lavc/htmlsubtitles: improve line breaks handling
[ffmpeg.git] / libavcodec / vaapi_mpeg4.c
1 /*
2  * MPEG-4 / H.263 HW decode acceleration through VA API
3  *
4  * Copyright (C) 2008-2009 Splitted-Desktop Systems
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22
23 #include "h263.h"
24 #include "hwaccel.h"
25 #include "internal.h"
26 #include "mpeg4video.h"
27 #include "mpegvideo.h"
28 #include "vaapi_decode.h"
29
30 /** Reconstruct bitstream intra_dc_vlc_thr */
31 static int mpeg4_get_intra_dc_vlc_thr(Mpeg4DecContext *s)
32 {
33     switch (s->intra_dc_threshold) {
34     case 99: return 0;
35     case 13: return 1;
36     case 15: return 2;
37     case 17: return 3;
38     case 19: return 4;
39     case 21: return 5;
40     case 23: return 6;
41     case 0:  return 7;
42     }
43     return 0;
44 }
45
46 static int vaapi_mpeg4_start_frame(AVCodecContext *avctx, av_unused const uint8_t *buffer, av_unused uint32_t size)
47 {
48     Mpeg4DecContext *ctx = avctx->priv_data;
49     MpegEncContext *s = &ctx->m;
50     VAAPIDecodePicture *pic = s->current_picture_ptr->hwaccel_picture_private;
51     VAPictureParameterBufferMPEG4 pic_param;
52     int i, err;
53
54     pic->output_surface = ff_vaapi_get_surface_id(s->current_picture_ptr->f);
55
56     pic_param = (VAPictureParameterBufferMPEG4) {
57         .vop_width                        = s->width,
58         .vop_height                       = s->height,
59         .forward_reference_picture        = VA_INVALID_ID,
60         .backward_reference_picture       = VA_INVALID_ID,
61         .vol_fields.bits = {
62             .short_video_header           = avctx->codec->id == AV_CODEC_ID_H263,
63             .chroma_format                = CHROMA_420,
64             .interlaced                   = !s->progressive_sequence,
65             .obmc_disable                 = 1,
66             .sprite_enable                = ctx->vol_sprite_usage,
67             .sprite_warping_accuracy      = s->sprite_warping_accuracy,
68             .quant_type                   = s->mpeg_quant,
69             .quarter_sample               = s->quarter_sample,
70             .data_partitioned             = s->data_partitioning,
71             .reversible_vlc               = ctx->rvlc,
72             .resync_marker_disable        = !ctx->resync_marker,
73         },
74         .no_of_sprite_warping_points      = ctx->num_sprite_warping_points,
75         .quant_precision                  = s->quant_precision,
76         .vop_fields.bits = {
77             .vop_coding_type              = s->pict_type - AV_PICTURE_TYPE_I,
78             .backward_reference_vop_coding_type =
79                 s->pict_type == AV_PICTURE_TYPE_B ? s->next_picture.f->pict_type - AV_PICTURE_TYPE_I : 0,
80             .vop_rounding_type            = s->no_rounding,
81             .intra_dc_vlc_thr             = mpeg4_get_intra_dc_vlc_thr(ctx),
82             .top_field_first              = s->top_field_first,
83             .alternate_vertical_scan_flag = s->alternate_scan,
84         },
85         .vop_fcode_forward                = s->f_code,
86         .vop_fcode_backward               = s->b_code,
87         .vop_time_increment_resolution    = avctx->framerate.num,
88         .num_macroblocks_in_gob           = s->mb_width * H263_GOB_HEIGHT(s->height),
89         .num_gobs_in_vop                  =
90             (s->mb_width * s->mb_height) / (s->mb_width * H263_GOB_HEIGHT(s->height)),
91         .TRB                              = s->pb_time,
92         .TRD                              = s->pp_time,
93     };
94
95     for (i = 0; i < ctx->num_sprite_warping_points && i < 3; i++) {
96         pic_param.sprite_trajectory_du[i]              = ctx->sprite_traj[i][0];
97         pic_param.sprite_trajectory_dv[i]              = ctx->sprite_traj[i][1];
98     }
99
100     if (s->pict_type == AV_PICTURE_TYPE_B)
101         pic_param.backward_reference_picture = ff_vaapi_get_surface_id(s->next_picture.f);
102     if (s->pict_type != AV_PICTURE_TYPE_I)
103         pic_param.forward_reference_picture  = ff_vaapi_get_surface_id(s->last_picture.f);
104
105     err = ff_vaapi_decode_make_param_buffer(avctx, pic,
106                                             VAPictureParameterBufferType,
107                                             &pic_param, sizeof(pic_param));
108     if (err < 0)
109         goto fail;
110
111     /* Only the first inverse quantisation method uses the weighting matrices */
112     if (pic_param.vol_fields.bits.quant_type) {
113         VAIQMatrixBufferMPEG4 iq_matrix;
114
115         iq_matrix.load_intra_quant_mat     = 1;
116         iq_matrix.load_non_intra_quant_mat = 1;
117
118         for (i = 0; i < 64; i++) {
119             int n = s->idsp.idct_permutation[ff_zigzag_direct[i]];
120             iq_matrix.intra_quant_mat[i]     = s->intra_matrix[n];
121             iq_matrix.non_intra_quant_mat[i] = s->inter_matrix[n];
122         }
123
124         err = ff_vaapi_decode_make_param_buffer(avctx, pic,
125                                                 VAIQMatrixBufferType,
126                                                 &iq_matrix, sizeof(iq_matrix));
127         if (err < 0)
128             goto fail;
129     }
130     return 0;
131
132 fail:
133     ff_vaapi_decode_cancel(avctx, pic);
134     return err;
135 }
136
137 static int vaapi_mpeg4_end_frame(AVCodecContext *avctx)
138 {
139     MpegEncContext *s = avctx->priv_data;
140     VAAPIDecodePicture *pic = s->current_picture_ptr->hwaccel_picture_private;
141     int ret;
142
143     ret = ff_vaapi_decode_issue(avctx, pic);
144     if (ret < 0)
145         goto fail;
146
147     ff_mpeg_draw_horiz_band(s, 0, s->avctx->height);
148
149 fail:
150     return ret;
151 }
152
153 static int vaapi_mpeg4_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
154 {
155     MpegEncContext *s = avctx->priv_data;
156     VAAPIDecodePicture *pic = s->current_picture_ptr->hwaccel_picture_private;
157     VASliceParameterBufferMPEG4 slice_param;
158     int err;
159
160     slice_param = (VASliceParameterBufferMPEG4) {
161         .slice_data_size   = size,
162         .slice_data_offset = 0,
163         .slice_data_flag   = VA_SLICE_DATA_FLAG_ALL,
164         .macroblock_offset = get_bits_count(&s->gb) % 8,
165         .macroblock_number = 0,
166         .quant_scale       = s->qscale,
167     };
168
169     err = ff_vaapi_decode_make_slice_buffer(avctx, pic,
170                                             &slice_param, sizeof(slice_param),
171                                             buffer, size);
172     if (err < 0) {
173         ff_vaapi_decode_cancel(avctx, pic);
174         return err;
175     }
176
177     return 0;
178 }
179
180 #if CONFIG_MPEG4_VAAPI_HWACCEL
181 AVHWAccel ff_mpeg4_vaapi_hwaccel = {
182     .name                 = "mpeg4_vaapi",
183     .type                 = AVMEDIA_TYPE_VIDEO,
184     .id                   = AV_CODEC_ID_MPEG4,
185     .pix_fmt              = AV_PIX_FMT_VAAPI,
186     .start_frame          = &vaapi_mpeg4_start_frame,
187     .end_frame            = &vaapi_mpeg4_end_frame,
188     .decode_slice         = &vaapi_mpeg4_decode_slice,
189     .frame_priv_data_size = sizeof(VAAPIDecodePicture),
190     .init                 = &ff_vaapi_decode_init,
191     .uninit               = &ff_vaapi_decode_uninit,
192     .priv_data_size       = sizeof(VAAPIDecodeContext),
193     .caps_internal        = HWACCEL_CAP_ASYNC_SAFE,
194 };
195 #endif
196
197 #if CONFIG_H263_VAAPI_HWACCEL
198 AVHWAccel ff_h263_vaapi_hwaccel = {
199     .name                 = "h263_vaapi",
200     .type                 = AVMEDIA_TYPE_VIDEO,
201     .id                   = AV_CODEC_ID_H263,
202     .pix_fmt              = AV_PIX_FMT_VAAPI,
203     .start_frame          = &vaapi_mpeg4_start_frame,
204     .end_frame            = &vaapi_mpeg4_end_frame,
205     .decode_slice         = &vaapi_mpeg4_decode_slice,
206     .frame_priv_data_size = sizeof(VAAPIDecodePicture),
207     .init                 = &ff_vaapi_decode_init,
208     .uninit               = &ff_vaapi_decode_uninit,
209     .priv_data_size       = sizeof(VAAPIDecodeContext),
210     .caps_internal        = HWACCEL_CAP_ASYNC_SAFE,
211 };
212 #endif