blob: d6423acb9106779b2517f16ece1a913064fba20a
1 | /* |
2 | * Copyright (c) 2009 Stefano Sabatini |
3 | * |
4 | * This file is part of FFmpeg. |
5 | * |
6 | * FFmpeg is free software; you can redistribute it and/or |
7 | * modify it under the terms of the GNU Lesser General Public |
8 | * License as published by the Free Software Foundation; either |
9 | * version 2.1 of the License, or (at your option) any later version. |
10 | * |
11 | * FFmpeg is distributed in the hope that it will be useful, |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
14 | * Lesser General Public License for more details. |
15 | * |
16 | * You should have received a copy of the GNU Lesser General Public |
17 | * License along with FFmpeg; if not, write to the Free Software |
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
19 | */ |
20 | |
21 | /** |
22 | * @file |
23 | * pixdesc test filter |
24 | */ |
25 | |
26 | #include "libavutil/common.h" |
27 | #include "libavutil/pixdesc.h" |
28 | #include "avfilter.h" |
29 | #include "internal.h" |
30 | #include "video.h" |
31 | |
32 | typedef struct PixdescTestContext { |
33 | const AVPixFmtDescriptor *pix_desc; |
34 | uint16_t *line; |
35 | } PixdescTestContext; |
36 | |
37 | static av_cold void uninit(AVFilterContext *ctx) |
38 | { |
39 | PixdescTestContext *priv = ctx->priv; |
40 | av_freep(&priv->line); |
41 | } |
42 | |
43 | static int config_props(AVFilterLink *inlink) |
44 | { |
45 | PixdescTestContext *priv = inlink->dst->priv; |
46 | |
47 | priv->pix_desc = av_pix_fmt_desc_get(inlink->format); |
48 | |
49 | av_freep(&priv->line); |
50 | if (!(priv->line = av_malloc_array(sizeof(*priv->line), inlink->w))) |
51 | return AVERROR(ENOMEM); |
52 | |
53 | return 0; |
54 | } |
55 | |
56 | static int filter_frame(AVFilterLink *inlink, AVFrame *in) |
57 | { |
58 | PixdescTestContext *priv = inlink->dst->priv; |
59 | AVFilterLink *outlink = inlink->dst->outputs[0]; |
60 | AVFrame *out; |
61 | int i, c, w = inlink->w, h = inlink->h; |
62 | const int cw = AV_CEIL_RSHIFT(w, priv->pix_desc->log2_chroma_w); |
63 | const int ch = AV_CEIL_RSHIFT(h, priv->pix_desc->log2_chroma_h); |
64 | |
65 | out = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
66 | if (!out) { |
67 | av_frame_free(&in); |
68 | return AVERROR(ENOMEM); |
69 | } |
70 | |
71 | av_frame_copy_props(out, in); |
72 | |
73 | for (i = 0; i < 4; i++) { |
74 | const int h1 = i == 1 || i == 2 ? ch : h; |
75 | if (out->data[i]) { |
76 | uint8_t *data = out->data[i] + |
77 | (out->linesize[i] > 0 ? 0 : out->linesize[i] * (h1-1)); |
78 | memset(data, 0, FFABS(out->linesize[i]) * h1); |
79 | } |
80 | } |
81 | |
82 | /* copy palette */ |
83 | if (priv->pix_desc->flags & AV_PIX_FMT_FLAG_PAL || |
84 | priv->pix_desc->flags & AV_PIX_FMT_FLAG_PSEUDOPAL) |
85 | memcpy(out->data[1], in->data[1], AVPALETTE_SIZE); |
86 | |
87 | for (c = 0; c < priv->pix_desc->nb_components; c++) { |
88 | const int w1 = c == 1 || c == 2 ? cw : w; |
89 | const int h1 = c == 1 || c == 2 ? ch : h; |
90 | |
91 | for (i = 0; i < h1; i++) { |
92 | av_read_image_line(priv->line, |
93 | (void*)in->data, |
94 | in->linesize, |
95 | priv->pix_desc, |
96 | 0, i, c, w1, 0); |
97 | |
98 | av_write_image_line(priv->line, |
99 | out->data, |
100 | out->linesize, |
101 | priv->pix_desc, |
102 | 0, i, c, w1); |
103 | } |
104 | } |
105 | |
106 | av_frame_free(&in); |
107 | return ff_filter_frame(outlink, out); |
108 | } |
109 | |
110 | static const AVFilterPad avfilter_vf_pixdesctest_inputs[] = { |
111 | { |
112 | .name = "default", |
113 | .type = AVMEDIA_TYPE_VIDEO, |
114 | .filter_frame = filter_frame, |
115 | .config_props = config_props, |
116 | }, |
117 | { NULL } |
118 | }; |
119 | |
120 | static const AVFilterPad avfilter_vf_pixdesctest_outputs[] = { |
121 | { |
122 | .name = "default", |
123 | .type = AVMEDIA_TYPE_VIDEO, |
124 | }, |
125 | { NULL } |
126 | }; |
127 | |
128 | AVFilter ff_vf_pixdesctest = { |
129 | .name = "pixdesctest", |
130 | .description = NULL_IF_CONFIG_SMALL("Test pixel format definitions."), |
131 | .priv_size = sizeof(PixdescTestContext), |
132 | .uninit = uninit, |
133 | .inputs = avfilter_vf_pixdesctest_inputs, |
134 | .outputs = avfilter_vf_pixdesctest_outputs, |
135 | }; |
136 |