[FFmpeg-devel] [PATCH v2 4/8] avformat/mov: fix ISO/IEC 23003-5 support

[Zhao Zhili <quinkblack@foxmail.com>]

From: Zhao Zhili <zhilizhao@tencent.com>

Missing floating-point formats support.

Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>
---
 libavformat/mov.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)

diff --git a/libavformat/mov.c b/libavformat/mov.c
index a9911c0f79..e75cf2f4b7 100644
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -1591,6 +1591,10 @@ static int mov_read_pcmc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
 {
     int format_flags;
     int version, flags;
+    int pcm_sample_size;
+    AVFormatContext *fc = c->fc;
+    AVStream *st;
+    MOVStreamContext *sc;
 
     if (atom.size < 6) {
         av_log(c->fc, AV_LOG_ERROR, "Empty pcmC box\n");
@@ -1608,6 +1612,49 @@ static int mov_read_pcmc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
     }
 
     format_flags = avio_r8(pb);
+    pcm_sample_size = avio_r8(pb);
+
+    if (fc->nb_streams < 1)
+        return AVERROR_INVALIDDATA;
+
+    st = fc->streams[fc->nb_streams - 1];
+    sc = st->priv_data;
+
+    if (sc->format == MKTAG('f', 'p', 'c', 'm')) {
+        switch (pcm_sample_size) {
+        case 32:
+            st->codecpar->codec_id = AV_CODEC_ID_PCM_F32BE;
+            break;
+        case 64:
+            st->codecpar->codec_id = AV_CODEC_ID_PCM_F64BE;
+            break;
+        default:
+            av_log(fc, AV_LOG_ERROR, "invalid pcm_sample_size %d for 'fpcm'\n",
+                                     pcm_sample_size);
+            return AVERROR_INVALIDDATA;
+        }
+    } else if (sc->format == MKTAG('i', 'p', 'c', 'm')) {
+        switch (pcm_sample_size) {
+        case 16:
+            st->codecpar->codec_id = AV_CODEC_ID_PCM_S16BE;
+            break;
+        case 24:
+            st->codecpar->codec_id = AV_CODEC_ID_PCM_S24BE;
+            break;
+        case 32:
+            st->codecpar->codec_id = AV_CODEC_ID_PCM_S32BE;
+            break;
+        default:
+            av_log(fc, AV_LOG_ERROR, "invalid pcm_sample_size %d for 'ipcm'\n",
+                                     pcm_sample_size);
+            return AVERROR_INVALIDDATA;
+        }
+    } else {
+        av_log(fc, AV_LOG_ERROR, "'pcmC' with invalid sample entry '%s'\n",
+                av_fourcc2str(sc->format));
+        return AVERROR_INVALIDDATA;
+    }
+
     if (format_flags & 1) // indicates little-endian format. If not present, big-endian format is used
         set_last_stream_little_endian(c->fc);
 
-- 
2.34.1

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