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Diffstat (limited to 'ffmpeg/libavcodec/sgienc.c')
-rw-r--r--ffmpeg/libavcodec/sgienc.c226
1 files changed, 0 insertions, 226 deletions
diff --git a/ffmpeg/libavcodec/sgienc.c b/ffmpeg/libavcodec/sgienc.c
deleted file mode 100644
index 0e4f304..0000000
--- a/ffmpeg/libavcodec/sgienc.c
+++ /dev/null
@@ -1,226 +0,0 @@
-/*
- * SGI image encoder
- * Todd Kirby <doubleshot@pacbell.net>
- *
- * 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 "avcodec.h"
-#include "bytestream.h"
-#include "internal.h"
-#include "sgi.h"
-#include "rle.h"
-
-#define SGI_SINGLE_CHAN 2
-#define SGI_MULTI_CHAN 3
-
-static av_cold int encode_init(AVCodecContext *avctx)
-{
- if (avctx->width > 65535 || avctx->height > 65535) {
- av_log(avctx, AV_LOG_ERROR, "SGI does not support resolutions above 65535x65535\n");
- return -1;
- }
- avctx->coded_frame = av_frame_alloc();
- if (!avctx->coded_frame)
- return AVERROR(ENOMEM);
-
- return 0;
-}
-
-static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
- const AVFrame *frame, int *got_packet)
-{
- const AVFrame * const p = frame;
- uint8_t *offsettab, *lengthtab, *in_buf, *encode_buf, *buf;
- int x, y, z, length, tablesize, ret;
- unsigned int width, height, depth, dimension, bytes_per_channel, pixmax, put_be;
- unsigned char *end_buf;
-
- avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
- avctx->coded_frame->key_frame = 1;
-
- width = avctx->width;
- height = avctx->height;
- bytes_per_channel = 1;
- pixmax = 0xFF;
- put_be = HAVE_BIGENDIAN;
-
- switch (avctx->pix_fmt) {
- case AV_PIX_FMT_GRAY8:
- dimension = SGI_SINGLE_CHAN;
- depth = SGI_GRAYSCALE;
- break;
- case AV_PIX_FMT_RGB24:
- dimension = SGI_MULTI_CHAN;
- depth = SGI_RGB;
- break;
- case AV_PIX_FMT_RGBA:
- dimension = SGI_MULTI_CHAN;
- depth = SGI_RGBA;
- break;
- case AV_PIX_FMT_GRAY16LE:
- put_be = !HAVE_BIGENDIAN;
- case AV_PIX_FMT_GRAY16BE:
- avctx->coder_type = FF_CODER_TYPE_RAW;
- bytes_per_channel = 2;
- pixmax = 0xFFFF;
- dimension = SGI_SINGLE_CHAN;
- depth = SGI_GRAYSCALE;
- break;
- case AV_PIX_FMT_RGB48LE:
- put_be = !HAVE_BIGENDIAN;
- case AV_PIX_FMT_RGB48BE:
- avctx->coder_type = FF_CODER_TYPE_RAW;
- bytes_per_channel = 2;
- pixmax = 0xFFFF;
- dimension = SGI_MULTI_CHAN;
- depth = SGI_RGB;
- break;
- case AV_PIX_FMT_RGBA64LE:
- put_be = !HAVE_BIGENDIAN;
- case AV_PIX_FMT_RGBA64BE:
- avctx->coder_type = FF_CODER_TYPE_RAW;
- bytes_per_channel = 2;
- pixmax = 0xFFFF;
- dimension = SGI_MULTI_CHAN;
- depth = SGI_RGBA;
- break;
- default:
- return AVERROR_INVALIDDATA;
- }
-
- tablesize = depth * height * 4;
- length = SGI_HEADER_SIZE;
- if (avctx->coder_type == FF_CODER_TYPE_RAW)
- length += depth * height * width;
- else // assume ff_rl_encode() produces at most 2x size of input
- length += tablesize * 2 + depth * height * (2 * width + 1);
-
- if ((ret = ff_alloc_packet2(avctx, pkt, bytes_per_channel * length)) < 0)
- return ret;
- buf = pkt->data;
- end_buf = pkt->data + pkt->size;
-
- /* Encode header. */
- bytestream_put_be16(&buf, SGI_MAGIC);
- bytestream_put_byte(&buf, avctx->coder_type != FF_CODER_TYPE_RAW); /* RLE 1 - VERBATIM 0*/
- bytestream_put_byte(&buf, bytes_per_channel);
- bytestream_put_be16(&buf, dimension);
- bytestream_put_be16(&buf, width);
- bytestream_put_be16(&buf, height);
- bytestream_put_be16(&buf, depth);
-
- bytestream_put_be32(&buf, 0L); /* pixmin */
- bytestream_put_be32(&buf, pixmax);
- bytestream_put_be32(&buf, 0L); /* dummy */
-
- /* name */
- memset(buf, 0, SGI_HEADER_SIZE);
- buf += 80;
-
- /* colormap */
- bytestream_put_be32(&buf, 0L);
-
- /* The rest of the 512 byte header is unused. */
- buf += 404;
- offsettab = buf;
-
- if (avctx->coder_type != FF_CODER_TYPE_RAW) {
- /* Skip RLE offset table. */
- buf += tablesize;
- lengthtab = buf;
-
- /* Skip RLE length table. */
- buf += tablesize;
-
- /* Make an intermediate consecutive buffer. */
- if (!(encode_buf = av_malloc(width)))
- return -1;
-
- for (z = 0; z < depth; z++) {
- in_buf = p->data[0] + p->linesize[0] * (height - 1) + z;
-
- for (y = 0; y < height; y++) {
- bytestream_put_be32(&offsettab, buf - pkt->data);
-
- for (x = 0; x < width; x++)
- encode_buf[x] = in_buf[depth * x];
-
- if ((length = ff_rle_encode(buf, end_buf - buf - 1, encode_buf, 1, width, 0, 0, 0x80, 0)) < 1) {
- av_free(encode_buf);
- return -1;
- }
-
- buf += length;
- bytestream_put_byte(&buf, 0);
- bytestream_put_be32(&lengthtab, length + 1);
- in_buf -= p->linesize[0];
- }
- }
-
- av_free(encode_buf);
- } else {
- for (z = 0; z < depth; z++) {
- in_buf = p->data[0] + p->linesize[0] * (height - 1) + z * bytes_per_channel;
-
- for (y = 0; y < height; y++) {
- for (x = 0; x < width * depth; x += depth)
- if (bytes_per_channel == 1) {
- bytestream_put_byte(&buf, in_buf[x]);
- } else {
- if (put_be) {
- bytestream_put_be16(&buf, ((uint16_t *)in_buf)[x]);
- } else {
- bytestream_put_le16(&buf, ((uint16_t *)in_buf)[x]);
- }
- }
-
- in_buf -= p->linesize[0];
- }
- }
- }
-
- /* total length */
- pkt->size = buf - pkt->data;
- pkt->flags |= AV_PKT_FLAG_KEY;
- *got_packet = 1;
-
- return 0;
-}
-
-static av_cold int encode_close(AVCodecContext *avctx)
-{
- av_frame_free(&avctx->coded_frame);
- return 0;
-}
-
-AVCodec ff_sgi_encoder = {
- .name = "sgi",
- .long_name = NULL_IF_CONFIG_SMALL("SGI image"),
- .type = AVMEDIA_TYPE_VIDEO,
- .id = AV_CODEC_ID_SGI,
- .init = encode_init,
- .encode2 = encode_frame,
- .close = encode_close,
- .pix_fmts = (const enum AVPixelFormat[]){
- AV_PIX_FMT_RGB24, AV_PIX_FMT_RGBA,
- AV_PIX_FMT_RGB48LE, AV_PIX_FMT_RGB48BE,
- AV_PIX_FMT_RGBA64LE, AV_PIX_FMT_RGBA64BE,
- AV_PIX_FMT_GRAY16LE, AV_PIX_FMT_GRAY16BE,
- AV_PIX_FMT_GRAY8, AV_PIX_FMT_NONE
- },
-};
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