| 1 | /* |
| 2 | * MPEG-4 Part 10 / AVC / H.264 HW decode acceleration through VDPAU |
| 3 | * |
| 4 | * Copyright (c) 2008 NVIDIA |
| 5 | * Copyright (c) 2013 RĂ©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 | |
| 32 | static int32_t h264_foc(int foc) |
| 33 | { |
| 34 | if (foc == INT_MAX) |
| 35 | foc = 0; |
| 36 | return foc; |
| 37 | } |
| 38 | |
| 39 | static 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 | |
| 50 | static 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 | |
| 67 | static 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 | |
| 118 | static 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 | |
| 168 | static const uint8_t start_code_prefix[3] = { 0x00, 0x00, 0x01 }; |
| 169 | |
| 170 | static 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 | |
| 190 | static 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 |
| 200 | FF_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; |
| 205 | FF_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 |
| 219 | FF_DISABLE_DEPRECATION_WARNINGS |
| 220 | hwctx->bitstream_buffers = NULL; |
| 221 | hwctx->bitstream_buffers_used = 0; |
| 222 | hwctx->bitstream_buffers_allocated = 0; |
| 223 | FF_ENABLE_DEPRECATION_WARNINGS |
| 224 | #endif |
| 225 | |
| 226 | return res; |
| 227 | } |
| 228 | |
| 229 | AVHWAccel 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 | }; |