p*menc: use the AVFrame API properly.
[libav.git] / libavcodec / pnmenc.c
1 /*
2 * PNM image format
3 * Copyright (c) 2002, 2003 Fabrice Bellard
4 *
5 * This file is part of Libav.
6 *
7 * Libav 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 * Libav 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 Libav; 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 "bytestream.h"
25 #include "internal.h"
26
27 static int pnm_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
28 const AVFrame *pict, int *got_packet)
29 {
30 uint8_t *bytestream, *bytestream_start, *bytestream_end;
31 const AVFrame * const p = pict;
32 int i, h, h1, c, n, linesize, ret;
33 uint8_t *ptr, *ptr1, *ptr2;
34
35 if ((ret = ff_alloc_packet(pkt, avpicture_get_size(avctx->pix_fmt,
36 avctx->width,
37 avctx->height) + 200)) < 0) {
38 av_log(avctx, AV_LOG_ERROR, "encoded frame too large\n");
39 return ret;
40 }
41
42 bytestream_start =
43 bytestream = pkt->data;
44 bytestream_end = pkt->data + pkt->size;
45
46 h = avctx->height;
47 h1 = h;
48 switch (avctx->pix_fmt) {
49 case AV_PIX_FMT_MONOWHITE:
50 c = '4';
51 n = (avctx->width + 7) >> 3;
52 break;
53 case AV_PIX_FMT_GRAY8:
54 c = '5';
55 n = avctx->width;
56 break;
57 case AV_PIX_FMT_GRAY16BE:
58 c = '5';
59 n = avctx->width * 2;
60 break;
61 case AV_PIX_FMT_RGB24:
62 c = '6';
63 n = avctx->width * 3;
64 break;
65 case AV_PIX_FMT_RGB48BE:
66 c = '6';
67 n = avctx->width * 6;
68 break;
69 case AV_PIX_FMT_YUV420P:
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