diff options
| author | yangsen5 <1441923451@qq.com> | 2025-07-31 17:05:07 +0800 |
|---|---|---|
| committer | Zhao Zhili <zhilizhao@tencent.com> | 2025-08-25 18:15:17 +0800 |
| commit | 6c07a4f5588d94f801bf35515626c28d101d2172 (patch) | |
| tree | 348b0292ba7e0fcef5a3050753f401f51b857dc6 | |
| parent | 1b62f9d3ae6b66db60ac4725605eebd6e9d8be09 (diff) | |
| download | ffmpeg-6c07a4f5588d94f801bf35515626c28d101d2172.tar.gz | |
avformat/file: add pkt_size option
The min_packet_size/max_packet_size were hardcoded to 256KB for
performance. The new option makes it possible to configure a
smaller packet size on embedded devices with limited memory
resources.
Signed-off-by: yangsen5 <1441923451@qq.com>
Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>
| -rw-r--r-- | libavformat/file.c | 4 | ||||
| -rw-r--r-- | libavformat/version.h | 2 |
2 files changed, 4 insertions, 2 deletions
diff --git a/libavformat/file.c b/libavformat/file.c index a6eceff58d..97f5955f93 100644 --- a/libavformat/file.c +++ b/libavformat/file.c @@ -94,6 +94,7 @@ typedef struct FileContext { int fd; int trunc; int blocksize; + int pkt_size; int follow; int seekable; #if HAVE_DIRENT_H @@ -106,6 +107,7 @@ static const AVOption file_options[] = { { "blocksize", "set I/O operation maximum block size", offsetof(FileContext, blocksize), AV_OPT_TYPE_INT, { .i64 = INT_MAX }, 1, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM }, { "follow", "Follow a file as it is being written", offsetof(FileContext, follow), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, AV_OPT_FLAG_DECODING_PARAM }, { "seekable", "Sets if the file is seekable", offsetof(FileContext, seekable), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 0, AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_ENCODING_PARAM }, + { "pkt_size", "Maximum packet size", offsetof(FileContext, pkt_size), AV_OPT_TYPE_INT, { .i64 = 262144 }, 1, INT_MAX, AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_ENCODING_PARAM }, { NULL } }; @@ -313,7 +315,7 @@ static int file_open(URLContext *h, const char *filename, int flags) /* Buffer writes more than the default 32k to improve throughput especially * with networked file systems */ if (!h->is_streamed && flags & AVIO_FLAG_WRITE) - h->min_packet_size = h->max_packet_size = 262144; + h->min_packet_size = h->max_packet_size = c->pkt_size; if (c->seekable >= 0) h->is_streamed = !c->seekable; diff --git a/libavformat/version.h b/libavformat/version.h index af7d0a1024..cc56b7cf5c 100644 --- a/libavformat/version.h +++ b/libavformat/version.h @@ -32,7 +32,7 @@ #include "version_major.h" #define LIBAVFORMAT_VERSION_MINOR 4 -#define LIBAVFORMAT_VERSION_MICRO 100 +#define LIBAVFORMAT_VERSION_MICRO 101 #define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \ LIBAVFORMAT_VERSION_MINOR, \ |