mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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6f23df65fa
Original commit message from CVS: Added fame decoder, no clue on how to actually implement it (yet)
593 lines
17 KiB
C
593 lines
17 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <fame.h>
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#include <string.h>
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#include "gstlibfame.h"
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#define FAMEENC_BUFFER_SIZE (300 * 1024)
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/* elementfactory information */
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static GstElementDetails gst_famedec_details = {
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"MPEG1 and MPEG4 video decoder using the famedec library",
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"Codec/Video/Encoder",
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"Uses famedec to decode MPEG video streams",
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VERSION,
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"famedec: (C) 2000-2001, Vivien Chappelier\n"
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"Thomas Vander Stichele <thomas@apestaart.org>",
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"(C) 2002",
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};
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static GQuark fame_object_name;
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/* FameEnc signals and args */
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enum {
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/* FILL ME */
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LAST_SIGNAL
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};
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enum {
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ARG_0,
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ARG_VERSION,
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ARG_FRAMERATE,
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ARG_BITRATE,
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ARG_QUALITY,
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ARG_PATTERN,
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ARG_FAME_VERBOSE,
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ARG_BUFFER_SIZE,
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ARG_FRAMES_PER_SEQUENCE,
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/* dynamically generated properties start here */
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ARG_FAME_PROPS_START
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/* FILL ME */
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};
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GST_PAD_TEMPLATE_FACTORY (sink_template_factory,
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"sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_CAPS_NEW (
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"famedec_sink_caps",
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"video/raw",
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"format", GST_PROPS_FOURCC (GST_MAKE_FOURCC ('I','4','2','0')),
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"width", GST_PROPS_INT_RANGE (16, 4096),
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"height", GST_PROPS_INT_RANGE (16, 4096)
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)
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)
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GST_PAD_TEMPLATE_FACTORY (src_template_factory,
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"src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_CAPS_NEW (
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"famedec_src_caps",
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"video/mpeg",
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"mpegversion", GST_PROPS_LIST (
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GST_PROPS_INT (1), GST_PROPS_INT (4)),
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"systemstream", GST_PROPS_BOOLEAN (FALSE)
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)
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);
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#define MAX_FRAME_RATES 16
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typedef struct
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{
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gint num;
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gint den;
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} frame_rate_entry;
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static const frame_rate_entry frame_rates[] =
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{
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{ 0, 0 },
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{ 24000, 1001 },
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{ 24, 1 },
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{ 25, 1 },
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{ 30000, 1001 },
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{ 30, 1 },
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{ 50, 1 },
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{ 60000, 1001 },
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{ 60, 1 },
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{ 0, 0 },
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{ 0, 0 },
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{ 0, 0 },
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{ 0, 0 },
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{ 0, 0 },
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{ 0, 0 },
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{ 0, 0 },
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};
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static gint
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framerate_to_index (num, den)
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{
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gint i;
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for (i = 0; i < MAX_FRAME_RATES; i++) {
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if (frame_rates[i].num == num && frame_rates[i].den == den)
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return i;
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}
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return 0;
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}
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#define GST_TYPE_FAMEENC_FRAMERATE (gst_famedec_framerate_get_type())
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static GType
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gst_famedec_framerate_get_type(void) {
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static GType famedec_framerate_type = 0;
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static GEnumValue famedec_framerate[] = {
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{1, "1", "24000/1001 (23.97)"},
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{2, "2", "24"},
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{3, "3", "25"},
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{4, "4", "30000/1001 (29.97)"},
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{5, "5", "30"},
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{6, "6", "50"},
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{7, "7", "60000/1001 (59.94)"},
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{8, "8", "60"},
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{0, NULL, NULL},
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};
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if (!famedec_framerate_type) {
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famedec_framerate_type = g_enum_register_static("GstFameEncFrameRate", famedec_framerate);
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}
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return famedec_framerate_type;
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}
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static void gst_famedec_class_init (GstFameEncClass *klass);
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static void gst_famedec_init (GstFameEnc *famedec);
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static void gst_famedec_dispose (GObject *object);
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static void gst_famedec_set_property (GObject *object, guint prop_id,
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const GValue *value, GParamSpec *pspec);
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static void gst_famedec_get_property (GObject *object, guint prop_id,
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GValue *value, GParamSpec *pspec);
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static void gst_famedec_chain (GstPad *pad, GstBuffer *buf);
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static GstElementClass *parent_class = NULL;
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/*static guint gst_famedec_signals[LAST_SIGNAL] = { 0 };*/
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GType
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gst_famedec_get_type (void)
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{
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static GType famedec_type = 0;
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if (!famedec_type) {
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static const GTypeInfo famedec_info = {
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sizeof (GstFameEncClass),
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NULL,
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NULL,
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(GClassInitFunc) gst_famedec_class_init,
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NULL,
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NULL,
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sizeof (GstFameEnc),
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0,
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(GInstanceInitFunc) gst_famedec_init,
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};
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famedec_type = g_type_register_static (GST_TYPE_ELEMENT,
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"GstFameEnc", &famedec_info, 0);
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}
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return famedec_type;
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}
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static int
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gst_famedec_item_compare (fame_list_t *item1, fame_list_t *item2)
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{
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return strcmp (item1->type, item2->type);
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}
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static void
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gst_famedec_class_init (GstFameEncClass *klass)
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{
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GObjectClass *gobject_class = NULL;
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GstElementClass *gstelement_class = NULL;
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fame_context_t *context;
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fame_list_t *walk;
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GList *props = NULL, *props_walk;
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gint current_prop = ARG_FAME_PROPS_START;
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gobject_class = (GObjectClass*) klass;
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gstelement_class = (GstElementClass*) klass;
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parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
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gobject_class->set_property = gst_famedec_set_property;
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gobject_class->get_property = gst_famedec_get_property;
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gobject_class->dispose = gst_famedec_dispose;
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fame_object_name = g_quark_from_string ("GstFameObjectName");
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context = fame_open ();
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g_assert (context);
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/* first sort the list */
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walk = context->type_list;
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while (walk) {
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props = g_list_insert_sorted (props, walk, (GCompareFunc)gst_famedec_item_compare);
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walk = walk->next;
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}
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props_walk = props;
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while (props_walk) {
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GArray *array;
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const gchar *current_type;
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gint current_len;
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gint current_value;
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fame_object_t *current_default;
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gint default_index;
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walk = (fame_list_t *)props_walk->data;
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array = g_array_new (TRUE, FALSE, sizeof (GEnumValue));
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current_type = walk->type;
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current_value = 0;
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current_len = strlen (walk->type);
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current_default = fame_get_object (context, current_type);
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default_index = 1;
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do {
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if (strstr (walk->type, "/")) {
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GEnumValue value;
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if (current_default == walk->item)
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default_index = current_value;
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value.value = current_value++;
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value.value_name = g_strdup (walk->type);
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value.value_nick = g_strdup (walk->item->name);
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g_array_append_val (array, value);
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}
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props_walk = g_list_next (props_walk);
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if (props_walk)
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walk = (fame_list_t *)props_walk->data;
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} while (props_walk && !strncmp (walk->type, current_type, current_len));
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if (array->len > 0) {
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GType type;
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GParamSpec *pspec;
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type = g_enum_register_static (g_strdup_printf ("GstFameEnc_%s", current_type), (GEnumValue *)array->data);
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pspec = g_param_spec_enum (current_type, current_type, g_strdup_printf ("The FAME \"%s\" object", current_type),
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type, default_index, G_PARAM_READWRITE);
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g_param_spec_set_qdata (pspec, fame_object_name, (gpointer) current_type);
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g_object_class_install_property (G_OBJECT_CLASS (klass), current_prop++, pspec);
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}
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}
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g_object_class_install_property (gobject_class, ARG_FRAMERATE,
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g_param_spec_enum ("framerate", "Frame Rate", "Number of frames per second",
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GST_TYPE_FAMEENC_FRAMERATE, 3, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, ARG_BITRATE,
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g_param_spec_int ("bitrate", "Bitrate", "Target bitrate (0 = VBR)",
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0, 5000000, 0, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, ARG_QUALITY,
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g_param_spec_int ("quality", "Quality", "Percentage of quality of compression (versus size)",
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0, 100, 75, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, ARG_PATTERN,
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g_param_spec_string ("pattern", "Pattern", "Encoding pattern of I, P, and B frames",
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"IPPPPPPPPPPP", G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, ARG_FRAMES_PER_SEQUENCE,
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g_param_spec_int ("frames_per_sequence", "Frames Per Sequdece",
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"The number of frames in one sequence",
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1, G_MAXINT, 12, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, ARG_FAME_VERBOSE,
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g_param_spec_boolean ("fame_verbose", "Fame Verbose", "Make FAME produce verbose output",
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FALSE, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, ARG_BUFFER_SIZE,
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g_param_spec_int ("buffer_size", "Buffer Size", "Set the decoding output buffer size",
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0, 1024*1024, FAMEENC_BUFFER_SIZE, G_PARAM_READWRITE));
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}
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static GstPadConnectReturn
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gst_famedec_sinkconnect (GstPad *pad, GstCaps *caps)
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{
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gint width, height;
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GstFameEnc *famedec;
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famedec = GST_FAMEENC (gst_pad_get_parent (pad));
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if (!GST_CAPS_IS_FIXED (caps))
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return GST_PAD_CONNECT_DELAYED;
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if (famedec->initialized) {
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GST_DEBUG(0, "error: famedec decoder already initialized !");
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return GST_PAD_CONNECT_REFUSED;
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}
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gst_caps_get_int (caps, "width", &width);
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gst_caps_get_int (caps, "height", &height);
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/* famedec requires width and height to be multiples of 16 */
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if (width % 16 != 0 || height % 16 != 0)
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return GST_PAD_CONNECT_REFUSED;
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famedec->fp.width = width;
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famedec->fp.height = height;
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famedec->fp.coding = (const char *) famedec->pattern;
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/* FIXME: choose good parameters */
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famedec->fp.slices_per_frame = 1;
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/* FIXME: handle these properly */
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famedec->fp.shape_quality = 75;
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famedec->fp.search_range = 0;
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famedec->fp.total_frames = 0;
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famedec->fp.retrieve_cb = NULL;
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fame_init (famedec->fc, &famedec->fp, famedec->buffer, famedec->buffer_size);
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famedec->initialized = TRUE;
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return GST_PAD_CONNECT_OK;
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}
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static void
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gst_famedec_init (GstFameEnc *famedec)
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{
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g_assert (famedec != NULL);
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g_assert (GST_IS_FAMEENC (famedec));
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/* open famedec */
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famedec->fc = fame_open ();
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g_assert (famedec->fc != NULL);
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/* create the sink and src pads */
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famedec->sinkpad = gst_pad_new_from_template (
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GST_PAD_TEMPLATE_GET (sink_template_factory), "sink");
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gst_element_add_pad (GST_ELEMENT (famedec), famedec->sinkpad);
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gst_pad_set_chain_function (famedec->sinkpad, gst_famedec_chain);
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gst_pad_set_connect_function (famedec->sinkpad, gst_famedec_sinkconnect);
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famedec->srcpad = gst_pad_new_from_template (
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GST_PAD_TEMPLATE_GET (src_template_factory), "src");
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gst_element_add_pad (GST_ELEMENT (famedec), famedec->srcpad);
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/* FIXME: set some more handler functions here */
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famedec->verbose = FALSE;
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/* reset the initial video state */
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famedec->fp.width = -1;
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famedec->fp.height = -1;
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famedec->initialized = FALSE;
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/* defaults */
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famedec->fp.bitrate = 0;
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famedec->fp.quality = 75;
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famedec->fp.frame_rate_num = 25;
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famedec->fp.frame_rate_den = 1; /* avoid floating point exceptions */
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famedec->fp.frames_per_sequence = 12;
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famedec->pattern = g_strdup ("IPPPPPPPPPP");
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/* allocate space for the buffer */
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famedec->buffer_size = FAMEENC_BUFFER_SIZE; /* FIXME */
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famedec->buffer = (unsigned char *) g_malloc (famedec->buffer_size);
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}
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static void
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gst_famedec_dispose (GObject *object)
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{
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GstFameEnc *famedec = GST_FAMEENC (object);
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G_OBJECT_CLASS (parent_class)->dispose (object);
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g_free (famedec->buffer);
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}
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static void
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gst_famedec_chain (GstPad *pad, GstBuffer *buf)
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{
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GstFameEnc *famedec;
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guchar *data;
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gulong size;
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gint frame_size;
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gint length;
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g_return_if_fail (pad != NULL);
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g_return_if_fail (GST_IS_PAD (pad));
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g_return_if_fail (buf != NULL);
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g_return_if_fail (GST_IS_BUFFER (buf));
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famedec = GST_FAMEENC (gst_pad_get_parent (pad));
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data = (guchar *) GST_BUFFER_DATA (buf);
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size = GST_BUFFER_SIZE (buf);
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GST_DEBUG (0,"gst_famedec_chain: got buffer of %ld bytes in '%s'",
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size, GST_OBJECT_NAME (famedec));
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/* the data contains the three planes side by side, with size w * h, w * h /4,
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* w * h / 4 */
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famedec->fy.w = famedec->fp.width;
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famedec->fy.h = famedec->fp.height;
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frame_size = famedec->fp.width * famedec->fp.height;
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famedec->fy.p = 0;
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famedec->fy.y = data;
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famedec->fy.u = data + frame_size;
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famedec->fy.v = famedec->fy.u + (frame_size >> 2);
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fame_start_frame (famedec->fc, &famedec->fy, NULL);
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while ((length = fame_encode_slice (famedec->fc)) != 0) {
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GstBuffer *outbuf;
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outbuf = gst_buffer_new ();
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/* FIXME: safeguard, remove me when a better way is found */
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if (length > FAMEENC_BUFFER_SIZE)
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g_warning ("FAMEENC_BUFFER_SIZE is defined too low, decoded slice has size %d !\n", length);
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GST_BUFFER_SIZE (outbuf) = length;
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GST_BUFFER_DATA (outbuf) = g_malloc (length);
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memcpy (GST_BUFFER_DATA(outbuf), famedec->buffer, length);
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GST_DEBUG (0,"gst_famedec_chain: pushing buffer of size %d",
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GST_BUFFER_SIZE(outbuf));
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gst_pad_push (famedec->srcpad, outbuf);
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}
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fame_end_frame (famedec->fc, NULL);
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gst_buffer_unref(buf);
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}
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static void
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gst_famedec_set_property (GObject *object, guint prop_id,
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const GValue *value, GParamSpec *pspec)
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{
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GstFameEnc *famedec;
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g_return_if_fail (GST_IS_FAMEENC (object));
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famedec = GST_FAMEENC (object);
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if (famedec->initialized) {
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GST_DEBUG(0, "error: famedec decoder already initialized, cannot set properties !");
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return;
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}
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switch (prop_id) {
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case ARG_FRAMERATE:
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{
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gint index = g_value_get_enum (value);
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famedec->fp.frame_rate_num = frame_rates[index].num;
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famedec->fp.frame_rate_den = frame_rates[index].den;
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break;
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}
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case ARG_BITRATE:
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famedec->fp.bitrate = g_value_get_int (value);
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break;
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case ARG_QUALITY:
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famedec->fp.quality = CLAMP (g_value_get_int (value), 0, 100);
|
|
break;
|
|
case ARG_PATTERN:
|
|
g_free (famedec->pattern);
|
|
famedec->pattern = g_strdup (g_value_get_string (value));
|
|
break;
|
|
case ARG_FAME_VERBOSE:
|
|
famedec->verbose = g_value_get_boolean (value);
|
|
break;
|
|
case ARG_BUFFER_SIZE:
|
|
famedec->buffer_size = g_value_get_int (value);
|
|
break;
|
|
case ARG_FRAMES_PER_SEQUENCE:
|
|
famedec->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 (famedec->fc, name, fame_get_object (famedec->fc, values[index].value_name));
|
|
}
|
|
else
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_famedec_get_property (GObject *object, guint prop_id,
|
|
GValue *value, GParamSpec *pspec)
|
|
{
|
|
GstFameEnc *famedec;
|
|
|
|
g_return_if_fail (GST_IS_FAMEENC (object));
|
|
famedec = GST_FAMEENC (object);
|
|
|
|
switch (prop_id) {
|
|
case ARG_FRAMERATE:
|
|
{
|
|
gint index = framerate_to_index (famedec->fp.frame_rate_num,
|
|
famedec->fp.frame_rate_den);
|
|
g_value_set_enum (value, index);
|
|
break;
|
|
}
|
|
case ARG_BITRATE:
|
|
g_value_set_int (value, famedec->fp.bitrate);
|
|
break;
|
|
case ARG_QUALITY:
|
|
g_value_set_int (value, famedec->fp.quality);
|
|
break;
|
|
case ARG_PATTERN:
|
|
g_value_set_string (value, g_strdup (famedec->pattern));
|
|
break;
|
|
case ARG_FAME_VERBOSE:
|
|
g_value_set_boolean (value, famedec->verbose);
|
|
break;
|
|
case ARG_BUFFER_SIZE:
|
|
g_value_set_int (value, famedec->buffer_size);
|
|
break;
|
|
case ARG_FRAMES_PER_SEQUENCE:
|
|
g_value_set_int (value, famedec->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 (famedec->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;
|
|
}
|
|
}
|
|
|
|
gboolean
|
|
gst_famedec_plugin_init (GModule *module, GstPlugin *plugin)
|
|
{
|
|
GstElementFactory *factory;
|
|
|
|
/* create an elementfactory for the famedec element */
|
|
factory = gst_element_factory_new ("famedec", GST_TYPE_FAMEENC,
|
|
&gst_famedec_details);
|
|
g_return_val_if_fail (factory != NULL, FALSE);
|
|
|
|
gst_element_factory_add_pad_template (factory,
|
|
GST_PAD_TEMPLATE_GET (sink_template_factory));
|
|
gst_element_factory_add_pad_template (factory,
|
|
GST_PAD_TEMPLATE_GET (src_template_factory));
|
|
|
|
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
|
|
|
|
return TRUE;
|
|
}
|
|
|