[deb_ffmpeg.git] / ffmpeg / libavcodec / pnmenc.c

/*
 * PNM image format
 * Copyright (c) 2002, 2003 Fabrice Bellard
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include "libavutil/pixdesc.h"
#include "avcodec.h"
#include "internal.h"

static int pnm_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
                            const AVFrame *p, int *got_packet)
{
    uint8_t *bytestream, *bytestream_start, *bytestream_end;
    int i, h, h1, c, n, linesize, ret;
    uint8_t *ptr, *ptr1, *ptr2;

    if ((ret = ff_alloc_packet2(avctx, pkt, avpicture_get_size(avctx->pix_fmt,
                                                       avctx->width,
                                                       avctx->height) + 200)) < 0)
        return ret;

    bytestream_start =
    bytestream       = pkt->data;
    bytestream_end   = pkt->data + pkt->size;

    h  = avctx->height;
    h1 = h;
    switch (avctx->pix_fmt) {
    case AV_PIX_FMT_MONOWHITE:
        c  = '4';
        n  = (avctx->width + 7) >> 3;
        break;
    case AV_PIX_FMT_GRAY8:
        c  = '5';
        n  = avctx->width;
        break;
    case AV_PIX_FMT_GRAY16BE:
        c  = '5';
        n  = avctx->width * 2;
        break;
    case AV_PIX_FMT_RGB24:
        c  = '6';
        n  = avctx->width * 3;
        break;
    case AV_PIX_FMT_RGB48BE:
        c  = '6';
        n  = avctx->width * 6;
        break;
    case AV_PIX_FMT_YUV420P:
        if (avctx->width & 1 || avctx->height & 1) {
            av_log(avctx, AV_LOG_ERROR, "pgmyuv needs even width and height\n");
            return AVERROR(EINVAL);
        }
        c  = '5';
        n  = avctx->width;
        h1 = (h * 3) / 2;
        break;
    case AV_PIX_FMT_YUV420P16BE:
        c  = '5';
        n  = avctx->width * 2;
        h1 = (h * 3) / 2;
        break;
    default:
        return -1;
    }
    snprintf(bytestream, bytestream_end - bytestream,
             "P%c\n%d %d\n", c, avctx->width, h1);
    bytestream += strlen(bytestream);
    if (avctx->pix_fmt != AV_PIX_FMT_MONOWHITE) {
        int maxdepth = (1 << (av_pix_fmt_desc_get(avctx->pix_fmt)->comp[0].depth_minus1 + 1)) - 1;
        snprintf(bytestream, bytestream_end - bytestream,
                 "%d\n", maxdepth);
        bytestream += strlen(bytestream);
    }

    ptr      = p->data[0];
    linesize = p->linesize[0];
    for (i = 0; i < h; i++) {
        memcpy(bytestream, ptr, n);
        bytestream += n;
        ptr        += linesize;
    }

    if (avctx->pix_fmt == AV_PIX_FMT_YUV420P || avctx->pix_fmt == AV_PIX_FMT_YUV420P16BE) {
        h >>= 1;
        n >>= 1;
        ptr1 = p->data[1];
        ptr2 = p->data[2];
        for (i = 0; i < h; i++) {
            memcpy(bytestream, ptr1, n);
            bytestream += n;
            memcpy(bytestream, ptr2, n);
            bytestream += n;
                ptr1 += p->linesize[1];
                ptr2 += p->linesize[2];
        }
    }
    pkt->size   = bytestream - bytestream_start;
    pkt->flags |= AV_PKT_FLAG_KEY;
    *got_packet = 1;

    return 0;
}

static av_cold int pnm_encode_init(AVCodecContext *avctx)
{
    avctx->coded_frame = av_frame_alloc();
    if (!avctx->coded_frame)
        return AVERROR(ENOMEM);

    avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
    avctx->coded_frame->key_frame = 1;

    return 0;
}

static av_cold int pnm_encode_close(AVCodecContext *avctx)
{
    av_frame_free(&avctx->coded_frame);
    return 0;
}

#if CONFIG_PGM_ENCODER
AVCodec ff_pgm_encoder = {
    .name           = "pgm",
    .long_name      = NULL_IF_CONFIG_SMALL("PGM (Portable GrayMap) image"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_PGM,
    .init           = pnm_encode_init,
    .close          = pnm_encode_close,
    .encode2        = pnm_encode_frame,
    .pix_fmts       = (const enum AVPixelFormat[]){
        AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY16BE, AV_PIX_FMT_NONE
    },
};
#endif

#if CONFIG_PGMYUV_ENCODER
AVCodec ff_pgmyuv_encoder = {
    .name           = "pgmyuv",
    .long_name      = NULL_IF_CONFIG_SMALL("PGMYUV (Portable GrayMap YUV) image"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_PGMYUV,
    .init           = pnm_encode_init,
    .close          = pnm_encode_close,
    .encode2        = pnm_encode_frame,
    .pix_fmts       = (const enum AVPixelFormat[]){
        AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV420P16BE, AV_PIX_FMT_NONE
    },
};
#endif

#if CONFIG_PPM_ENCODER
AVCodec ff_ppm_encoder = {
    .name           = "ppm",
    .long_name      = NULL_IF_CONFIG_SMALL("PPM (Portable PixelMap) image"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_PPM,
    .init           = pnm_encode_init,
    .close          = pnm_encode_close,
    .encode2        = pnm_encode_frame,
    .pix_fmts       = (const enum AVPixelFormat[]){
        AV_PIX_FMT_RGB24, AV_PIX_FMT_RGB48BE, AV_PIX_FMT_NONE
    },
};
#endif

#if CONFIG_PBM_ENCODER
AVCodec ff_pbm_encoder = {
    .name           = "pbm",
    .long_name      = NULL_IF_CONFIG_SMALL("PBM (Portable BitMap) image"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_PBM,
    .init           = pnm_encode_init,
    .close          = pnm_encode_close,
    .encode2        = pnm_encode_frame,
    .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_MONOWHITE,
                                                  AV_PIX_FMT_NONE },
};
#endif
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