Rewrite h261_probe().
[ffmpeg.git] / libavformat / bethsoftvid.c
index 91fecb5..e599255 100644 (file)
  */
 
 /**
- * @file bethsoftvid.c
+ * @file libavformat/bethsoftvid.c
  * @brief Bethesda Softworks VID (.vid) file demuxer
  * @author Nicholas Tung [ntung (at. ntung com] (2007-03)
  * @sa http://wiki.multimedia.cx/index.php?title=Bethsoft_VID
  * @sa http://www.svatopluk.com/andux/docs/dfvid.html
  */
 
+#include "libavutil/intreadwrite.h"
 #include "avformat.h"
-#include "bethsoftvideo.h"
+#include "libavcodec/bethsoftvideo.h"
 
 typedef struct BVID_DemuxContext
 {
@@ -49,7 +50,7 @@ typedef struct BVID_DemuxContext
 static int vid_probe(AVProbeData *p)
 {
     // little endian VID tag, file starts with "VID\0"
-    if (p->buf_size < 4 || AV_RL32(p->buf) != MKTAG('V', 'I', 'D', 0))
+    if (AV_RL32(p->buf) != MKTAG('V', 'I', 'D', 0))
         return 0;
 
     return AVPROBE_SCORE_MAX;
@@ -59,7 +60,7 @@ static int vid_read_header(AVFormatContext *s,
                             AVFormatParameters *ap)
 {
     BVID_DemuxContext *vid = s->priv_data;
-    ByteIOContext *pb = &s->pb;
+    ByteIOContext *pb = s->pb;
     AVStream *stream;
 
     /* load main header. Contents:
@@ -71,7 +72,7 @@ static int vid_read_header(AVFormatContext *s,
 
     stream = av_new_stream(s, 0);
     if (!stream)
-        return AVERROR_NOMEM;
+        return AVERROR(ENOMEM);
     av_set_pts_info(stream, 32, 1, 60);     // 16 ms increments, i.e. 60 fps
     stream->codec->codec_type = CODEC_TYPE_VIDEO;
     stream->codec->codec_id = CODEC_ID_BETHSOFTVID;
@@ -84,13 +85,13 @@ static int vid_read_header(AVFormatContext *s,
     // done with video codec, set up audio codec
     stream = av_new_stream(s, 0);
     if (!stream)
-        return AVERROR_NOMEM;
+        return AVERROR(ENOMEM);
     stream->codec->codec_type = CODEC_TYPE_AUDIO;
     stream->codec->codec_id = CODEC_ID_PCM_U8;
     stream->codec->channels = 1;
     stream->codec->sample_rate = 11025;
-    stream->codec->bits_per_sample = 8;
-    stream->codec->bit_rate = stream->codec->channels * stream->codec->sample_rate * stream->codec->bits_per_sample;
+    stream->codec->bits_per_coded_sample = 8;
+    stream->codec->bit_rate = stream->codec->channels * stream->codec->sample_rate * stream->codec->bits_per_coded_sample;
 
     return 0;
 }
@@ -104,11 +105,11 @@ static int read_frame(BVID_DemuxContext *vid, ByteIOContext *pb, AVPacket *pkt,
     int code;
     int bytes_copied = 0;
     int position;
-    size_t vidbuf_capacity;
+    unsigned int vidbuf_capacity;
 
     vidbuf_start = av_malloc(vidbuf_capacity = BUFFER_PADDING_SIZE);
     if(!vidbuf_start)
-        return AVERROR_NOMEM;
+        return AVERROR(ENOMEM);
 
     // save the file position for the packet, include block type
     position = url_ftell(pb) - 1;
@@ -128,7 +129,7 @@ static int read_frame(BVID_DemuxContext *vid, ByteIOContext *pb, AVPacket *pkt,
     do{
         vidbuf_start = av_fast_realloc(vidbuf_start, &vidbuf_capacity, vidbuf_nbytes + BUFFER_PADDING_SIZE);
         if(!vidbuf_start)
-            return AVERROR_NOMEM;
+            return AVERROR(ENOMEM);
 
         code = get_byte(pb);
         vidbuf_start[vidbuf_nbytes++] = code;
@@ -173,13 +174,13 @@ static int vid_read_packet(AVFormatContext *s,
                            AVPacket *pkt)
 {
     BVID_DemuxContext *vid = s->priv_data;
-    ByteIOContext *pb = &s->pb;
+    ByteIOContext *pb = s->pb;
     unsigned char block_type;
     int audio_length;
     int ret_value;
 
     if(vid->is_finished || url_feof(pb))
-        return AVERROR_IO;
+        return AVERROR(EIO);
 
     block_type = get_byte(pb);
     switch(block_type){
@@ -188,7 +189,7 @@ static int vid_read_packet(AVFormatContext *s,
             ret_value = av_get_packet(pb, pkt, 3 * 256 + 1);
             if(ret_value != 3 * 256 + 1){
                 av_free_packet(pkt);
-                return AVERROR_IO;
+                return AVERROR(EIO);
             }
             pkt->stream_index = 0;
             return ret_value;
@@ -197,12 +198,12 @@ static int vid_read_packet(AVFormatContext *s,
             get_le16(pb);
             // soundblaster DAC used for sample rate, as on specification page (link above)
             s->streams[1]->codec->sample_rate = 1000000 / (256 - get_byte(pb));
-            s->streams[1]->codec->bit_rate = s->streams[1]->codec->channels * s->streams[1]->codec->sample_rate * s->streams[1]->codec->bits_per_sample;
+            s->streams[1]->codec->bit_rate = s->streams[1]->codec->channels * s->streams[1]->codec->sample_rate * s->streams[1]->codec->bits_per_coded_sample;
         case AUDIO_BLOCK:
             audio_length = get_le16(pb);
             ret_value = av_get_packet(pb, pkt, audio_length);
             pkt->stream_index = 1;
-            return (ret_value != audio_length ? AVERROR_IO : ret_value);
+            return ret_value != audio_length ? AVERROR(EIO) : ret_value;
 
         case VIDEO_P_FRAME:
         case VIDEO_YOFF_P_FRAME:
@@ -214,7 +215,7 @@ static int vid_read_packet(AVFormatContext *s,
             if(vid->nframes != 0)
                 av_log(s, AV_LOG_VERBOSE, "reached terminating character but not all frames read.\n");
             vid->is_finished = 1;
-            return AVERROR_IO;
+            return AVERROR(EIO);
         default:
             av_log(s, AV_LOG_ERROR, "unknown block (character = %c, decimal = %d, hex = %x)!!!\n",
                    block_type, block_type, block_type); return -1;
@@ -225,7 +226,7 @@ static int vid_read_packet(AVFormatContext *s,
 
 AVInputFormat bethsoftvid_demuxer = {
     "bethsoftvid",
-    "Bethesda Softworks 'Daggerfall' VID format",
+    NULL_IF_CONFIG_SMALL("Bethesda Softworks VID format"),
     sizeof(BVID_DemuxContext),
     vid_probe,
     vid_read_header,