[SCM] libav/experimental: Add av_append_packet function, to be used in code that merges packets to allow palette handling without using PaletteControl.
siretart at users.alioth.debian.org
siretart at users.alioth.debian.org
Sun Jun 30 17:19:09 UTC 2013
The following commit has been merged in the experimental branch:
commit 6bfc26830524ca1e5d7fd54e32ea0ffdbcdd25f5
Author: Reimar Döffinger <Reimar.Doeffinger at gmx.de>
Date: Sun Nov 21 10:24:48 2010 +0000
Add av_append_packet function, to be used in code that merges packets
to allow palette handling without using PaletteControl.
Originally committed as revision 25777 to svn://svn.ffmpeg.org/ffmpeg/trunk
diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index a9cf174..517d1ac 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -22,7 +22,7 @@
#define AVFORMAT_AVFORMAT_H
#define LIBAVFORMAT_VERSION_MAJOR 52
-#define LIBAVFORMAT_VERSION_MINOR 84
+#define LIBAVFORMAT_VERSION_MINOR 85
#define LIBAVFORMAT_VERSION_MICRO 0
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
@@ -245,6 +245,21 @@ void av_metadata_free(AVMetadata **m);
int av_get_packet(ByteIOContext *s, AVPacket *pkt, int size);
+/**
+ * Reads data and appends it to the current content of the AVPacket.
+ * If pkt->size is 0 it behaves like av_get_packet.
+ * Note that this uses av_grow_packet and thus involves a realloc
+ * which is inefficient. Thus this function should only be used
+ * when there is no reasonable way to know (an upper bound of)
+ * the final size.
+ *
+ * @param pkt packet
+ * @param size amount of data to read
+ * @return >0 (read size) if OK, AVERROR_xxx otherwise, previous data
+ * will not be lost even if an error occurs.
+ */
+int av_append_packet(ByteIOContext *s, AVPacket *pkt, int size);
+
/*************************************************/
/* fractional numbers for exact pts handling */
diff --git a/libavformat/utils.c b/libavformat/utils.c
index 937a615..066da54 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -339,6 +339,21 @@ int av_get_packet(ByteIOContext *s, AVPacket *pkt, int size)
return ret;
}
+int av_append_packet(ByteIOContext *s, AVPacket *pkt, int size)
+{
+ int ret;
+ int old_size;
+ if (!pkt->size)
+ return av_get_packet(s, pkt, size);
+ old_size = pkt->size;
+ ret = av_grow_packet(pkt, size);
+ if (ret < 0)
+ return ret;
+ ret = get_buffer(s, pkt->data + old_size, size);
+ av_shrink_packet(pkt, old_size + FFMAX(ret, 0));
+ return ret;
+}
+
int av_filename_number_test(const char *filename)
{
--
Libav/FFmpeg packaging
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