/* * MPEG-1/2 HW decode acceleration through VDPAU * * Copyright (c) 2008 NVIDIA * Copyright (c) 2013 RĂ©mi Denis-Courmont * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software Foundation, * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include <vdpau/vdpau.h> #include "avcodec.h" #include "vdpau.h" #include "vdpau_internal.h" static int vdpau_mpeg_start_frame(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size) { MpegEncContext * const s = avctx->priv_data; AVVDPAUContext *hwctx = avctx->hwaccel_context; VdpPictureInfoMPEG1Or2 *info = &hwctx->info.mpeg; VdpVideoSurface ref; int i; /* fill VdpPictureInfoMPEG1Or2 struct */ info->forward_reference = VDP_INVALID_HANDLE; info->backward_reference = VDP_INVALID_HANDLE; switch (s->pict_type) { case AV_PICTURE_TYPE_B: ref = ff_vdpau_get_surface_id(&s->next_picture); assert(ref != VDP_INVALID_HANDLE); hwctx->info.mpeg.backward_reference = ref; /* fall through to forward prediction */ case AV_PICTURE_TYPE_P: ref = ff_vdpau_get_surface_id(&s->last_picture); hwctx->info.mpeg.forward_reference = ref; } info->slice_count = 0; info->picture_structure = s->picture_structure; info->picture_coding_type = s->pict_type; info->intra_dc_precision = s->intra_dc_precision; info->frame_pred_frame_dct = s->frame_pred_frame_dct; info->concealment_motion_vectors = s->concealment_motion_vectors; info->intra_vlc_format = s->intra_vlc_format; info->alternate_scan = s->alternate_scan; info->q_scale_type = s->q_scale_type; info->top_field_first = s->top_field_first; // Both for MPEG-1 only, zero for MPEG-2: info->full_pel_forward_vector = s->full_pel[0]; info->full_pel_backward_vector = s->full_pel[1]; // For MPEG-1 fill both horizontal & vertical: info->f_code[0][0] = s->mpeg_f_code[0][0]; info->f_code[0][1] = s->mpeg_f_code[0][1]; info->f_code[1][0] = s->mpeg_f_code[1][0]; info->f_code[1][1] = s->mpeg_f_code[1][1]; for (i = 0; i < 64; ++i) { info->intra_quantizer_matrix[i] = s->intra_matrix[i]; info->non_intra_quantizer_matrix[i] = s->inter_matrix[i]; } return ff_vdpau_common_start_frame(avctx, buffer, size); } static int vdpau_mpeg_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size) { AVVDPAUContext *hwctx = avctx->hwaccel_context; int val; val = ff_vdpau_add_buffer(avctx, buffer, size); if (val < 0) return val; hwctx->info.mpeg.slice_count++; return 0; } #if CONFIG_MPEG1_VDPAU_HWACCEL AVHWAccel ff_mpeg1_vdpau_hwaccel = { .name = "mpeg1_vdpau", .type = AVMEDIA_TYPE_VIDEO, .id = AV_CODEC_ID_MPEG1VIDEO, .pix_fmt = AV_PIX_FMT_VDPAU, .start_frame = vdpau_mpeg_start_frame, .end_frame = ff_vdpau_mpeg_end_frame, .decode_slice = vdpau_mpeg_decode_slice, }; #endif #if CONFIG_MPEG2_VDPAU_HWACCEL AVHWAccel ff_mpeg2_vdpau_hwaccel = { .name = "mpeg2_vdpau", .type = AVMEDIA_TYPE_VIDEO, .id = AV_CODEC_ID_MPEG2VIDEO, .pix_fmt = AV_PIX_FMT_VDPAU, .start_frame = vdpau_mpeg_start_frame, .end_frame = ff_vdpau_mpeg_end_frame, .decode_slice = vdpau_mpeg_decode_slice, }; #endif