avformat/utils: Move ff_add_param_change to demux_utils.c

Only demuxers have a need to add side-data to a packet.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

1 files changed, 54 insertions, 0 deletions

diff --git a/libavformat/demux_utils.c b/libavformat/demux_utils.c
index 1fd634d1a2..ffcadc1900 100644
--- a/libavformat/demux_utils.c
+++ b/libavformat/demux_utils.c
@@ -19,7 +19,10 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include "libavutil/version.h"
+
 #include "libavutil/avassert.h"
+#include "libavcodec/bytestream.h"
 #include "libavcodec/packet_internal.h"
 #include "avformat.h"
 #include "demux.h"
@@ -143,3 +146,54 @@ fail:
         ff_remove_stream(s, st);
     return ret;
 }
+
+int ff_add_param_change(AVPacket *pkt, int32_t channels,
+                        uint64_t channel_layout, int32_t sample_rate,
+                        int32_t width, int32_t height)
+{
+    uint32_t flags = 0;
+    int size = 4;
+    uint8_t *data;
+    if (!pkt)
+        return AVERROR(EINVAL);
+
+#if FF_API_OLD_CHANNEL_LAYOUT
+FF_DISABLE_DEPRECATION_WARNINGS
+    if (channels) {
+        size  += 4;
+        flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
+    }
+    if (channel_layout) {
+        size  += 8;
+        flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
+    }
+FF_ENABLE_DEPRECATION_WARNINGS
+#endif
+    if (sample_rate) {
+        size  += 4;
+        flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
+    }
+    if (width || height) {
+        size  += 8;
+        flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
+    }
+    data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
+    if (!data)
+        return AVERROR(ENOMEM);
+    bytestream_put_le32(&data, flags);
+#if FF_API_OLD_CHANNEL_LAYOUT
+FF_DISABLE_DEPRECATION_WARNINGS
+    if (channels)
+        bytestream_put_le32(&data, channels);
+    if (channel_layout)
+        bytestream_put_le64(&data, channel_layout);
+FF_ENABLE_DEPRECATION_WARNINGS
+#endif
+    if (sample_rate)
+        bytestream_put_le32(&data, sample_rate);
+    if (width || height) {
+        bytestream_put_le32(&data, width);
+        bytestream_put_le32(&data, height);
+    }
+    return 0;
+}