From 200e8ac92007bc2fe30da05d3bd00ab620842a6b Mon Sep 17 00:00:00 2001 From: Rémi Denis-Courmont Date: Sat, 12 Jan 2013 17:53:45 +0200 Subject: vdpau: Add MPEG-4 decoding via hwaccel infrastructure Signed-off-by: Diego Biurrun --- libavcodec/vdpau_mpeg4.c | 110 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 110 insertions(+) create mode 100644 libavcodec/vdpau_mpeg4.c (limited to 'libavcodec/vdpau_mpeg4.c') diff --git a/libavcodec/vdpau_mpeg4.c b/libavcodec/vdpau_mpeg4.c new file mode 100644 index 0000000000..706e2b689e --- /dev/null +++ b/libavcodec/vdpau_mpeg4.c @@ -0,0 +1,110 @@ +/* + * MPEG-4 Part 2 / H.263 decode acceleration through VDPAU + * + * Copyright (c) 2008 NVIDIA + * Copyright (c) 2013 Rémi Denis-Courmont + * + * This file is part of Libav. + * + * Libav 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. + * + * Libav 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 Libav; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include + +#include "avcodec.h" +#include "vdpau.h" +#include "vdpau_internal.h" + +static int vdpau_mpeg4_start_frame(AVCodecContext *avctx, + const uint8_t *buffer, uint32_t size) +{ + MpegEncContext * const s = avctx->priv_data; + AVVDPAUContext *hwctx = avctx->hwaccel_context; + VdpPictureInfoMPEG4Part2 *info = &hwctx->info.mpeg4; + VdpVideoSurface ref; + int i; + + /* fill VdpPictureInfoMPEG4Part2 struct */ + info->forward_reference = VDP_INVALID_HANDLE; + info->backward_reference = VDP_INVALID_HANDLE; + info->vop_coding_type = 0; + + switch (s->pict_type) { + case AV_PICTURE_TYPE_B: + ref = ff_vdpau_get_surface_id(&s->next_picture); + assert(ref != VDP_INVALID_HANDLE); + info->backward_reference = ref; + info->vop_coding_type = 2; + /* fall-through */ + case AV_PICTURE_TYPE_P: + ref = ff_vdpau_get_surface_id(&s->last_picture); + assert(ref != VDP_INVALID_HANDLE); + info->forward_reference = ref; + } + + info->trd[0] = s->pp_time; + info->trb[0] = s->pb_time; + info->trd[1] = s->pp_field_time >> 1; + info->trb[1] = s->pb_field_time >> 1; + info->vop_time_increment_resolution = s->avctx->time_base.den; + info->vop_fcode_forward = s->f_code; + info->vop_fcode_backward = s->b_code; + info->resync_marker_disable = !s->resync_marker; + info->interlaced = !s->progressive_sequence; + info->quant_type = s->mpeg_quant; + info->quarter_sample = s->quarter_sample; + info->short_video_header = avctx->codec->id == AV_CODEC_ID_H263; + info->rounding_control = s->no_rounding; + info->alternate_vertical_scan_flag = s->alternate_scan; + info->top_field_first = s->top_field_first; + 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]; + } + + ff_vdpau_common_start_frame(avctx, buffer, size); + return ff_vdpau_add_buffer(avctx, buffer, size); +} + +static int vdpau_mpeg4_decode_slice(av_unused AVCodecContext *avctx, + av_unused const uint8_t *buffer, + av_unused uint32_t size) +{ + return 0; +} + +#if CONFIG_H263_VDPAU_HWACCEL +AVHWAccel ff_h263_vdpau_hwaccel = { + .name = "h263_vdpau", + .type = AVMEDIA_TYPE_VIDEO, + .id = AV_CODEC_ID_H263, + .pix_fmt = AV_PIX_FMT_VDPAU, + .start_frame = vdpau_mpeg4_start_frame, + .end_frame = ff_vdpau_common_end_frame, + .decode_slice = vdpau_mpeg4_decode_slice, +}; +#endif + +#if CONFIG_MPEG4_VDPAU_HWACCEL +AVHWAccel ff_mpeg4_vdpau_hwaccel = { + .name = "mpeg4_vdpau", + .type = AVMEDIA_TYPE_VIDEO, + .id = AV_CODEC_ID_MPEG4, + .pix_fmt = AV_PIX_FMT_VDPAU, + .start_frame = vdpau_mpeg4_start_frame, + .end_frame = ff_vdpau_common_end_frame, + .decode_slice = vdpau_mpeg4_decode_slice, +}; +#endif -- cgit v1.2.3