p*menc: use the AVFrame API properly.
[libav.git] / libavcodec / pnmenc.c
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1/*
2 * PNM image format
406792e7 3 * Copyright (c) 2002, 2003 Fabrice Bellard
9ac2e797 4 *
2912e87a 5 * This file is part of Libav.
9ac2e797 6 *
2912e87a 7 * Libav is free software; you can redistribute it and/or
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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 *
2912e87a 12 * Libav is distributed in the hope that it will be useful,
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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
2912e87a 18 * License along with Libav; if not, write to the Free Software
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19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
d3067047 21
b5f536d2 22#include "libavutil/pixdesc.h"
9ac2e797 23#include "avcodec.h"
2c124cb6 24#include "bytestream.h"
1ea57550 25#include "internal.h"
9ac2e797 26
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27static int pnm_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
28 const AVFrame *pict, int *got_packet)
d3067047 29{
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30 uint8_t *bytestream, *bytestream_start, *bytestream_end;
31 const AVFrame * const p = pict;
1ea57550 32 int i, h, h1, c, n, linesize, ret;
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33 uint8_t *ptr, *ptr1, *ptr2;
34
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35 if ((ret = ff_alloc_packet(pkt, avpicture_get_size(avctx->pix_fmt,
36 avctx->width,
37 avctx->height) + 200)) < 0) {
9ac2e797 38 av_log(avctx, AV_LOG_ERROR, "encoded frame too large\n");
1ea57550 39 return ret;
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40 }
41
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42 bytestream_start =
43 bytestream = pkt->data;
44 bytestream_end = pkt->data + pkt->size;
9ac2e797 45
d3067047 46 h = avctx->height;
9ac2e797 47 h1 = h;
d3067047 48 switch (avctx->pix_fmt) {
716d413c 49 case AV_PIX_FMT_MONOWHITE:
d3067047
DB
50 c = '4';
51 n = (avctx->width + 7) >> 3;
9ac2e797 52 break;
716d413c 53 case AV_PIX_FMT_GRAY8:
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DB
54 c = '5';
55 n = avctx->width;
9ac2e797 56 break;
716d413c 57 case AV_PIX_FMT_GRAY16BE:
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DB
58 c = '5';
59 n = avctx->width * 2;
9ac2e797 60 break;
716d413c 61 case AV_PIX_FMT_RGB24:
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DB
62 c = '6';
63 n = avctx->width * 3;
9ac2e797 64 break;
716d413c 65 case AV_PIX_FMT_RGB48BE:
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66 c = '6';
67 n = avctx->width * 6;
00182190 68 break;
716d413c 69 case AV_PIX_FMT_YUV420P:
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DB
70 c = '5';
71 n = avctx->width;
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72 h1 = (h * 3) / 2;
73 break;
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74 case AV_PIX_FMT_YUV420P16BE:
75 c = '5';
76 n = avctx->width * 2;
77 h1 = (h * 3) / 2;
78 break;
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79 default:
80 return -1;
81 }
afa21a12 82 snprintf(bytestream, bytestream_end - bytestream,
d3067047 83 "P%c\n%d %d\n", c, avctx->width, h1);
afa21a12 84 bytestream += strlen(bytestream);
716d413c 85 if (avctx->pix_fmt != AV_PIX_FMT_MONOWHITE) {
86611ff1 86 int maxdepth = (1 << (av_pix_fmt_desc_get(avctx->pix_fmt)->comp[0].depth_minus1 + 1)) - 1;
afa21a12 87 snprintf(bytestream, bytestream_end - bytestream,
b5f536d2 88 "%d\n", maxdepth);
afa21a12 89 bytestream += strlen(bytestream);
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90 }
91
d3067047 92 ptr = p->data[0];
9ac2e797 93 linesize = p->linesize[0];
d3067047 94 for (i = 0; i < h; i++) {
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95 memcpy(bytestream, ptr, n);
96 bytestream += n;
97 ptr += linesize;
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98 }
99
b5f536d2 100 if (avctx->pix_fmt == AV_PIX_FMT_YUV420P || avctx->pix_fmt == AV_PIX_FMT_YUV420P16BE) {
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101 h >>= 1;
102 n >>= 1;
103 ptr1 = p->data[1];
104 ptr2 = p->data[2];
d3067047 105 for (i = 0; i < h; i++) {
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106 memcpy(bytestream, ptr1, n);
107 bytestream += n;
108 memcpy(bytestream, ptr2, n);
109 bytestream += n;
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110 ptr1 += p->linesize[1];
111 ptr2 += p->linesize[2];
112 }
113 }
afa21a12 114 pkt->size = bytestream - bytestream_start;
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115 pkt->flags |= AV_PKT_FLAG_KEY;
116 *got_packet = 1;
117
118 return 0;
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119}
120
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121static 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
133static av_cold int pnm_encode_close(AVCodecContext *avctx)
134{
135 av_frame_free(&avctx->coded_frame);
136 return 0;
137}
9ac2e797 138
b250f9c6 139#if CONFIG_PGM_ENCODER
d36beb3f 140AVCodec ff_pgm_encoder = {
ec6402b7 141 .name = "pgm",
b2bed932 142 .long_name = NULL_IF_CONFIG_SMALL("PGM (Portable GrayMap) image"),
ec6402b7 143 .type = AVMEDIA_TYPE_VIDEO,
36ef5369 144 .id = AV_CODEC_ID_PGM,
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145 .init = pnm_encode_init,
146 .close = pnm_encode_close,
1ea57550 147 .encode2 = pnm_encode_frame,
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148 .pix_fmts = (const enum AVPixelFormat[]){
149 AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY16BE, AV_PIX_FMT_NONE
00c3b67b 150 },
9ac2e797 151};
d3067047 152#endif
9ac2e797 153
b250f9c6 154#if CONFIG_PGMYUV_ENCODER
d36beb3f 155AVCodec ff_pgmyuv_encoder = {
ec6402b7 156 .name = "pgmyuv",
b2bed932 157 .long_name = NULL_IF_CONFIG_SMALL("PGMYUV (Portable GrayMap YUV) image"),
ec6402b7 158 .type = AVMEDIA_TYPE_VIDEO,
36ef5369 159 .id = AV_CODEC_ID_PGMYUV,
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160 .init = pnm_encode_init,
161 .close = pnm_encode_close,
1ea57550 162 .encode2 = pnm_encode_frame,
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163 .pix_fmts = (const enum AVPixelFormat[]){
164 AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV420P16BE, AV_PIX_FMT_NONE
165 },
9ac2e797 166};
d3067047 167#endif
9ac2e797 168
b250f9c6 169#if CONFIG_PPM_ENCODER
d36beb3f 170AVCodec ff_ppm_encoder = {
ec6402b7 171 .name = "ppm",
b2bed932 172 .long_name = NULL_IF_CONFIG_SMALL("PPM (Portable PixelMap) image"),
ec6402b7 173 .type = AVMEDIA_TYPE_VIDEO,
36ef5369 174 .id = AV_CODEC_ID_PPM,
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175 .init = pnm_encode_init,
176 .close = pnm_encode_close,
1ea57550 177 .encode2 = pnm_encode_frame,
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178 .pix_fmts = (const enum AVPixelFormat[]){
179 AV_PIX_FMT_RGB24, AV_PIX_FMT_RGB48BE, AV_PIX_FMT_NONE
00c3b67b 180 },
9ac2e797 181};
d3067047 182#endif
9ac2e797 183
b250f9c6 184#if CONFIG_PBM_ENCODER
d36beb3f 185AVCodec ff_pbm_encoder = {
ec6402b7 186 .name = "pbm",
b2bed932 187 .long_name = NULL_IF_CONFIG_SMALL("PBM (Portable BitMap) image"),
ec6402b7 188 .type = AVMEDIA_TYPE_VIDEO,
36ef5369 189 .id = AV_CODEC_ID_PBM,
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190 .init = pnm_encode_init,
191 .close = pnm_encode_close,
1ea57550 192 .encode2 = pnm_encode_frame,
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193 .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_MONOWHITE,
194 AV_PIX_FMT_NONE },
9ac2e797 195};
d3067047 196#endif