gstreamer/ext/schroedinger/gstschroparse.c

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/* Schrodinger
* Copyright (C) 2006 David Schleef <ds@schleef.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <gst/base/gstadapter.h>
#include <gst/video/video.h>
#include <gst/video/gstbasevideoparse.h>
#include <string.h>
#include <schroedinger/schro.h>
#include <math.h>
#include <schroedinger/schroparse.h>
GST_DEBUG_CATEGORY_EXTERN (schro_debug);
#define GST_CAT_DEFAULT schro_debug
#define GST_TYPE_SCHRO_PARSE \
(gst_schro_parse_get_type())
#define GST_SCHRO_PARSE(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SCHRO_PARSE,GstSchroParse))
#define GST_SCHRO_PARSE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_SCHRO_PARSE,GstSchroParseClass))
#define GST_IS_SCHRO_PARSE(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_SCHRO_PARSE))
#define GST_IS_SCHRO_PARSE_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_SCHRO_PARSE))
typedef struct _GstSchroParse GstSchroParse;
typedef struct _GstSchroParseClass GstSchroParseClass;
typedef enum
{
GST_SCHRO_PARSE_OUTPUT_OGG,
GST_SCHRO_PARSE_OUTPUT_QUICKTIME,
GST_SCHRO_PARSE_OUTPUT_AVI,
GST_SCHRO_PARSE_OUTPUT_MPEG_TS,
GST_SCHRO_PARSE_OUTPUT_MP4
} GstSchroParseOutputType;
struct _GstSchroParse
{
GstBaseVideoParse base_video_parse;
GstPad *sinkpad, *srcpad;
GstSchroParseOutputType output_format;
GstBuffer *seq_header_buffer;
/* state */
gboolean have_picture;
int buf_picture_number;
int seq_hdr_picture_number;
int picture_number;
guint64 last_granulepos;
int bytes_per_picture;
};
struct _GstSchroParseClass
{
GstBaseVideoParseClass base_video_parse_class;
};
GType gst_schro_parse_get_type (void);
/* GstSchroParse signals and args */
enum
{
LAST_SIGNAL
};
enum
{
ARG_0
};
static void gst_schro_parse_finalize (GObject * object);
static gboolean gst_schro_parse_start (GstBaseVideoParse * base_video_parse);
static gboolean gst_schro_parse_stop (GstBaseVideoParse * base_video_parse);
static gboolean gst_schro_parse_reset (GstBaseVideoParse * base_video_parse);
static int gst_schro_parse_scan_for_sync (GstAdapter * adapter,
gboolean at_eos, int offset, int n);
static gboolean gst_schro_parse_parse_data (GstBaseVideoParse *
base_video_parse, gboolean at_eos);
static gboolean gst_schro_parse_shape_output (GstBaseVideoParse *
base_video_parse, GstVideoFrame * frame);
static GstCaps *gst_schro_parse_get_caps (GstBaseVideoParse * base_video_parse);
static GstStaticPadTemplate gst_schro_parse_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-dirac")
);
static GstStaticPadTemplate gst_schro_parse_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS
("video/x-dirac;video/x-qt-part;video/x-avi-part;video/x-mp4-part")
);
GST_BOILERPLATE (GstSchroParse, gst_schro_parse, GstBaseVideoParse,
GST_TYPE_BASE_VIDEO_PARSE);
static void
gst_schro_parse_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_schro_parse_src_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_schro_parse_sink_template));
gst_element_class_set_details_simple (element_class, "Dirac Parser",
"Codec/Parser/Video",
"Parse Dirac streams", "David Schleef <ds@schleef.org>");
}
static void
gst_schro_parse_class_init (GstSchroParseClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *element_class;
GstBaseVideoParseClass *base_video_parse_class;
gobject_class = G_OBJECT_CLASS (klass);
element_class = GST_ELEMENT_CLASS (klass);
base_video_parse_class = GST_BASE_VIDEO_PARSE_CLASS (klass);
gobject_class->finalize = gst_schro_parse_finalize;
base_video_parse_class->start = GST_DEBUG_FUNCPTR (gst_schro_parse_start);
base_video_parse_class->stop = GST_DEBUG_FUNCPTR (gst_schro_parse_stop);
base_video_parse_class->reset = GST_DEBUG_FUNCPTR (gst_schro_parse_reset);
base_video_parse_class->parse_data =
GST_DEBUG_FUNCPTR (gst_schro_parse_parse_data);
base_video_parse_class->shape_output =
GST_DEBUG_FUNCPTR (gst_schro_parse_shape_output);
base_video_parse_class->scan_for_sync =
GST_DEBUG_FUNCPTR (gst_schro_parse_scan_for_sync);
base_video_parse_class->get_caps =
GST_DEBUG_FUNCPTR (gst_schro_parse_get_caps);
}
static void
gst_schro_parse_init (GstSchroParse * schro_parse, GstSchroParseClass * klass)
{
GstBaseVideoParse *base_video_parse = GST_BASE_VIDEO_PARSE (schro_parse);
GST_DEBUG ("gst_schro_parse_init");
schro_parse->output_format = GST_SCHRO_PARSE_OUTPUT_OGG;
base_video_parse->reorder_depth = 2;
}
static gboolean
gst_schro_parse_reset (GstBaseVideoParse * base_video_parse)
{
GstSchroParse *schro_parse;
schro_parse = GST_SCHRO_PARSE (base_video_parse);
GST_DEBUG ("reset");
return TRUE;
}
static void
gst_schro_parse_finalize (GObject * object)
{
GstSchroParse *schro_parse;
g_return_if_fail (GST_IS_SCHRO_PARSE (object));
schro_parse = GST_SCHRO_PARSE (object);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static gboolean
gst_schro_parse_start (GstBaseVideoParse * base_video_parse)
{
GstSchroParse *schro_parse = GST_SCHRO_PARSE (base_video_parse);
GstCaps *caps;
GstStructure *structure;
GST_DEBUG ("start");
caps =
gst_pad_get_allowed_caps (GST_BASE_VIDEO_CODEC_SRC_PAD
(base_video_parse));
if (gst_caps_is_empty (caps)) {
gst_caps_unref (caps);
return FALSE;
}
structure = gst_caps_get_structure (caps, 0);
if (gst_structure_has_name (structure, "video/x-dirac")) {
schro_parse->output_format = GST_SCHRO_PARSE_OUTPUT_OGG;
} else if (gst_structure_has_name (structure, "video/x-qt-part")) {
schro_parse->output_format = GST_SCHRO_PARSE_OUTPUT_QUICKTIME;
} else if (gst_structure_has_name (structure, "video/x-avi-part")) {
schro_parse->output_format = GST_SCHRO_PARSE_OUTPUT_AVI;
} else if (gst_structure_has_name (structure, "video/x-mpegts-part")) {
schro_parse->output_format = GST_SCHRO_PARSE_OUTPUT_MPEG_TS;
} else if (gst_structure_has_name (structure, "video/x-mp4-part")) {
schro_parse->output_format = GST_SCHRO_PARSE_OUTPUT_MP4;
} else {
return FALSE;
}
gst_caps_unref (caps);
return TRUE;
}
static gboolean
gst_schro_parse_stop (GstBaseVideoParse * base_video_parse)
{
return TRUE;
}
static void
parse_sequence_header (GstSchroParse * schro_parse, guint8 * data, int size)
{
SchroVideoFormat video_format;
int ret;
GstVideoState *state;
GST_DEBUG ("parse_sequence_header size=%d", size);
state = gst_base_video_parse_get_state (GST_BASE_VIDEO_PARSE (schro_parse));
schro_parse->seq_header_buffer = gst_buffer_new_and_alloc (size);
memcpy (GST_BUFFER_DATA (schro_parse->seq_header_buffer), data, size);
ret = schro_parse_decode_sequence_header (data + 13, size - 13,
&video_format);
if (ret) {
state->fps_n = video_format.frame_rate_numerator;
state->fps_d = video_format.frame_rate_denominator;
GST_DEBUG ("Frame rate is %d/%d", state->fps_n, state->fps_d);
state->width = video_format.width;
state->height = video_format.height;
GST_DEBUG ("Frame dimensions are %d x %d\n", state->width, state->height);
state->clean_width = video_format.clean_width;
state->clean_height = video_format.clean_height;
state->clean_offset_left = video_format.left_offset;
state->clean_offset_top = video_format.top_offset;
state->par_n = video_format.aspect_ratio_numerator;
state->par_d = video_format.aspect_ratio_denominator;
GST_DEBUG ("Pixel aspect ratio is %d/%d", state->par_n, state->par_d);
gst_base_video_parse_set_state (GST_BASE_VIDEO_PARSE (schro_parse), state);
} else {
GST_WARNING ("Failed to get frame rate from sequence header");
}
}
static int
gst_schro_parse_scan_for_sync (GstAdapter * adapter, gboolean at_eos,
int offset, int n)
{
int n_available = gst_adapter_available (adapter) - offset;
if (n_available < 4) {
if (at_eos) {
return n_available;
} else {
return 0;
}
}
n_available -= 3;
return gst_adapter_masked_scan_uint32 (adapter, 0xffffffff, 0x42424344,
offset, MIN (n, n_available - 3));
}
static GstFlowReturn
gst_schro_parse_parse_data (GstBaseVideoParse * base_video_parse,
gboolean at_eos)
{
GstSchroParse *schro_parse;
unsigned char header[SCHRO_PARSE_HEADER_SIZE];
int next;
int prev;
int parse_code;
GST_DEBUG ("parse_data");
schro_parse = GST_SCHRO_PARSE (base_video_parse);
if (gst_adapter_available (base_video_parse->input_adapter) <
SCHRO_PARSE_HEADER_SIZE) {
return GST_BASE_VIDEO_PARSE_FLOW_NEED_DATA;
}
GST_DEBUG ("available %d",
gst_adapter_available (base_video_parse->input_adapter));
gst_adapter_copy (base_video_parse->input_adapter, header, 0,
SCHRO_PARSE_HEADER_SIZE);
parse_code = header[4];
next = GST_READ_UINT32_BE (header + 5);
prev = GST_READ_UINT32_BE (header + 9);
GST_DEBUG ("%08x %02x %08x %08x",
GST_READ_UINT32_BE (header), parse_code, next, prev);
if (memcmp (header, "BBCD", 4) != 0 ||
(next & 0xf0000000) || (prev & 0xf0000000)) {
gst_base_video_parse_lost_sync (base_video_parse);
return GST_BASE_VIDEO_PARSE_FLOW_NEED_DATA;
}
if (SCHRO_PARSE_CODE_IS_END_OF_SEQUENCE (parse_code)) {
GstVideoFrame *frame;
if (next != 0 && next != SCHRO_PARSE_HEADER_SIZE) {
GST_WARNING ("next is not 0 or 13 in EOS packet (%d)", next);
}
gst_base_video_parse_add_to_frame (base_video_parse,
SCHRO_PARSE_HEADER_SIZE);
frame = gst_base_video_parse_get_frame (base_video_parse);
frame->is_eos = TRUE;
SCHRO_DEBUG ("eos");
return gst_base_video_parse_finish_frame (base_video_parse);
}
if (gst_adapter_available (base_video_parse->input_adapter) < next) {
return GST_BASE_VIDEO_PARSE_FLOW_NEED_DATA;
}
if (SCHRO_PARSE_CODE_IS_SEQ_HEADER (parse_code)) {
guint8 *data;
data = g_malloc (next);
gst_adapter_copy (base_video_parse->input_adapter, data, 0, next);
parse_sequence_header (schro_parse, data, next);
base_video_parse->current_frame->is_sync_point = TRUE;
g_free (data);
}
if (schro_parse->seq_header_buffer == NULL) {
gst_adapter_flush (base_video_parse->input_adapter, next);
return GST_FLOW_OK;
}
if (SCHRO_PARSE_CODE_IS_PICTURE (parse_code)) {
GstVideoFrame *frame;
guint8 tmp[4];
frame = gst_base_video_parse_get_frame (base_video_parse);
#if 0
if (GST_CLOCK_TIME_IS_VALID (GST_BUFFER_TIMESTAMP (buf))) {
frame->presentation_timestamp = GST_BUFFER_TIMESTAMP (buf);
}
#endif
gst_adapter_copy (base_video_parse->input_adapter, tmp,
SCHRO_PARSE_HEADER_SIZE, 4);
frame->presentation_frame_number = GST_READ_UINT32_BE (tmp);
gst_base_video_parse_add_to_frame (base_video_parse, next);
return gst_base_video_parse_finish_frame (base_video_parse);
} else {
gst_base_video_parse_add_to_frame (base_video_parse, next);
}
return GST_FLOW_OK;
}
static GstFlowReturn
gst_schro_parse_shape_output_ogg (GstBaseVideoParse * base_video_parse,
GstVideoFrame * frame)
{
GstSchroParse *schro_parse;
int dpn;
int delay;
int dist;
int pt;
int dt;
guint64 granulepos_hi;
guint64 granulepos_low;
GstBuffer *buf = frame->src_buffer;
schro_parse = GST_SCHRO_PARSE (base_video_parse);
dpn = frame->decode_frame_number;
pt = frame->presentation_frame_number * 2;
dt = frame->decode_frame_number * 2;
delay = pt - dt;
dist = frame->distance_from_sync;
GST_DEBUG ("sys %d dpn %d pt %d dt %d delay %d dist %d",
(int) frame->system_frame_number,
(int) frame->decode_frame_number, pt, dt, delay, dist);
granulepos_hi = (((guint64) pt - delay) << 9) | ((dist >> 8));
granulepos_low = (delay << 9) | (dist & 0xff);
GST_DEBUG ("granulepos %" G_GINT64_FORMAT ":%" G_GINT64_FORMAT, granulepos_hi,
granulepos_low);
if (frame->is_eos) {
GST_BUFFER_OFFSET_END (buf) = schro_parse->last_granulepos;
} else {
schro_parse->last_granulepos = (granulepos_hi << 22) | (granulepos_low);
GST_BUFFER_OFFSET_END (buf) = schro_parse->last_granulepos;
}
return gst_base_video_parse_push (base_video_parse, buf);
}
static GstFlowReturn
gst_schro_parse_shape_output_quicktime (GstBaseVideoParse * base_video_parse,
GstVideoFrame * frame)
{
GstBuffer *buf = frame->src_buffer;
const GstVideoState *state;
state = gst_base_video_parse_get_state (base_video_parse);
GST_BUFFER_OFFSET_END (buf) = gst_video_state_get_timestamp (state,
2010-05-14 08:21:08 +00:00
&base_video_parse->segment, frame->system_frame_number);
if (frame->is_sync_point &&
frame->presentation_frame_number == frame->system_frame_number) {
GST_BUFFER_FLAG_UNSET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
GST_DEBUG ("sync point");
} else {
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
}
return gst_base_video_parse_push (base_video_parse, buf);
}
static GstFlowReturn
gst_schro_parse_shape_output_mpeg_ts (GstBaseVideoParse * base_video_parse,
GstVideoFrame * frame)
{
GstBuffer *buf = frame->src_buffer;
const GstVideoState *state;
state = gst_base_video_parse_get_state (base_video_parse);
return gst_base_video_parse_push (base_video_parse, buf);
}
static GstFlowReturn
gst_schro_parse_shape_output (GstBaseVideoParse * base_video_parse,
GstVideoFrame * frame)
{
GstSchroParse *schro_parse;
schro_parse = GST_SCHRO_PARSE (base_video_parse);
switch (schro_parse->output_format) {
case GST_SCHRO_PARSE_OUTPUT_OGG:
return gst_schro_parse_shape_output_ogg (base_video_parse, frame);
case GST_SCHRO_PARSE_OUTPUT_QUICKTIME:
return gst_schro_parse_shape_output_quicktime (base_video_parse, frame);
case GST_SCHRO_PARSE_OUTPUT_MPEG_TS:
return gst_schro_parse_shape_output_mpeg_ts (base_video_parse, frame);
default:
break;
}
return GST_FLOW_ERROR;
}
static GstCaps *
gst_schro_parse_get_caps (GstBaseVideoParse * base_video_parse)
{
GstCaps *caps;
GstVideoState *state;
GstSchroParse *schro_parse;
schro_parse = GST_SCHRO_PARSE (base_video_parse);
state = gst_base_video_parse_get_state (base_video_parse);
if (schro_parse->output_format == GST_SCHRO_PARSE_OUTPUT_OGG) {
caps = gst_caps_new_simple ("video/x-dirac",
"width", G_TYPE_INT, state->width,
"height", G_TYPE_INT, state->height,
"framerate", GST_TYPE_FRACTION, state->fps_n,
state->fps_d,
"pixel-aspect-ratio", GST_TYPE_FRACTION, state->par_n,
state->par_d, NULL);
GST_BUFFER_FLAG_SET (schro_parse->seq_header_buffer,
GST_BUFFER_FLAG_IN_CAPS);
{
GValue array = { 0 };
GValue value = { 0 };
GstBuffer *buf;
int size;
g_value_init (&array, GST_TYPE_ARRAY);
g_value_init (&value, GST_TYPE_BUFFER);
size = GST_BUFFER_SIZE (schro_parse->seq_header_buffer);
buf = gst_buffer_new_and_alloc (size + SCHRO_PARSE_HEADER_SIZE);
memcpy (GST_BUFFER_DATA (buf),
GST_BUFFER_DATA (schro_parse->seq_header_buffer), size);
GST_WRITE_UINT32_BE (GST_BUFFER_DATA (buf) + size + 0, 0x42424344);
GST_WRITE_UINT8 (GST_BUFFER_DATA (buf) + size + 4,
SCHRO_PARSE_CODE_END_OF_SEQUENCE);
GST_WRITE_UINT32_BE (GST_BUFFER_DATA (buf) + size + 5, 0);
GST_WRITE_UINT32_BE (GST_BUFFER_DATA (buf) + size + 9, size);
gst_value_set_buffer (&value, buf);
gst_buffer_unref (buf);
gst_value_array_append_value (&array, &value);
gst_structure_set_value (gst_caps_get_structure (caps, 0),
"streamheader", &array);
g_value_unset (&value);
g_value_unset (&array);
}
} else if (schro_parse->output_format == GST_SCHRO_PARSE_OUTPUT_QUICKTIME) {
caps = gst_caps_new_simple ("video/x-qt-part",
"format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('d', 'r', 'a', 'c'),
"width", G_TYPE_INT, state->width,
"height", G_TYPE_INT, state->height,
"framerate", GST_TYPE_FRACTION, state->fps_n,
state->fps_d,
"pixel-aspect-ratio", GST_TYPE_FRACTION, state->par_n,
state->par_d, NULL);
} else if (schro_parse->output_format == GST_SCHRO_PARSE_OUTPUT_AVI) {
caps = gst_caps_new_simple ("video/x-avi-part",
"format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('d', 'r', 'a', 'c'),
"width", G_TYPE_INT, state->width,
"height", G_TYPE_INT, state->height,
"framerate", GST_TYPE_FRACTION, state->fps_n,
state->fps_d,
"pixel-aspect-ratio", GST_TYPE_FRACTION, state->par_n,
state->par_d, NULL);
} else if (schro_parse->output_format == GST_SCHRO_PARSE_OUTPUT_MPEG_TS) {
caps = gst_caps_new_simple ("video/x-mpegts-part",
"format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('d', 'r', 'a', 'c'),
"width", G_TYPE_INT, state->width,
"height", G_TYPE_INT, state->height,
"framerate", GST_TYPE_FRACTION, state->fps_n,
state->fps_d,
"pixel-aspect-ratio", GST_TYPE_FRACTION, state->par_n,
state->par_d, NULL);
} else if (schro_parse->output_format == GST_SCHRO_PARSE_OUTPUT_MP4) {
caps = gst_caps_new_simple ("video/x-mp4-part",
"format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('d', 'r', 'a', 'c'),
"width", G_TYPE_INT, state->width,
"height", G_TYPE_INT, state->height,
"framerate", GST_TYPE_FRACTION, state->fps_n,
state->fps_d,
"pixel-aspect-ratio", GST_TYPE_FRACTION, state->par_n,
state->par_d, NULL);
} else {
g_assert_not_reached ();
}
return caps;
}