1/*
2 * This file is part of FFmpeg.
3 *
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19#include <va/va.h>
20#include <va/va_dec_jpeg.h>
21
22#include "hwconfig.h"
23#include "vaapi_decode.h"
24#include "mjpegdec.h"
25
26static int vaapi_mjpeg_start_frame(AVCodecContext          *avctx,
27                                   av_unused const uint8_t *buffer,
28                                   av_unused uint32_t       size)
29{
30    const MJpegDecodeContext *s = avctx->priv_data;
31    VAAPIDecodePicture *pic = s->hwaccel_picture_private;
32    VAPictureParameterBufferJPEGBaseline pp;
33    int err, i;
34
35    pic->output_surface = ff_vaapi_get_surface_id(s->picture_ptr);
36
37    pp = (VAPictureParameterBufferJPEGBaseline) {
38        .picture_width  = avctx->width,
39        .picture_height = avctx->height,
40
41        .num_components = s->nb_components,
42    };
43
44    for (i = 0; i < s->nb_components; i++) {
45        pp.components[i].component_id             = s->component_id[i];
46        pp.components[i].h_sampling_factor        = s->h_count[i];
47        pp.components[i].v_sampling_factor        = s->v_count[i];
48        pp.components[i].quantiser_table_selector = s->quant_index[i];
49    }
50
51    err = ff_vaapi_decode_make_param_buffer(avctx, pic,
52                                            VAPictureParameterBufferType,
53                                            &pp, sizeof(pp));
54    if (err < 0)
55        goto fail;
56
57    return 0;
58
59fail:
60    ff_vaapi_decode_cancel(avctx, pic);
61    return err;
62}
63
64static int vaapi_mjpeg_end_frame(AVCodecContext *avctx)
65{
66    const MJpegDecodeContext *s = avctx->priv_data;
67    VAAPIDecodePicture *pic = s->hwaccel_picture_private;
68
69    return ff_vaapi_decode_issue(avctx, pic);
70}
71
72static int vaapi_mjpeg_decode_slice(AVCodecContext *avctx,
73                                    const uint8_t  *buffer,
74                                    uint32_t        size)
75{
76    const MJpegDecodeContext *s = avctx->priv_data;
77    VAAPIDecodePicture *pic = s->hwaccel_picture_private;
78    VAHuffmanTableBufferJPEGBaseline huff;
79    VAIQMatrixBufferJPEGBaseline quant;
80    VASliceParameterBufferJPEGBaseline sp;
81    int err, i, j;
82
83    memset(&huff, 0, sizeof(huff));
84    for (i = 0; i < 2; i++) {
85        huff.load_huffman_table[i] = 1;
86        for (j = 0; j < 16; j++)
87            huff.huffman_table[i].num_dc_codes[j] = s->raw_huffman_lengths[0][i][j];
88        for (j = 0; j < 12; j++)
89            huff.huffman_table[i].dc_values[j] = s->raw_huffman_values[0][i][j];
90        for (j = 0; j < 16; j++)
91            huff.huffman_table[i].num_ac_codes[j] = s->raw_huffman_lengths[1][i][j];
92        for (j = 0; j < 162; j++)
93            huff.huffman_table[i].ac_values[j] = s->raw_huffman_values[1][i][j];
94    }
95
96    err = ff_vaapi_decode_make_param_buffer(avctx, pic,
97                                            VAHuffmanTableBufferType,
98                                            &huff, sizeof(huff));
99    if (err < 0)
100        goto fail;
101
102    memset(&quant, 0, sizeof(quant));
103    for (i = 0; i < 4; i++) {
104        quant.load_quantiser_table[i] = 1;
105        for (j = 0; j < 64; j++)
106            quant.quantiser_table[i][j] = s->quant_matrixes[i][j];
107    }
108
109    err = ff_vaapi_decode_make_param_buffer(avctx, pic,
110                                            VAIQMatrixBufferType,
111                                            &quant, sizeof(quant));
112    if (err < 0)
113        goto fail;
114
115    sp = (VASliceParameterBufferJPEGBaseline) {
116        .slice_data_size   = size,
117        .slice_data_offset = 0,
118        .slice_data_flag   = VA_SLICE_DATA_FLAG_ALL,
119
120        .slice_horizontal_position = 0,
121        .slice_vertical_position   = 0,
122
123        .restart_interval          = s->restart_interval,
124        .num_mcus                  = s->mb_width * s->mb_height,
125    };
126
127    sp.num_components = s->nb_components;
128    for (i = 0; i < s->nb_components; i++) {
129        sp.components[i].component_selector = s->component_id[s->comp_index[i]];
130        sp.components[i].dc_table_selector  = s->dc_index[i];
131        sp.components[i].ac_table_selector  = s->ac_index[i];
132    }
133
134    err = ff_vaapi_decode_make_slice_buffer(avctx, pic, &sp, sizeof(sp), buffer, size);
135    if (err)
136        goto fail;
137
138    return 0;
139
140fail:
141    ff_vaapi_decode_cancel(avctx, pic);
142    return err;
143}
144
145const AVHWAccel ff_mjpeg_vaapi_hwaccel = {
146    .name                 = "mjpeg_vaapi",
147    .type                 = AVMEDIA_TYPE_VIDEO,
148    .id                   = AV_CODEC_ID_MJPEG,
149    .pix_fmt              = AV_PIX_FMT_VAAPI,
150    .start_frame          = &vaapi_mjpeg_start_frame,
151    .end_frame            = &vaapi_mjpeg_end_frame,
152    .decode_slice         = &vaapi_mjpeg_decode_slice,
153    .frame_priv_data_size = sizeof(VAAPIDecodePicture),
154    .init                 = &ff_vaapi_decode_init,
155    .uninit               = &ff_vaapi_decode_uninit,
156    .frame_params         = &ff_vaapi_common_frame_params,
157    .priv_data_size       = sizeof(VAAPIDecodeContext),
158    .caps_internal        = HWACCEL_CAP_ASYNC_SAFE,
159};
160