gstreamer/ext/ffmpeg/gstffmpegenc.c
Ronald S. Bultje 68331a35b5 ext/ffmpeg/: Oops, unbreak audio.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_register):
* ext/ffmpeg/gstffmpegenc.c: (gst_ffmpegenc_register):
Oops, unbreak audio.
2005-01-28 12:22:54 +00:00

754 lines
22 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 <assert.h>
#include <string.h>
#ifdef HAVE_FFMPEG_UNINSTALLED
#include <avcodec.h>
#else
#include <ffmpeg/avcodec.h>
#endif
#include <gst/gst.h>
#include "gstffmpeg.h"
#include "gstffmpegcodecmap.h"
typedef struct _GstFFMpegEnc GstFFMpegEnc;
struct _GstFFMpegEnc
{
GstElement element;
/* We need to keep track of our pads, so we do so here. */
GstPad *srcpad;
GstPad *sinkpad;
AVCodecContext *context;
AVFrame *picture;
gboolean opened;
GstBuffer *cache;
/* cache */
gulong bitrate;
gint me_method;
gint gop_size;
gulong buffer_size;
};
typedef struct _GstFFMpegEncClass GstFFMpegEncClass;
struct _GstFFMpegEncClass
{
GstElementClass parent_class;
AVCodec *in_plugin;
GstPadTemplate *srctempl, *sinktempl;
GstCaps *sinkcaps;
};
typedef struct
{
AVCodec *in_plugin;
GstCaps *srccaps, *sinkcaps;
} GstFFMpegEncClassParams;
#define GST_TYPE_FFMPEGENC \
(gst_ffmpegenc_get_type())
#define GST_FFMPEGENC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_FFMPEGENC,GstFFMpegEnc))
#define GST_FFMPEGENC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_FFMPEGENC,GstFFMpegEncClass))
#define GST_IS_FFMPEGENC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_FFMPEGENC))
#define GST_IS_FFMPEGENC_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_FFMPEGENC))
#define VIDEO_BUFFER_SIZE (1024*1024)
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
ARG_0,
ARG_BIT_RATE,
ARG_GOP_SIZE,
ARG_ME_METHOD,
ARG_BUFSIZE
/* FILL ME */
};
#define GST_TYPE_ME_METHOD (gst_ffmpegenc_me_method_get_type())
static GType
gst_ffmpegenc_me_method_get_type (void)
{
static GType ffmpegenc_me_method_type = 0;
static GEnumValue ffmpegenc_me_methods[] = {
{ME_ZERO, "0", "zero"},
{ME_FULL, "1", "full"},
{ME_LOG, "2", "logarithmic"},
{ME_PHODS, "3", "phods"},
{ME_EPZS, "4", "epzs"},
{ME_X1, "5", "x1"},
{0, NULL, NULL},
};
if (!ffmpegenc_me_method_type) {
ffmpegenc_me_method_type =
g_enum_register_static ("GstFFMpegEncMeMethod", ffmpegenc_me_methods);
}
return ffmpegenc_me_method_type;
}
static GHashTable *enc_global_plugins;
/* A number of functon prototypes are given so we can refer to them later. */
static void gst_ffmpegenc_class_init (GstFFMpegEncClass * klass);
static void gst_ffmpegenc_base_init (GstFFMpegEncClass * klass);
static void gst_ffmpegenc_init (GstFFMpegEnc * ffmpegenc);
static void gst_ffmpegenc_dispose (GObject * object);
static GstPadLinkReturn gst_ffmpegenc_link (GstPad * pad,
const GstCaps * caps);
static GstCaps * gst_ffmpegenc_getcaps (GstPad * pad);
static void gst_ffmpegenc_chain_video (GstPad * pad, GstData * _data);
static void gst_ffmpegenc_chain_audio (GstPad * pad, GstData * _data);
static void gst_ffmpegenc_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_ffmpegenc_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static GstElementStateReturn gst_ffmpegenc_change_state (GstElement * element);
static GstElementClass *parent_class = NULL;
/*static guint gst_ffmpegenc_signals[LAST_SIGNAL] = { 0 }; */
static void
gst_ffmpegenc_base_init (GstFFMpegEncClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstFFMpegEncClassParams *params;
GstElementDetails details;
GstPadTemplate *srctempl, *sinktempl;
params = g_hash_table_lookup (enc_global_plugins,
GINT_TO_POINTER (G_OBJECT_CLASS_TYPE (gobject_class)));
/* HACK: if we don't have a GType yet, our params are stored at position 0 */
if (!params) {
params = g_hash_table_lookup (enc_global_plugins, GINT_TO_POINTER (0));
}
g_assert (params);
/* construct the element details struct */
details.longname = g_strdup_printf ("FFMPEG %s encoder",
gst_ffmpeg_get_codecid_longname (params->in_plugin->id));
details.klass = g_strdup_printf ("Codec/Encoder/%s",
(params->in_plugin->type == CODEC_TYPE_VIDEO) ? "Video" : "Audio");
details.description = g_strdup_printf ("FFMPEG %s encoder",
params->in_plugin->name);
details.author = "Wim Taymans <wim.taymans@chello.be>, "
"Ronald Bultje <rbultje@ronald.bitfreak.net>";
gst_element_class_set_details (element_class, &details);
g_free (details.longname);
g_free (details.klass);
g_free (details.description);
/* pad templates */
sinktempl = gst_pad_template_new ("sink", GST_PAD_SINK,
GST_PAD_ALWAYS, params->sinkcaps);
srctempl = gst_pad_template_new ("src", GST_PAD_SRC,
GST_PAD_ALWAYS, params->srccaps);
gst_element_class_add_pad_template (element_class, srctempl);
gst_element_class_add_pad_template (element_class, sinktempl);
klass->in_plugin = params->in_plugin;
klass->srctempl = srctempl;
klass->sinktempl = sinktempl;
klass->sinkcaps = NULL;
}
static void
gst_ffmpegenc_class_init (GstFFMpegEncClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
if (klass->in_plugin->type == CODEC_TYPE_VIDEO) {
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_BIT_RATE,
g_param_spec_ulong ("bitrate", "Bit Rate",
"Target Video Bitrate", 0, G_MAXULONG, 300000, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_GOP_SIZE,
g_param_spec_int ("gop_size", "GOP Size",
"Number of frames within one GOP",
0, G_MAXINT, 15, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_ME_METHOD,
g_param_spec_enum ("me_method", "ME Method",
"Motion Estimation Method",
GST_TYPE_ME_METHOD, ME_LOG, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_BUFSIZE,
g_param_spec_ulong ("buffer_size", "Buffer Size",
"Size of the video buffers", 0, G_MAXULONG, 0, G_PARAM_READWRITE));
} else if (klass->in_plugin->type == CODEC_TYPE_AUDIO) {
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_BIT_RATE,
g_param_spec_ulong ("bitrate", "Bit Rate",
"Target Audio Bitrate", 0, G_MAXULONG, 128000, G_PARAM_READWRITE));
}
gobject_class->set_property = gst_ffmpegenc_set_property;
gobject_class->get_property = gst_ffmpegenc_get_property;
gstelement_class->change_state = gst_ffmpegenc_change_state;
gobject_class->dispose = gst_ffmpegenc_dispose;
}
static void
gst_ffmpegenc_init (GstFFMpegEnc * ffmpegenc)
{
GstFFMpegEncClass *oclass =
(GstFFMpegEncClass *) (G_OBJECT_GET_CLASS (ffmpegenc));
/* setup pads */
ffmpegenc->sinkpad = gst_pad_new_from_template (oclass->sinktempl, "sink");
gst_pad_set_link_function (ffmpegenc->sinkpad, gst_ffmpegenc_link);
gst_pad_set_getcaps_function (ffmpegenc->sinkpad, gst_ffmpegenc_getcaps);
ffmpegenc->srcpad = gst_pad_new_from_template (oclass->srctempl, "src");
gst_pad_use_explicit_caps (ffmpegenc->srcpad);
/* ffmpeg objects */
ffmpegenc->context = avcodec_alloc_context ();
ffmpegenc->picture = avcodec_alloc_frame ();
ffmpegenc->opened = FALSE;
if (oclass->in_plugin->type == CODEC_TYPE_VIDEO) {
gst_pad_set_chain_function (ffmpegenc->sinkpad, gst_ffmpegenc_chain_video);
ffmpegenc->bitrate = 300000;
ffmpegenc->buffer_size = 512 * 1024;
ffmpegenc->gop_size = 15;
} else if (oclass->in_plugin->type == CODEC_TYPE_AUDIO) {
gst_pad_set_chain_function (ffmpegenc->sinkpad, gst_ffmpegenc_chain_audio);
ffmpegenc->bitrate = 128000;
}
gst_element_add_pad (GST_ELEMENT (ffmpegenc), ffmpegenc->sinkpad);
gst_element_add_pad (GST_ELEMENT (ffmpegenc), ffmpegenc->srcpad);
}
static void
gst_ffmpegenc_dispose (GObject * object)
{
GstFFMpegEnc *ffmpegenc = (GstFFMpegEnc *) object;
/* close old session */
if (ffmpegenc->opened) {
avcodec_close (ffmpegenc->context);
ffmpegenc->opened = FALSE;
}
/* clean up remaining allocated data */
av_free (ffmpegenc->context);
av_free (ffmpegenc->picture);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static GstCaps *
gst_ffmpegenc_getcaps (GstPad * pad)
{
GstFFMpegEnc *ffmpegenc = (GstFFMpegEnc *) gst_pad_get_parent (pad);
GstFFMpegEncClass *oclass =
(GstFFMpegEncClass *) G_OBJECT_GET_CLASS (ffmpegenc);
AVCodecContext *ctx;
enum PixelFormat pixfmt;
GstCaps *caps = NULL;
/* audio needs no special care */
if (oclass->in_plugin->type == CODEC_TYPE_AUDIO) {
return gst_caps_copy (gst_pad_get_pad_template_caps (pad));
}
/* cached */
if (oclass->sinkcaps) {
return gst_caps_copy (oclass->sinkcaps);
}
/* create cache etc. */
ctx = avcodec_alloc_context ();
if (!ctx) {
return gst_caps_copy (gst_pad_get_pad_template_caps (pad));
}
/* set some default properties */
ctx->width = 384;
ctx->height = 288;
ctx->frame_rate_base = DEFAULT_FRAME_RATE_BASE;
ctx->frame_rate = 25 * DEFAULT_FRAME_RATE_BASE;
ctx->bit_rate = 350 * 1000;
/* makes it silent */
ctx->strict_std_compliance = -1;
for (pixfmt = 0; pixfmt < PIX_FMT_NB; pixfmt++) {
ctx->pix_fmt = pixfmt;
if (avcodec_open (ctx, oclass->in_plugin) >= 0 &&
ctx->pix_fmt == pixfmt) {
ctx->width = -1;
if (!caps)
caps = gst_caps_new_empty ();
gst_caps_append (caps,
gst_ffmpeg_codectype_to_caps (oclass->in_plugin->type, ctx));
}
/* FIXME: ffmpeg likes to crash on this */
avcodec_close (ctx);
}
av_free (ctx);
/* make sure we have something */
if (!caps) {
return gst_caps_copy (gst_pad_get_pad_template_caps (pad));
}
oclass->sinkcaps = gst_caps_copy (caps);
return caps;
}
static GstPadLinkReturn
gst_ffmpegenc_link (GstPad * pad, const GstCaps * caps)
{
GstCaps *other_caps;
GstCaps *allowed_caps;
GstCaps *icaps;
enum PixelFormat pix_fmt;
GstFFMpegEnc *ffmpegenc = (GstFFMpegEnc *) gst_pad_get_parent (pad);
GstFFMpegEncClass *oclass =
(GstFFMpegEncClass *) G_OBJECT_GET_CLASS (ffmpegenc);
/* close old session */
if (ffmpegenc->opened) {
avcodec_close (ffmpegenc->context);
ffmpegenc->opened = FALSE;
}
/* set defaults */
avcodec_get_context_defaults (ffmpegenc->context);
/* if we set it in _getcaps we should set it also in _link */
ffmpegenc->context->strict_std_compliance = -1;
/* user defined properties */
ffmpegenc->context->bit_rate = ffmpegenc->bitrate;
ffmpegenc->context->bit_rate_tolerance = ffmpegenc->bitrate;
ffmpegenc->context->gop_size = ffmpegenc->gop_size;
ffmpegenc->context->me_method = ffmpegenc->me_method;
/* general properties */
ffmpegenc->context->qmin = 3;
ffmpegenc->context->qmax = 15;
ffmpegenc->context->max_qdiff = 3;
/* fetch pix_fmt and so on */
gst_ffmpeg_caps_with_codectype (oclass->in_plugin->type,
caps, ffmpegenc->context);
pix_fmt = ffmpegenc->context->pix_fmt;
/* open codec */
if (avcodec_open (ffmpegenc->context, oclass->in_plugin) < 0) {
avcodec_close (ffmpegenc->context);
GST_DEBUG ("ffenc_%s: Failed to open FFMPEG codec",
oclass->in_plugin->name);
return GST_PAD_LINK_REFUSED;
}
/* is the colourspace correct? */
if (pix_fmt != ffmpegenc->context->pix_fmt) {
avcodec_close (ffmpegenc->context);
GST_DEBUG ("ffenc_%s: AV wants different colourspace (%d given, %d wanted)",
oclass->in_plugin->name, pix_fmt, ffmpegenc->context->pix_fmt);
return GST_PAD_LINK_REFUSED;
}
/* some codecs support more than one format, first auto-choose one */
allowed_caps = gst_pad_get_allowed_caps (ffmpegenc->srcpad);
gst_ffmpeg_caps_with_codecid (oclass->in_plugin->id,
oclass->in_plugin->type, allowed_caps, ffmpegenc->context);
/* try to set this caps on the other side */
other_caps = gst_ffmpeg_codecid_to_caps (oclass->in_plugin->id,
ffmpegenc->context, TRUE);
if (!other_caps) {
avcodec_close (ffmpegenc->context);
GST_DEBUG ("Unsupported codec - no caps found");
return GST_PAD_LINK_REFUSED;
}
icaps = gst_caps_intersect (allowed_caps, other_caps);
gst_caps_free (allowed_caps);
gst_caps_free (other_caps);
if (gst_caps_is_empty (icaps)) {
gst_caps_free (icaps);
return GST_PAD_LINK_REFUSED;
}
if (gst_caps_get_size (icaps) > 1) {
GstCaps *newcaps;
newcaps =
gst_caps_new_full (gst_structure_copy (gst_caps_get_structure (icaps,
0)), NULL);
gst_caps_free (icaps);
icaps = newcaps;
}
/* FIXME set_explicit_caps is not supposed to be used in a pad link
* function. */
if (!gst_pad_set_explicit_caps (ffmpegenc->srcpad, icaps)) {
avcodec_close (ffmpegenc->context);
gst_caps_free (icaps);
return GST_PAD_LINK_REFUSED;
}
gst_caps_free (icaps);
/* success! */
ffmpegenc->opened = TRUE;
return GST_PAD_LINK_OK;
}
static void
gst_ffmpegenc_chain_video (GstPad * pad, GstData * _data)
{
GstFFMpegEnc *ffmpegenc = (GstFFMpegEnc *) (gst_pad_get_parent (pad));
GstBuffer *inbuf = GST_BUFFER (_data), *outbuf;
GstFFMpegEncClass *oclass =
(GstFFMpegEncClass *) (G_OBJECT_GET_CLASS (ffmpegenc));
gint ret_size = 0;
/* FIXME: events (discont (flush!) and eos (close down) etc.) */
outbuf = gst_buffer_new_and_alloc (ffmpegenc->buffer_size);
gst_ffmpeg_avpicture_fill ((AVPicture *) ffmpegenc->picture,
GST_BUFFER_DATA (inbuf),
ffmpegenc->context->pix_fmt,
ffmpegenc->context->width, ffmpegenc->context->height);
ffmpegenc->picture->pts = GST_BUFFER_TIMESTAMP (inbuf) / 1000;
ret_size = avcodec_encode_video (ffmpegenc->context,
GST_BUFFER_DATA (outbuf),
GST_BUFFER_MAXSIZE (outbuf), ffmpegenc->picture);
if (ret_size < 0) {
GST_ELEMENT_ERROR (ffmpegenc, LIBRARY, ENCODE, (NULL),
("ffenc_%s: failed to encode buffer", oclass->in_plugin->name));
gst_buffer_unref (inbuf);
gst_buffer_unref (outbuf);
return;
}
GST_BUFFER_SIZE (outbuf) = ret_size;
GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (inbuf);
GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (inbuf);
gst_pad_push (ffmpegenc->srcpad, GST_DATA (outbuf));
gst_buffer_unref (inbuf);
}
static void
gst_ffmpegenc_chain_audio (GstPad * pad, GstData * _data)
{
GstBuffer *inbuf = GST_BUFFER (_data);
GstBuffer *outbuf = NULL, *subbuf;
GstFFMpegEnc *ffmpegenc = (GstFFMpegEnc *) (gst_pad_get_parent (pad));
GstFFMpegEncClass *oclass =
(GstFFMpegEncClass *) (G_OBJECT_GET_CLASS (ffmpegenc));
gint size, ret_size = 0, in_size, frame_size;
size = GST_BUFFER_SIZE (inbuf);
/* FIXME: events (discont (flush!) and eos (close down) etc.) */
frame_size = ffmpegenc->context->frame_size * 2 *
ffmpegenc->context->channels;
in_size = size;
if (ffmpegenc->cache)
in_size += GST_BUFFER_SIZE (ffmpegenc->cache);
while (1) {
/* do we have enough data for one frame? */
if (in_size / (2 * ffmpegenc->context->channels) <
ffmpegenc->context->frame_size) {
if (in_size > size) {
/* this is panic! we got a buffer, but still don't have enough
* data. Merge them and retry in the next cycle... */
ffmpegenc->cache = gst_buffer_merge (ffmpegenc->cache, inbuf);
} else if (in_size == size) {
/* exactly the same! how wonderful */
ffmpegenc->cache = inbuf;
} else if (in_size > 0) {
ffmpegenc->cache = gst_buffer_create_sub (inbuf, size - in_size,
in_size);
GST_BUFFER_DURATION (ffmpegenc->cache) =
GST_BUFFER_DURATION (inbuf) * GST_BUFFER_SIZE (ffmpegenc->cache) /
size;
GST_BUFFER_TIMESTAMP (ffmpegenc->cache) =
GST_BUFFER_TIMESTAMP (inbuf) +
(GST_BUFFER_DURATION (inbuf) * (size - in_size) / size);
gst_buffer_unref (inbuf);
} else {
gst_buffer_unref (inbuf);
}
return;
}
/* create the frame */
if (in_size > size) {
/* merge */
subbuf = gst_buffer_create_sub (inbuf, 0, frame_size - (in_size - size));
GST_BUFFER_DURATION (subbuf) =
GST_BUFFER_DURATION (inbuf) * GST_BUFFER_SIZE (subbuf) / size;
subbuf = gst_buffer_merge (ffmpegenc->cache, subbuf);
ffmpegenc->cache = NULL;
} else {
subbuf = gst_buffer_create_sub (inbuf, size - in_size, frame_size);
GST_BUFFER_DURATION (subbuf) =
GST_BUFFER_DURATION (inbuf) * GST_BUFFER_SIZE (subbuf) / size;
GST_BUFFER_TIMESTAMP (subbuf) =
GST_BUFFER_TIMESTAMP (inbuf) + (GST_BUFFER_DURATION (inbuf) *
(size - in_size) / size);
}
outbuf = gst_buffer_new_and_alloc (GST_BUFFER_SIZE (inbuf));
ret_size = avcodec_encode_audio (ffmpegenc->context,
GST_BUFFER_DATA (outbuf),
GST_BUFFER_MAXSIZE (outbuf), (const short int *)
GST_BUFFER_DATA (subbuf));
if (ret_size < 0) {
g_warning ("ffenc_%s: failed to encode buffer", oclass->in_plugin->name);
gst_buffer_unref (inbuf);
gst_buffer_unref (outbuf);
gst_buffer_unref (subbuf);
return;
}
GST_BUFFER_SIZE (outbuf) = ret_size;
GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (subbuf);
GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (subbuf);
gst_pad_push (ffmpegenc->srcpad, GST_DATA (outbuf));
in_size -= frame_size;
gst_buffer_unref (subbuf);
}
}
static void
gst_ffmpegenc_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstFFMpegEnc *ffmpegenc;
/* Get a pointer of the right type. */
ffmpegenc = (GstFFMpegEnc *) (object);
/* Check the argument id to see which argument we're setting. */
switch (prop_id) {
case ARG_BIT_RATE:
ffmpegenc->bitrate = g_value_get_ulong (value);
break;
case ARG_GOP_SIZE:
ffmpegenc->gop_size = g_value_get_int (value);
break;
case ARG_ME_METHOD:
ffmpegenc->me_method = g_value_get_enum (value);
break;
case ARG_BUFSIZE:
ffmpegenc->buffer_size = g_value_get_ulong (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/* The set function is simply the inverse of the get fuction. */
static void
gst_ffmpegenc_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstFFMpegEnc *ffmpegenc;
/* It's not null if we got it, but it might not be ours */
ffmpegenc = (GstFFMpegEnc *) (object);
switch (prop_id) {
case ARG_BIT_RATE:
g_value_set_ulong (value, ffmpegenc->bitrate);
break;
case ARG_GOP_SIZE:
g_value_set_int (value, ffmpegenc->gop_size);
break;
case ARG_ME_METHOD:
g_value_set_enum (value, ffmpegenc->me_method);
break;
case ARG_BUFSIZE:
g_value_set_ulong (value, ffmpegenc->buffer_size);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstElementStateReturn
gst_ffmpegenc_change_state (GstElement * element)
{
GstFFMpegEnc *ffmpegenc = (GstFFMpegEnc *) element;
gint transition = GST_STATE_TRANSITION (element);
switch (transition) {
case GST_STATE_PAUSED_TO_READY:
if (ffmpegenc->opened) {
avcodec_close (ffmpegenc->context);
ffmpegenc->opened = FALSE;
}
if (ffmpegenc->cache) {
gst_buffer_unref (ffmpegenc->cache);
ffmpegenc->cache = NULL;
}
break;
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
return GST_STATE_SUCCESS;
}
gboolean
gst_ffmpegenc_register (GstPlugin * plugin)
{
GTypeInfo typeinfo = {
sizeof (GstFFMpegEncClass),
(GBaseInitFunc) gst_ffmpegenc_base_init,
NULL,
(GClassInitFunc) gst_ffmpegenc_class_init,
NULL,
NULL,
sizeof (GstFFMpegEnc),
0,
(GInstanceInitFunc) gst_ffmpegenc_init,
};
GType type;
AVCodec *in_plugin;
in_plugin = first_avcodec;
enc_global_plugins = g_hash_table_new (NULL, NULL);
while (in_plugin) {
gchar *type_name;
GstCaps *srccaps, *sinkcaps;
GstFFMpegEncClassParams *params;
/* no quasi codecs, please */
if (in_plugin->id == CODEC_ID_RAWVIDEO ||
in_plugin->id == CODEC_ID_ZLIB ||
(in_plugin->id >= CODEC_ID_PCM_S16LE &&
in_plugin->id <= CODEC_ID_PCM_ALAW)) {
goto next;
}
/* only encoders */
if (!in_plugin->encode) {
goto next;
}
/* name */
if (!gst_ffmpeg_get_codecid_longname (in_plugin->id))
goto next;
/* first make sure we've got a supported type */
srccaps = gst_ffmpeg_codecid_to_caps (in_plugin->id, NULL, TRUE);
if (in_plugin->type == CODEC_TYPE_VIDEO) {
sinkcaps = gst_caps_from_string ("video/x-raw-rgb; video/x-raw-yuv");
} else {
sinkcaps = gst_ffmpeg_codectype_to_caps (in_plugin->type, NULL);
}
if (!sinkcaps || !srccaps)
goto next;
/* construct the type */
type_name = g_strdup_printf ("ffenc_%s", in_plugin->name);
/* if it's already registered, drop it */
if (g_type_from_name (type_name)) {
g_free (type_name);
goto next;
}
params = g_new0 (GstFFMpegEncClassParams, 1);
params->in_plugin = in_plugin;
params->srccaps = srccaps;
params->sinkcaps = sinkcaps;
g_hash_table_insert (enc_global_plugins,
GINT_TO_POINTER (0), (gpointer) params);
/* create the glib type now */
type = g_type_register_static (GST_TYPE_ELEMENT, type_name, &typeinfo, 0);
if (!gst_element_register (plugin, type_name, GST_RANK_NONE, type)) {
g_free (type_name);
return FALSE;
}
g_free (type_name);
g_hash_table_insert (enc_global_plugins,
GINT_TO_POINTER (type), (gpointer) params);
next:
in_plugin = in_plugin->next;
}
g_hash_table_remove (enc_global_plugins, GINT_TO_POINTER (0));
return TRUE;
}