X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavformat%2Futils.c;h=481760b5ad631383732a9569730000dd4948df5a;hb=31f16dc1a16671a32c7aad45a0e0c38d2b0c74e8;hp=fc8b770a85b93e0967a1167104871235e58aa23b;hpb=7709ce029a7bc101b9ac1ceee607cda10dcb89dc;p=ffmpeg

diff --git a/libavformat/utils.c b/libavformat/utils.c
index fc8b770a85b..481760b5ad6 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -2135,6 +2135,36 @@ enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
     return AV_CODEC_ID_NONE;
 }
 
+enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
+{
+    if (flt) {
+        switch (bps) {
+        case 32: return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
+        case 64: return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
+        default: return AV_CODEC_ID_NONE;
+        }
+    } else {
+        bps >>= 3;
+        if (sflags & (1 << (bps - 1))) {
+            switch (bps) {
+            case 1:  return AV_CODEC_ID_PCM_S8;
+            case 2:  return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
+            case 3:  return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
+            case 4:  return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
+            default: return AV_CODEC_ID_NONE;
+            }
+        } else {
+            switch (bps) {
+            case 1:  return AV_CODEC_ID_PCM_U8;
+            case 2:  return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
+            case 3:  return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
+            case 4:  return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
+            default: return AV_CODEC_ID_NONE;
+            }
+        }
+    }
+}
+
 unsigned int av_codec_get_tag(const AVCodecTag * const *tags, enum AVCodecID id)
 {
     int i;