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Diffstat (limited to 'ffmpeg/libavcodec/targaenc.c')
-rw-r--r--ffmpeg/libavcodec/targaenc.c203
1 files changed, 0 insertions, 203 deletions
diff --git a/ffmpeg/libavcodec/targaenc.c b/ffmpeg/libavcodec/targaenc.c
deleted file mode 100644
index d4483ec..0000000
--- a/ffmpeg/libavcodec/targaenc.c
+++ /dev/null
@@ -1,203 +0,0 @@
-/*
- * Targa (.tga) image encoder
- * Copyright (c) 2007 Bobby Bingham
- *
- * 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 <string.h>
-
-#include "libavutil/internal.h"
-#include "libavutil/intreadwrite.h"
-#include "libavutil/pixdesc.h"
-#include "avcodec.h"
-#include "internal.h"
-#include "rle.h"
-#include "targa.h"
-
-/**
- * RLE compress the image, with maximum size of out_size
- * @param outbuf Output buffer
- * @param out_size Maximum output size
- * @param pic Image to compress
- * @param bpp Bytes per pixel
- * @param w Image width
- * @param h Image height
- * @return Size of output in bytes, or -1 if larger than out_size
- */
-static int targa_encode_rle(uint8_t *outbuf, int out_size, const AVFrame *pic,
- int bpp, int w, int h)
-{
- int y,ret;
- uint8_t *out;
-
- out = outbuf;
-
- for(y = 0; y < h; y ++) {
- ret = ff_rle_encode(out, out_size, pic->data[0] + pic->linesize[0] * y, bpp, w, 0x7f, 0, -1, 0);
- if(ret == -1){
- return -1;
- }
- out+= ret;
- out_size -= ret;
- }
-
- return out - outbuf;
-}
-
-static int targa_encode_normal(uint8_t *outbuf, const AVFrame *pic, int bpp, int w, int h)
-{
- int i, n = bpp * w;
- uint8_t *out = outbuf;
- uint8_t *ptr = pic->data[0];
-
- for(i=0; i < h; i++) {
- memcpy(out, ptr, n);
- out += n;
- ptr += pic->linesize[0];
- }
-
- return out - outbuf;
-}
-
-static int targa_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
- const AVFrame *p, int *got_packet)
-{
- int bpp, picsize, datasize = -1, ret, i;
- uint8_t *out;
-
- if(avctx->width > 0xffff || avctx->height > 0xffff) {
- av_log(avctx, AV_LOG_ERROR, "image dimensions too large\n");
- return AVERROR(EINVAL);
- }
- picsize = avpicture_get_size(avctx->pix_fmt, avctx->width, avctx->height);
- if ((ret = ff_alloc_packet2(avctx, pkt, picsize + 45)) < 0)
- return ret;
-
- /* zero out the header and only set applicable fields */
- memset(pkt->data, 0, 12);
- AV_WL16(pkt->data+12, avctx->width);
- AV_WL16(pkt->data+14, avctx->height);
- /* image descriptor byte: origin is always top-left, bits 0-3 specify alpha */
- pkt->data[17] = 0x20 | (avctx->pix_fmt == AV_PIX_FMT_BGRA ? 8 : 0);
-
- out = pkt->data + 18; /* skip past the header we write */
-
- avctx->bits_per_coded_sample = av_get_bits_per_pixel(av_pix_fmt_desc_get(avctx->pix_fmt));
- switch(avctx->pix_fmt) {
- case AV_PIX_FMT_PAL8: {
- int pal_bpp = 24; /* Only write 32bit palette if there is transparency information */
- for (i = 0; i < 256; i++)
- if (AV_RN32(p->data[1] + 4 * i) >> 24 != 0xFF) {
- pal_bpp = 32;
- break;
- }
- pkt->data[1] = 1; /* palette present */
- pkt->data[2] = TGA_PAL; /* uncompressed palettised image */
- pkt->data[6] = 1; /* palette contains 256 entries */
- pkt->data[7] = pal_bpp; /* palette contains pal_bpp bit entries */
- pkt->data[16] = 8; /* bpp */
- for (i = 0; i < 256; i++)
- if (pal_bpp == 32) {
- AV_WL32(pkt->data + 18 + 4 * i, *(uint32_t *)(p->data[1] + i * 4));
- } else {
- AV_WL24(pkt->data + 18 + 3 * i, *(uint32_t *)(p->data[1] + i * 4));
- }
- out += 32 * pal_bpp; /* skip past the palette we just output */
- break;
- }
- case AV_PIX_FMT_GRAY8:
- pkt->data[2] = TGA_BW; /* uncompressed grayscale image */
- avctx->bits_per_coded_sample = 0x28;
- pkt->data[16] = 8; /* bpp */
- break;
- case AV_PIX_FMT_RGB555LE:
- pkt->data[2] = TGA_RGB; /* uncompressed true-color image */
- avctx->bits_per_coded_sample =
- pkt->data[16] = 16; /* bpp */
- break;
- case AV_PIX_FMT_BGR24:
- pkt->data[2] = TGA_RGB; /* uncompressed true-color image */
- pkt->data[16] = 24; /* bpp */
- break;
- case AV_PIX_FMT_BGRA:
- pkt->data[2] = TGA_RGB; /* uncompressed true-color image */
- pkt->data[16] = 32; /* bpp */
- break;
- default:
- av_log(avctx, AV_LOG_ERROR, "Pixel format '%s' not supported.\n",
- av_get_pix_fmt_name(avctx->pix_fmt));
- return AVERROR(EINVAL);
- }
- bpp = pkt->data[16] >> 3;
-
- /* try RLE compression */
- if (avctx->coder_type != FF_CODER_TYPE_RAW)
- datasize = targa_encode_rle(out, picsize, p, bpp, avctx->width, avctx->height);
-
- /* if that worked well, mark the picture as RLE compressed */
- if(datasize >= 0)
- pkt->data[2] |= TGA_RLE;
-
- /* if RLE didn't make it smaller, go back to no compression */
- else datasize = targa_encode_normal(out, p, bpp, avctx->width, avctx->height);
-
- out += datasize;
-
- /* The standard recommends including this section, even if we don't use
- * any of the features it affords. TODO: take advantage of the pixel
- * aspect ratio and encoder ID fields available? */
- memcpy(out, "\0\0\0\0\0\0\0\0TRUEVISION-XFILE.", 26);
-
- pkt->size = out + 26 - pkt->data;
- pkt->flags |= AV_PKT_FLAG_KEY;
- *got_packet = 1;
-
- return 0;
-}
-
-static av_cold int targa_encode_init(AVCodecContext *avctx)
-{
- avctx->coded_frame = av_frame_alloc();
- if (!avctx->coded_frame)
- return AVERROR(ENOMEM);
-
- avctx->coded_frame->key_frame = 1;
- avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
-
- return 0;
-}
-
-static av_cold int targa_encode_close(AVCodecContext *avctx)
-{
- av_frame_free(&avctx->coded_frame);
- return 0;
-}
-
-AVCodec ff_targa_encoder = {
- .name = "targa",
- .long_name = NULL_IF_CONFIG_SMALL("Truevision Targa image"),
- .type = AVMEDIA_TYPE_VIDEO,
- .id = AV_CODEC_ID_TARGA,
- .init = targa_encode_init,
- .close = targa_encode_close,
- .encode2 = targa_encode_frame,
- .pix_fmts = (const enum AVPixelFormat[]){
- AV_PIX_FMT_BGR24, AV_PIX_FMT_BGRA, AV_PIX_FMT_RGB555LE, AV_PIX_FMT_GRAY8, AV_PIX_FMT_PAL8,
- AV_PIX_FMT_NONE
- },
-};
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