[FFmpeg-devel] [PATCH 3/4] avcodec/packet: change side data related public function and struct size types to size_t

[James Almer]

av_packet_add_side_data() already defines size as a size_t, so this makes it
consistent across all side data functions.

Signed-off-by: James Almer <jamrial at gmail.com>
---
I could either add ifdeffery to every size argument used in
av_packet_get_side_data() calls within the libraries, add an internal typedef
that goes int -> size_t depending on FF_API_BUFFER_SIZE_T and use that, or just
not bother with them right now and change them after the bump in the same
commit that removes FF_API_BUFFER_SIZE_T.

In this patch i went the ifdef route for ff_side_data_set_encoder_stats() and
ff_side_data_set_prft().

 doc/APIchanges        |  4 ++--
 libavcodec/avpacket.c | 28 ++++++++++++++++++++++++++++
 libavcodec/packet.h   |  4 ++++
 3 files changed, 34 insertions(+), 2 deletions(-)

diff --git a/doc/APIchanges b/doc/APIchanges
index dbf21c1d1e..d616594ff6 100644
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -16,8 +16,8 @@ libavutil:     2017-10-21
 API changes, most recent first:
 
 2020-06-xx - xxxxxxxxxx
-  Change AVBufferRef and relevant AVFrameSideData function and struct size
-  parameter and fields type to size_t at next major bump.
+  Change AVBufferRef and relevant AVFrameSideData and AVPacketSideData function and
+  struct size parameter and fields type to size_t at next major bump.
 
 2020-xx-xx - xxxxxxxxxx - lavc 58.88.100 - avcodec.h codec.h
   Move AVCodec-related public API to new header codec.h.
diff --git a/libavcodec/avpacket.c b/libavcodec/avpacket.c
index 033f2d8f26..db9c947b62 100644
--- a/libavcodec/avpacket.c
+++ b/libavcodec/avpacket.c
@@ -329,12 +329,20 @@ int av_packet_add_side_data(AVPacket *pkt, enum AVPacketSideDataType type,
 
 
 uint8_t *av_packet_new_side_data(AVPacket *pkt, enum AVPacketSideDataType type,
+#if FF_API_BUFFER_SIZE_T
                                  int size)
+#else
+                                 size_t size)
+#endif
 {
     int ret;
     uint8_t *data;
 
+#if FF_API_BUFFER_SIZE_T
     if ((unsigned)size > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
+#else
+    if (size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
+#endif
         return NULL;
     data = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE);
     if (!data)
@@ -350,7 +358,11 @@ uint8_t *av_packet_new_side_data(AVPacket *pkt, enum AVPacketSideDataType type,
 }
 
 uint8_t *av_packet_get_side_data(const AVPacket *pkt, enum AVPacketSideDataType type,
+#if FF_API_BUFFER_SIZE_T
                                  int *size)
+#else
+                                 size_t *size)
+#endif
 {
     int i;
 
@@ -552,7 +564,11 @@ int av_packet_unpack_dictionary(const uint8_t *data, int size, AVDictionary **di
 }
 
 int av_packet_shrink_side_data(AVPacket *pkt, enum AVPacketSideDataType type,
+#if FF_API_BUFFER_SIZE_T
                                int size)
+#else
+                               size_t size)
+#endif
 {
     int i;
 
@@ -587,7 +603,11 @@ FF_ENABLE_DEPRECATION_WARNINGS
     dst->side_data_elems      = 0;
     for (i = 0; i < src->side_data_elems; i++) {
         enum AVPacketSideDataType type = src->side_data[i].type;
+#if FF_API_BUFFER_SIZE_T
         int size          = src->side_data[i].size;
+#else
+        size_t size       = src->side_data[i].size;
+#endif
         uint8_t *src_data = src->side_data[i].data;
         uint8_t *dst_data = av_packet_new_side_data(dst, type, size);
 
@@ -727,7 +747,11 @@ FF_ENABLE_DEPRECATION_WARNINGS
 int ff_side_data_set_encoder_stats(AVPacket *pkt, int quality, int64_t *error, int error_count, int pict_type)
 {
     uint8_t *side_data;
+#if FF_API_BUFFER_SIZE_T
     int side_data_size;
+#else
+    size_t side_data_size;
+#endif
     int i;
 
     side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_QUALITY_STATS, &side_data_size);
@@ -753,7 +777,11 @@ int ff_side_data_set_prft(AVPacket *pkt, int64_t timestamp)
 {
     AVProducerReferenceTime *prft;
     uint8_t *side_data;
+#if FF_API_BUFFER_SIZE_T
     int side_data_size;
+#else
+    size_t side_data_size;
+#endif
 
     side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_PRFT, &side_data_size);
     if (!side_data) {
diff --git a/libavcodec/packet.h b/libavcodec/packet.h
index 41485f4527..5b98ae812e 100644
--- a/libavcodec/packet.h
+++ b/libavcodec/packet.h
@@ -297,7 +297,11 @@ enum AVPacketSideDataType {
 
 typedef struct AVPacketSideData {
     uint8_t *data;
+#if FF_API_BUFFER_SIZE_T
     int      size;
+#else
+    size_t   size;
+#endif
     enum AVPacketSideDataType type;
 } AVPacketSideData;
 
-- 
2.26.2