diff options
Diffstat (limited to 'gst/mpegaudioparse')
| -rw-r--r-- | gst/mpegaudioparse/gstmp3types.c | 28 |
1 files changed, 18 insertions, 10 deletions
diff --git a/gst/mpegaudioparse/gstmp3types.c b/gst/mpegaudioparse/gstmp3types.c index 1d74d472..cf5e860f 100644 --- a/gst/mpegaudioparse/gstmp3types.c +++ b/gst/mpegaudioparse/gstmp3types.c @@ -25,8 +25,8 @@ static GstCaps* mp3_type_find(GstBuffer *buf, gpointer private); static GstCaps* mp3_type_find_stream(GstBuffer *buf, gpointer private); static GstTypeDefinition mp3type_definitions[] = { - { "mp3types_audio/x-mp3", "audio/x-mp3", ".mp3 .mp2 .mp1 .mpga", mp3_type_find }, - { "mp3types_stream_audio/x-mp3", "audio/x-mp3", ".mp3 .mp2 .mp1 .mpga", mp3_type_find_stream }, + { "mp3types_audio/mpeg", "audio/mpeg", ".mp3 .mp2 .mp1 .mpga", mp3_type_find }, + { "mp3types_stream_audio/mpeg", "audio/mpeg", ".mp3 .mp2 .mp1 .mpga", mp3_type_find_stream }, { NULL, NULL, NULL, NULL }, }; @@ -34,7 +34,7 @@ static GstCaps* mp3_type_find(GstBuffer *buf, gpointer private) { guint8 *data; - gint size; + gint size, layer; guint32 head; GstCaps *caps; @@ -81,8 +81,9 @@ mp3_type_find(GstBuffer *buf, gpointer private) head = GUINT32_FROM_BE(*((guint32 *)data)); if ((head & 0xffe00000) != 0xffe00000) return NULL; - if (!((head >> 17) & 3)) + if (!(layer = ((head >> 17) & 3))) return NULL; + layer = 4 - layer; if (((head >> 12) & 0xf) == 0xf) return NULL; if (!((head >> 12) & 0xf)) @@ -90,7 +91,7 @@ mp3_type_find(GstBuffer *buf, gpointer private) if (((head >> 10) & 0x3) == 0x3) return NULL; - caps = gst_caps_new ("mp3_type_find", "audio/x-mp3", NULL); + caps = GST_CAPS_NEW ("mp3_type_find", "audio/mpeg", "layer", GST_PROPS_INT (layer)); return caps; } @@ -107,7 +108,7 @@ static guint mp3types_freqs[3][3] = {22050, 24000, 16000}, {11025, 12000, 8000}}; static inline guint -mp3_type_frame_length_from_header (guint32 header) +mp3_type_frame_length_from_header (guint32 header, guint *put_layer) { guint length; gulong samplerate, bitrate, layer, version; @@ -149,8 +150,9 @@ mp3_type_frame_length_from_header (guint32 header) GST_DEBUG ("Calculated mad frame length of %u bytes", length); GST_DEBUG ("samplerate = %lu - bitrate = %lu - layer = %lu - version = %lu", samplerate, bitrate, layer, version); + if (put_layer) + *put_layer = layer; return length; - } /* increase this value when this function finds too many false positives */ /** @@ -181,6 +183,7 @@ mp3_type_find_stream (GstBuffer *buf, gpointer private) guint8 *data; guint size; guint32 head; + gint layer = 0; data = GST_BUFFER_DATA (buf); size = GST_BUFFER_SIZE (buf); @@ -188,11 +191,15 @@ mp3_type_find_stream (GstBuffer *buf, gpointer private) while (size >= 4) { head = GUINT32_FROM_BE(*((guint32 *)data)); if ((head & 0xffe00000) == 0xffe00000) { - guint pos = 0; guint length; + guint prev_layer = 0; guint found = 0; /* number of valid headers found */ + guint pos = 0; do { - if ((length = mp3_type_frame_length_from_header (head))) { + if ((length = mp3_type_frame_length_from_header (head, &layer))) { + if (prev_layer && prev_layer != layer) + break; + prev_layer = layer; pos += length; found++; if (pos + 4 >= size) { @@ -214,7 +221,8 @@ mp3_type_find_stream (GstBuffer *buf, gpointer private) return NULL; success: - return gst_caps_new ("mp3_type_find", "audio/x-mp3", NULL); + g_assert (layer); + return GST_CAPS_NEW ("mp3_type_find", "audio/mpeg", "layer", GST_PROPS_INT (layer)); } static gboolean |