wavdec: RIFX file format support

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Changelog

@@ -5,6 +5,7 @@ version <next>:
 - nvenc encoder
 - 10bit spp filter
 - colorlevels filter
+- RIFX format for *.wav files
 
 
 version 2.5:

libavformat/act.c

@@ -75,7 +75,7 @@ static int read_header(AVFormatContext *s)
 
     avio_skip(pb, 16);
     size=avio_rl32(pb);
-    ff_get_wav_header(pb, st->codec, size);
+    ff_get_wav_header(pb, st->codec, size, 0);
 
     /*
       8000Hz (Fine-rec) file format has 10 bytes long

libavformat/asfdec.c

@@ -423,7 +423,7 @@ static int asf_read_stream_properties(AVFormatContext *s, int64_t size)
 
     st->codec->codec_type = type;
     if (type == AVMEDIA_TYPE_AUDIO) {
-        int ret = ff_get_wav_header(pb, st->codec, type_specific_size);
+        int ret = ff_get_wav_header(pb, st->codec, type_specific_size, 0);
         if (ret < 0)
             return ret;
         if (is_dvr_ms_audio) {

libavformat/avidec.c

@@ -794,7 +794,7 @@ static int avi_read_header(AVFormatContext *s)
 //                    avio_skip(pb, size - 5 * 4);
                     break;
                 case AVMEDIA_TYPE_AUDIO:
-                    ret = ff_get_wav_header(pb, st->codec, size);
+                    ret = ff_get_wav_header(pb, st->codec, size, 0);
                     if (ret < 0)
                         return ret;
                     ast->dshow_block_align = st->codec->block_align;

libavformat/dxa.c

@@ -106,7 +106,7 @@ static int dxa_read_header(AVFormatContext *s)
         ast = avformat_new_stream(s, NULL);
         if (!ast)
             return AVERROR(ENOMEM);
-        ret = ff_get_wav_header(pb, ast->codec, fsize);
+        ret = ff_get_wav_header(pb, ast->codec, fsize, 0);
         if (ret < 0)
             return ret;
         if (ast->codec->sample_rate > 0)

libavformat/matroskadec.c

@@ -1715,7 +1715,7 @@ static int matroska_parse_tracks(AVFormatContext *s)
             ffio_init_context(&b, track->codec_priv.data,
                               track->codec_priv.size,
                               0, NULL, NULL, NULL, NULL);
-            ret = ff_get_wav_header(&b, st->codec, track->codec_priv.size);
+            ret = ff_get_wav_header(&b, st->codec, track->codec_priv.size, 0);
             if (ret < 0)
                 return ret;
             codec_id         = st->codec->codec_id;

libavformat/mlvdec.c

@@ -142,7 +142,7 @@ static int scan_file(AVFormatContext *avctx, AVStream *vst, AVStream *ast, int f
             vst->codec->codec_tag = MKTAG('B', 'I', 'T', 16);
             size -= 164;
         } else if (ast && type == MKTAG('W', 'A', 'V', 'I') && size >= 16) {
-            ret = ff_get_wav_header(pb, ast->codec, 16);
+            ret = ff_get_wav_header(pb, ast->codec, 16, 0);
             if (ret < 0)
                 return ret;
             size -= 16;

libavformat/mov.c

@@ -714,7 +714,7 @@ static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
         return 0;
     st = c->fc->streams[c->fc->nb_streams-1];
 
-    if ((ret = ff_get_wav_header(pb, st->codec, atom.size)) < 0)
+    if ((ret = ff_get_wav_header(pb, st->codec, atom.size, 0)) < 0)
         av_log(c->fc, AV_LOG_WARNING, "get_wav_header failed\n");
 
     return ret;

libavformat/riff.h

@@ -62,7 +62,7 @@ void ff_put_bmp_header(AVIOContext *pb, AVCodecContext *enc, const AVCodecTag *t
 int ff_put_wav_header(AVIOContext *pb, AVCodecContext *enc, int flags);
 
 enum AVCodecID ff_wav_codec_get_id(unsigned int tag, int bps);
-int ff_get_wav_header(AVIOContext *pb, AVCodecContext *codec, int size);
+int ff_get_wav_header(AVIOContext *pb, AVCodecContext *codec, int size, int big_endian);
 
 extern const AVCodecTag ff_codec_bmp_tags[]; // exposed through avformat_get_riff_video_tags()
 extern const AVCodecTag ff_codec_wav_tags[];

libavformat/riffdec.c

@@ -80,23 +80,37 @@ static void parse_waveformatex(AVIOContext *pb, AVCodecContext *c)
     }
 }
 
-int ff_get_wav_header(AVIOContext *pb, AVCodecContext *codec, int size)
+/* "big_endian" values are needed for RIFX file format */
+int ff_get_wav_header(AVIOContext *pb, AVCodecContext *codec, int size, int big_endian)
 {
     int id;
 
     if (size < 14)
         avpriv_request_sample(codec, "wav header size < 14");
 
-    id                 = avio_rl16(pb);
     codec->codec_type  = AVMEDIA_TYPE_AUDIO;
+    if (!big_endian) {
+        id                 = avio_rl16(pb);
         codec->channels    = avio_rl16(pb);
         codec->sample_rate = avio_rl32(pb);
         codec->bit_rate    = avio_rl32(pb) * 8;
         codec->block_align = avio_rl16(pb);
+    } else {
+        id                 = avio_rb16(pb);
+        codec->channels    = avio_rb16(pb);
+        codec->sample_rate = avio_rb32(pb);
+        codec->bit_rate    = avio_rb32(pb) * 8;
+        codec->block_align = avio_rb16(pb);
+    }
     if (size == 14) {  /* We're dealing with plain vanilla WAVEFORMAT */
         codec->bits_per_coded_sample = 8;
-    } else
+    } else {
+        if (!big_endian) {
             codec->bits_per_coded_sample = avio_rl16(pb);
+        } else {
+            codec->bits_per_coded_sample = avio_rb16(pb);
+        }
+    }
     if (id == 0xFFFE) {
         codec->codec_tag = 0;
     } else {
@@ -106,6 +120,10 @@ int ff_get_wav_header(AVIOContext *pb, AVCodecContext *codec, int size)
     }
     if (size >= 18) {  /* We're obviously dealing with WAVEFORMATEX */
         int cbSize = avio_rl16(pb); /* cbSize */
+        if (big_endian) {
+            avpriv_report_missing_feature(codec, "WAVEFORMATEX support for RIFX files\n");
+            return AVERROR_PATCHWELCOME;
+        }
         size  -= 18;
         cbSize = FFMIN(size, cbSize);
         if (cbSize >= 22 && id == 0xfffe) { /* WAVEFORMATEXTENSIBLE */

libavformat/version.h

@@ -31,7 +31,7 @@
 
 #define LIBAVFORMAT_VERSION_MAJOR 56
 #define LIBAVFORMAT_VERSION_MINOR  15
-#define LIBAVFORMAT_VERSION_MICRO 105
+#define LIBAVFORMAT_VERSION_MICRO 106
 
 #define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
                                                LIBAVFORMAT_VERSION_MINOR, \

libavformat/wavdec.c

@@ -57,14 +57,19 @@ typedef struct WAVDemuxContext {
     int smv_cur_pt;
     int smv_given_first;
     int unaligned; // e.g. if an odd number of bytes ID3 tag was prepended
+    int rifx; // RIFX: integer byte order for parameters is big endian
 } WAVDemuxContext;
 
 #if CONFIG_WAV_DEMUXER
 
-static int64_t next_tag(AVIOContext *pb, uint32_t *tag)
+static int64_t next_tag(AVIOContext *pb, uint32_t *tag, int big_endian)
 {
     *tag = avio_rl32(pb);
+    if (!big_endian) {
         return avio_rl32(pb);
+    } else {
+        return avio_rb32(pb);
+    }
 }
 
 /* RIFF chunks are always at even offsets relative to where they start. */
@@ -84,7 +89,7 @@ static int64_t find_tag(WAVDemuxContext * wav, AVIOContext *pb, uint32_t tag1)
     for (;;) {
         if (avio_feof(pb))
             return AVERROR_EOF;
-        size = next_tag(pb, &tag);
+        size = next_tag(pb, &tag, wav->rifx);
         if (tag == tag1)
             break;
         wav_seek_tag(wav, pb, size, SEEK_CUR);
@@ -98,7 +103,7 @@ static int wav_probe(AVProbeData *p)
     if (p->buf_size <= 32)
         return 0;
     if (!memcmp(p->buf + 8, "WAVE", 4)) {
-        if (!memcmp(p->buf, "RIFF", 4))
+        if (!memcmp(p->buf, "RIFF", 4) || !memcmp(p->buf, "RIFX", 4))
             /* Since the ACT demuxer has a standard WAV header at the top of
              * its own, the returned score is decreased to avoid a probe
              * conflict between ACT and WAV. */
@@ -121,6 +126,7 @@ static void handle_stream_probing(AVStream *st)
 static int wav_parse_fmt_tag(AVFormatContext *s, int64_t size, AVStream **st)
 {
     AVIOContext *pb = s->pb;
+    WAVDemuxContext *wav = s->priv_data;
     int ret;
 
     /* parse fmt header */
@@ -128,7 +134,7 @@ static int wav_parse_fmt_tag(AVFormatContext *s, int64_t size, AVStream **st)
     if (!*st)
         return AVERROR(ENOMEM);
 
-    ret = ff_get_wav_header(pb, (*st)->codec, size);
+    ret = ff_get_wav_header(pb, (*st)->codec, size, wav->rifx);
     if (ret < 0)
         return ret;
     handle_stream_probing(*st);
@@ -258,7 +264,8 @@ static int wav_read_header(AVFormatContext *s)
     tag = avio_rl32(pb);
 
     rf64 = tag == MKTAG('R', 'F', '6', '4');
-    if (!rf64 && tag != MKTAG('R', 'I', 'F', 'F'))
+    wav->rifx = tag == MKTAG('R', 'I', 'F', 'X');
+    if (!rf64 && !wav->rifx && tag != MKTAG('R', 'I', 'F', 'F'))
         return AVERROR_INVALIDDATA;
     avio_rl32(pb); /* file size */
     tag = avio_rl32(pb);
@@ -288,7 +295,7 @@ static int wav_read_header(AVFormatContext *s)
 
     for (;;) {
         AVStream *vst;
-        size         = next_tag(pb, &tag);
+        size         = next_tag(pb, &tag, wav->rifx);
         next_tag_ofs = avio_tell(pb) + size;
 
         if (avio_feof(pb))
@@ -328,7 +335,7 @@ static int wav_read_header(AVFormatContext *s)
             break;
         case MKTAG('f', 'a', 'c', 't'):
             if (!sample_count)
-                sample_count = avio_rl32(pb);
+                sample_count = (!wav->rifx ? avio_rl32(pb) : avio_rb32(pb));
             break;
         case MKTAG('b', 'e', 'x', 't'):
             if ((ret = wav_parse_bext_tag(s, size)) < 0)
@@ -662,7 +669,7 @@ static int w64_read_header(AVFormatContext *s)
 
         if (!memcmp(guid, ff_w64_guid_fmt, 16)) {
             /* subtract chunk header size - normal wav file doesn't count it */
-            ret = ff_get_wav_header(pb, st->codec, size - 24);
+            ret = ff_get_wav_header(pb, st->codec, size - 24, 0);
             if (ret < 0)
                 return ret;
             avio_skip(pb, FFALIGN(size, INT64_C(8)) - size);

libavformat/wtvdec.c

@@ -670,7 +670,7 @@ static AVStream * parse_media_type(AVFormatContext *s, AVStream *st, int sid,
         if (!st)
             return NULL;
         if (!ff_guidcmp(formattype, ff_format_waveformatex)) {
-            int ret = ff_get_wav_header(pb, st->codec, size);
+            int ret = ff_get_wav_header(pb, st->codec, size, 0);
             if (ret < 0)
                 return NULL;
         } else {

libavformat/xwma.c

@@ -75,7 +75,7 @@ static int xwma_read_header(AVFormatContext *s)
     if (!st)
         return AVERROR(ENOMEM);
 
-    ret = ff_get_wav_header(pb, st->codec, size);
+    ret = ff_get_wav_header(pb, st->codec, size, 0);
     if (ret < 0)
         return ret;
     st->need_parsing = AVSTREAM_PARSE_NONE;