blob: bbdd843a449c7ca963620b203b38ecd5d59cdd51
| 1 | /* |
| 2 | * MPEG-4 Part 2 / H.263 decode acceleration through VDPAU |
| 3 | * |
| 4 | * Copyright (c) 2008 NVIDIA |
| 5 | * Copyright (c) 2013 Rémi 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 "hwaccel.h" |
| 28 | #include "mpeg4video.h" |
| 29 | #include "vdpau.h" |
| 30 | #include "vdpau_internal.h" |
| 31 | |
| 32 | static int vdpau_mpeg4_start_frame(AVCodecContext *avctx, |
| 33 | const uint8_t *buffer, uint32_t size) |
| 34 | { |
| 35 | Mpeg4DecContext *ctx = avctx->priv_data; |
| 36 | MpegEncContext * const s = &ctx->m; |
| 37 | Picture *pic = s->current_picture_ptr; |
| 38 | struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private; |
| 39 | VdpPictureInfoMPEG4Part2 *info = &pic_ctx->info.mpeg4; |
| 40 | VdpVideoSurface ref; |
| 41 | int i; |
| 42 | |
| 43 | /* fill VdpPictureInfoMPEG4Part2 struct */ |
| 44 | info->forward_reference = VDP_INVALID_HANDLE; |
| 45 | info->backward_reference = VDP_INVALID_HANDLE; |
| 46 | info->vop_coding_type = 0; |
| 47 | |
| 48 | switch (s->pict_type) { |
| 49 | case AV_PICTURE_TYPE_B: |
| 50 | ref = ff_vdpau_get_surface_id(s->next_picture.f); |
| 51 | assert(ref != VDP_INVALID_HANDLE); |
| 52 | info->backward_reference = ref; |
| 53 | info->vop_coding_type = 2; |
| 54 | /* fall-through */ |
| 55 | case AV_PICTURE_TYPE_P: |
| 56 | ref = ff_vdpau_get_surface_id(s->last_picture.f); |
| 57 | assert(ref != VDP_INVALID_HANDLE); |
| 58 | info->forward_reference = ref; |
| 59 | } |
| 60 | |
| 61 | info->trd[0] = s->pp_time; |
| 62 | info->trb[0] = s->pb_time; |
| 63 | info->trd[1] = s->pp_field_time >> 1; |
| 64 | info->trb[1] = s->pb_field_time >> 1; |
| 65 | info->vop_time_increment_resolution = s->avctx->framerate.num; |
| 66 | info->vop_fcode_forward = s->f_code; |
| 67 | info->vop_fcode_backward = s->b_code; |
| 68 | info->resync_marker_disable = !ctx->resync_marker; |
| 69 | info->interlaced = !s->progressive_sequence; |
| 70 | info->quant_type = s->mpeg_quant; |
| 71 | info->quarter_sample = s->quarter_sample; |
| 72 | info->short_video_header = avctx->codec->id == AV_CODEC_ID_H263; |
| 73 | info->rounding_control = s->no_rounding; |
| 74 | info->alternate_vertical_scan_flag = s->alternate_scan; |
| 75 | info->top_field_first = s->top_field_first; |
| 76 | for (i = 0; i < 64; ++i) { |
| 77 | info->intra_quantizer_matrix[i] = s->intra_matrix[i]; |
| 78 | info->non_intra_quantizer_matrix[i] = s->inter_matrix[i]; |
| 79 | } |
| 80 | |
| 81 | ff_vdpau_common_start_frame(pic_ctx, buffer, size); |
| 82 | return ff_vdpau_add_buffer(pic_ctx, buffer, size); |
| 83 | } |
| 84 | |
| 85 | static int vdpau_mpeg4_decode_slice(av_unused AVCodecContext *avctx, |
| 86 | av_unused const uint8_t *buffer, |
| 87 | av_unused uint32_t size) |
| 88 | { |
| 89 | return 0; |
| 90 | } |
| 91 | |
| 92 | static int vdpau_mpeg4_init(AVCodecContext *avctx) |
| 93 | { |
| 94 | VdpDecoderProfile profile; |
| 95 | |
| 96 | switch (avctx->profile) { |
| 97 | case FF_PROFILE_MPEG4_SIMPLE: |
| 98 | profile = VDP_DECODER_PROFILE_MPEG4_PART2_SP; |
| 99 | break; |
| 100 | // As any ASP decoder must be able to decode SP, this |
| 101 | // should be a safe fallback if profile is unknown/unspecified. |
| 102 | case FF_PROFILE_UNKNOWN: |
| 103 | case FF_PROFILE_MPEG4_ADVANCED_SIMPLE: |
| 104 | profile = VDP_DECODER_PROFILE_MPEG4_PART2_ASP; |
| 105 | break; |
| 106 | default: |
| 107 | return AVERROR(ENOTSUP); |
| 108 | } |
| 109 | |
| 110 | return ff_vdpau_common_init(avctx, profile, avctx->level); |
| 111 | } |
| 112 | |
| 113 | AVHWAccel ff_mpeg4_vdpau_hwaccel = { |
| 114 | .name = "mpeg4_vdpau", |
| 115 | .type = AVMEDIA_TYPE_VIDEO, |
| 116 | .id = AV_CODEC_ID_MPEG4, |
| 117 | .pix_fmt = AV_PIX_FMT_VDPAU, |
| 118 | .start_frame = vdpau_mpeg4_start_frame, |
| 119 | .end_frame = ff_vdpau_mpeg_end_frame, |
| 120 | .decode_slice = vdpau_mpeg4_decode_slice, |
| 121 | .frame_priv_data_size = sizeof(struct vdpau_picture_context), |
| 122 | .init = vdpau_mpeg4_init, |
| 123 | .uninit = ff_vdpau_common_uninit, |
| 124 | .priv_data_size = sizeof(VDPAUContext), |
| 125 | .caps_internal = HWACCEL_CAP_ASYNC_SAFE, |
| 126 | }; |
| 127 |