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authorReimar Döffinger <Reimar.Doeffinger@gmx.de>2009-12-17 18:56:56 +0000
committerReimar Döffinger <Reimar.Doeffinger@gmx.de>2009-12-17 18:56:56 +0000
commit4aaab0a328b671f91a6cd195ef98f0d5592c5e4a (patch)
tree97e6719e083406318fe849456a023b4ea25ed622 /libavcodec/r210dec.c
parenta3d995c1eb98e38186bf9ed677809c442a7dab35 (diff)
downloadffmpeg-4aaab0a328b671f91a6cd195ef98f0d5592c5e4a.tar.gz
Add decoder for R210 (uncompressed 10-bit RGB) codec.
Originally committed as revision 20891 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/r210dec.c')
-rw-r--r--libavcodec/r210dec.c104
1 files changed, 104 insertions, 0 deletions
diff --git a/libavcodec/r210dec.c b/libavcodec/r210dec.c
new file mode 100644
index 0000000000..94edb169ae
--- /dev/null
+++ b/libavcodec/r210dec.c
@@ -0,0 +1,104 @@
+/*
+ * R210 decoder
+ *
+ * Copyright (c) 2009 Reimar Doeffinger <Reimar.Doeffinger@gmx.de>
+ *
+ * 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 "libavutil/bswap.h"
+
+static av_cold int decode_init(AVCodecContext *avctx)
+{
+ avctx->pix_fmt = PIX_FMT_RGB48;
+ avctx->bits_per_raw_sample = 10;
+
+ avctx->coded_frame = avcodec_alloc_frame();
+
+ return 0;
+}
+
+static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
+ AVPacket *avpkt)
+{
+ int h, w;
+ AVFrame *pic = avctx->coded_frame;
+ const uint32_t *src = (const uint32_t *)avpkt->data;
+ int aligned_width = FFALIGN(avctx->width, 64);
+ uint8_t *dst_line;
+
+ if (pic->data[0])
+ avctx->release_buffer(avctx, pic);
+
+ if (avpkt->size < 4 * aligned_width * avctx->height) {
+ av_log(avctx, AV_LOG_ERROR, "packet too small\n");
+ return -1;
+ }
+
+ pic->reference = 0;
+ if (avctx->get_buffer(avctx, pic) < 0)
+ return -1;
+
+ pic->pict_type = FF_I_TYPE;
+ pic->key_frame = 1;
+ dst_line = pic->data[0];
+
+ for (h = 0; h < avctx->height; h++) {
+ uint16_t *dst = (uint16_t *)dst_line;
+ for (w = 0; w < avctx->width; w++) {
+ uint32_t pixel = be2me_32(*src++);
+ uint16_t r, g, b;
+ r = pixel << 6;
+ g = (pixel >> 4) & 0xffc0;
+ b = (pixel >> 14) & 0xffc0;
+ *dst++ = r | (r >> 10);
+ *dst++ = g | (g >> 10);
+ *dst++ = b | (b >> 10);
+ }
+ src += aligned_width - avctx->width;
+ dst_line += pic->linesize[0];
+ }
+
+ *data_size = sizeof(AVFrame);
+ *(AVFrame*)data = *avctx->coded_frame;
+
+ return avpkt->size;
+}
+
+static av_cold int decode_close(AVCodecContext *avctx)
+{
+ AVFrame *pic = avctx->coded_frame;
+ if (pic->data[0])
+ avctx->release_buffer(avctx, pic);
+ av_freep(&avctx->coded_frame);
+
+ return 0;
+}
+
+AVCodec r210_decoder = {
+ "r210",
+ CODEC_TYPE_VIDEO,
+ CODEC_ID_R210,
+ 0,
+ decode_init,
+ NULL,
+ decode_close,
+ decode_frame,
+ CODEC_CAP_DR1,
+ .long_name = NULL_IF_CONFIG_SMALL("Uncompressed RGB 10-bit"),
+};