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dcaparse: Add depth and endianness to the caps

Browse source 
Some decoders can only handle specific endianness or a fixed
depth and this allows better negotiation.

Fixes bug #644208.
This commit is contained in:
Sebastian Dröge 2011-03-14 18:25:25 +01:00 committed by Tim-Philipp Müller
parent 7d876727b3
commit bf9859ad61
2 changed files with 32 additions and 11 deletions
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41
gst/audioparsers/gstdcaparse.c
View file

@ -57,8 +57,12 @@ GST_DEBUG_CATEGORY_STATIC (dca_parse_debug);
static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-dts, framed = (boolean) true, "
" channels = (int) [ 1, 8 ], rate = (int) [ 8000, 192000 ]"));
GST_STATIC_CAPS ("audio/x-dts,"
" framed = (boolean) true,"
" channels = (int) [ 1, 8 ],"
" rate = (int) [ 8000, 192000 ],"
" depth = (int) { 14, 16 },"
" endianness = (int) { LITTLE_ENDIAN, BIG_ENDIAN }"));
static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
@ -114,6 +118,8 @@ gst_dca_parse_reset (GstDcaParse * dcaparse)
{
dcaparse->channels = -1;
dcaparse->rate = -1;
dcaparse->depth = -1;
dcaparse->endianness = -1;
dcaparse->last_sync = 0;
}
@ -154,7 +160,8 @@ gst_dca_parse_stop (GstBaseParse * parse)
static gboolean
gst_dca_parse_parse_header (GstDcaParse * dcaparse,
const GstByteReader * reader, guint * frame_size,
guint * sample_rate, guint * channels, guint * samples)
guint * sample_rate, guint * channels, guint * depth,
gint * endianness, guint * samples)
{
static const int sample_rates[16] = { 0, 8000, 16000, 32000, 0, 0, 11025,
22050, 44100, 0, 0, 12000, 24000, 48000, 96000, 192000
@ -229,6 +236,12 @@ gst_dca_parse_parse_header (GstDcaParse * dcaparse,
else
*channels = 0;
if (depth)
*depth = (marker == 0x1FFFE800 || marker == 0xFF1F00E8) ? 14 : 16;
if (endianness)
*endianness = (marker == 0xFE7F0180 || marker == 0xFF1F00E8) ?
G_LITTLE_ENDIAN : G_BIG_ENDIAN;
*samples = num_blocks * samples_per_block;
GST_TRACE_OBJECT (dcaparse, "frame size %u, channels %u, rate %u, samples %u",
@ -331,8 +344,8 @@ gst_dca_parse_check_valid_frame (GstBaseParse * parse,
}
/* make sure the values in the frame header look sane */
if (!gst_dca_parse_parse_header (dcaparse, &r, &size, &rate, &chans,
&samples)) {
if (!gst_dca_parse_parse_header (dcaparse, &r, &size, &rate, &chans, NULL,
NULL, &samples)) {
*skipsize = 4;
return FALSE;
}
@ -356,7 +369,8 @@ gst_dca_parse_check_valid_frame (GstBaseParse * parse,
gst_byte_reader_init_from_buffer (&r, buf);
gst_byte_reader_skip_unchecked (&r, size);
if (!gst_dca_parse_parse_header (dcaparse, &r, &s2, &r2, &c2, &n2)) {
if (!gst_dca_parse_parse_header (dcaparse, &r, &s2, &r2, &c2, NULL, NULL,
&n2)) {
GST_DEBUG_OBJECT (dcaparse, "didn't find second syncword");
*skipsize = 4;
return FALSE;
@ -383,24 +397,29 @@ gst_dca_parse_parse_frame (GstBaseParse * parse, GstBaseParseFrame * frame)
GstDcaParse *dcaparse = GST_DCA_PARSE (parse);
GstBuffer *buf = frame->buffer;
GstByteReader r = GST_BYTE_READER_INIT_FROM_BUFFER (buf);
guint size, rate, chans, samples;
guint size, rate, chans, depth, samples;
gint endianness;
if (!gst_dca_parse_parse_header (dcaparse, &r, &size, &rate, &chans,
&samples))
if (!gst_dca_parse_parse_header (dcaparse, &r, &size, &rate, &chans, &depth,
&endianness, &samples))
goto broken_header;
if (G_UNLIKELY (dcaparse->rate != rate || dcaparse->channels != chans)) {
if (G_UNLIKELY (dcaparse->rate != rate || dcaparse->channels != chans
|| dcaparse->depth != depth || dcaparse->endianness != endianness)) {
GstCaps *caps;
caps = gst_caps_new_simple ("audio/x-dts",
"framed", G_TYPE_BOOLEAN, TRUE,
"rate", G_TYPE_INT, rate, "channels", G_TYPE_INT, chans, NULL);
"rate", G_TYPE_INT, rate, "channels", G_TYPE_INT, chans,
"endianness", G_TYPE_INT, endianness, "depth", G_TYPE_INT, depth, NULL);
gst_buffer_set_caps (buf, caps);
gst_pad_set_caps (GST_BASE_PARSE_SRC_PAD (parse), caps);
gst_caps_unref (caps);
dcaparse->rate = rate;
dcaparse->channels = chans;
dcaparse->depth = depth;
dcaparse->endianness = endianness;
gst_base_parse_set_frame_props (parse, rate, samples, 0, 0);
}

2
gst/audioparsers/gstdcaparse.h
View file

@ -53,6 +53,8 @@ struct _GstDcaParse {
/*< private >*/
gint rate;
gint channels;
gint depth;
gint endianness;
guint32 last_sync;
};