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gst-libs/gst/audio/multichannel.c: Minor docs fix.
Original commit message from CVS: * gst-libs/gst/audio/multichannel.c: Minor docs fix. * gst-libs/gst/riff/Makefile.am: * gst-libs/gst/riff/riff-ids.h: * gst-libs/gst/riff/riff-media.c: (gst_riff_wavext_add_channel_layout), (gst_riff_create_audio_caps): Add support for WAVEFORMATEX, eg. PCM audio with more than two channels and a channel layout map.
This commit is contained in:
Tim-Philipp Müller
parent
ced6e8445a
commit
9490d413c0
5 changed files with 167 additions and 3 deletions
12
ChangeLog
12
ChangeLog
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@ -1,3 +1,15 @@
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2006-02-16 Tim-Philipp Müller <tim at centricular dot net>
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* gst-libs/gst/audio/multichannel.c:
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Minor docs fix.
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* gst-libs/gst/riff/Makefile.am:
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* gst-libs/gst/riff/riff-ids.h:
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* gst-libs/gst/riff/riff-media.c:
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(gst_riff_wavext_add_channel_layout), (gst_riff_create_audio_caps):
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Add support for WAVEFORMATEX, eg. PCM audio with more than two
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channels and a channel layout map.
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2006-02-16 Mathieu Garcia <b0nk at free dot fr>
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Reviewed by Edward Hervey <edward@fluendo.com>
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@ -265,7 +265,7 @@ gst_audio_get_channel_positions (GstStructure * str)
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/**
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* gst_audio_set_channel_positions:
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* @str: A #GstStructure to retrieve channel positions from.
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* @str: A #GstStructure to set channel positions on.
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* @pos: an array of channel positions. The number of members
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* in this array should be equal to the (fixed!) number
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* of the "channels" property in the given #GstStructure.
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@ -11,6 +11,7 @@ libgstriff_@GST_MAJORMINOR@include_HEADERS = \
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riff-media.h \
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riff-read.h
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libgstriff_@GST_MAJORMINOR@_la_LIBADD = $(GST_LIBS)
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libgstriff_@GST_MAJORMINOR@_la_CFLAGS = $(GST_CFLAGS)
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libgstriff_@GST_MAJORMINOR@_la_LIBADD = $(GST_BASE_LIBS) $(GST_LIBS) \
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$(top_builddir)/gst-libs/gst/audio/libgstaudio-@GST_MAJORMINOR@.la
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libgstriff_@GST_MAJORMINOR@_la_CFLAGS = $(GST_BASE_CFLAGS) $(GST_CFLAGS)
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libgstriff_@GST_MAJORMINOR@_la_LDFLAGS = $(GST_LIB_LDFLAGS) $(GST_ALL_LDFLAGS) $(GST_LT_LDFLAGS)
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@ -298,6 +298,7 @@ typedef struct _gst_riff_strf_auds { /* == WaveHeader (?) */
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#define GST_RIFF_WAVE_FORMAT_VORBIS3PLUS (0x6771)
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#define GST_RIFF_WAVE_FORMAT_GSM_AMR_CBR (0x7A21)
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#define GST_RIFF_WAVE_FORMAT_GSM_AMR_VBR (0x7A22)
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#define GST_RIFF_WAVE_FORMAT_EXTENSIBLE (0xFFFE)
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guint16 channels;
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guint32 rate;
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guint32 av_bps;
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@ -26,6 +26,13 @@
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#include "riff-ids.h"
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#include "riff-media.h"
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#include <gst/audio/multichannel.h>
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#include <string.h>
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GST_DEBUG_CATEGORY_EXTERN (riff_debug);
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#define GST_CAT_DEFAULT riff_debug
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/**
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* gst_riff_create_video_caps_with_data:
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* @codec_fcc: fourCC codec for this codec.
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@ -550,6 +557,85 @@ gst_riff_create_video_caps (guint32 codec_fcc,
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return caps;
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}
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static const struct
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{
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const guint32 ms_mask;
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const GstAudioChannelPosition gst_pos;
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} layout_mapping[] = {
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{
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0x00001, GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT}, {
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0x00002, GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT}, {
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0x00004, GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER}, {
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0x00008, GST_AUDIO_CHANNEL_POSITION_LFE}, {
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0x00010, GST_AUDIO_CHANNEL_POSITION_REAR_LEFT}, {
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0x00020, GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT}, {
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0x00040, GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER}, {
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0x00080, GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER}, {
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0x00100, GST_AUDIO_CHANNEL_POSITION_REAR_CENTER}, {
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0x00200, GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT}, {
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0x00400, GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT}, {
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0x00800, GST_AUDIO_CHANNEL_POSITION_INVALID}, /* TOP_CENTER */
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{
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0x01000, GST_AUDIO_CHANNEL_POSITION_INVALID}, /* TOP_FRONT_LEFT */
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{
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0x02000, GST_AUDIO_CHANNEL_POSITION_INVALID}, /* TOP_FRONT_CENTER */
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{
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0x04000, GST_AUDIO_CHANNEL_POSITION_INVALID}, /* TOP_FRONT_RIGHT */
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{
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0x08000, GST_AUDIO_CHANNEL_POSITION_INVALID}, /* TOP_BACK_LEFT */
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{
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0x10000, GST_AUDIO_CHANNEL_POSITION_INVALID}, /* TOP_BACK_CENTER */
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{
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0x20000, GST_AUDIO_CHANNEL_POSITION_INVALID} /* TOP_BACK_RIGHT */
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};
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#define MAX_CHANNEL_POSITIONS G_N_ELEMENTS (layout_mapping)
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static gboolean
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gst_riff_wavext_add_channel_layout (GstCaps * caps, guint32 layout)
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{
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GstAudioChannelPosition pos[MAX_CHANNEL_POSITIONS];
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GstStructure *s;
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gint num_channels, i, p;
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s = gst_caps_get_structure (caps, 0);
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if (!gst_structure_get_int (s, "channels", &num_channels))
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g_return_val_if_reached (FALSE);
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if (num_channels < 2 || num_channels > MAX_CHANNEL_POSITIONS) {
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GST_DEBUG ("invalid number of channels: %d", num_channels);
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return FALSE;
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}
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p = 0;
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for (i = 0; i < MAX_CHANNEL_POSITIONS; ++i) {
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if ((layout & layout_mapping[i].ms_mask) != 0) {
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if (p >= num_channels) {
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GST_WARNING ("More bits set in the channel layout map than there "
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"are channels! Broken file");
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return FALSE;
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}
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if (layout_mapping[i].gst_pos == GST_AUDIO_CHANNEL_POSITION_INVALID) {
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GST_WARNING ("Unsupported channel position (mask 0x%08x) in channel "
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"layout map - ignoring those channels", layout_mapping[i].ms_mask);
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/* what to do? just ignore it and let downstream deal with a channel
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* layout that has INVALID positions in it for now ... */
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}
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pos[p] = layout_mapping[i].gst_pos;
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++p;
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}
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}
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if (p != num_channels) {
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GST_WARNING ("Only %d bits set in the channel layout map, but there are "
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"supposed to be %d channels! Broken file", p, num_channels);
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return FALSE;
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}
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gst_audio_set_channel_positions (s, pos);
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return TRUE;
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}
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GstCaps *
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gst_riff_create_audio_caps (guint16 codec_id,
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gst_riff_strh * strh, gst_riff_strf_auds * strf,
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@ -586,6 +672,7 @@ gst_riff_create_audio_caps (guint16 codec_id,
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"width", G_TYPE_INT, (int) (ba * 8 / ch),
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"depth", G_TYPE_INT, ws, "signed", G_TYPE_BOOLEAN, ws != 8, NULL);
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} else {
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/* FIXME: this is pretty useless - we need fixed caps */
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caps = gst_caps_from_string ("audio/x-raw-int, "
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"endianness = (int) LITTLE_ENDIAN, "
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"signed = (boolean) { true, false }, "
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@ -699,6 +786,69 @@ gst_riff_create_audio_caps (guint16 codec_id,
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*codec_name = g_strdup ("Sony ATRAC3");
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break;
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case GST_RIFF_WAVE_FORMAT_EXTENSIBLE:{
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guint16 valid_bits_per_sample;
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guint32 channel_mask;
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guint32 subformat_guid[4];
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const guint8 *data;
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if (GST_BUFFER_SIZE (strf_data) != 22) {
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GST_WARNING ("WAVE_FORMAT_EXTENSIBLE data size is %d (expected: 22)",
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GST_BUFFER_SIZE (strf_data));
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return NULL;
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}
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data = GST_BUFFER_DATA (strf_data);
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valid_bits_per_sample = GST_READ_UINT16_LE (data);
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channel_mask = GST_READ_UINT32_LE (data + 2);
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subformat_guid[0] = GST_READ_UINT32_LE (data + 6);
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subformat_guid[1] = GST_READ_UINT32_LE (data + 10);
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subformat_guid[2] = GST_READ_UINT32_LE (data + 14);
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subformat_guid[3] = GST_READ_UINT32_LE (data + 18);
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GST_DEBUG ("valid bps = %u", valid_bits_per_sample);
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GST_DEBUG ("channel mask = 0x%08x", channel_mask);
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GST_DEBUG ("GUID = %08x-%08x-%08x-%08x", subformat_guid[0],
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subformat_guid[1], subformat_guid[2], subformat_guid[3]);
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if (subformat_guid[1] == 0x00100000 &&
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subformat_guid[2] == 0xaa000080 && subformat_guid[3] == 0x719b3800) {
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if (subformat_guid[0] == 0x00000001) {
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GST_DEBUG ("PCM");
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if (strf != NULL) {
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gint ba = strf->blockalign;
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gint ws = strf->size;
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gint depth = ws;
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if (valid_bits_per_sample != 0)
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depth = valid_bits_per_sample;
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caps = gst_caps_new_simple ("audio/x-raw-int",
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"endianness", G_TYPE_INT, G_LITTLE_ENDIAN,
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"channels", G_TYPE_INT, strf->channels,
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"width", G_TYPE_INT, (int) (ba * 8 / strf->channels),
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"depth", G_TYPE_INT, depth,
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"rate", G_TYPE_INT, strf->rate,
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"signed", G_TYPE_BOOLEAN, (depth > 8) ? TRUE : FALSE, NULL);
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if (!gst_riff_wavext_add_channel_layout (caps, channel_mask)) {
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GST_WARNING ("failed to add channel layout");
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gst_caps_unref (caps);
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caps = NULL;
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}
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rate_chan = FALSE;
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}
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} else if (subformat_guid[0] == 0x00000003) {
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GST_DEBUG ("FIXME: handle IEEE float format");
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}
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if (caps == NULL) {
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GST_WARNING ("Unknown WAVE_FORMAT_EXTENSIBLE audio format");
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return NULL;
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}
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}
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break;
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}
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default:
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GST_WARNING ("Unknown audio tag 0x%04x", codec_id);
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return NULL;
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