static GstCaps *
gst_ac3_parse_get_sink_caps (GstBaseParse * parse)
{
GstCaps *peercaps;
GstCaps *res;
peercaps = gst_pad_get_allowed_caps (GST_BASE_PARSE_SRC_PAD (parse));
if (peercaps) {
guint i, n;
/* Remove the framed and alignment field. We can convert
* between different alignments. */
peercaps = gst_caps_make_writable (peercaps);
n = gst_caps_get_size (peercaps);
for (i = 0; i < n; i++) {
GstStructure *s = gst_caps_get_structure (peercaps, i);
gst_structure_remove_field (s, "framed");
gst_structure_remove_field (s, "alignment");
}
res =
gst_caps_intersect_full (peercaps,
gst_pad_get_pad_template_caps (GST_BASE_PARSE_SINK_PAD (parse)),
GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (peercaps);
} else {
res =
gst_caps_copy (gst_pad_get_pad_template_caps (GST_BASE_PARSE_SINK_PAD
(parse)));
}
return res;
}
static GstCaps *
gst_h263_parse_get_sink_caps (GstBaseParse * parse)
{
GstCaps *peercaps;
GstCaps *res;
peercaps = gst_pad_get_allowed_caps (GST_BASE_PARSE_SRC_PAD (parse));
if (peercaps) {
guint i, n;
/* Remove parsed field */
peercaps = gst_caps_make_writable (peercaps);
n = gst_caps_get_size (peercaps);
for (i = 0; i < n; i++) {
GstStructure *s = gst_caps_get_structure (peercaps, i);
gst_structure_remove_field (s, "parsed");
}
res =
gst_caps_intersect_full (peercaps,
gst_pad_get_pad_template_caps (GST_BASE_PARSE_SINK_PAD (parse)),
GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (peercaps);
} else {
res =
gst_caps_copy (gst_pad_get_pad_template_caps (GST_BASE_PARSE_SINK_PAD
(parse)));
}
return res;
}
static void
gst_dirac_parse_init (GstDiracParse * diracparse)
{
gst_base_parse_set_min_frame_size (GST_BASE_PARSE (diracparse), 13);
gst_base_parse_set_pts_interpolation (GST_BASE_PARSE (diracparse), FALSE);
GST_PAD_SET_ACCEPT_INTERSECT (GST_BASE_PARSE_SINK_PAD (diracparse));
GST_PAD_SET_ACCEPT_TEMPLATE (GST_BASE_PARSE_SINK_PAD (diracparse));
}
/**
* gst_amr_parse_init:
* @amrparse: #GstAmrParse
* @klass: #GstAmrParseClass.
*
*/
static void
gst_amr_parse_init (GstAmrParse * amrparse)
{
/* init rest */
gst_base_parse_set_min_frame_size (GST_BASE_PARSE (amrparse), 62);
GST_DEBUG ("initialized");
GST_PAD_SET_ACCEPT_INTERSECT (GST_BASE_PARSE_SINK_PAD (amrparse));
GST_PAD_SET_ACCEPT_TEMPLATE (GST_BASE_PARSE_SINK_PAD (amrparse));
}
static void
gst_ac3_parse_init (GstAc3Parse * ac3parse)
{
gst_base_parse_set_min_frame_size (GST_BASE_PARSE (ac3parse), 8);
gst_ac3_parse_reset (ac3parse);
ac3parse->baseparse_chainfunc =
GST_BASE_PARSE_SINK_PAD (GST_BASE_PARSE (ac3parse))->chainfunc;
GST_PAD_SET_ACCEPT_INTERSECT (GST_BASE_PARSE_SINK_PAD (ac3parse));
GST_PAD_SET_ACCEPT_TEMPLATE (GST_BASE_PARSE_SINK_PAD (ac3parse));
}
static void
gst_h264_parse_init (GstH264Parse * h264parse, GstH264ParseClass * g_class)
{
h264parse->frame_out = gst_adapter_new ();
/* retrieve and intercept baseparse.
* Quite HACKish, but fairly OK since it is needed to perform avc packet
* splitting, which is the penultimate de-parsing */
h264parse->parse_chain =
GST_PAD_CHAINFUNC (GST_BASE_PARSE_SINK_PAD (h264parse));
gst_pad_set_chain_function (GST_BASE_PARSE_SINK_PAD (h264parse),
gst_h264_parse_chain);
}
static GstCaps *
gst_amr_parse_sink_getcaps (GstBaseParse * parse, GstCaps * filter)
{
GstCaps *peercaps, *templ;
GstCaps *res;
templ = gst_pad_get_pad_template_caps (GST_BASE_PARSE_SINK_PAD (parse));
peercaps = gst_pad_peer_query_caps (GST_BASE_PARSE_SRC_PAD (parse), filter);
if (peercaps) {
guint i, n;
/* Rename structure names */
peercaps = gst_caps_make_writable (peercaps);
n = gst_caps_get_size (peercaps);
for (i = 0; i < n; i++) {
GstStructure *s = gst_caps_get_structure (peercaps, i);
if (gst_structure_has_name (s, "audio/AMR"))
gst_structure_set_name (s, "audio/x-amr-nb-sh");
else
gst_structure_set_name (s, "audio/x-amr-wb-sh");
}
res = gst_caps_intersect_full (peercaps, templ, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (peercaps);
res = gst_caps_make_writable (res);
/* Append the template caps because we still want to accept
* caps without any fields in the case upstream does not
* know anything.
*/
gst_caps_append (res, templ);
} else {
res = templ;
}
if (filter) {
GstCaps *intersection;
intersection =
gst_caps_intersect_full (filter, res, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (res);
res = intersection;
}
return res;
}
static GstCaps *
gst_ac3_parse_get_sink_caps (GstBaseParse * parse, GstCaps * filter)
{
GstCaps *peercaps, *templ;
GstCaps *res;
templ = gst_pad_get_pad_template_caps (GST_BASE_PARSE_SINK_PAD (parse));
peercaps = gst_pad_peer_query_caps (GST_BASE_PARSE_SRC_PAD (parse), filter);
if (peercaps) {
guint i, n;
/* Remove the framed and alignment field. We can convert
* between different alignments. */
peercaps = gst_caps_make_writable (peercaps);
n = gst_caps_get_size (peercaps);
for (i = 0; i < n; i++) {
GstStructure *s = gst_caps_get_structure (peercaps, i);
gst_structure_remove_field (s, "framed");
gst_structure_remove_field (s, "alignment");
}
res = gst_caps_intersect_full (peercaps, templ, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (peercaps);
res = gst_caps_make_writable (res);
/* Append the template caps because we still want to accept
* caps without any fields in the case upstream does not
* know anything.
*/
gst_caps_append (res, templ);
} else {
res = templ;
}
if (filter) {
GstCaps *intersection;
intersection =
gst_caps_intersect_full (filter, res, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (res);
res = intersection;
}
return res;
}
static GstCaps *
gst_ac3_parse_get_sink_caps (GstBaseParse * parse, GstCaps * filter)
{
GstCaps *peercaps, *templ;
GstCaps *res;
templ = gst_pad_get_pad_template_caps (GST_BASE_PARSE_SINK_PAD (parse));
if (filter) {
GstCaps *fcopy = gst_caps_copy (filter);
/* Remove the fields we convert */
remove_fields (fcopy);
/* we do not ask downstream to handle x-private1-ac3 */
fcopy = extend_caps (fcopy, FALSE);
peercaps = gst_pad_peer_query_caps (GST_BASE_PARSE_SRC_PAD (parse), fcopy);
gst_caps_unref (fcopy);
} else
peercaps = gst_pad_peer_query_caps (GST_BASE_PARSE_SRC_PAD (parse), NULL);
if (peercaps) {
/* Remove the framed and alignment field. We can convert
* between different alignments. */
peercaps = gst_caps_make_writable (peercaps);
remove_fields (peercaps);
/* also allow for x-private1-ac3 input */
peercaps = extend_caps (peercaps, TRUE);
res = gst_caps_intersect_full (peercaps, templ, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (peercaps);
gst_caps_unref (templ);
} else {
res = templ;
}
if (filter) {
GstCaps *intersection;
intersection =
gst_caps_intersect_full (filter, res, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (res);
res = intersection;
}
return res;
}
static GstCaps *
gst_dirac_parse_get_sink_caps (GstBaseParse * parse, GstCaps * filter)
{
GstCaps *peercaps, *templ;
GstCaps *res;
templ = gst_pad_get_pad_template_caps (GST_BASE_PARSE_SINK_PAD (parse));
if (filter) {
GstCaps *fcopy = gst_caps_copy (filter);
/* Remove the fields we convert */
remove_fields (fcopy);
peercaps = gst_pad_peer_query_caps (GST_BASE_PARSE_SRC_PAD (parse), fcopy);
gst_caps_unref (fcopy);
} else
peercaps = gst_pad_peer_query_caps (GST_BASE_PARSE_SRC_PAD (parse), NULL);
if (peercaps) {
/* Remove the parsed field */
peercaps = gst_caps_make_writable (peercaps);
remove_fields (peercaps);
res = gst_caps_intersect_full (peercaps, templ, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (peercaps);
gst_caps_unref (templ);
} else {
res = templ;
}
if (filter) {
GstCaps *intersection;
intersection =
gst_caps_intersect_full (filter, res, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (res);
res = intersection;
}
return res;
}
static void
gst_h264_parse_update_src_caps (GstH264Parse * h264parse)
{
GstH264ParamsSPS *sps;
GstCaps *caps = NULL, *sink_caps;
gboolean modified = FALSE;
GstBuffer *buf = NULL;
if (G_UNLIKELY (!GST_PAD_CAPS (GST_BASE_PARSE_SRC_PAD (h264parse))))
modified = TRUE;
else if (G_UNLIKELY (!h264parse->update_caps))
return;
/* carry over input caps as much as possible; override with our own stuff */
sink_caps = GST_PAD_CAPS (GST_BASE_PARSE_SINK_PAD (h264parse));
if (sink_caps)
gst_caps_ref (sink_caps);
else
sink_caps = gst_caps_new_simple ("video/x-h264", NULL);
sps = h264parse->params->sps;
GST_DEBUG_OBJECT (h264parse, "sps: %p", sps);
/* only codec-data for nice-and-clean au aligned packetized avc format */
if (h264parse->format == GST_H264_PARSE_FORMAT_AVC &&
h264parse->align == GST_H264_PARSE_ALIGN_AU) {
buf = gst_h264_parse_make_codec_data (h264parse);
if (buf && h264parse->codec_data) {
if (GST_BUFFER_SIZE (buf) != GST_BUFFER_SIZE (h264parse->codec_data) ||
memcmp (GST_BUFFER_DATA (buf),
GST_BUFFER_DATA (h264parse->codec_data), GST_BUFFER_SIZE (buf)))
modified = TRUE;
} else {
if (h264parse->codec_data)
buf = gst_buffer_ref (h264parse->codec_data);
modified = TRUE;
}
}
if (G_UNLIKELY (!sps)) {
caps = gst_caps_copy (sink_caps);
} else if (G_UNLIKELY (h264parse->width != sps->width ||
h264parse->height != sps->height || h264parse->fps_num != sps->fps_num
|| h264parse->fps_den != sps->fps_den || modified)) {
caps = gst_caps_copy (sink_caps);
/* sps should give this */
gst_caps_set_simple (caps, "width", G_TYPE_INT, sps->width,
"height", G_TYPE_INT, sps->height, NULL);
h264parse->height = sps->height;
h264parse->width = sps->width;
/* but not necessarily or reliably this */
if ((!h264parse->fps_num || !h264parse->fps_den) &&
sps->fps_num > 0 && sps->fps_den > 0) {
gst_caps_set_simple (caps, "framerate",
GST_TYPE_FRACTION, sps->fps_num, sps->fps_den, NULL);
h264parse->fps_num = sps->fps_num;
h264parse->fps_den = sps->fps_den;
gst_base_parse_set_frame_props (GST_BASE_PARSE (h264parse),
h264parse->fps_num, h264parse->fps_den, 0, 0);
}
}
if (caps) {
gst_caps_set_simple (caps, "parsed", G_TYPE_BOOLEAN, TRUE,
"stream-format", G_TYPE_STRING,
gst_h264_parse_get_string (h264parse, TRUE, h264parse->format),
"alignment", G_TYPE_STRING,
gst_h264_parse_get_string (h264parse, FALSE, h264parse->align), NULL);
if (buf) {
gst_caps_set_simple (caps, "codec_data", GST_TYPE_BUFFER, buf, NULL);
gst_buffer_replace (&h264parse->codec_data, buf);
gst_buffer_unref (buf);
buf = NULL;
} else {
GstStructure *s;
/* remove any left-over codec-data hanging around */
s = gst_caps_get_structure (caps, 0);
gst_structure_remove_field (s, "codec_data");
}
gst_pad_set_caps (GST_BASE_PARSE_SRC_PAD (h264parse), caps);
gst_caps_unref (caps);
}
gst_caps_unref (sink_caps);
if (buf)
gst_buffer_unref (buf);
}
static void
gst_mpegv_parse_update_src_caps (GstMpegvParse * mpvparse)
{
GstCaps *caps = NULL;
/* only update if no src caps yet or explicitly triggered */
if (G_LIKELY (gst_pad_has_current_caps (GST_BASE_PARSE_SRC_PAD (mpvparse)) &&
!mpvparse->update_caps))
return;
/* carry over input caps as much as possible; override with our own stuff */
caps = gst_pad_get_current_caps (GST_BASE_PARSE_SINK_PAD (mpvparse));
if (caps) {
caps = gst_caps_make_writable (caps);
} else {
caps = gst_caps_new_empty_simple ("video/mpeg");
}
/* typically we don't output buffers until we have properly parsed some
* config data, so we should at least know about version.
* If not, it means it has been requested not to drop data, and
* upstream and/or app must know what they are doing ... */
gst_caps_set_simple (caps,
"mpegversion", G_TYPE_INT, (mpvparse->config_flags & FLAG_MPEG2) ? 2 : 1,
NULL);
gst_caps_set_simple (caps, "systemstream", G_TYPE_BOOLEAN, FALSE,
"parsed", G_TYPE_BOOLEAN, TRUE, NULL);
if (mpvparse->sequencehdr.width > 0 && mpvparse->sequencehdr.height > 0) {
gst_caps_set_simple (caps, "width", G_TYPE_INT, mpvparse->sequencehdr.width,
"height", G_TYPE_INT, mpvparse->sequencehdr.height, NULL);
}
/* perhaps we have a framerate */
if (mpvparse->fps_num > 0 && mpvparse->fps_den > 0) {
gint fps_num = mpvparse->fps_num;
gint fps_den = mpvparse->fps_den;
GstClockTime latency = gst_util_uint64_scale (GST_SECOND, fps_den, fps_num);
gst_caps_set_simple (caps, "framerate",
GST_TYPE_FRACTION, fps_num, fps_den, NULL);
gst_base_parse_set_frame_rate (GST_BASE_PARSE (mpvparse),
fps_num, fps_den, 0, 0);
gst_base_parse_set_latency (GST_BASE_PARSE (mpvparse), latency, latency);
}
/* or pixel-aspect-ratio */
if (mpvparse->sequencehdr.par_w && mpvparse->sequencehdr.par_h > 0) {
gst_caps_set_simple (caps, "pixel-aspect-ratio", GST_TYPE_FRACTION,
mpvparse->sequencehdr.par_w, mpvparse->sequencehdr.par_h, NULL);
}
if (mpvparse->config != NULL) {
gst_caps_set_simple (caps, "codec_data",
GST_TYPE_BUFFER, mpvparse->config, NULL);
}
if (mpvparse->config_flags & FLAG_SEQUENCE_EXT) {
const guint profile_c = mpvparse->sequenceext.profile;
const guint level_c = mpvparse->sequenceext.level;
const gchar *profile = NULL, *level = NULL;
/*
* Profile indication - 1 => High, 2 => Spatially Scalable,
* 3 => SNR Scalable, 4 => Main, 5 => Simple
* 4:2:2 and Multi-view have profile = 0, with the escape bit set to 1
*/
const gchar *const profiles[] =
{ "high", "spatial", "snr", "main", "simple" };
/*
* Level indication - 4 => High, 6 => High-1440, 8 => Main, 10 => Low,
* except in the case of profile = 0
*/
const gchar *const levels[] = { "high", "high-1440", "main", "low" };
if (profile_c > 0 && profile_c < 6)
profile = profiles[profile_c - 1];
if ((level_c > 3) && (level_c < 11) && (level_c % 2 == 0))
level = levels[(level_c >> 1) - 2];
if (profile_c == 8) {
/* Non-hierarchical profile */
switch (level_c) {
case 2:
level = levels[0];
case 5:
level = levels[2];
profile = "4:2:2";
break;
case 10:
level = levels[0];
case 11:
level = levels[1];
case 13:
level = levels[2];
case 14:
level = levels[3];
profile = "multiview";
break;
default:
break;
}
}
/* FIXME does it make sense to expose profile/level in the caps ? */
GST_DEBUG_OBJECT (mpvparse, "profile:'%s' level:'%s'", profile, level);
if (profile)
gst_caps_set_simple (caps, "profile", G_TYPE_STRING, profile, NULL);
else
GST_DEBUG_OBJECT (mpvparse, "Invalid profile - %u", profile_c);
if (level)
gst_caps_set_simple (caps, "level", G_TYPE_STRING, level, NULL);
else
GST_DEBUG_OBJECT (mpvparse, "Invalid level - %u", level_c);
gst_caps_set_simple (caps, "interlace-mode",
G_TYPE_STRING,
(mpvparse->sequenceext.progressive ? "progressive" : "mixed"), NULL);
}
gst_pad_set_caps (GST_BASE_PARSE_SRC_PAD (mpvparse), caps);
gst_caps_unref (caps);
mpvparse->update_caps = FALSE;
}
static void
gst_h263_parse_set_src_caps (GstH263Parse * h263parse,
const H263Params * params)
{
GstStructure *st;
GstCaps *caps, *sink_caps;
gint fr_num, fr_denom;
g_assert (h263parse->state == PASSTHROUGH || h263parse->state == GOT_HEADER);
caps = GST_PAD_CAPS (GST_BASE_PARSE_SINK_PAD (h263parse));
if (caps) {
caps = gst_caps_copy (caps);
} else {
caps = gst_caps_new_simple ("video/x-h263",
"variant", G_TYPE_STRING, "itu", NULL);
}
gst_caps_set_simple (caps, "parsed", G_TYPE_BOOLEAN, TRUE, NULL);
sink_caps = GST_PAD_CAPS (GST_BASE_PARSE_SINK_PAD (h263parse));
if (sink_caps && (st = gst_caps_get_structure (sink_caps, 0)) &&
gst_structure_get_fraction (st, "framerate", &fr_num, &fr_denom)) {
/* Got it in caps - nothing more to do */
GST_DEBUG_OBJECT (h263parse, "sink caps override framerate from headers");
} else {
/* Caps didn't have the framerate - get it from params */
gst_h263_parse_get_framerate (params, &fr_num, &fr_denom);
}
gst_caps_set_simple (caps, "framerate", GST_TYPE_FRACTION, fr_num, fr_denom,
NULL);
if (params->width && params->height)
gst_caps_set_simple (caps, "width", G_TYPE_INT, params->width,
"height", G_TYPE_INT, params->height, NULL);
if (h263parse->state == GOT_HEADER) {
gst_caps_set_simple (caps,
"annex-d", G_TYPE_BOOLEAN, (params->features & H263_OPTION_UMV_MODE),
"annex-e", G_TYPE_BOOLEAN, (params->features & H263_OPTION_SAC_MODE),
"annex-f", G_TYPE_BOOLEAN, (params->features & H263_OPTION_AP_MODE),
"annex-g", G_TYPE_BOOLEAN, (params->features & H263_OPTION_PB_MODE),
"annex-i", G_TYPE_BOOLEAN, (params->features & H263_OPTION_AIC_MODE),
"annex-j", G_TYPE_BOOLEAN, (params->features & H263_OPTION_DF_MODE),
"annex-k", G_TYPE_BOOLEAN, (params->features & H263_OPTION_SS_MODE),
"annex-m", G_TYPE_BOOLEAN, (params->type == PICTURE_IMPROVED_PB),
"annex-n", G_TYPE_BOOLEAN, (params->features & H263_OPTION_RPS_MODE),
"annex-q", G_TYPE_BOOLEAN, (params->features & H263_OPTION_RRU_MODE),
"annex-r", G_TYPE_BOOLEAN, (params->features & H263_OPTION_ISD_MODE),
"annex-s", G_TYPE_BOOLEAN, (params->features & H263_OPTION_AIV_MODE),
"annex-t", G_TYPE_BOOLEAN, (params->features & H263_OPTION_MQ_MODE),
"annex-u", G_TYPE_BOOLEAN, (params->features & H263_OPTION_ERPS_MODE),
"annex-v", G_TYPE_BOOLEAN, (params->features & H263_OPTION_DPS_MODE),
NULL);
h263parse->profile = gst_h263_parse_get_profile (params);
if (h263parse->profile != -1)
gst_caps_set_simple (caps, "profile", G_TYPE_UINT, h263parse->profile,
NULL);
h263parse->level = gst_h263_parse_get_level (params, h263parse->profile,
h263parse->bitrate, fr_num, fr_denom);
if (h263parse->level != -1)
gst_caps_set_simple (caps, "level", G_TYPE_UINT, h263parse->level, NULL);
}
gst_pad_set_caps (GST_BASE_PARSE_SRC_PAD (GST_BASE_PARSE (h263parse)), caps);
gst_caps_unref (caps);
}
static GstFlowReturn
gst_opus_parse_parse_frame (GstBaseParse * base, GstBaseParseFrame * frame)
{
guint64 duration;
GstOpusParse *parse;
gboolean is_idheader, is_commentheader;
GstMapInfo map;
GstAudioClippingMeta *cmeta =
gst_buffer_get_audio_clipping_meta (frame->buffer);
parse = GST_OPUS_PARSE (base);
g_assert (!cmeta || cmeta->format == GST_FORMAT_DEFAULT);
is_idheader = gst_opus_header_is_id_header (frame->buffer);
is_commentheader = gst_opus_header_is_comment_header (frame->buffer);
if (!parse->got_headers || !parse->header_sent) {
GstCaps *caps;
/* Opus streams can decode to 1 or 2 channels, so use the header
value if we have one, or 2 otherwise */
if (is_idheader) {
gst_buffer_replace (&parse->id_header, frame->buffer);
GST_DEBUG_OBJECT (parse, "Found ID header, keeping");
return GST_BASE_PARSE_FLOW_DROPPED;
} else if (is_commentheader) {
gst_buffer_replace (&parse->comment_header, frame->buffer);
GST_DEBUG_OBJECT (parse, "Found comment header, keeping");
return GST_BASE_PARSE_FLOW_DROPPED;
}
parse->got_headers = TRUE;
if (cmeta && cmeta->start) {
parse->pre_skip += cmeta->start;
gst_buffer_map (frame->buffer, &map, GST_MAP_READ);
duration = packet_duration_opus (map.data, map.size);
gst_buffer_unmap (frame->buffer, &map);
/* Queue frame for later once we know all initial padding */
if (duration == cmeta->start) {
frame->flags |= GST_BASE_PARSE_FRAME_FLAG_QUEUE;
}
}
if (!(frame->flags & GST_BASE_PARSE_FRAME_FLAG_QUEUE)) {
if (FALSE && parse->id_header && parse->comment_header) {
guint16 pre_skip;
gst_buffer_map (parse->id_header, &map, GST_MAP_READWRITE);
pre_skip = GST_READ_UINT16_LE (map.data + 10);
if (pre_skip != parse->pre_skip) {
GST_DEBUG_OBJECT (parse,
"Fixing up pre-skip %u -> %" G_GUINT64_FORMAT, pre_skip,
parse->pre_skip);
GST_WRITE_UINT16_LE (map.data + 10, parse->pre_skip);
}
gst_buffer_unmap (parse->id_header, &map);
caps =
gst_codec_utils_opus_create_caps_from_header (parse->id_header,
parse->comment_header);
} else {
GstCaps *sink_caps;
guint32 sample_rate = 48000;
guint8 n_channels, n_streams, n_stereo_streams, channel_mapping_family;
guint8 channel_mapping[256];
GstBuffer *id_header;
sink_caps = gst_pad_get_current_caps (GST_BASE_PARSE_SINK_PAD (parse));
if (!sink_caps
|| !gst_codec_utils_opus_parse_caps (sink_caps, &sample_rate,
&n_channels, &channel_mapping_family, &n_streams,
&n_stereo_streams, channel_mapping)) {
GST_INFO_OBJECT (parse,
"No headers and no caps, blindly setting up canonical stereo");
n_channels = 2;
n_streams = 1;
n_stereo_streams = 1;
channel_mapping_family = 0;
channel_mapping[0] = 0;
channel_mapping[1] = 1;
}
if (sink_caps)
gst_caps_unref (sink_caps);
id_header =
gst_codec_utils_opus_create_header (sample_rate, n_channels,
channel_mapping_family, n_streams, n_stereo_streams,
channel_mapping, parse->pre_skip, 0);
caps = gst_codec_utils_opus_create_caps_from_header (id_header, NULL);
gst_buffer_unref (id_header);
}
gst_buffer_replace (&parse->id_header, NULL);
gst_buffer_replace (&parse->comment_header, NULL);
gst_pad_set_caps (GST_BASE_PARSE_SRC_PAD (parse), caps);
gst_caps_unref (caps);
parse->header_sent = TRUE;
}
}
GST_BUFFER_TIMESTAMP (frame->buffer) = parse->next_ts;
gst_buffer_map (frame->buffer, &map, GST_MAP_READ);
duration = packet_duration_opus (map.data, map.size);
gst_buffer_unmap (frame->buffer, &map);
parse->next_ts += duration;
GST_BUFFER_DURATION (frame->buffer) = duration;
GST_BUFFER_OFFSET_END (frame->buffer) =
gst_util_uint64_scale (parse->next_ts, 48000, GST_SECOND);
GST_BUFFER_OFFSET (frame->buffer) = parse->next_ts;
return GST_FLOW_OK;
}
static GstFlowReturn
gst_png_parse_handle_frame (GstBaseParse * parse,
GstBaseParseFrame * frame, gint * skipsize)
{
GstPngParse *pngparse = GST_PNG_PARSE (parse);
GstMapInfo map;
GstByteReader reader;
GstFlowReturn ret = GST_FLOW_OK;
guint64 signature;
guint width = 0, height = 0;
gst_buffer_map (frame->buffer, &map, GST_MAP_READ);
gst_byte_reader_init (&reader, map.data, map.size);
if (!gst_byte_reader_peek_uint64_be (&reader, &signature))
goto beach;
if (signature != PNG_SIGNATURE) {
for (;;) {
guint offset;
offset = gst_byte_reader_masked_scan_uint32 (&reader, 0xffffffff,
0x89504E47, 0, gst_byte_reader_get_remaining (&reader));
if (offset == -1) {
*skipsize = gst_byte_reader_get_remaining (&reader) - 4;
goto beach;
}
gst_byte_reader_skip (&reader, offset);
if (!gst_byte_reader_peek_uint64_be (&reader, &signature))
goto beach;
if (signature == PNG_SIGNATURE) {
/* We're skipping, go out, we'll be back */
*skipsize = gst_byte_reader_get_pos (&reader);
goto beach;
}
gst_byte_reader_skip (&reader, 4);
}
}
gst_byte_reader_skip (&reader, 8);
for (;;) {
guint32 length;
guint32 code;
if (!gst_byte_reader_get_uint32_be (&reader, &length))
goto beach;
if (!gst_byte_reader_get_uint32_le (&reader, &code))
goto beach;
if (code == GST_MAKE_FOURCC ('I', 'H', 'D', 'R')) {
if (!gst_byte_reader_get_uint32_be (&reader, &width))
goto beach;
if (!gst_byte_reader_get_uint32_be (&reader, &height))
goto beach;
length -= 8;
}
if (!gst_byte_reader_skip (&reader, length + 4))
goto beach;
if (code == GST_MAKE_FOURCC ('I', 'E', 'N', 'D')) {
if (pngparse->width != width || pngparse->height != height) {
GstStructure *st = NULL;
GstCaps *caps, *sink_caps;
gint fr_num, fr_denom;
pngparse->height = height;
pngparse->width = width;
sink_caps =
gst_pad_get_current_caps (GST_BASE_PARSE_SINK_PAD (pngparse));
if (sink_caps && (st = gst_caps_get_structure (sink_caps, 0))
&& gst_structure_get_fraction (st, "framerate", &fr_num, &fr_denom)) {
/* Got it in caps - nothing more to do */
GST_DEBUG_OBJECT (pngparse,
"sink caps override framerate from headers");
} else {
GST_INFO_OBJECT (pngparse, "No framerate set");
}
caps = gst_caps_new_simple ("image/png",
"width", G_TYPE_INT, width, "height", G_TYPE_INT, height,
"framerate", GST_TYPE_FRACTION, fr_num, fr_denom, NULL);
if (!gst_pad_set_caps (GST_BASE_PARSE_SRC_PAD (parse), caps)) {
ret = GST_FLOW_NOT_NEGOTIATED;
}
gst_caps_unref (caps);
if (ret != GST_FLOW_OK)
goto beach;
}
gst_buffer_unmap (frame->buffer, &map);
return gst_base_parse_finish_frame (parse, frame,
gst_byte_reader_get_pos (&reader));
}
}
beach:
gst_buffer_unmap (frame->buffer, &map);
return ret;
}
static GstFlowReturn
gst_png_parse_handle_frame (GstBaseParse * parse,
GstBaseParseFrame * frame, gint * skipsize)
{
GstPngParse *pngparse = GST_PNG_PARSE (parse);
GstMapInfo map;
GstByteReader reader;
GstFlowReturn ret = GST_FLOW_OK;
guint64 signature;
guint width = 0, height = 0;
gst_buffer_map (frame->buffer, &map, GST_MAP_READ);
gst_byte_reader_init (&reader, map.data, map.size);
if (!gst_byte_reader_peek_uint64_be (&reader, &signature))
goto beach;
if (signature != PNG_SIGNATURE) {
for (;;) {
guint offset;
offset = gst_byte_reader_masked_scan_uint32 (&reader, 0xffffffff,
0x89504E47, 0, gst_byte_reader_get_remaining (&reader));
if (offset == -1) {
*skipsize = gst_byte_reader_get_remaining (&reader) - 4;
goto beach;
}
gst_byte_reader_skip (&reader, offset);
if (!gst_byte_reader_peek_uint64_be (&reader, &signature))
goto beach;
if (signature == PNG_SIGNATURE) {
/* We're skipping, go out, we'll be back */
*skipsize = gst_byte_reader_get_pos (&reader);
goto beach;
}
gst_byte_reader_skip (&reader, 4);
}
}
gst_byte_reader_skip (&reader, 8);
for (;;) {
guint32 length;
guint32 code;
if (!gst_byte_reader_get_uint32_be (&reader, &length))
goto beach;
if (!gst_byte_reader_get_uint32_le (&reader, &code))
goto beach;
GST_TRACE_OBJECT (parse, "%" GST_FOURCC_FORMAT " chunk, %u bytes",
GST_FOURCC_ARGS (code), length);
if (code == GST_MAKE_FOURCC ('I', 'H', 'D', 'R')) {
if (!gst_byte_reader_get_uint32_be (&reader, &width))
goto beach;
if (!gst_byte_reader_get_uint32_be (&reader, &height))
goto beach;
length -= 8;
} else if (code == GST_MAKE_FOURCC ('I', 'D', 'A', 'T')) {
gst_base_parse_set_min_frame_size (parse,
gst_byte_reader_get_pos (&reader) + 4 + length + 12);
}
if (!gst_byte_reader_skip (&reader, length + 4))
goto beach;
if (code == GST_MAKE_FOURCC ('I', 'E', 'N', 'D')) {
/* the start code and at least 2 empty frames (IHDR and IEND) */
gst_base_parse_set_min_frame_size (parse, 8 + 12 + 12);
if (pngparse->width != width || pngparse->height != height) {
GstCaps *caps, *sink_caps;
pngparse->height = height;
pngparse->width = width;
caps = gst_caps_new_simple ("image/png",
"width", G_TYPE_INT, width, "height", G_TYPE_INT, height, NULL);
sink_caps =
gst_pad_get_current_caps (GST_BASE_PARSE_SINK_PAD (pngparse));
if (sink_caps) {
GstStructure *st;
gint fr_num, fr_denom;
st = gst_caps_get_structure (sink_caps, 0);
if (st
&& gst_structure_get_fraction (st, "framerate", &fr_num,
&fr_denom)) {
gst_caps_set_simple (caps,
"framerate", GST_TYPE_FRACTION, fr_num, fr_denom, NULL);
} else {
GST_WARNING_OBJECT (pngparse, "No framerate set");
}
gst_caps_unref (sink_caps);
}
if (!gst_pad_set_caps (GST_BASE_PARSE_SRC_PAD (parse), caps))
ret = GST_FLOW_NOT_NEGOTIATED;
gst_caps_unref (caps);
if (ret != GST_FLOW_OK)
goto beach;
}
gst_buffer_unmap (frame->buffer, &map);
return gst_base_parse_finish_frame (parse, frame,
gst_byte_reader_get_pos (&reader));
}
}
beach:
gst_buffer_unmap (frame->buffer, &map);
return ret;
}
static void
gst_png_parse_init (GstPngParse * pngparse)
{
GST_PAD_SET_ACCEPT_INTERSECT (GST_BASE_PARSE_SINK_PAD (pngparse));
GST_PAD_SET_ACCEPT_TEMPLATE (GST_BASE_PARSE_SINK_PAD (pngparse));
}
static void
gst_h263_parse_init (GstH263Parse * h263parse)
{
GST_PAD_SET_ACCEPT_INTERSECT (GST_BASE_PARSE_SINK_PAD (h263parse));
}