| 1 | /* |
| 2 | * MPEG-1/2 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 "vdpau.h" |
| 28 | #include "vdpau_internal.h" |
| 29 | |
| 30 | static int vdpau_mpeg_start_frame(AVCodecContext *avctx, |
| 31 | const uint8_t *buffer, uint32_t size) |
| 32 | { |
| 33 | MpegEncContext * const s = avctx->priv_data; |
| 34 | Picture *pic = s->current_picture_ptr; |
| 35 | struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private; |
| 36 | VdpPictureInfoMPEG1Or2 *info = &pic_ctx->info.mpeg; |
| 37 | VdpVideoSurface ref; |
| 38 | int i; |
| 39 | |
| 40 | /* fill VdpPictureInfoMPEG1Or2 struct */ |
| 41 | info->forward_reference = VDP_INVALID_HANDLE; |
| 42 | info->backward_reference = VDP_INVALID_HANDLE; |
| 43 | |
| 44 | switch (s->pict_type) { |
| 45 | case AV_PICTURE_TYPE_B: |
| 46 | ref = ff_vdpau_get_surface_id(s->next_picture.f); |
| 47 | assert(ref != VDP_INVALID_HANDLE); |
| 48 | info->backward_reference = ref; |
| 49 | /* fall through to forward prediction */ |
| 50 | case AV_PICTURE_TYPE_P: |
| 51 | ref = ff_vdpau_get_surface_id(s->last_picture.f); |
| 52 | info->forward_reference = ref; |
| 53 | } |
| 54 | |
| 55 | info->slice_count = 0; |
| 56 | info->picture_structure = s->picture_structure; |
| 57 | info->picture_coding_type = s->pict_type; |
| 58 | info->intra_dc_precision = s->intra_dc_precision; |
| 59 | info->frame_pred_frame_dct = s->frame_pred_frame_dct; |
| 60 | info->concealment_motion_vectors = s->concealment_motion_vectors; |
| 61 | info->intra_vlc_format = s->intra_vlc_format; |
| 62 | info->alternate_scan = s->alternate_scan; |
| 63 | info->q_scale_type = s->q_scale_type; |
| 64 | info->top_field_first = s->top_field_first; |
| 65 | // Both for MPEG-1 only, zero for MPEG-2: |
| 66 | info->full_pel_forward_vector = s->full_pel[0]; |
| 67 | info->full_pel_backward_vector = s->full_pel[1]; |
| 68 | // For MPEG-1 fill both horizontal & vertical: |
| 69 | info->f_code[0][0] = s->mpeg_f_code[0][0]; |
| 70 | info->f_code[0][1] = s->mpeg_f_code[0][1]; |
| 71 | info->f_code[1][0] = s->mpeg_f_code[1][0]; |
| 72 | info->f_code[1][1] = s->mpeg_f_code[1][1]; |
| 73 | for (i = 0; i < 64; ++i) { |
| 74 | info->intra_quantizer_matrix[i] = s->intra_matrix[i]; |
| 75 | info->non_intra_quantizer_matrix[i] = s->inter_matrix[i]; |
| 76 | } |
| 77 | |
| 78 | return ff_vdpau_common_start_frame(pic_ctx, buffer, size); |
| 79 | } |
| 80 | |
| 81 | static int vdpau_mpeg_decode_slice(AVCodecContext *avctx, |
| 82 | const uint8_t *buffer, uint32_t size) |
| 83 | { |
| 84 | MpegEncContext * const s = avctx->priv_data; |
| 85 | Picture *pic = s->current_picture_ptr; |
| 86 | struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private; |
| 87 | int val; |
| 88 | |
| 89 | val = ff_vdpau_add_buffer(pic_ctx, buffer, size); |
| 90 | if (val < 0) |
| 91 | return val; |
| 92 | |
| 93 | pic_ctx->info.mpeg.slice_count++; |
| 94 | return 0; |
| 95 | } |
| 96 | |
| 97 | #if CONFIG_MPEG1_VDPAU_HWACCEL |
| 98 | AVHWAccel ff_mpeg1_vdpau_hwaccel = { |
| 99 | .name = "mpeg1_vdpau", |
| 100 | .type = AVMEDIA_TYPE_VIDEO, |
| 101 | .id = AV_CODEC_ID_MPEG1VIDEO, |
| 102 | .pix_fmt = AV_PIX_FMT_VDPAU, |
| 103 | .start_frame = vdpau_mpeg_start_frame, |
| 104 | .end_frame = ff_vdpau_mpeg_end_frame, |
| 105 | .decode_slice = vdpau_mpeg_decode_slice, |
| 106 | .frame_priv_data_size = sizeof(struct vdpau_picture_context), |
| 107 | }; |
| 108 | #endif |
| 109 | |
| 110 | #if CONFIG_MPEG2_VDPAU_HWACCEL |
| 111 | AVHWAccel ff_mpeg2_vdpau_hwaccel = { |
| 112 | .name = "mpeg2_vdpau", |
| 113 | .type = AVMEDIA_TYPE_VIDEO, |
| 114 | .id = AV_CODEC_ID_MPEG2VIDEO, |
| 115 | .pix_fmt = AV_PIX_FMT_VDPAU, |
| 116 | .start_frame = vdpau_mpeg_start_frame, |
| 117 | .end_frame = ff_vdpau_mpeg_end_frame, |
| 118 | .decode_slice = vdpau_mpeg_decode_slice, |
| 119 | .frame_priv_data_size = sizeof(struct vdpau_picture_context), |
| 120 | }; |
| 121 | #endif |