| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * MPEG-2 HW decode acceleration through VA API | ||
| 3 | * | ||
| 4 | * Copyright (C) 2008-2009 Splitted-Desktop Systems | ||
| 5 | * | ||
| 6 | * This file is part of FFmpeg. | ||
| 7 | * | ||
| 8 | * FFmpeg is free software; you can redistribute it and/or | ||
| 9 | * modify it under the terms of the GNU Lesser General Public | ||
| 10 | * License as published by the Free Software Foundation; either | ||
| 11 | * version 2.1 of the License, or (at your option) any later version. | ||
| 12 | * | ||
| 13 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 16 | * Lesser General Public License for more details. | ||
| 17 | * | ||
| 18 | * You should have received a copy of the GNU Lesser General Public | ||
| 19 | * License along with FFmpeg; if not, write to the Free Software | ||
| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 21 | */ | ||
| 22 | |||
| 23 | #include "hwaccel_internal.h" | ||
| 24 | #include "mpegutils.h" | ||
| 25 | #include "mpegvideo.h" | ||
| 26 | #include "mpegvideodec.h" | ||
| 27 | #include "vaapi_decode.h" | ||
| 28 | |||
| 29 | /** Reconstruct bitstream f_code */ | ||
| 30 | ✗ | static inline int mpeg2_get_f_code(const MpegEncContext *s) | |
| 31 | { | ||
| 32 | ✗ | return (s->mpeg_f_code[0][0] << 12) | (s->mpeg_f_code[0][1] << 8) | | |
| 33 | ✗ | (s->mpeg_f_code[1][0] << 4) | s->mpeg_f_code[1][1]; | |
| 34 | } | ||
| 35 | |||
| 36 | /** Determine frame start: first field for field picture or frame picture */ | ||
| 37 | ✗ | static inline int mpeg2_get_is_frame_start(const MpegEncContext *s) | |
| 38 | { | ||
| 39 | ✗ | return s->first_field || s->picture_structure == PICT_FRAME; | |
| 40 | } | ||
| 41 | |||
| 42 | ✗ | static int vaapi_mpeg2_start_frame(AVCodecContext *avctx, | |
| 43 | av_unused const AVBufferRef *buffer_ref, | ||
| 44 | av_unused const uint8_t *buffer, | ||
| 45 | av_unused uint32_t size) | ||
| 46 | { | ||
| 47 | ✗ | const MpegEncContext *s = avctx->priv_data; | |
| 48 | ✗ | VAAPIDecodePicture *pic = s->cur_pic.ptr->hwaccel_picture_private; | |
| 49 | VAPictureParameterBufferMPEG2 pic_param; | ||
| 50 | VAIQMatrixBufferMPEG2 iq_matrix; | ||
| 51 | int i, err; | ||
| 52 | |||
| 53 | ✗ | pic->output_surface = ff_vaapi_get_surface_id(s->cur_pic.ptr->f); | |
| 54 | |||
| 55 | ✗ | pic_param = (VAPictureParameterBufferMPEG2) { | |
| 56 | ✗ | .horizontal_size = s->width, | |
| 57 | ✗ | .vertical_size = s->height, | |
| 58 | .forward_reference_picture = VA_INVALID_ID, | ||
| 59 | .backward_reference_picture = VA_INVALID_ID, | ||
| 60 | ✗ | .picture_coding_type = s->pict_type, | |
| 61 | ✗ | .f_code = mpeg2_get_f_code(s), | |
| 62 | .picture_coding_extension.bits = { | ||
| 63 | ✗ | .intra_dc_precision = s->intra_dc_precision, | |
| 64 | ✗ | .picture_structure = s->picture_structure, | |
| 65 | ✗ | .top_field_first = s->top_field_first, | |
| 66 | ✗ | .frame_pred_frame_dct = s->frame_pred_frame_dct, | |
| 67 | ✗ | .concealment_motion_vectors = s->concealment_motion_vectors, | |
| 68 | ✗ | .q_scale_type = s->q_scale_type, | |
| 69 | ✗ | .intra_vlc_format = s->intra_vlc_format, | |
| 70 | ✗ | .alternate_scan = s->alternate_scan, | |
| 71 | ✗ | .repeat_first_field = s->repeat_first_field, | |
| 72 | ✗ | .progressive_frame = s->progressive_frame, | |
| 73 | ✗ | .is_first_field = mpeg2_get_is_frame_start(s), | |
| 74 | }, | ||
| 75 | }; | ||
| 76 | |||
| 77 | ✗ | switch (s->pict_type) { | |
| 78 | ✗ | case AV_PICTURE_TYPE_B: | |
| 79 | ✗ | pic_param.backward_reference_picture = ff_vaapi_get_surface_id(s->next_pic.ptr->f); | |
| 80 | // fall-through | ||
| 81 | ✗ | case AV_PICTURE_TYPE_P: | |
| 82 | ✗ | pic_param.forward_reference_picture = ff_vaapi_get_surface_id(s->last_pic.ptr->f); | |
| 83 | ✗ | break; | |
| 84 | } | ||
| 85 | |||
| 86 | ✗ | err = ff_vaapi_decode_make_param_buffer(avctx, pic, | |
| 87 | VAPictureParameterBufferType, | ||
| 88 | &pic_param, sizeof(pic_param)); | ||
| 89 | ✗ | if (err < 0) | |
| 90 | ✗ | goto fail; | |
| 91 | |||
| 92 | ✗ | iq_matrix.load_intra_quantiser_matrix = 1; | |
| 93 | ✗ | iq_matrix.load_non_intra_quantiser_matrix = 1; | |
| 94 | ✗ | iq_matrix.load_chroma_intra_quantiser_matrix = 1; | |
| 95 | ✗ | iq_matrix.load_chroma_non_intra_quantiser_matrix = 1; | |
| 96 | |||
| 97 | ✗ | for (i = 0; i < 64; i++) { | |
| 98 | ✗ | int n = s->idsp.idct_permutation[ff_zigzag_direct[i]]; | |
| 99 | ✗ | iq_matrix.intra_quantiser_matrix[i] = s->intra_matrix[n]; | |
| 100 | ✗ | iq_matrix.non_intra_quantiser_matrix[i] = s->inter_matrix[n]; | |
| 101 | ✗ | iq_matrix.chroma_intra_quantiser_matrix[i] = s->chroma_intra_matrix[n]; | |
| 102 | ✗ | iq_matrix.chroma_non_intra_quantiser_matrix[i] = s->chroma_inter_matrix[n]; | |
| 103 | } | ||
| 104 | |||
| 105 | ✗ | err = ff_vaapi_decode_make_param_buffer(avctx, pic, | |
| 106 | VAIQMatrixBufferType, | ||
| 107 | &iq_matrix, sizeof(iq_matrix)); | ||
| 108 | ✗ | if (err < 0) | |
| 109 | ✗ | goto fail; | |
| 110 | |||
| 111 | ✗ | return 0; | |
| 112 | |||
| 113 | ✗ | fail: | |
| 114 | ✗ | ff_vaapi_decode_cancel(avctx, pic); | |
| 115 | ✗ | return err; | |
| 116 | } | ||
| 117 | |||
| 118 | ✗ | static int vaapi_mpeg2_end_frame(AVCodecContext *avctx) | |
| 119 | { | ||
| 120 | ✗ | MpegEncContext *s = avctx->priv_data; | |
| 121 | ✗ | VAAPIDecodePicture *pic = s->cur_pic.ptr->hwaccel_picture_private; | |
| 122 | int ret; | ||
| 123 | |||
| 124 | ✗ | ret = ff_vaapi_decode_issue(avctx, pic); | |
| 125 | ✗ | if (ret < 0) | |
| 126 | ✗ | goto fail; | |
| 127 | |||
| 128 | ✗ | ff_mpeg_draw_horiz_band(s, 0, s->avctx->height); | |
| 129 | |||
| 130 | ✗ | fail: | |
| 131 | ✗ | return ret; | |
| 132 | } | ||
| 133 | |||
| 134 | ✗ | static int vaapi_mpeg2_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size) | |
| 135 | { | ||
| 136 | ✗ | const MpegEncContext *s = avctx->priv_data; | |
| 137 | ✗ | VAAPIDecodePicture *pic = s->cur_pic.ptr->hwaccel_picture_private; | |
| 138 | VASliceParameterBufferMPEG2 slice_param; | ||
| 139 | GetBitContext gb; | ||
| 140 | uint32_t quantiser_scale_code, intra_slice_flag, macroblock_offset; | ||
| 141 | int err; | ||
| 142 | |||
| 143 | /* Determine macroblock_offset */ | ||
| 144 | ✗ | init_get_bits(&gb, buffer, 8 * size); | |
| 145 | ✗ | if (get_bits_long(&gb, 32) >> 8 != 1) /* start code */ | |
| 146 | ✗ | return AVERROR_INVALIDDATA; | |
| 147 | ✗ | quantiser_scale_code = get_bits(&gb, 5); | |
| 148 | ✗ | intra_slice_flag = get_bits1(&gb); | |
| 149 | ✗ | if (intra_slice_flag) { | |
| 150 | ✗ | skip_bits(&gb, 8); | |
| 151 | ✗ | if (skip_1stop_8data_bits(&gb) < 0) | |
| 152 | ✗ | return AVERROR_INVALIDDATA; | |
| 153 | } | ||
| 154 | ✗ | macroblock_offset = get_bits_count(&gb); | |
| 155 | |||
| 156 | ✗ | slice_param = (VASliceParameterBufferMPEG2) { | |
| 157 | .slice_data_size = size, | ||
| 158 | .slice_data_offset = 0, | ||
| 159 | .slice_data_flag = VA_SLICE_DATA_FLAG_ALL, | ||
| 160 | .macroblock_offset = macroblock_offset, | ||
| 161 | ✗ | .slice_horizontal_position = s->mb_x, | |
| 162 | ✗ | .slice_vertical_position = s->mb_y >> (s->picture_structure != PICT_FRAME), | |
| 163 | .quantiser_scale_code = quantiser_scale_code, | ||
| 164 | .intra_slice_flag = intra_slice_flag, | ||
| 165 | }; | ||
| 166 | |||
| 167 | ✗ | err = ff_vaapi_decode_make_slice_buffer(avctx, pic, | |
| 168 | &slice_param, 1, sizeof(slice_param), | ||
| 169 | buffer, size); | ||
| 170 | ✗ | if (err < 0) { | |
| 171 | ✗ | ff_vaapi_decode_cancel(avctx, pic); | |
| 172 | ✗ | return err; | |
| 173 | } | ||
| 174 | |||
| 175 | ✗ | return 0; | |
| 176 | } | ||
| 177 | |||
| 178 | const FFHWAccel ff_mpeg2_vaapi_hwaccel = { | ||
| 179 | .p.name = "mpeg2_vaapi", | ||
| 180 | .p.type = AVMEDIA_TYPE_VIDEO, | ||
| 181 | .p.id = AV_CODEC_ID_MPEG2VIDEO, | ||
| 182 | .p.pix_fmt = AV_PIX_FMT_VAAPI, | ||
| 183 | .start_frame = &vaapi_mpeg2_start_frame, | ||
| 184 | .end_frame = &vaapi_mpeg2_end_frame, | ||
| 185 | .decode_slice = &vaapi_mpeg2_decode_slice, | ||
| 186 | .frame_priv_data_size = sizeof(VAAPIDecodePicture), | ||
| 187 | .init = &ff_vaapi_decode_init, | ||
| 188 | .uninit = &ff_vaapi_decode_uninit, | ||
| 189 | .frame_params = &ff_vaapi_common_frame_params, | ||
| 190 | .priv_data_size = sizeof(VAAPIDecodeContext), | ||
| 191 | .caps_internal = HWACCEL_CAP_ASYNC_SAFE, | ||
| 192 | }; | ||
| 193 |