264 *rf = &info->referenceFrames[0]; 75#define H264_RF_COUNT FF_ARRAY_ELEMS(info->referenceFrames) 76 77 for (list = 0; list < 2; ++list) { 78 H264Picture **lp = list ? h->long_ref : h->short_ref; 79 int i, ls = list ? 16 : h->short_ref_count; 80 81 for (i = 0; i < ls; ++i) { 82 H264Picture *pic = lp[i]; 83 VdpReferenceFrameH264 *rf2; 84 VdpVideoSurface surface_ref; 85 int pic_frame_idx; 86 87 if (!pic || !pic->reference) 88 continue; 89 pic_frame_idx = pic->long_ref ? pic->pic_id : pic->frame_num; 90 surface_ref = ff_vdpau_get_surface_id(&pic->f); 91 92 rf2 = &info->referenceFrames[0]; 93 while (rf2 != rf) { 94 if ((rf2->surface == surface_ref) && 95 (rf2->is_long_term == pic->long_ref) && 96 (rf2->frame_idx == pic_frame_idx)) 97 break; 98 ++rf2; 99 } 100 if (rf2 != rf) { 101 rf2->top_is_reference |= (pic->reference & PICT_TOP_FIELD) ? VDP_TRUE : VDP_FALSE; 102 rf2->bottom_is_reference |= (pic->reference & PICT_BOTTOM_FIELD) ? VDP_TRUE : VDP_FALSE; 103 continue; 104 } 105 106 if (rf >= &info->referenceFrames[H264_RF_COUNT]) 107 continue; 108 109 vdpau_h264_set_rf(rf, pic, pic->reference); 110 ++rf; 111 } 112 } 113 114 for (; rf < &info->referenceFrames[H264_RF_COUNT]; ++rf) 115 vdpau_h264_clear_rf(rf); 116} 117 118static int vdpau_h264_start_frame(AVCodecContext *avctx, 119 const uint8_t *buffer, uint32_t size) 120{ 121 H264Context * const h = avctx->priv_data; 122 H264Picture *pic = h->cur_pic_ptr; 123 struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private; 124 VdpPictureInfoH264 *info = &pic_ctx->info.h264; 125 126 /* init VdpPictureInfoH264 */ 127 info->slice_count = 0; 128 info->field_order_cnt[0] = h264_foc(pic->field_poc[0]); 129 info->field_order_cnt[1] = h264_foc(pic->field_poc[1]); 130 info->is_reference = h->nal_ref_idc != 0; 131 info->frame_num = h->frame_num; 132 info->field_pic_flag = h->picture_structure != PICT_FRAME; 133 info->bottom_field_flag = h->picture_structure == PICT_BOTTOM_FIELD; 134 info->num_ref_frames = h->sps.ref_frame_count; 135 info->mb_adaptive_frame_field_flag = h->sps.mb_aff && !info->field_pic_flag; 136 info->constrained_intra_pred_flag = h->pps.constrained_intra_pred; 137 info->weighted_pred_flag = h->pps.weighted_pred; 138 info->weighted_bipred_idc = h->pps.weighted_bipred_idc; 139 info->frame_mbs_only_flag = h->sps.frame_mbs_only_flag; 140 info->transform_8x8_mode_flag = h->pps.transform_8x8_mode; 141 info->chroma_qp_index_offset = h->pps.chroma_qp_index_offset[0]; 142 info->second_chroma_qp_index_offset = h->pps.chroma_qp_index_offset[1]; 143 info->pic_init_qp_minus26 = h->pps.init_qp - 26; 144 info->num_ref_idx_l0_active_minus1 = h->pps.ref_count[0] - 1; 145 info->num_ref_idx_l1_active_minus1 = h->pps.ref_count[1] - 1; 146 info->log2_max_frame_num_minus4 = h->sps.log2_max_frame_num - 4; 147 info->pic_order_cnt_type = h->sps.poc_type; 148 info->log2_max_pic_order_cnt_lsb_minus4 = h->sps.poc_type ? 0 : h->sps.log2_max_poc_lsb - 4; 149 info->delta_pic_order_always_zero_flag = h->sps.delta_pic_order_always_zero_flag; 150 info->direct_8x8_inference_flag = h->sps.direct_8x8_inference_flag; 151 info->entropy_coding_mode_flag = h->pps.cabac; 152 info->pic_order_present_flag = h->pps.pic_order_present; 153 info->deblocking_filter_control_present_flag = h->pps.deblocking_filter_parameters_present; 154 info->redundant_pic_cnt_present_flag = h->pps.redundant_pic_cnt_present; 155 156 memcpy(info->scaling_lists_4x4, h->pps.scaling_matrix4, 157 sizeof(info->scaling_lists_4x4)); 158 memcpy(info->scaling_lists_8x8[0], h->pps.scaling_matrix8[0], 159 sizeof(info->scaling_lists_8x8[0])); 160 memcpy(info->scaling_lists_8x8[1], h->pps.scaling_matrix8[3], 161 sizeof(info->scaling_lists_8x8[1])); 162 163 vdpau_h264_set_reference_frames(avctx); 164 165 return ff_vdpau_common_start_frame(pic_ctx, buffer, size); 166} 167 168static const uint8_t start_code_prefix[3] = { 0x00, 0x00, 0x01 }; 169 170static int vdpau_h264_decode_slice(AVCodecContext *avctx, 171 const uint8_t *buffer, uint32_t size) 172{ 173 H264Context *h = avctx->priv_data; 174 H264Picture *pic = h->cur_pic_ptr; 175 struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private; 176 int val; 177 178 val = ff_vdpau_add_buffer(pic_ctx, start_code_prefix, 3); 179 if (val) 180 return val; 181 182 val = ff_vdpau_add_buffer(pic_ctx, buffer, size); 183 if (val) 184 return val; 185 186 pic_ctx->info.h264.slice_count++; 187 return 0; 188} 189 190static int vdpau_h264_end_frame(AVCodecContext *avctx) 191{ 192 int res = 0; 193 AVVDPAUContext *hwctx = avctx->hwaccel_context; 194 H264Context *h = avctx->priv_data; 195 H264Picture *pic = h->cur_pic_ptr; 196 struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private; 197 VdpVideoSurface surf = ff_vdpau_get_surface_id(&pic->f); 198 199#if FF_API_BUFS_VDPAU 200FF_DISABLE_DEPRECATION_WARNINGS 201 hwctx->info = pic_ctx->info; 202 hwctx->bitstream_buffers = pic_ctx->bitstream_buffers; 203 hwctx->bitstream_buffers_used = pic_ctx->bitstream_buffers_used; 204 hwctx->bitstream_buffers_allocated = pic_ctx->bitstream_buffers_allocated; 205FF_ENABLE_DEPRECATION_WARNINGS 206#endif 207 208 if (!hwctx->render) { 209 res = hwctx->render2(avctx, &pic->f, (void *)&pic_ctx->info, 210 pic_ctx->bitstream_buffers_used, pic_ctx->bitstream_buffers); 211 } else 212 hwctx->render(hwctx->decoder, surf, (void *)&pic_ctx->info, 213 pic_ctx->bitstream_buffers_used, pic_ctx->bitstream_buffers); 214 215 ff_h264_draw_horiz_band(h, 0, h->avctx->height); 216 av_freep(&pic_ctx->bitstream_buffers); 217 218#if FF_API_BUFS_VDPAU 219FF_DISABLE_DEPRECATION_WARNINGS 220 hwctx->bitstream_buffers = NULL; 221 hwctx->bitstream_buffers_used = 0; 222 hwctx->bitstream_buffers_allocated = 0; 223FF_ENABLE_DEPRECATION_WARNINGS 224#endif 225 226 return res; 227} 228 229AVHWAccel ff_h264_vdpau_hwaccel = { 230 .name = "h264_vdpau", 231 .type = AVMEDIA_TYPE_VIDEO, 232 .id = AV_CODEC_ID_H264, 233 .pix_fmt = AV_PIX_FMT_VDPAU, 234 .start_frame = vdpau_h264_start_frame, 235 .end_frame = vdpau_h264_end_frame, 236 .decode_slice = vdpau_h264_decode_slice, 237 .frame_priv_data_size = sizeof(struct vdpau_picture_context), 238}; 239