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Diffstat (limited to 'ffmpeg1/libavcodec/pcxenc.c')
-rw-r--r--ffmpeg1/libavcodec/pcxenc.c230
1 files changed, 0 insertions, 230 deletions
diff --git a/ffmpeg1/libavcodec/pcxenc.c b/ffmpeg1/libavcodec/pcxenc.c
deleted file mode 100644
index 7cb3af3..0000000
--- a/ffmpeg1/libavcodec/pcxenc.c
+++ /dev/null
@@ -1,230 +0,0 @@
-/*
- * PC Paintbrush PCX (.pcx) image encoder
- * Copyright (c) 2009 Daniel Verkamp <daniel at drv.nu>
- *
- * 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
- */
-
-/**
- * @file
- * PCX image encoder
- * @author Daniel Verkamp
- * @see http://www.qzx.com/pc-gpe/pcx.txt
- */
-
-#include "avcodec.h"
-#include "bytestream.h"
-#include "libavutil/imgutils.h"
-#include "internal.h"
-
-typedef struct PCXContext {
- AVFrame picture;
-} PCXContext;
-
-static const uint32_t monoblack_pal[16] = { 0x000000, 0xFFFFFF };
-
-static av_cold int pcx_encode_init(AVCodecContext *avctx)
-{
- PCXContext *s = avctx->priv_data;
-
- avcodec_get_frame_defaults(&s->picture);
- avctx->coded_frame = &s->picture;
-
- return 0;
-}
-
-/**
- * PCX run-length encoder
- * @param dst output buffer
- * @param dst_size size of output buffer
- * @param src input buffer
- * @param src_plane_size size of one plane of input buffer in bytes
- * @param nplanes number of planes in input buffer
- * @return number of bytes written to dst or -1 on error
- * @bug will not work for nplanes != 1 && bpp != 8
- */
-static int pcx_rle_encode( uint8_t *dst, int dst_size,
- const uint8_t *src, int src_plane_size, int nplanes)
-{
- int p;
- const uint8_t *dst_start = dst;
-
- // check worst-case upper bound on dst_size
- if (dst_size < 2LL * src_plane_size * nplanes || src_plane_size <= 0)
- return -1;
-
- for (p = 0; p < nplanes; p++) {
- int count = 1;
- const uint8_t *src_plane = src + p;
- const uint8_t *src_plane_end = src_plane + src_plane_size * nplanes;
- uint8_t prev = *src_plane;
- src_plane += nplanes;
-
- for (; ; src_plane += nplanes) {
- if (src_plane < src_plane_end && *src_plane == prev && count < 0x3F) {
- // current byte is same as prev
- ++count;
- } else {
- // output prev * count
- if (count != 1 || prev >= 0xC0)
- *dst++ = 0xC0 | count;
- *dst++ = prev;
-
- if (src_plane == src_plane_end)
- break;
-
- // start new run
- count = 1;
- prev = *src_plane;
- }
- }
- }
-
- return dst - dst_start;
-}
-
-static int pcx_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
- const AVFrame *frame, int *got_packet)
-{
- PCXContext *s = avctx->priv_data;
- AVFrame *const pict = &s->picture;
- const uint8_t *buf_end;
- uint8_t *buf;
-
- int bpp, nplanes, i, y, line_bytes, written, ret, max_pkt_size, sw, sh;
- const uint32_t *pal = NULL;
- uint32_t palette256[256];
- const uint8_t *src;
-
- *pict = *frame;
- pict->pict_type = AV_PICTURE_TYPE_I;
- pict->key_frame = 1;
-
- if (avctx->width > 65535 || avctx->height > 65535) {
- av_log(avctx, AV_LOG_ERROR, "image dimensions do not fit in 16 bits\n");
- return -1;
- }
-
- switch (avctx->pix_fmt) {
- case AV_PIX_FMT_RGB24:
- bpp = 8;
- nplanes = 3;
- break;
- case AV_PIX_FMT_RGB8:
- case AV_PIX_FMT_BGR8:
- case AV_PIX_FMT_RGB4_BYTE:
- case AV_PIX_FMT_BGR4_BYTE:
- case AV_PIX_FMT_GRAY8:
- bpp = 8;
- nplanes = 1;
- avpriv_set_systematic_pal2(palette256, avctx->pix_fmt);
- pal = palette256;
- break;
- case AV_PIX_FMT_PAL8:
- bpp = 8;
- nplanes = 1;
- pal = (uint32_t *)pict->data[1];
- break;
- case AV_PIX_FMT_MONOBLACK:
- bpp = 1;
- nplanes = 1;
- pal = monoblack_pal;
- break;
- default:
- av_log(avctx, AV_LOG_ERROR, "unsupported pixfmt\n");
- return -1;
- }
-
- line_bytes = (avctx->width * bpp + 7) >> 3;
- line_bytes = (line_bytes + 1) & ~1;
-
- max_pkt_size = 128 + avctx->height * 2 * line_bytes * nplanes + (pal ? 256*3 + 1 : 0);
- if ((ret = ff_alloc_packet2(avctx, pkt, max_pkt_size)) < 0)
- return ret;
- buf = pkt->data;
- buf_end = pkt->data + pkt->size;
-
- sw = avctx->sample_aspect_ratio.num;
- sh = avctx->sample_aspect_ratio.den;
- if (sw > 0xFFFFu || sh > 0xFFFFu)
- av_reduce(&sw, &sh, sw, sh, 0xFFFFu);
-
- bytestream_put_byte(&buf, 10); // manufacturer
- bytestream_put_byte(&buf, 5); // version
- bytestream_put_byte(&buf, 1); // encoding
- bytestream_put_byte(&buf, bpp); // bits per pixel per plane
- bytestream_put_le16(&buf, 0); // x min
- bytestream_put_le16(&buf, 0); // y min
- bytestream_put_le16(&buf, avctx->width - 1); // x max
- bytestream_put_le16(&buf, avctx->height - 1); // y max
- bytestream_put_le16(&buf, sw); // horizontal DPI
- bytestream_put_le16(&buf, sh); // vertical DPI
- for (i = 0; i < 16; i++)
- bytestream_put_be24(&buf, pal ? pal[i] : 0);// palette (<= 16 color only)
- bytestream_put_byte(&buf, 0); // reserved
- bytestream_put_byte(&buf, nplanes); // number of planes
- bytestream_put_le16(&buf, line_bytes); // scanline plane size in bytes
-
- while (buf - pkt->data < 128)
- *buf++= 0;
-
- src = pict->data[0];
-
- for (y = 0; y < avctx->height; y++) {
- if ((written = pcx_rle_encode(buf, buf_end - buf,
- src, line_bytes, nplanes)) < 0) {
- av_log(avctx, AV_LOG_ERROR, "buffer too small\n");
- return -1;
- }
- buf += written;
- src += pict->linesize[0];
- }
-
- if (nplanes == 1 && bpp == 8) {
- if (buf_end - buf < 257) {
- av_log(avctx, AV_LOG_ERROR, "buffer too small\n");
- return -1;
- }
- bytestream_put_byte(&buf, 12);
- for (i = 0; i < 256; i++) {
- bytestream_put_be24(&buf, pal[i]);
- }
- }
-
- pkt->size = buf - pkt->data;
- pkt->flags |= AV_PKT_FLAG_KEY;
- *got_packet = 1;
-
- return 0;
-}
-
-AVCodec ff_pcx_encoder = {
- .name = "pcx",
- .type = AVMEDIA_TYPE_VIDEO,
- .id = AV_CODEC_ID_PCX,
- .priv_data_size = sizeof(PCXContext),
- .init = pcx_encode_init,
- .encode2 = pcx_encode_frame,
- .pix_fmts = (const enum AVPixelFormat[]){
- AV_PIX_FMT_RGB24,
- AV_PIX_FMT_RGB8, AV_PIX_FMT_BGR8, AV_PIX_FMT_RGB4_BYTE, AV_PIX_FMT_BGR4_BYTE,
- AV_PIX_FMT_GRAY8, AV_PIX_FMT_PAL8,
- AV_PIX_FMT_MONOBLACK,
- AV_PIX_FMT_NONE
- },
- .long_name = NULL_IF_CONFIG_SMALL("PC Paintbrush PCX image"),
-};
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