gstreamer/ext/libfame/gstlibfame.c
2012-04-05 18:02:56 +02:00

595 lines
17 KiB
C

/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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 <fame.h>
#include <string.h>
#include <math.h>
#include "gstlibfame.h"
#include <gst/video/video.h>
#define FAMEENC_BUFFER_SIZE (300 * 1024)
static GQuark fame_object_name;
/* FameEnc signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
ARG_0,
ARG_VERSION,
ARG_BITRATE,
ARG_QUALITY,
ARG_PATTERN,
ARG_FAME_VERBOSE,
ARG_BUFFER_SIZE,
ARG_FRAMES_PER_SEQUENCE,
/* dynamically generated properties start here */
ARG_FAME_PROPS_START
/* FILL ME */
};
static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-raw-yuv, "
"format = (fourcc) I420, "
"width = (int) [ 16, 4096 ], "
"height = (int) [ 16, 4096 ], "
"framerate = (double) { 23.976023976, 24.0, 25.0, 29.97002997, 30.0, "
" 50.0, 59.94005994, 60.0 }")
);
static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/mpeg, "
"mpegversion = (int) { 1, 4 }, "
"systemstream = (boolean) FALSE, "
"width = (int) [ 16, 4096 ], "
"height = (int) [ 16, 4096 ], "
"framerate = (double) { 23.976023976, 24.0, 25.0, 29.97002997, 30.0, "
" 50.0, 59.94005994, 60.0 }")
);
#define MAX_FRAME_RATES 9
typedef struct
{
gint num;
gint den;
}
frame_rate_entry;
static const frame_rate_entry frame_rates[] = {
{0, 0},
{24000, 1001},
{24, 1},
{25, 1},
{30000, 1001},
{30, 1},
{50, 1},
{60000, 1001},
{60, 1},
};
static gint
framerate_to_index (gfloat fps)
{
gint i;
gint idx = -1;
for (i = 1; i < MAX_FRAME_RATES; i++) {
if (idx == -1) {
idx = i;
} else {
gfloat old_diff = fabs ((1. * frame_rates[idx].num /
frame_rates[idx].den) - fps),
new_diff = fabs ((1. * frame_rates[i].num /
frame_rates[i].den) - fps);
if (new_diff < old_diff) {
idx = i;
}
}
}
return idx;
}
static void gst_fameenc_class_init (GstFameEncClass * klass);
static void gst_fameenc_base_init (GstFameEncClass * klass);
static void gst_fameenc_init (GstFameEnc * fameenc);
static void gst_fameenc_finalize (GObject * object);
static void gst_fameenc_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_fameenc_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void gst_fameenc_chain (GstPad * pad, GstData * _data);
static GstElementClass *parent_class = NULL;
/*static guint gst_fameenc_signals[LAST_SIGNAL] = { 0 };*/
GType
gst_fameenc_get_type (void)
{
static GType fameenc_type = 0;
if (!fameenc_type) {
static const GTypeInfo fameenc_info = {
sizeof (GstFameEncClass),
(GBaseInitFunc) gst_fameenc_base_init,
NULL,
(GClassInitFunc) gst_fameenc_class_init,
NULL,
NULL,
sizeof (GstFameEnc),
0,
(GInstanceInitFunc) gst_fameenc_init,
};
fameenc_type = g_type_register_static (GST_TYPE_ELEMENT,
"GstFameEnc", &fameenc_info, 0);
}
return fameenc_type;
}
static int
gst_fameenc_item_compare (fame_list_t * item1, fame_list_t * item2)
{
return strcmp (item1->type, item2->type);
}
static void
gst_fameenc_base_init (GstFameEncClass * klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&sink_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&src_template));
gst_element_class_set_details_simple (element_class,
"MPEG-1 and MPEG-4 video encoder", "Codec/Encoder/Video",
"Uses fameenc to encode MPEG video streams",
"Thomas Vander Stichele <thomas@apestaart.org>");
}
static void
gst_fameenc_class_init (GstFameEncClass * klass)
{
GObjectClass *gobject_class = NULL;
GstElementClass *gstelement_class = NULL;
fame_context_t *context;
fame_list_t *walk;
GList *props = NULL, *props_walk;
gint current_prop = ARG_FAME_PROPS_START;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
parent_class = g_type_class_peek_parent (klass);
gobject_class->set_property = gst_fameenc_set_property;
gobject_class->get_property = gst_fameenc_get_property;
gobject_class->finalize = gst_fameenc_finalize;
fame_object_name = g_quark_from_string ("GstFameObjectName");
context = fame_open ();
g_assert (context);
/* first sort the list */
walk = context->type_list;
while (walk) {
props =
g_list_insert_sorted (props, walk,
(GCompareFunc) gst_fameenc_item_compare);
walk = walk->next;
}
props_walk = props;
while (props_walk) {
GArray *array;
const gchar *current_type;
gint current_len;
gint current_value;
fame_object_t *current_default;
gint default_index;
walk = (fame_list_t *) props_walk->data;
array = g_array_new (TRUE, FALSE, sizeof (GEnumValue));
current_type = walk->type;
current_value = 0;
current_len = strlen (walk->type);
current_default = fame_get_object (context, current_type);
default_index = 1;
do {
if (strstr (walk->type, "/")) {
GEnumValue value;
if (current_default == walk->item)
default_index = current_value;
value.value = current_value++;
value.value_name = g_strdup (walk->type);
value.value_nick = g_strdup (walk->item->name);
g_array_append_val (array, value);
}
props_walk = g_list_next (props_walk);
if (props_walk)
walk = (fame_list_t *) props_walk->data;
} while (props_walk && !strncmp (walk->type, current_type, current_len));
if (array->len > 0) {
GType type;
GParamSpec *pspec;
type =
g_enum_register_static (g_strdup_printf ("GstFameEnc_%s",
current_type), (GEnumValue *) array->data);
pspec =
g_param_spec_enum (current_type, current_type,
g_strdup_printf ("The FAME \"%s\" object", current_type), type,
default_index, G_PARAM_READWRITE);
g_param_spec_set_qdata (pspec, fame_object_name, (gpointer) current_type);
g_object_class_install_property (G_OBJECT_CLASS (klass), current_prop++,
pspec);
}
}
g_object_class_install_property (gobject_class, ARG_BITRATE,
g_param_spec_int ("bitrate", "Bitrate", "Target bitrate (0 = VBR)",
0, 5000000, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, ARG_QUALITY,
g_param_spec_int ("quality", "Quality",
"Percentage of quality of compression (versus size)", 0, 100, 75,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, ARG_PATTERN,
g_param_spec_string ("pattern", "Pattern",
"Encoding pattern of I, P, and B frames", "IPPPPPPPPPPP",
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, ARG_FRAMES_PER_SEQUENCE,
g_param_spec_int ("frames-per-sequence", "Frames Per Sequence",
"The number of frames in one sequence", 1, G_MAXINT, 12,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, ARG_FAME_VERBOSE,
g_param_spec_boolean ("fame-verbose", "Fame Verbose",
"Make FAME produce verbose output", FALSE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, ARG_BUFFER_SIZE,
g_param_spec_int ("buffer-size", "Buffer Size",
"Set the decoding output buffer size", 0, 1024 * 1024,
FAMEENC_BUFFER_SIZE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
static GstPadLinkReturn
gst_fameenc_sink_link (GstPad * pad, const GstCaps * caps)
{
gint width, height, fps_idx;
gdouble fps;
GstFameEnc *fameenc;
GstStructure *structure;
fameenc = GST_FAMEENC (gst_pad_get_parent (pad));
if (fameenc->initialized) {
GST_DEBUG ("error: fameenc encoder already initialized !");
return GST_PAD_LINK_REFUSED;
}
structure = gst_caps_get_structure (caps, 0);
gst_structure_get_int (structure, "width", &width);
gst_structure_get_int (structure, "height", &height);
gst_structure_get_double (structure, "framerate", &fps);
/* fameenc requires width and height to be multiples of 16 */
if (width % 16 != 0 || height % 16 != 0)
return GST_PAD_LINK_REFUSED;
fps_idx = framerate_to_index (fps);
fameenc->fp.frame_rate_num = frame_rates[fps_idx].num;
fameenc->fp.frame_rate_den = frame_rates[fps_idx].den;
fameenc->time_interval = 0;
fameenc->fp.width = width;
fameenc->fp.height = height;
fameenc->fp.coding = (const char *) fameenc->pattern;
/* FIXME: choose good parameters */
fameenc->fp.slices_per_frame = 1;
/* FIXME: handle these properly */
fameenc->fp.shape_quality = 75;
fameenc->fp.search_range = 0;
fameenc->fp.total_frames = 0;
fameenc->fp.retrieve_cb = NULL;
fame_init (fameenc->fc, &fameenc->fp, fameenc->buffer, fameenc->buffer_size);
fameenc->initialized = TRUE;
fameenc->time_interval = 0;
return GST_PAD_LINK_OK;
}
static void
gst_fameenc_init (GstFameEnc * fameenc)
{
g_assert (fameenc != NULL);
g_assert (GST_IS_FAMEENC (fameenc));
/* open fameenc */
fameenc->fc = fame_open ();
g_assert (fameenc->fc != NULL);
/* create the sink and src pads */
fameenc->sinkpad = gst_pad_new_from_static_template (&sink_template, "sink");
gst_element_add_pad (GST_ELEMENT (fameenc), fameenc->sinkpad);
gst_pad_set_chain_function (fameenc->sinkpad, gst_fameenc_chain);
gst_pad_set_link_function (fameenc->sinkpad, gst_fameenc_sink_link);
fameenc->srcpad = gst_pad_new_from_static_template (&src_template, "src");
gst_element_add_pad (GST_ELEMENT (fameenc), fameenc->srcpad);
/* FIXME: set some more handler functions here */
fameenc->verbose = FALSE;
/* reset the initial video state */
fameenc->fp.width = -1;
fameenc->fp.height = -1;
fameenc->initialized = FALSE;
/* defaults */
fameenc->fp.bitrate = 0;
fameenc->fp.quality = 75;
fameenc->fp.frame_rate_num = 25;
fameenc->fp.frame_rate_den = 1; /* avoid floating point exceptions */
fameenc->fp.frames_per_sequence = 12;
fameenc->pattern = g_strdup ("IPPPPPPPPPP");
/* allocate space for the buffer */
fameenc->buffer_size = FAMEENC_BUFFER_SIZE; /* FIXME */
fameenc->buffer = (unsigned char *) g_malloc (fameenc->buffer_size);
fameenc->next_time = 0;
fameenc->time_interval = 0;
}
static void
gst_fameenc_finalize (GObject * object)
{
GstFameEnc *fameenc = GST_FAMEENC (object);
g_free (fameenc->buffer);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_fameenc_chain (GstPad * pad, GstData * _data)
{
GstBuffer *buf = GST_BUFFER (_data);
GstFameEnc *fameenc;
guchar *data;
gulong size;
gint frame_size;
gint length;
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD (pad));
g_return_if_fail (buf != NULL);
g_return_if_fail (GST_IS_BUFFER (buf));
fameenc = GST_FAMEENC (gst_pad_get_parent (pad));
data = (guchar *) GST_BUFFER_DATA (buf);
size = GST_BUFFER_SIZE (buf);
GST_DEBUG ("gst_fameenc_chain: got buffer of %ld bytes in '%s'",
size, GST_OBJECT_NAME (fameenc));
/* the data contains the three planes side by side, with size w * h, w * h /4,
* w * h / 4 */
fameenc->fy.w = fameenc->fp.width;
fameenc->fy.h = fameenc->fp.height;
frame_size = fameenc->fp.width * fameenc->fp.height;
fameenc->fy.p = 0;
fameenc->fy.y = data;
fameenc->fy.u = data + frame_size;
fameenc->fy.v = fameenc->fy.u + (frame_size >> 2);
fame_start_frame (fameenc->fc, &fameenc->fy, NULL);
while ((length = fame_encode_slice (fameenc->fc)) != 0) {
GstBuffer *outbuf;
outbuf = gst_buffer_new ();
/* FIXME: safeguard, remove me when a better way is found */
if (length > FAMEENC_BUFFER_SIZE)
g_warning
("FAMEENC_BUFFER_SIZE is defined too low, encoded slice has size %d !\n",
length);
if (!fameenc->time_interval) {
fameenc->time_interval =
GST_SECOND * fameenc->fp.frame_rate_den / fameenc->fp.frame_rate_num;
}
fameenc->next_time += fameenc->time_interval;
GST_BUFFER_SIZE (outbuf) = length;
GST_BUFFER_TIMESTAMP (outbuf) = fameenc->next_time;
GST_BUFFER_DATA (outbuf) = g_malloc (length);
memcpy (GST_BUFFER_DATA (outbuf), fameenc->buffer, length);
GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf);
GST_DEBUG ("gst_fameenc_chain: pushing buffer of size %d",
GST_BUFFER_SIZE (outbuf));
gst_pad_push (fameenc->srcpad, GST_DATA (outbuf));
}
fame_end_frame (fameenc->fc, NULL);
gst_buffer_unref (buf);
}
static void
gst_fameenc_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstFameEnc *fameenc;
g_return_if_fail (GST_IS_FAMEENC (object));
fameenc = GST_FAMEENC (object);
if (fameenc->initialized) {
GST_DEBUG
("error: fameenc encoder already initialized, cannot set properties !");
return;
}
switch (prop_id) {
case ARG_BITRATE:
fameenc->fp.bitrate = g_value_get_int (value);
break;
case ARG_QUALITY:
fameenc->fp.quality = CLAMP (g_value_get_int (value), 0, 100);
break;
case ARG_PATTERN:
g_free (fameenc->pattern);
fameenc->pattern = g_strdup (g_value_get_string (value));
break;
case ARG_FAME_VERBOSE:
fameenc->verbose = g_value_get_boolean (value);
break;
case ARG_BUFFER_SIZE:
fameenc->buffer_size = g_value_get_int (value);
break;
case ARG_FRAMES_PER_SEQUENCE:
fameenc->fp.frames_per_sequence = g_value_get_int (value);
break;
default:
if (prop_id >= ARG_FAME_PROPS_START) {
gchar *name;
gint index = g_value_get_enum (value);
GEnumValue *values;
values = G_ENUM_CLASS (g_type_class_ref (pspec->value_type))->values;
name = (gchar *) g_param_spec_get_qdata (pspec, fame_object_name);
fame_register (fameenc->fc, name, fame_get_object (fameenc->fc,
values[index].value_name));
} else
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_fameenc_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstFameEnc *fameenc;
g_return_if_fail (GST_IS_FAMEENC (object));
fameenc = GST_FAMEENC (object);
switch (prop_id) {
case ARG_BITRATE:
g_value_set_int (value, fameenc->fp.bitrate);
break;
case ARG_QUALITY:
g_value_set_int (value, fameenc->fp.quality);
break;
case ARG_PATTERN:
g_value_set_string (value, fameenc->pattern);
break;
case ARG_FAME_VERBOSE:
g_value_set_boolean (value, fameenc->verbose);
break;
case ARG_BUFFER_SIZE:
g_value_set_int (value, fameenc->buffer_size);
break;
case ARG_FRAMES_PER_SEQUENCE:
g_value_set_int (value, fameenc->fp.frames_per_sequence);
break;
default:
if (prop_id >= ARG_FAME_PROPS_START) {
gchar *name;
gint index = 0;
GEnumValue *values;
fame_object_t *f_object;
values = G_ENUM_CLASS (g_type_class_ref (pspec->value_type))->values;
name = (gchar *) g_param_spec_get_qdata (pspec, fame_object_name);
f_object = fame_get_object (fameenc->fc, name);
while (values[index].value_name) {
if (!strcmp (values[index].value_nick, f_object->name)) {
g_value_set_enum (value, index);
return;
}
index++;
}
}
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
plugin_init (GstPlugin * plugin)
{
return gst_element_register (plugin, "fameenc",
GST_RANK_NONE, GST_TYPE_FAMEENC);
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
fameenc,
"Fast Assembly MPEG Encoder",
plugin_init,
LIBFAME_VERSION, "LGPL", "libfame", "http://fame.sourceforge.net/")