making act segmenter

1 files changed, 178 insertions, 0 deletions

diff --git a/ffmpeg/libavcodec/v210dec.c b/ffmpeg/libavcodec/v210dec.c
new file mode 100644
index 0000000..42e25cc
--- /dev/null
+++ b/ffmpeg/libavcodec/v210dec.c
@@ -0,0 +1,178 @@
+/*
+ * V210 decoder
+ *
+ * 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 "internal.h"
+#include "v210dec.h"
+#include "libavutil/bswap.h"
+#include "libavutil/internal.h"
+#include "libavutil/mem.h"
+
+#define READ_PIXELS(a, b, c)         \
+    do {                             \
+        val  = av_le2ne32(*src++);   \
+        *a++ =  val & 0x3FF;         \
+        *b++ = (val >> 10) & 0x3FF;  \
+        *c++ = (val >> 20) & 0x3FF;  \
+    } while (0)
+
+static void v210_planar_unpack_c(const uint32_t *src, uint16_t *y, uint16_t *u, uint16_t *v, int width)
+{
+    uint32_t val;
+    int i;
+
+    for( i = 0; i < width-5; i += 6 ){
+        READ_PIXELS(u, y, v);
+        READ_PIXELS(y, u, y);
+        READ_PIXELS(v, y, u);
+        READ_PIXELS(y, v, y);
+    }
+}
+
+static av_cold int decode_init(AVCodecContext *avctx)
+{
+    V210DecContext *s = avctx->priv_data;
+
+    if (avctx->width & 1) {
+        av_log(avctx, AV_LOG_ERROR, "v210 needs even width\n");
+        return AVERROR_INVALIDDATA;
+    }
+    avctx->pix_fmt             = AV_PIX_FMT_YUV422P10;
+    avctx->bits_per_raw_sample = 10;
+
+    s->unpack_frame            = v210_planar_unpack_c;
+
+    if (HAVE_MMX)
+        v210_x86_init(s);
+
+    return 0;
+}
+
+static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
+                        AVPacket *avpkt)
+{
+    V210DecContext *s = avctx->priv_data;
+
+    int h, w, ret, stride, aligned_input;
+    AVFrame *pic = data;
+    const uint8_t *psrc = avpkt->data;
+    uint16_t *y, *u, *v;
+
+    if (s->custom_stride )
+        stride = s->custom_stride;
+    else {
+        int aligned_width = ((avctx->width + 47) / 48) * 48;
+        stride = aligned_width * 8 / 3;
+    }
+
+    if (avpkt->size < stride * avctx->height) {
+        if ((((avctx->width + 23) / 24) * 24 * 8) / 3 * avctx->height == avpkt->size) {
+            stride = avpkt->size / avctx->height;
+            if (!s->stride_warning_shown)
+                av_log(avctx, AV_LOG_WARNING, "Broken v210 with too small padding (64 byte) detected\n");
+            s->stride_warning_shown = 1;
+        } else {
+            av_log(avctx, AV_LOG_ERROR, "packet too small\n");
+            return AVERROR_INVALIDDATA;
+        }
+    }
+
+    aligned_input = !((uintptr_t)psrc & 0xf) && !(stride & 0xf);
+    if (aligned_input != s->aligned_input) {
+        s->aligned_input = aligned_input;
+        if (HAVE_MMX)
+            v210_x86_init(s);
+    }
+
+    if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
+        return ret;
+
+    y = (uint16_t*)pic->data[0];
+    u = (uint16_t*)pic->data[1];
+    v = (uint16_t*)pic->data[2];
+    pic->pict_type = AV_PICTURE_TYPE_I;
+    pic->key_frame = 1;
+
+    for (h = 0; h < avctx->height; h++) {
+        const uint32_t *src = (const uint32_t*)psrc;
+        uint32_t val;
+
+        w = (avctx->width / 6) * 6;
+        s->unpack_frame(src, y, u, v, w);
+
+        y += w;
+        u += w >> 1;
+        v += w >> 1;
+        src += (w << 1) / 3;
+
+        if (w < avctx->width - 1) {
+            READ_PIXELS(u, y, v);
+
+            val  = av_le2ne32(*src++);
+            *y++ =  val & 0x3FF;
+            if (w < avctx->width - 3) {
+                *u++ = (val >> 10) & 0x3FF;
+                *y++ = (val >> 20) & 0x3FF;
+
+                val  = av_le2ne32(*src++);
+                *v++ =  val & 0x3FF;
+                *y++ = (val >> 10) & 0x3FF;
+            }
+        }
+
+        psrc += stride;
+        y += pic->linesize[0] / 2 - avctx->width;
+        u += pic->linesize[1] / 2 - avctx->width / 2;
+        v += pic->linesize[2] / 2 - avctx->width / 2;
+    }
+
+    *got_frame      = 1;
+
+    return avpkt->size;
+}
+
+#define V210DEC_FLAGS AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM
+static const AVOption v210dec_options[] = {
+    {"custom_stride", "Custom V210 stride", offsetof(V210DecContext, custom_stride), FF_OPT_TYPE_INT,
+     {.i64 = 0}, INT_MIN, INT_MAX, V210DEC_FLAGS},
+    {NULL}
+};
+
+static const AVClass v210dec_class = {
+    "V210 Decoder",
+    av_default_item_name,
+    v210dec_options,
+    LIBAVUTIL_VERSION_INT,
+};
+
+AVCodec ff_v210_decoder = {
+    .name           = "v210",
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = AV_CODEC_ID_V210,
+    .priv_data_size = sizeof(V210DecContext),
+    .init           = decode_init,
+    .decode         = decode_frame,
+    .capabilities   = CODEC_CAP_DR1,
+    .long_name      = NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"),
+    .priv_class     = &v210dec_class,
+};