[MEncoder-users] V210 Codec

Reimar Döffinger Reimar.Doeffinger at stud.uni-karlsruhe.de
Tue Feb 17 18:42:32 CET 2009


On Tue, Feb 17, 2009 at 06:18:39AM -0800, P.J. Trudell wrote:
> I hope someone working with the v210 codec can point me in the right direction.  I had it working once but had to wipe the machine and I can't seem to get there again.

You could just apply attached patch to MPlayer.
If someone has or can create a video in that v210 format with e.g. a width of
704 (or any other resolution that is divisible by 64 but not 128) I'd be
interested (the current patch _might_ break with that, unfortunately I
found no official specification of the format).
Not you need to apply it to a very recent version of MPlayer or it will
crash.

Greetings,
Reimar Döffinger
-------------- next part --------------
Index: etc/codecs.conf
===================================================================
--- etc/codecs.conf	(revision 28634)
+++ etc/codecs.conf	(working copy)
@@ -2324,6 +2324,14 @@
   dll "dnxhd"
   out 422P
 
+videocodec ffv210
+  info "FFmpeg v210"
+  status working
+  fourcc v210
+  driver ffmpeg
+  dll "v210"
+  out UYVY
+
 ; quicktime codecs:
 
 videocodec qt3ivx
Index: libavcodec/v210.c
===================================================================
--- libavcodec/v210.c	(revision 0)
+++ libavcodec/v210.c	(revision 0)
@@ -0,0 +1,109 @@
+/*
+ * v210 (10 bit 4:2:2 YUV) decoder
+ * Copyright (c) 2009 Reimar Doeffinger
+ *
+ * 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"
+
+static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
+                        const uint8_t *buf, int buf_size) {
+    int x, y;
+    AVFrame *picture = data;
+    AVFrame *pic = avctx->priv_data;
+    uint8_t *dst_line = pic->data[0];
+    const uint8_t *src_line = buf;
+    int src_linesize = (avctx->width + 5) / 6 * 16;
+    src_linesize = (src_linesize + 63) & ~63;
+    if (buf_size < src_linesize * avctx->height) {
+        av_log(avctx, AV_LOG_ERROR, "coded frame too small\n");
+        return -1;
+    }
+
+    for (y = 0; y < avctx->height; y++) {
+        const uint8_t *src = src_line;
+        uint64_t val;
+        for (x = 0; x < avctx->width - 5; x += 6) {
+            val = bytestream_get_le64(&src);
+            dst_line[2 * x +  0] = val >>  2;
+            dst_line[2 * x +  1] = val >> 12;
+            dst_line[2 * x +  2] = val >> 22;
+            dst_line[2 * x +  3] = val >> 34;
+            dst_line[2 * x +  4] = val >> 44;
+            dst_line[2 * x +  5] = val >> 54;
+            val = bytestream_get_le64(&src);
+            dst_line[2 * x +  6] = val >>  2;
+            dst_line[2 * x +  7] = val >> 12;
+            dst_line[2 * x +  8] = val >> 22;
+            dst_line[2 * x +  9] = val >> 34;
+            dst_line[2 * x + 10] = val >> 44;
+            dst_line[2 * x + 11] = val >> 54;
+        }
+        if (x < avctx->width - 1) {
+            val = bytestream_get_le64(&src);
+            dst_line[2 * x +  0] = val >>  2;
+            dst_line[2 * x +  1] = val >> 12;
+            dst_line[2 * x +  2] = val >> 22;
+            dst_line[2 * x +  3] = val >> 34;
+        }
+        if (x < avctx->width - 3) {
+            dst_line[2 * x +  4] = val >> 44;
+            dst_line[2 * x +  5] = val >> 54;
+            val = bytestream_get_le64(&src);
+            dst_line[2 * x +  6] = val >>  2;
+            dst_line[2 * x +  7] = val >> 12;
+        }
+        src_line += src_linesize;
+        dst_line += pic->linesize[0];
+    }
+
+    *picture = *pic;
+    *data_size = sizeof(AVFrame);
+    return src_line - buf;
+}
+
+static av_cold int decode_init(AVCodecContext *avctx) {
+    AVFrame *pic = avctx->priv_data;
+    if (avcodec_check_dimensions(avctx, avctx->height, avctx->width) < 0)
+        return 1;
+    avctx->pix_fmt = PIX_FMT_UYVY422;
+    if (avctx->get_buffer(avctx, pic) < 0)
+        return 1;
+    pic->pict_type = FF_I_TYPE;
+    pic->key_frame = 1;
+    return 0;
+}
+
+static av_cold int decode_end(AVCodecContext *avctx) {
+    avctx->release_buffer(avctx, avctx->priv_data);
+    return 0;
+}
+
+AVCodec v210_decoder = {
+    "v210",
+    CODEC_TYPE_VIDEO,
+    CODEC_ID_V210,
+    sizeof(AVFrame),
+    decode_init,
+    NULL,
+    decode_end,
+    decode_frame,
+    CODEC_CAP_DR1,
+    .long_name = NULL_IF_CONFIG_SMALL("v210 10 bit 4:2:2 YUV"),
+};
+
Index: libavcodec/Makefile
===================================================================
--- libavcodec/Makefile	(revision 17393)
+++ libavcodec/Makefile	(working copy)
@@ -219,6 +219,7 @@
 OBJS-$(CONFIG_TTA_DECODER)             += tta.o
 OBJS-$(CONFIG_TXD_DECODER)             += txd.o s3tc.o
 OBJS-$(CONFIG_ULTI_DECODER)            += ulti.o
+OBJS-$(CONFIG_V210_DECODER)            += v210.o
 OBJS-$(CONFIG_VB_DECODER)              += vb.o
 OBJS-$(CONFIG_VC1_DECODER)             += vc1.o vc1data.o vc1dsp.o msmpeg4data.o h263dec.o h263.o intrax8.o intrax8dsp.o error_resilience.o mpegvideo.o
 OBJS-$(CONFIG_VC1_VDPAU_DECODER)       += vdpau.o vc1.o vc1data.o vc1dsp.o msmpeg4data.o h263dec.o h263.o intrax8.o intrax8dsp.o error_resilience.o mpegvideo.o
Index: libavcodec/allcodecs.c
===================================================================
--- libavcodec/allcodecs.c	(revision 17393)
+++ libavcodec/allcodecs.c	(working copy)
@@ -156,6 +156,7 @@
     REGISTER_DECODER (TSCC, tscc);
     REGISTER_DECODER (TXD, txd);
     REGISTER_DECODER (ULTI, ulti);
+    REGISTER_DECODER (V210, v210);
     REGISTER_DECODER (VB, vb);
     REGISTER_DECODER (VC1, vc1);
     REGISTER_DECODER (VC1_VDPAU, vc1_vdpau);
Index: libavcodec/avcodec.h
===================================================================
--- libavcodec/avcodec.h	(revision 17393)
+++ libavcodec/avcodec.h	(working copy)
@@ -191,6 +191,7 @@
     CODEC_ID_TGV,
     CODEC_ID_TGQ,
     CODEC_ID_TQI,
+    CODEC_ID_V210,
 
     /* various PCM "codecs" */
     CODEC_ID_PCM_S16LE= 0x10000,


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