Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
---
libavformat/internal.h | 2 ++
libavformat/rawutils.c | 66 ++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 68 insertions(+)
create mode 100644 libavformat/rawutils.c
diff --git a/libavformat/internal.h b/libavformat/internal.h
index fee823d..b4d32dc 100644
--- a/libavformat/internal.h
+++ b/libavformat/internal.h
@@ -560,4 +560,6 @@ void ff_format_io_close(AVFormatContext *s, AVIOContext
**pb);
*/
int ff_parse_creation_time_metadata(AVFormatContext *s, int64_t *timestamp,
int return_seconds);
+int ff_reshuffle_raw_rgb(AVFormatContext *s, AVPacket **ppkt, AVCodecContext
*enc, int expected_stride);
+
#endif /* AVFORMAT_INTERNAL_H */
diff --git a/libavformat/rawutils.c b/libavformat/rawutils.c
new file mode 100644
index 0000000..e1ae8d1
--- /dev/null
+++ b/libavformat/rawutils.c
@@ -0,0 +1,66 @@
+/*
+ * Raw video utils
+ * Copyright (c) 2016 Michael Niedermayer
+ *
+ * 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 "avformat.h"
+#include "internal.h"
+
+int ff_reshuffle_raw_rgb(AVFormatContext *s, AVPacket **ppkt, AVCodecContext
*enc, int expected_stride)
+{
+ int ret;
+ AVPacket *pkt = *ppkt;
+ int64_t bpc = enc->bits_per_coded_sample != 15 ?
enc->bits_per_coded_sample : 16;
+ int min_stride = (enc->width * bpc + 7) >> 3;
+ int with_pal_size = min_stride * enc->height + 1024;
+ int size = bpc == 8 && pkt->size == with_pal_size ? min_stride *
enc->height : pkt->size;
+ int stride = size / enc->height;
+ int padding = expected_stride - FFMIN(expected_stride, stride);
+ int y;
+ AVPacket *new_pkt;
+
+ if (pkt->size == expected_stride * enc->height)
+ return 0;
+ if (size != stride * enc->height)
+ return 0;
+
+ new_pkt = av_packet_alloc();
+ if (!new_pkt)
+ return AVERROR(ENOMEM);
+
+ ret = av_new_packet(new_pkt, expected_stride * enc->height);
+ if (ret < 0)
+ goto fail;
+
+ ret = av_packet_copy_props(new_pkt, pkt);
+ if (ret < 0)
+ goto fail;
+
+ for (y = 0; y<enc->height; y++) {
+ memcpy(new_pkt->data + y*expected_stride, pkt->data + y*stride,
FFMIN(expected_stride, stride));
+ memset(new_pkt->data + y*expected_stride + expected_stride - padding,
0, padding);
+ }
+
+ *ppkt = new_pkt;
+ return 1;
+fail:
+ av_packet_free(&new_pkt);
+
+ return ret;
+}
\ No newline at end of file
--
1.7.9.5
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