making act segmenter

1 files changed, 228 insertions, 0 deletions

diff --git a/ffmpeg/libavcodec/sgienc.c b/ffmpeg/libavcodec/sgienc.c
new file mode 100644
index 0000000..d03ef52
--- /dev/null
+++ b/ffmpeg/libavcodec/sgienc.c
@@ -0,0 +1,228 @@
+/*
+ * 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
+
+typedef struct SgiContext {
+    AVFrame picture;
+} SgiContext;
+
+static av_cold int encode_init(AVCodecContext *avctx)
+{
+    SgiContext *s = avctx->priv_data;
+
+    if (avctx->width > 65535 || avctx->height > 65535) {
+        av_log(avctx, AV_LOG_ERROR, "SGI does not support resolutions above 65535x65535\n");
+        return -1;
+    }
+
+    avcodec_get_frame_defaults(&s->picture);
+    avctx->coded_frame = &s->picture;
+
+    return 0;
+}
+
+static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
+                        const AVFrame *frame, int *got_packet)
+{
+    SgiContext *s = avctx->priv_data;
+    AVFrame * const p = &s->picture;
+    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;
+
+    *p = *frame;
+    p->pict_type = AV_PICTURE_TYPE_I;
+    p->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;
+}
+
+AVCodec ff_sgi_encoder = {
+    .name           = "sgi",
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = AV_CODEC_ID_SGI,
+    .priv_data_size = sizeof(SgiContext),
+    .init           = encode_init,
+    .encode2        = encode_frame,
+    .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
+    },
+    .long_name      = NULL_IF_CONFIG_SMALL("SGI image"),
+};