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authorDerek Buitenhuis <derek.buitenhuis@gmail.com>2011-12-13 14:24:56 -0500
committerMichael Niedermayer <michaelni@gmx.at>2011-12-14 03:38:57 +0100
commit309ffa4fe3388d842a51000dc7d56abac53ff759 (patch)
tree4661eae88955f627c27c820782b7e9cbfbc04997 /libavcodec/v410dec.c
parent635a301683db314aa21717276420ad8b5267f07e (diff)
downloadffmpeg-309ffa4fe3388d842a51000dc7d56abac53ff759.tar.gz
v410 encoder and decoder
v410 is a packed 10-bit 4:4:4 YCbCr format used in QuickTime. Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/v410dec.c')
-rw-r--r--libavcodec/v410dec.c113
1 files changed, 113 insertions, 0 deletions
diff --git a/libavcodec/v410dec.c b/libavcodec/v410dec.c
new file mode 100644
index 0000000000..6640ba0345
--- /dev/null
+++ b/libavcodec/v410dec.c
@@ -0,0 +1,113 @@
+/*
+ * v410 decoder
+ *
+ * Copyright (c) 2011 Derek Buitenhuis
+ *
+ * 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 "get_bits.h"
+
+static av_cold int v410_decode_init(AVCodecContext *avctx)
+{
+ avctx->pix_fmt = PIX_FMT_YUV444P10;
+ avctx->bits_per_raw_sample = 10;
+
+ if (avctx->width & 1) {
+ av_log(avctx, AV_LOG_ERROR, "v410 requires width to be even.\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ avctx->coded_frame = avcodec_alloc_frame();
+
+ if (!avctx->coded_frame) {
+ av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n");
+ return AVERROR(ENOMEM);
+ }
+
+ return 0;
+}
+
+static int v410_decode_frame(AVCodecContext *avctx, void *data,
+ int *data_size, AVPacket *avpkt)
+{
+ AVFrame *pic = avctx->coded_frame;
+ uint8_t *src = avpkt->data;
+ uint16_t *y, *u, *v;
+ uint32_t val;
+ int i, j;
+
+ if (pic->data[0])
+ avctx->release_buffer(avctx, pic);
+
+ pic->reference = 0;
+
+ if (avctx->get_buffer(avctx, pic) < 0) {
+ av_log(avctx, AV_LOG_ERROR, "Could not allocate buffer.\n");
+ return AVERROR(ENOMEM);
+ }
+
+ pic->key_frame = 1;
+ pic->pict_type = FF_I_TYPE;
+
+ y = (uint16_t *)pic->data[0];
+ u = (uint16_t *)pic->data[1];
+ v = (uint16_t *)pic->data[2];
+
+ for (i = 0; i < avctx->height; i++) {
+ for (j = 0; j < avctx->width; j++) {
+ val = AV_RL32(src);
+
+ u[j] = (val >> 2) & 0x3FF;
+ y[j] = (val >> 12) & 0x3FF;
+ v[j] = (val >> 22);
+
+ src += 4;
+ }
+
+ y += pic->linesize[0] >> 1;
+ u += pic->linesize[1] >> 1;
+ v += pic->linesize[2] >> 1;
+ }
+
+ *data_size = sizeof(AVFrame);
+ *(AVFrame *)data = *pic;
+
+ return avpkt->size;
+}
+
+static av_cold int v410_decode_close(AVCodecContext *avctx)
+{
+ if (avctx->coded_frame->data[0])
+ avctx->release_buffer(avctx, avctx->coded_frame);
+
+ av_freep(&avctx->coded_frame);
+
+ return 0;
+}
+
+AVCodec ff_v410_decoder = {
+ .name = "v410",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = CODEC_ID_V410,
+ .init = v410_decode_init,
+ .decode = v410_decode_frame,
+ .close = v410_decode_close,
+ .capabilities = CODEC_CAP_DR1,
+ .long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:4:4 10-bit"),
+};