Commit | Line | Data |
---|---|---|
2ba45a60 DM |
1 | /* |
2 | * PNM image format | |
3 | * Copyright (c) 2002, 2003 Fabrice Bellard | |
4 | * | |
5 | * This file is part of FFmpeg. | |
6 | * | |
7 | * FFmpeg is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU Lesser General Public | |
9 | * License as published by the Free Software Foundation; either | |
10 | * version 2.1 of the License, or (at your option) any later version. | |
11 | * | |
12 | * FFmpeg is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * Lesser General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public | |
18 | * License along with FFmpeg; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
21 | ||
22 | #include "libavutil/pixdesc.h" | |
23 | #include "avcodec.h" | |
24 | #include "internal.h" | |
25 | ||
26 | static int pnm_encode_frame(AVCodecContext *avctx, AVPacket *pkt, | |
27 | const AVFrame *p, int *got_packet) | |
28 | { | |
29 | uint8_t *bytestream, *bytestream_start, *bytestream_end; | |
30 | int i, h, h1, c, n, linesize, ret; | |
31 | uint8_t *ptr, *ptr1, *ptr2; | |
32 | ||
33 | if ((ret = ff_alloc_packet2(avctx, pkt, avpicture_get_size(avctx->pix_fmt, | |
34 | avctx->width, | |
35 | avctx->height) + 200)) < 0) | |
36 | return ret; | |
37 | ||
38 | bytestream_start = | |
39 | bytestream = pkt->data; | |
40 | bytestream_end = pkt->data + pkt->size; | |
41 | ||
42 | h = avctx->height; | |
43 | h1 = h; | |
44 | switch (avctx->pix_fmt) { | |
45 | case AV_PIX_FMT_MONOWHITE: | |
46 | c = '4'; | |
47 | n = (avctx->width + 7) >> 3; | |
48 | break; | |
49 | case AV_PIX_FMT_GRAY8: | |
50 | c = '5'; | |
51 | n = avctx->width; | |
52 | break; | |
53 | case AV_PIX_FMT_GRAY16BE: | |
54 | c = '5'; | |
55 | n = avctx->width * 2; | |
56 | break; | |
57 | case AV_PIX_FMT_RGB24: | |
58 | c = '6'; | |
59 | n = avctx->width * 3; | |
60 | break; | |
61 | case AV_PIX_FMT_RGB48BE: | |
62 | c = '6'; | |
63 | n = avctx->width * 6; | |
64 | break; | |
65 | case AV_PIX_FMT_YUV420P: | |
66 | if (avctx->width & 1 || avctx->height & 1) { | |
67 | av_log(avctx, AV_LOG_ERROR, "pgmyuv needs even width and height\n"); | |
68 | return AVERROR(EINVAL); | |
69 | } | |
70 | c = '5'; | |
71 | n = avctx->width; | |
72 | h1 = (h * 3) / 2; | |
73 | break; | |
74 | case AV_PIX_FMT_YUV420P16BE: | |
75 | c = '5'; | |
76 | n = avctx->width * 2; | |
77 | h1 = (h * 3) / 2; | |
78 | break; | |
79 | default: | |
80 | return -1; | |
81 | } | |
82 | snprintf(bytestream, bytestream_end - bytestream, | |
83 | "P%c\n%d %d\n", c, avctx->width, h1); | |
84 | bytestream += strlen(bytestream); | |
85 | if (avctx->pix_fmt != AV_PIX_FMT_MONOWHITE) { | |
86 | int maxdepth = (1 << (av_pix_fmt_desc_get(avctx->pix_fmt)->comp[0].depth_minus1 + 1)) - 1; | |
87 | snprintf(bytestream, bytestream_end - bytestream, | |
88 | "%d\n", maxdepth); | |
89 | bytestream += strlen(bytestream); | |
90 | } | |
91 | ||
92 | ptr = p->data[0]; | |
93 | linesize = p->linesize[0]; | |
94 | for (i = 0; i < h; i++) { | |
95 | memcpy(bytestream, ptr, n); | |
96 | bytestream += n; | |
97 | ptr += linesize; | |
98 | } | |
99 | ||
100 | if (avctx->pix_fmt == AV_PIX_FMT_YUV420P || avctx->pix_fmt == AV_PIX_FMT_YUV420P16BE) { | |
101 | h >>= 1; | |
102 | n >>= 1; | |
103 | ptr1 = p->data[1]; | |
104 | ptr2 = p->data[2]; | |
105 | for (i = 0; i < h; i++) { | |
106 | memcpy(bytestream, ptr1, n); | |
107 | bytestream += n; | |
108 | memcpy(bytestream, ptr2, n); | |
109 | bytestream += n; | |
110 | ptr1 += p->linesize[1]; | |
111 | ptr2 += p->linesize[2]; | |
112 | } | |
113 | } | |
114 | pkt->size = bytestream - bytestream_start; | |
115 | pkt->flags |= AV_PKT_FLAG_KEY; | |
116 | *got_packet = 1; | |
117 | ||
118 | return 0; | |
119 | } | |
120 | ||
121 | static av_cold int pnm_encode_init(AVCodecContext *avctx) | |
122 | { | |
123 | avctx->coded_frame = av_frame_alloc(); | |
124 | if (!avctx->coded_frame) | |
125 | return AVERROR(ENOMEM); | |
126 | ||
127 | avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I; | |
128 | avctx->coded_frame->key_frame = 1; | |
129 | ||
130 | return 0; | |
131 | } | |
132 | ||
133 | static av_cold int pnm_encode_close(AVCodecContext *avctx) | |
134 | { | |
135 | av_frame_free(&avctx->coded_frame); | |
136 | return 0; | |
137 | } | |
138 | ||
139 | #if CONFIG_PGM_ENCODER | |
140 | AVCodec ff_pgm_encoder = { | |
141 | .name = "pgm", | |
142 | .long_name = NULL_IF_CONFIG_SMALL("PGM (Portable GrayMap) image"), | |
143 | .type = AVMEDIA_TYPE_VIDEO, | |
144 | .id = AV_CODEC_ID_PGM, | |
145 | .init = pnm_encode_init, | |
146 | .close = pnm_encode_close, | |
147 | .encode2 = pnm_encode_frame, | |
148 | .pix_fmts = (const enum AVPixelFormat[]){ | |
149 | AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY16BE, AV_PIX_FMT_NONE | |
150 | }, | |
151 | }; | |
152 | #endif | |
153 | ||
154 | #if CONFIG_PGMYUV_ENCODER | |
155 | AVCodec ff_pgmyuv_encoder = { | |
156 | .name = "pgmyuv", | |
157 | .long_name = NULL_IF_CONFIG_SMALL("PGMYUV (Portable GrayMap YUV) image"), | |
158 | .type = AVMEDIA_TYPE_VIDEO, | |
159 | .id = AV_CODEC_ID_PGMYUV, | |
160 | .init = pnm_encode_init, | |
161 | .close = pnm_encode_close, | |
162 | .encode2 = pnm_encode_frame, | |
163 | .pix_fmts = (const enum AVPixelFormat[]){ | |
164 | AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV420P16BE, AV_PIX_FMT_NONE | |
165 | }, | |
166 | }; | |
167 | #endif | |
168 | ||
169 | #if CONFIG_PPM_ENCODER | |
170 | AVCodec ff_ppm_encoder = { | |
171 | .name = "ppm", | |
172 | .long_name = NULL_IF_CONFIG_SMALL("PPM (Portable PixelMap) image"), | |
173 | .type = AVMEDIA_TYPE_VIDEO, | |
174 | .id = AV_CODEC_ID_PPM, | |
175 | .init = pnm_encode_init, | |
176 | .close = pnm_encode_close, | |
177 | .encode2 = pnm_encode_frame, | |
178 | .pix_fmts = (const enum AVPixelFormat[]){ | |
179 | AV_PIX_FMT_RGB24, AV_PIX_FMT_RGB48BE, AV_PIX_FMT_NONE | |
180 | }, | |
181 | }; | |
182 | #endif | |
183 | ||
184 | #if CONFIG_PBM_ENCODER | |
185 | AVCodec ff_pbm_encoder = { | |
186 | .name = "pbm", | |
187 | .long_name = NULL_IF_CONFIG_SMALL("PBM (Portable BitMap) image"), | |
188 | .type = AVMEDIA_TYPE_VIDEO, | |
189 | .id = AV_CODEC_ID_PBM, | |
190 | .init = pnm_encode_init, | |
191 | .close = pnm_encode_close, | |
192 | .encode2 = pnm_encode_frame, | |
193 | .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_MONOWHITE, | |
194 | AV_PIX_FMT_NONE }, | |
195 | }; | |
196 | #endif |