Add Avid Meridien Uncompressed (AVUI) encoder.

1 files changed, 107 insertions, 0 deletions

diff --git a/libavcodec/avuienc.c b/libavcodec/avuienc.c
new file mode 100644
index 0000000000..2dae5ccaf1
--- /dev/null
+++ b/libavcodec/avuienc.c
@@ -0,0 +1,107 @@
+/*
+ * AVID Meridien encoder
+ *
+ * Copyright (c) 2012 Carl Eugen Hoyos
+ *
+ * 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 "internal.h"
+
+static av_cold int avui_encode_init(AVCodecContext *avctx)
+{
+    avctx->coded_frame = avcodec_alloc_frame();
+
+    if (avctx->width != 720 || avctx->height != 486 && avctx->height != 576) {
+        av_log(avctx, AV_LOG_ERROR, "Only 720x486 and 720x576 are supported.\n");
+        return AVERROR(EINVAL);
+    }
+    if (!avctx->coded_frame) {
+        av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n");
+        return AVERROR(ENOMEM);
+    }
+
+    return 0;
+}
+
+static int avui_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
+                             const AVFrame *pic, int *got_packet)
+{
+    uint8_t *dst, *src = pic->data[0];
+    int i, j, skip, ret, size, interlaced = pic->interlaced_frame;
+
+    if (avctx->height == 486) {
+        skip = 10;
+    } else {
+        skip = 16;
+    }
+    size = 2 * avctx->width * (avctx->height + skip) + 8 * interlaced;
+    if ((ret = ff_alloc_packet2(avctx, pkt, size)) < 0)
+        return ret;
+    dst = pkt->data;
+    if (!(avctx->extradata = av_mallocz(24 + FF_INPUT_BUFFER_PADDING_SIZE)))
+        return AVERROR(ENOMEM);
+    avctx->extradata_size = 24;
+    memcpy(avctx->extradata, "\0\0\0\x18""APRGAPRG0001", 16);
+    if (interlaced) {
+        avctx->extradata[19] = 2;
+    } else {
+        avctx->extradata[19] = 1;
+        dst += avctx->width * skip;
+    }
+
+    avctx->coded_frame->reference = 0;
+    avctx->coded_frame->key_frame = 1;
+    avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
+
+    for (i = 0; i <= interlaced; i++) {
+        if (interlaced && avctx->height == 486) {
+            src = pic->data[0] + (1 - i) * pic->linesize[0];
+        } else {
+            src = pic->data[0] + i * pic->linesize[0];
+        }
+        dst += avctx->width * skip + 4 * i;
+        for (j = 0; j < avctx->height; j += interlaced + 1) {
+            memcpy(dst, src, avctx->width * 2);
+            src += (interlaced + 1) * pic->linesize[0];
+            dst += avctx->width * 2;
+        }
+    }
+
+    pkt->flags |= AV_PKT_FLAG_KEY;
+    *got_packet = 1;
+    return 0;
+}
+
+static av_cold int avui_encode_close(AVCodecContext *avctx)
+{
+    av_freep(&avctx->coded_frame);
+
+    return 0;
+}
+
+AVCodec ff_avui_encoder = {
+    .name         = "avui",
+    .type         = AVMEDIA_TYPE_VIDEO,
+    .id           = CODEC_ID_AVUI,
+    .init         = avui_encode_init,
+    .encode2      = avui_encode_frame,
+    .close        = avui_encode_close,
+    .pix_fmts     = (const enum PixelFormat[]){ PIX_FMT_UYVY422, PIX_FMT_NONE },
+    .long_name    = NULL_IF_CONFIG_SMALL("Avid Meridien Uncompressed"),
+};