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-rw-r--r--libavcodec/v308dec.c108
1 files changed, 108 insertions, 0 deletions
diff --git a/libavcodec/v308dec.c b/libavcodec/v308dec.c
new file mode 100644
index 0000000000..a24ccf4384
--- /dev/null
+++ b/libavcodec/v308dec.c
@@ -0,0 +1,108 @@
+/*
+ * v308 decoder
+ * Copyright (c) 2011 Carl Eugen Hoyos
+ *
+ * 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"
+
+static av_cold int v308_decode_init(AVCodecContext *avctx)
+{
+ avctx->pix_fmt = PIX_FMT_YUV444P;
+
+ if (avctx->width & 1)
+ av_log(avctx, AV_LOG_WARNING, "v308 requires width to be even.\n");
+
+ 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 v308_decode_frame(AVCodecContext *avctx, void *data,
+ int *data_size, AVPacket *avpkt)
+{
+ AVFrame *pic = avctx->coded_frame;
+ const uint8_t *src = avpkt->data;
+ uint8_t *y, *u, *v;
+ int i, j;
+
+ if (pic->data[0])
+ avctx->release_buffer(avctx, pic);
+
+ if (avpkt->size < 3 * avctx->height * avctx->width) {
+ av_log(avctx, AV_LOG_ERROR, "Insufficient input data.\n");
+ return AVERROR(EINVAL);
+ }
+
+ 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 = AV_PICTURE_TYPE_I;
+
+ y = pic->data[0];
+ u = pic->data[1];
+ v = pic->data[2];
+
+ for (i = 0; i < avctx->height; i++) {
+ for (j = 0; j < avctx->width; j++) {
+ v[j] = *src++;
+ y[j] = *src++;
+ u[j] = *src++;
+ }
+
+ y += pic->linesize[0];
+ u += pic->linesize[1];
+ v += pic->linesize[2];
+ }
+
+ *data_size = sizeof(AVFrame);
+ *(AVFrame *)data = *pic;
+
+ return avpkt->size;
+}
+
+static av_cold int v308_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_v308_decoder = {
+ .name = "v308",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = CODEC_ID_V308,
+ .init = v308_decode_init,
+ .decode = v308_decode_frame,
+ .close = v308_decode_close,
+ .capabilities = CODEC_CAP_DR1,
+ .long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed 4:4:4"),
+};