ffmpeg-2.1.1: move directory

git-svn-id: svn://kolibrios.org@6148 a494cfbc-eb01-0410-851d-a64ba20cac60

contrib/sdk/sources/ffmpeg/ffmpeg-2.1/libavcodec/v210enc.c

@@ -0,0 +1,126 @@
+/*
+ * V210 encoder
+ *
+ * Copyright (C) 2009 Michael Niedermayer <michaelni@gmx.at>
+ * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
+ *
+ * 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"
+
+static av_cold int encode_init(AVCodecContext *avctx)
+{
+    if (avctx->width & 1) {
+        av_log(avctx, AV_LOG_ERROR, "v210 needs even width\n");
+        return AVERROR(EINVAL);
+    }
+
+    if (avctx->bits_per_raw_sample != 10)
+        av_log(avctx, AV_LOG_WARNING, "bits per raw sample: %d != 10-bit\n",
+               avctx->bits_per_raw_sample);
+
+    avctx->coded_frame = avcodec_alloc_frame();
+    if (!avctx->coded_frame)
+        return AVERROR(ENOMEM);
+
+    avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
+
+    return 0;
+}
+
+static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
+                        const AVFrame *pic, int *got_packet)
+{
+    int aligned_width = ((avctx->width + 47) / 48) * 48;
+    int stride = aligned_width * 8 / 3;
+    int line_padding = stride - ((avctx->width * 8 + 11) / 12) * 4;
+    int h, w, ret;
+    const uint16_t *y = (const uint16_t*)pic->data[0];
+    const uint16_t *u = (const uint16_t*)pic->data[1];
+    const uint16_t *v = (const uint16_t*)pic->data[2];
+    PutByteContext p;
+
+    if ((ret = ff_alloc_packet2(avctx, pkt, avctx->height * stride)) < 0)
+        return ret;
+
+    bytestream2_init_writer(&p, pkt->data, pkt->size);
+
+#define CLIP(v) av_clip(v, 4, 1019)
+
+#define WRITE_PIXELS(a, b, c)           \
+    do {                                \
+        val =   CLIP(*a++);             \
+        val |= (CLIP(*b++) << 10) |     \
+               (CLIP(*c++) << 20);      \
+        bytestream2_put_le32u(&p, val); \
+    } while (0)
+
+    for (h = 0; h < avctx->height; h++) {
+        uint32_t val;
+        for (w = 0; w < avctx->width - 5; w += 6) {
+            WRITE_PIXELS(u, y, v);
+            WRITE_PIXELS(y, u, y);
+            WRITE_PIXELS(v, y, u);
+            WRITE_PIXELS(y, v, y);
+        }
+        if (w < avctx->width - 1) {
+            WRITE_PIXELS(u, y, v);
+
+            val = CLIP(*y++);
+            if (w == avctx->width - 2)
+                bytestream2_put_le32u(&p, val);
+            if (w < avctx->width - 3) {
+                val |= (CLIP(*u++) << 10) | (CLIP(*y++) << 20);
+                bytestream2_put_le32u(&p, val);
+
+                val = CLIP(*v++) | (CLIP(*y++) << 10);
+                bytestream2_put_le32u(&p, val);
+            }
+        }
+
+        bytestream2_set_buffer(&p, 0, line_padding);
+
+        y += pic->linesize[0] / 2 - avctx->width;
+        u += pic->linesize[1] / 2 - avctx->width / 2;
+        v += pic->linesize[2] / 2 - avctx->width / 2;
+    }
+
+    pkt->flags |= AV_PKT_FLAG_KEY;
+    *got_packet = 1;
+    return 0;
+}
+
+static av_cold int encode_close(AVCodecContext *avctx)
+{
+    av_freep(&avctx->coded_frame);
+
+    return 0;
+}
+
+AVCodec ff_v210_encoder = {
+    .name           = "v210",
+    .long_name      = NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"),
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = AV_CODEC_ID_V210,
+    .init           = encode_init,
+    .encode2        = encode_frame,
+    .close          = encode_close,
+    .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV422P10, AV_PIX_FMT_NONE },
+};