riff: Factor out WAVEFORMATEX parsing

[ffmpeg] / libavformat / filmstripdec.c

diff --git a/libavformat/filmstripdec.c b/libavformat/filmstripdec.c
index 9af8e745d633336fdea40dcef6c46cf6d97e08e0..3fa68424b7ecdd6f3aec09444b2e8b8e18b11745 100644 (file)
--- a/libavformat/filmstripdec.c
+++ b/libavformat/filmstripdec.c
@@ -26,6 +26,7 @@
 
 #include "libavutil/intreadwrite.h"
 #include "avformat.h"
+#include "internal.h"
 
 #define RAND_TAG MKBETAG('R','a','n','d')
 
@@ -33,14 +34,13 @@ typedef struct {
     int leading;
 } FilmstripDemuxContext;
 
-static int read_header(AVFormatContext *s,
-                       AVFormatParameters *ap)
+static int read_header(AVFormatContext *s)
 {
     FilmstripDemuxContext *film = s->priv_data;
     AVIOContext *pb = s->pb;
     AVStream *st;
 
-    if (url_is_streamed(s->pb))
+    if (!s->pb->seekable)
         return AVERROR(EIO);
 
     avio_seek(pb, avio_size(pb) - 36, SEEK_SET);
@@ -49,25 +49,25 @@ static int read_header(AVFormatContext *s,
         return AVERROR_INVALIDDATA;
     }
 
-    st = av_new_stream(s, 0);
+    st = avformat_new_stream(s, NULL);
     if (!st)
         return AVERROR(ENOMEM);
 
     st->nb_frames = avio_rb32(pb);
     if (avio_rb16(pb) != 0) {
-        av_log_ask_for_sample(s, "unsupported packing method\n");
-        return AVERROR_INVALIDDATA;
+        avpriv_request_sample(s, "Unsupported packing method");
+        return AVERROR_PATCHWELCOME;
     }
 
     avio_skip(pb, 2);
     st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
-    st->codec->codec_id   = CODEC_ID_RAWVIDEO;
-    st->codec->pix_fmt    = PIX_FMT_RGBA;
+    st->codec->codec_id   = AV_CODEC_ID_RAWVIDEO;
+    st->codec->pix_fmt    = AV_PIX_FMT_RGBA;
     st->codec->codec_tag  = 0; /* no fourcc */
     st->codec->width      = avio_rb16(pb);
     st->codec->height     = avio_rb16(pb);
     film->leading         = avio_rb16(pb);
-    av_set_pts_info(st, 64, 1, avio_rb16(pb));
+    avpriv_set_pts_info(st, 64, 1, avio_rb16(pb));
 
     avio_seek(pb, 0, SEEK_SET);
 
@@ -94,18 +94,17 @@ static int read_packet(AVFormatContext *s,
 static int read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
 {
     AVStream *st = s->streams[stream_index];
-    avio_seek(s->pb, FFMAX(timestamp, 0) * st->codec->width * st->codec->height * 4, SEEK_SET);
+    if (avio_seek(s->pb, FFMAX(timestamp, 0) * st->codec->width * st->codec->height * 4, SEEK_SET) < 0)
+        return -1;
     return 0;
 }
 
 AVInputFormat ff_filmstrip_demuxer = {
-    "filmstrip",
-    NULL_IF_CONFIG_SMALL("Adobe Filmstrip"),
-    sizeof(FilmstripDemuxContext),
-    NULL,
-    read_header,
-    read_packet,
-    NULL,
-    read_seek,
-    .extensions = "flm",
+    .name           = "filmstrip",
+    .long_name      = NULL_IF_CONFIG_SMALL("Adobe Filmstrip"),
+    .priv_data_size = sizeof(FilmstripDemuxContext),
+    .read_header    = read_header,
+    .read_packet    = read_packet,
+    .read_seek      = read_seek,
+    .extensions     = "flm",
 };