From aaf9d0e8f3964d0dc541ab7d596972a2e24f07ca Mon Sep 17 00:00:00 2001 From: Rémi Denis-Courmont Date: Sat, 12 Jan 2013 17:53:44 +0200 Subject: vdpau: Add MPEG-1/2 decoding via hwaccel infrastructure Signed-off-by: Diego Biurrun --- libavcodec/vdpau_mpeg12.c | 116 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 116 insertions(+) create mode 100644 libavcodec/vdpau_mpeg12.c (limited to 'libavcodec/vdpau_mpeg12.c') diff --git a/libavcodec/vdpau_mpeg12.c b/libavcodec/vdpau_mpeg12.c new file mode 100644 index 0000000000..d2d4ac3c25 --- /dev/null +++ b/libavcodec/vdpau_mpeg12.c @@ -0,0 +1,116 @@ +/* + * MPEG-1/2 HW 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_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_common_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_common_end_frame, + .decode_slice = vdpau_mpeg_decode_slice, +}; +#endif -- cgit v1.2.3