lavc/libkvazaar: fix incompatible pointer type.
[ffmpeg.git] / libavformat / filmstripdec.c
index 805ca99..0bf5a80 100644 (file)
  */
 
 #include "libavutil/intreadwrite.h"
+#include "libavutil/imgutils.h"
 #include "avformat.h"
+#include "internal.h"
 
 #define RAND_TAG MKBETAG('R','a','n','d')
 
-typedef struct {
+typedef struct FilmstripDemuxContext {
     int leading;
 } FilmstripDemuxContext;
 
-static int read_header(AVFormatContext *s,
-                       AVFormatParameters *ap)
+static int read_header(AVFormatContext *s)
 {
     FilmstripDemuxContext *film = s->priv_data;
-    ByteIOContext *pb = s->pb;
+    AVIOContext *pb = s->pb;
     AVStream *st;
 
-    if (url_is_streamed(s->pb))
+    if (!(s->pb->seekable & AVIO_SEEKABLE_NORMAL))
         return AVERROR(EIO);
 
-    url_fseek(pb, url_fsize(pb) - 36, SEEK_SET);
-    if (get_be32(pb) != RAND_TAG) {
-        av_log(s, AV_LOG_ERROR, "magic number not found");
+    avio_seek(pb, avio_size(pb) - 36, SEEK_SET);
+    if (avio_rb32(pb) != RAND_TAG) {
+        av_log(s, AV_LOG_ERROR, "magic number not found\n");
         return AVERROR_INVALIDDATA;
     }
 
-    st = av_new_stream(s, 0);
+    st = avformat_new_stream(s, NULL);
     if (!st)
         return AVERROR(ENOMEM);
 
-    st->nb_frames = get_be32(pb);
-    if (get_be16(pb) != 0) {
-        av_log_ask_for_sample(s, "unsupported packing method\n");
-        return AVERROR_INVALIDDATA;
+    st->nb_frames = avio_rb32(pb);
+    if (avio_rb16(pb) != 0) {
+        avpriv_request_sample(s, "Unsupported packing method");
+        return AVERROR_PATCHWELCOME;
     }
 
-    url_fskip(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_tag  = 0; /* no fourcc */
-    st->codec->width      = get_be16(pb);
-    st->codec->height     = get_be16(pb);
-    film->leading         = get_be16(pb);
-    av_set_pts_info(st, 64, 1, get_be16(pb));
+    avio_skip(pb, 2);
+    st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
+    st->codecpar->codec_id   = AV_CODEC_ID_RAWVIDEO;
+    st->codecpar->format     = AV_PIX_FMT_RGBA;
+    st->codecpar->codec_tag  = 0; /* no fourcc */
+    st->codecpar->width      = avio_rb16(pb);
+    st->codecpar->height     = avio_rb16(pb);
+    film->leading         = avio_rb16(pb);
+
+    if (av_image_check_size(st->codecpar->width, st->codecpar->height, 0, s) < 0)
+        return AVERROR_INVALIDDATA;
+
+    avpriv_set_pts_info(st, 64, 1, avio_rb16(pb));
 
-    url_fseek(pb, 0, SEEK_SET);
+    avio_seek(pb, 0, SEEK_SET);
 
     return 0;
 }
@@ -80,11 +85,11 @@ static int read_packet(AVFormatContext *s,
     FilmstripDemuxContext *film = s->priv_data;
     AVStream *st = s->streams[0];
 
-    if (url_feof(s->pb))
+    if (avio_feof(s->pb))
         return AVERROR(EIO);
-    pkt->dts = url_ftell(s->pb) / (st->codec->width * (st->codec->height + film->leading) * 4);
-    pkt->size = av_get_packet(s->pb, pkt, st->codec->width * st->codec->height * 4);
-    url_fskip(s->pb, st->codec->width * film->leading * 4);
+    pkt->dts = avio_tell(s->pb) / (st->codecpar->width * (int64_t)(st->codecpar->height + film->leading) * 4);
+    pkt->size = av_get_packet(s->pb, pkt, st->codecpar->width * st->codecpar->height * 4);
+    avio_skip(s->pb, st->codecpar->width * (int64_t) film->leading * 4);
     if (pkt->size < 0)
         return pkt->size;
     pkt->flags |= AV_PKT_FLAG_KEY;
@@ -94,18 +99,17 @@ 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];
-    url_fseek(s->pb, FFMAX(timestamp, 0) * st->codec->width * st->codec->height * 4, SEEK_SET);
+    if (avio_seek(s->pb, FFMAX(timestamp, 0) * st->codecpar->width * st->codecpar->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",
 };