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mpeg4videoparse: port to 0.11

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This commit is contained in:
Wim Taymans 2011-10-06 14:03:29 +02:00
parent 67dac04012
commit e82262969c
2 changed files with 73 additions and 50 deletions
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2
configure.ac
View file

@ -299,7 +299,7 @@ GST_PLUGINS_NONPORTED=" adpcmdec adpcmenc aiff asfmux \
fieldanalysis freeze frei0r gaudieffects geometrictransform h264parse \
hdvparse hls id3tag inter interlace ivfparse jpegformat jp2kdecimator \
liveadder legacyresample librfb mpegdemux mpegtsdemux mpegtsmux \
mpegpsmux mpeg4videoparse mpegvideoparse mve mxf nsf nuvdemux \
mpegpsmux mpegvideoparse mve mxf nsf nuvdemux \
patchdetect pcapparse pnm rawparse real removesilence rtpmux rtpvp8 scaletempo \
sdi segmentclip siren speed subenc stereo tta videofilters \
videomaxrate videomeasure videoparsers videosignal vmnc y4m \

121
gst/mpeg4videoparse/mpeg4videoparse.c
View file

@ -61,8 +61,8 @@ enum
PROP_LAST
};
GST_BOILERPLATE (GstMpeg4VParse, gst_mpeg4vparse, GstBaseParse,
GST_TYPE_BASE_PARSE);
#define gst_mpeg4vparse_parent_class parent_class
G_DEFINE_TYPE (GstMpeg4VParse, gst_mpeg4vparse, GST_TYPE_BASE_PARSE);
static gboolean gst_mpeg4vparse_start (GstBaseParse * parse);
static gboolean gst_mpeg4vparse_stop (GstBaseParse * parse);
@ -79,22 +79,6 @@ static void gst_mpeg4vparse_set_property (GObject * object, guint prop_id,
static void gst_mpeg4vparse_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void
gst_mpeg4vparse_base_init (gpointer klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&src_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&sink_template));
gst_element_class_set_details_simple (element_class,
"MPEG 4 video elementary stream parser", "Codec/Parser/Video",
"Parses MPEG-4 Part 2 elementary video streams",
"Julien Moutte <julien@fluendo.com>");
}
static void
gst_mpeg4vparse_set_property (GObject * object, guint property_id,
const GValue * value, GParamSpec * pspec)
@ -135,6 +119,7 @@ static void
gst_mpeg4vparse_class_init (GstMpeg4VParseClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
GstBaseParseClass *parse_class = GST_BASE_PARSE_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
@ -156,6 +141,16 @@ gst_mpeg4vparse_class_init (GstMpeg4VParseClass * klass)
0, 3600, DEFAULT_CONFIG_INTERVAL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&src_template));
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&sink_template));
gst_element_class_set_details_simple (gstelement_class,
"MPEG 4 video elementary stream parser", "Codec/Parser/Video",
"Parses MPEG-4 Part 2 elementary video streams",
"Julien Moutte <julien@fluendo.com>");
/* Override BaseParse vfuncs */
parse_class->start = GST_DEBUG_FUNCPTR (gst_mpeg4vparse_start);
parse_class->stop = GST_DEBUG_FUNCPTR (gst_mpeg4vparse_stop);
@ -168,7 +163,7 @@ gst_mpeg4vparse_class_init (GstMpeg4VParseClass * klass)
}
static void
gst_mpeg4vparse_init (GstMpeg4VParse * parse, GstMpeg4VParseClass * g_class)
gst_mpeg4vparse_init (GstMpeg4VParse * parse)
{
parse->interval = DEFAULT_CONFIG_INTERVAL;
parse->last_report = GST_CLOCK_TIME_NONE;
@ -226,8 +221,8 @@ gst_mpeg4vparse_process_config (GstMpeg4VParse * mp4vparse, const guint8 * data,
gsize size)
{
/* only do stuff if something new */
if (mp4vparse->config && size == GST_BUFFER_SIZE (mp4vparse->config) &&
memcmp (GST_BUFFER_DATA (mp4vparse->config), data, size) == 0)
if (mp4vparse->config && size == gst_buffer_get_size (mp4vparse->config) &&
gst_buffer_memcmp (mp4vparse->config, 0, data, size) == 0)
return TRUE;
if (!gst_mpeg4_params_parse_config (&mp4vparse->params, data, size)) {
@ -244,7 +239,7 @@ gst_mpeg4vparse_process_config (GstMpeg4VParse * mp4vparse, const guint8 * data,
gst_buffer_unref (mp4vparse->config);
mp4vparse->config = gst_buffer_new_and_alloc (size);
memcpy (GST_BUFFER_DATA (mp4vparse->config), data, size);
gst_buffer_fill (mp4vparse->config, 0, data, size);
/* trigger src caps update */
mp4vparse->update_caps = TRUE;
@ -258,11 +253,12 @@ gst_mpeg4vparse_process_sc (GstMpeg4VParse * mp4vparse, GstBuffer * buf,
gint off)
{
guint8 *data;
gsize size;
guint code;
g_return_val_if_fail (buf && GST_BUFFER_SIZE (buf) >= off + 4, FALSE);
g_return_val_if_fail (buf && gst_buffer_get_size (buf) >= off + 4, FALSE);
data = GST_BUFFER_DATA (buf);
data = gst_buffer_map (buf, &size, NULL, GST_MAP_READ);
code = data[off + 3];
GST_LOG_OBJECT (mp4vparse, "process startcode %x", code);
@ -270,7 +266,7 @@ gst_mpeg4vparse_process_sc (GstMpeg4VParse * mp4vparse, GstBuffer * buf,
/* if we found a VOP, next start code ends it,
* except for final VOS end sequence code included in last VOP-frame */
if (mp4vparse->vop_offset >= 0 && code != MPEG4_VOS_ENDCODE) {
if (G_LIKELY (GST_BUFFER_SIZE (buf) > mp4vparse->vop_offset + 4)) {
if (G_LIKELY (size > mp4vparse->vop_offset + 4)) {
mp4vparse->intra_frame =
((data[mp4vparse->vop_offset + 4] >> 6 & 0x3) == 0);
} else {
@ -279,6 +275,7 @@ gst_mpeg4vparse_process_sc (GstMpeg4VParse * mp4vparse, GstBuffer * buf,
}
GST_LOG_OBJECT (mp4vparse, "ending frame of size %d, is intra %d", off,
mp4vparse->intra_frame);
gst_buffer_unmap (buf, data, size);
return TRUE;
}
@ -300,7 +297,7 @@ gst_mpeg4vparse_process_sc (GstMpeg4VParse * mp4vparse, GstBuffer * buf,
offset = mp4vparse->vos_offset >= 0 ?
mp4vparse->vos_offset : mp4vparse->vo_offset;
if (offset >= 0) {
gst_mpeg4vparse_process_config (mp4vparse, GST_BUFFER_DATA (buf), off);
gst_mpeg4vparse_process_config (mp4vparse, data, off);
/* avoid accepting again for a VOP sc following a GOP sc */
mp4vparse->vos_offset = -1;
mp4vparse->vo_offset = -1;
@ -319,6 +316,7 @@ gst_mpeg4vparse_process_sc (GstMpeg4VParse * mp4vparse, GstBuffer * buf,
}
break;
}
gst_buffer_unmap (buf, data, size);
/* at least need to have a VOP in a frame */
return FALSE;
@ -334,15 +332,20 @@ gst_mpeg4vparse_check_valid_frame (GstBaseParse * parse,
{
GstMpeg4VParse *mp4vparse = GST_MPEG4VIDEOPARSE (parse);
GstBuffer *buf = frame->buffer;
GstByteReader reader = GST_BYTE_READER_INIT_FROM_BUFFER (buf);
GstByteReader reader;
gint off = 0;
gboolean ret;
gboolean ret = FALSE;
guint code;
guint8 *data;
gsize size;
data = gst_buffer_map (buf, &size, NULL, GST_MAP_READ);
gst_byte_reader_init (&reader, data, size);
retry:
/* at least start code and subsequent byte */
if (G_UNLIKELY (GST_BUFFER_SIZE (buf) - off < 5))
return FALSE;
if (G_UNLIKELY (size - off < 5))
goto done;
/* avoid stale cached parsing state */
if (!(frame->flags & GST_BASE_PARSE_FRAME_FLAG_PARSING)) {
@ -360,24 +363,24 @@ retry:
}
off = gst_byte_reader_masked_scan_uint32 (&reader, 0xffffff00, 0x00000100,
off, GST_BUFFER_SIZE (buf) - off);
off, size - off);
GST_LOG_OBJECT (mp4vparse, "possible sync at buffer offset %d", off);
/* didn't find anything that looks like a sync word, skip */
if (G_UNLIKELY (off < 0)) {
*skipsize = GST_BUFFER_SIZE (buf) - 3;
return FALSE;
*skipsize = size - 3;
goto done;
}
/* possible frame header, but not at offset 0? skip bytes before sync */
if (G_UNLIKELY (off > 0)) {
*skipsize = off;
return FALSE;
goto done;
}
/* ensure start code looks like a real starting start code */
code = GST_BUFFER_DATA (buf)[3];
code = data[3];
switch (code) {
case MPEG4_VOP_STARTCODE:
case MPEG4_VOS_STARTCODE:
@ -405,20 +408,20 @@ next:
off++;
/* so now we have start code at start of data; locate next start code */
off = gst_byte_reader_masked_scan_uint32 (&reader, 0xffffff00, 0x00000100,
off, GST_BUFFER_SIZE (buf) - off);
off, size - off);
GST_LOG_OBJECT (mp4vparse, "next start code at %d", off);
if (off < 0) {
/* if draining, take all */
if (GST_BASE_PARSE_DRAINING (parse)) {
off = GST_BUFFER_SIZE (buf);
off = size;
ret = TRUE;
} else {
/* resume scan where we left it */
mp4vparse->last_sc = GST_BUFFER_SIZE (buf) - 4;
mp4vparse->last_sc = size - 4;
/* request best next available */
*framesize = G_MAXUINT;
return FALSE;
goto done;
}
} else {
/* decide whether this startcode ends a frame */
@ -431,6 +434,9 @@ next:
goto next;
}
done:
gst_buffer_unmap (buf, data, size);
return ret;
}
@ -440,14 +446,14 @@ gst_mpeg4vparse_update_src_caps (GstMpeg4VParse * mp4vparse)
GstCaps *caps = NULL;
/* only update if no src caps yet or explicitly triggered */
if (G_LIKELY (GST_PAD_CAPS (GST_BASE_PARSE_SRC_PAD (mp4vparse)) &&
if (G_LIKELY (gst_pad_has_current_caps (GST_BASE_PARSE_SRC_PAD (mp4vparse)) &&
!mp4vparse->update_caps))
return;
/* carry over input caps as much as possible; override with our own stuff */
caps = GST_PAD_CAPS (GST_BASE_PARSE_SINK_PAD (mp4vparse));
caps = gst_pad_get_current_caps (GST_BASE_PARSE_SINK_PAD (mp4vparse));
if (caps) {
caps = gst_caps_copy (caps);
caps = gst_caps_make_writable (caps);
} else {
caps = gst_caps_new_simple ("video/mpeg",
"mpegversion", G_TYPE_INT, 4, NULL);
@ -521,6 +527,20 @@ gst_mpeg4vparse_parse_frame (GstBaseParse * parse, GstBaseParseFrame * frame)
return GST_FLOW_OK;
}
static gint
compare_buffers (GstBuffer * buf1, GstBuffer * buf2)
{
gpointer data;
gsize size;
gint ret;
data = gst_buffer_map (buf2, &size, NULL, GST_MAP_READ);
ret = gst_buffer_memcmp (buf1, 0, data, size);
gst_buffer_unmap (buf2, data, size);
return ret;
}
static GstFlowReturn
gst_mpeg4vparse_pre_push_frame (GstBaseParse * parse, GstBaseParseFrame * frame)
{
@ -555,15 +575,14 @@ gst_mpeg4vparse_pre_push_frame (GstBaseParse * parse, GstBaseParseFrame * frame)
GST_LOG_OBJECT (parse, "inserting config in stream");
/* avoid inserting duplicate config */
if ((GST_BUFFER_SIZE (buffer) < GST_BUFFER_SIZE (mp4vparse->config)) ||
memcmp (GST_BUFFER_DATA (buffer),
GST_BUFFER_DATA (mp4vparse->config),
GST_BUFFER_SIZE (mp4vparse->config))) {
if ((gst_buffer_get_size (buffer) <
gst_buffer_get_size (mp4vparse->config))
|| compare_buffers (buffer, mp4vparse->config)) {
GstBuffer *superbuf;
/* insert header */
superbuf = gst_buffer_merge (mp4vparse->config, buffer);
gst_buffer_copy_metadata (superbuf, buffer, GST_BUFFER_COPY_ALL);
gst_buffer_copy_into (superbuf, buffer, GST_BUFFER_COPY_ALL, 0, -1);
gst_buffer_replace (&frame->buffer, superbuf);
gst_buffer_unref (superbuf);
} else {
@ -594,11 +613,15 @@ gst_mpeg4vparse_set_caps (GstBaseParse * parse, GstCaps * caps)
if ((value = gst_structure_get_value (s, "codec_data")) != NULL
&& (buf = gst_value_get_buffer (value))) {
guint8 *data;
gsize size;
data = gst_buffer_map (buf, &size, NULL, GST_MAP_READ);
/* best possible parse attempt,
* src caps are based on sink caps so it will end up in there
* whether sucessful or not */
gst_mpeg4vparse_process_config (mp4vparse, GST_BUFFER_DATA (buf),
GST_BUFFER_SIZE (buf));
gst_mpeg4vparse_process_config (mp4vparse, data, size);
gst_buffer_unmap (buf, data, size);
}
/* let's not interfere and accept regardless of config parsing success */