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gstreamer/ext/ffmpeg/gstffmpegenc.c
Wim Taymans 7d531c06bb ffenc: pass the input size to the encoder 
Pass the input buffer size to the encoder instead of the expected output size.
This is needed to make fixed input/output encoder work.
2010-10-06 16:58:34 +02:00

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/* 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>
/* for stats file handling */
#include <stdio.h>
#include <glib/gstdio.h>
#include <errno.h>
#ifdef HAVE_FFMPEG_UNINSTALLED
#include <avcodec.h>
#else
#include <libavcodec/avcodec.h>
#endif
#include <gst/gst.h>
#include "gstffmpeg.h"
#include "gstffmpegcodecmap.h"
#include "gstffmpegutils.h"
#include "gstffmpegenc.h"
#include "gstffmpegcfg.h"
#define DEFAULT_VIDEO_BITRATE 300000 /* in bps */
#define DEFAULT_VIDEO_GOP_SIZE 15
#define DEFAULT_AUDIO_BITRATE 128000
#define DEFAULT_WIDTH 352
#define DEFAULT_HEIGHT 288
#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,
ARG_RTP_PAYLOAD_SIZE,
ARG_CFG_BASE
};
#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, "None (Very low quality)", "zero"},
{ME_FULL, "Full (Slow, unmaintained)", "full"},
{ME_LOG, "Logarithmic (Low quality, unmaintained)", "logarithmic"},
{ME_PHODS, "phods (Low quality, unmaintained)", "phods"},
{ME_EPZS, "EPZS (Best quality, Fast)", "epzs"},
{ME_X1, "X1 (Experimental)", "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;
}
/* A number of function 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_finalize (GObject * object);
static gboolean gst_ffmpegenc_setcaps (GstPad * pad, GstCaps * caps);
static GstCaps *gst_ffmpegenc_getcaps (GstPad * pad);
static GstFlowReturn gst_ffmpegenc_chain_video (GstPad * pad,
GstBuffer * buffer);
static GstFlowReturn gst_ffmpegenc_chain_audio (GstPad * pad,
GstBuffer * buffer);
static gboolean gst_ffmpegenc_event_video (GstPad * pad, GstEvent * event);
static gboolean gst_ffmpegenc_event_src (GstPad * pad, GstEvent * event);
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 GstStateChangeReturn gst_ffmpegenc_change_state (GstElement * element,
GstStateChange transition);
#define GST_FFENC_PARAMS_QDATA g_quark_from_static_string("ffenc-params")
static GstElementClass *parent_class = NULL;
/*static guint gst_ffmpegenc_signals[LAST_SIGNAL] = { 0 }; */
static void
gst_ffmpegenc_base_init (GstFFMpegEncClass * klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
AVCodec *in_plugin;
GstPadTemplate *srctempl = NULL, *sinktempl = NULL;
GstCaps *srccaps = NULL, *sinkcaps = NULL;
gchar *longname, *classification, *description;
in_plugin =
(AVCodec *) g_type_get_qdata (G_OBJECT_CLASS_TYPE (klass),
GST_FFENC_PARAMS_QDATA);
g_assert (in_plugin != NULL);
/* construct the element details struct */
longname = g_strdup_printf ("FFmpeg %s encoder", in_plugin->long_name);
classification = g_strdup_printf ("Codec/Encoder/%s",
(in_plugin->type == CODEC_TYPE_VIDEO) ? "Video" : "Audio");
description = g_strdup_printf ("FFmpeg %s encoder", in_plugin->name);
gst_element_class_set_details_simple (element_class, longname, classification,
description,
"Wim Taymans <wim.taymans@gmail.com>, "
"Ronald Bultje <rbultje@ronald.bitfreak.net>");
g_free (longname);
g_free (classification);
g_free (description);
if (!(srccaps = gst_ffmpeg_codecid_to_caps (in_plugin->id, NULL, TRUE))) {
GST_DEBUG ("Couldn't get source caps for encoder '%s'", in_plugin->name);
srccaps = gst_caps_new_simple ("unknown/unknown", NULL);
}
if (in_plugin->type == CODEC_TYPE_VIDEO) {
sinkcaps = gst_caps_from_string
("video/x-raw-rgb; video/x-raw-yuv; video/x-raw-gray");
} else {
sinkcaps = gst_ffmpeg_codectype_to_audio_caps (NULL,
in_plugin->id, TRUE, in_plugin);
}
if (!sinkcaps) {
GST_DEBUG ("Couldn't get sink caps for encoder '%s'", in_plugin->name);
sinkcaps = gst_caps_new_simple ("unknown/unknown", NULL);
}
/* pad templates */
sinktempl = gst_pad_template_new ("sink", GST_PAD_SINK,
GST_PAD_ALWAYS, sinkcaps);
srctempl = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, srccaps);
gst_element_class_add_pad_template (element_class, srctempl);
gst_element_class_add_pad_template (element_class, sinktempl);
klass->in_plugin = in_plugin;
klass->srctempl = srctempl;
klass->sinktempl = sinktempl;
klass->sinkcaps = NULL;
return;
}
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_peek_parent (klass);
gobject_class->set_property = gst_ffmpegenc_set_property;
gobject_class->get_property = gst_ffmpegenc_get_property;
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, DEFAULT_VIDEO_BITRATE,
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,
DEFAULT_VIDEO_GOP_SIZE, 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_EPZS, G_PARAM_READWRITE));
/* FIXME 0.11: Make this property read-only */
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_BUFSIZE,
g_param_spec_ulong ("buffer-size", "Buffer Size",
"Size of the video buffers. "
"Note: Setting this property has no effect "
"and is deprecated!", 0, G_MAXULONG, 0, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass),
ARG_RTP_PAYLOAD_SIZE, g_param_spec_ulong ("rtp-payload-size",
"RTP Payload Size", "Target GOB length", 0, G_MAXULONG, 0,
G_PARAM_READWRITE));
/* register additional properties, possibly dependent on the exact CODEC */
gst_ffmpeg_cfg_install_property (klass, ARG_CFG_BASE);
} 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, DEFAULT_AUDIO_BITRATE,
G_PARAM_READWRITE));
}
gstelement_class->change_state = gst_ffmpegenc_change_state;
gobject_class->finalize = gst_ffmpegenc_finalize;
}
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_setcaps_function (ffmpegenc->sinkpad, gst_ffmpegenc_setcaps);
gst_pad_set_getcaps_function (ffmpegenc->sinkpad, gst_ffmpegenc_getcaps);
ffmpegenc->srcpad = gst_pad_new_from_template (oclass->srctempl, "src");
gst_pad_use_fixed_caps (ffmpegenc->srcpad);
/* ffmpeg objects */
ffmpegenc->context = avcodec_alloc_context ();
ffmpegenc->picture = avcodec_alloc_frame ();
ffmpegenc->opened = FALSE;
ffmpegenc->file = NULL;
ffmpegenc->delay = g_queue_new ();
if (oclass->in_plugin->type == CODEC_TYPE_VIDEO) {
gst_pad_set_chain_function (ffmpegenc->sinkpad, gst_ffmpegenc_chain_video);
/* so we know when to flush the buffers on EOS */
gst_pad_set_event_function (ffmpegenc->sinkpad, gst_ffmpegenc_event_video);
gst_pad_set_event_function (ffmpegenc->srcpad, gst_ffmpegenc_event_src);
ffmpegenc->bitrate = DEFAULT_VIDEO_BITRATE;
ffmpegenc->me_method = ME_EPZS;
ffmpegenc->buffer_size = 512 * 1024;
ffmpegenc->gop_size = DEFAULT_VIDEO_GOP_SIZE;
ffmpegenc->rtp_payload_size = 0;
ffmpegenc->lmin = 2;
ffmpegenc->lmax = 31;
ffmpegenc->max_key_interval = 0;
gst_ffmpeg_cfg_set_defaults (ffmpegenc);
} else if (oclass->in_plugin->type == CODEC_TYPE_AUDIO) {
gst_pad_set_chain_function (ffmpegenc->sinkpad, gst_ffmpegenc_chain_audio);
ffmpegenc->bitrate = DEFAULT_AUDIO_BITRATE;
}
gst_element_add_pad (GST_ELEMENT (ffmpegenc), ffmpegenc->sinkpad);
gst_element_add_pad (GST_ELEMENT (ffmpegenc), ffmpegenc->srcpad);
ffmpegenc->adapter = gst_adapter_new ();
}
static void
gst_ffmpegenc_finalize (GObject * object)
{
GstFFMpegEnc *ffmpegenc = (GstFFMpegEnc *) object;
gst_ffmpeg_cfg_finalize (ffmpegenc);
/* close old session */
if (ffmpegenc->opened) {
gst_ffmpeg_avcodec_close (ffmpegenc->context);
ffmpegenc->opened = FALSE;
}
/* clean up remaining allocated data */
av_free (ffmpegenc->context);
av_free (ffmpegenc->picture);
g_queue_free (ffmpegenc->delay);
g_free (ffmpegenc->filename);
g_object_unref (ffmpegenc->adapter);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static GstCaps *
gst_ffmpegenc_get_possible_sizes (GstFFMpegEnc * ffmpegenc, GstPad * pad,
const GstCaps * caps)
{
GstCaps *othercaps = NULL;
GstCaps *tmpcaps = NULL;
GstCaps *intersect = NULL;
guint i;
othercaps = gst_pad_peer_get_caps (ffmpegenc->srcpad);
if (!othercaps)
return gst_caps_copy (caps);
intersect = gst_caps_intersect (othercaps,
gst_pad_get_pad_template_caps (ffmpegenc->srcpad));
gst_caps_unref (othercaps);
if (gst_caps_is_empty (intersect))
return intersect;
if (gst_caps_is_any (intersect))
return gst_caps_copy (caps);
tmpcaps = gst_caps_new_empty ();
for (i = 0; i < gst_caps_get_size (intersect); i++) {
GstStructure *s = gst_caps_get_structure (intersect, i);
const GValue *height = NULL;
const GValue *width = NULL;
const GValue *framerate = NULL;
GstStructure *tmps;
height = gst_structure_get_value (s, "height");
width = gst_structure_get_value (s, "width");
framerate = gst_structure_get_value (s, "framerate");
tmps = gst_structure_new ("video/x-raw-rgb", NULL);
if (width)
gst_structure_set_value (tmps, "width", width);
if (height)
gst_structure_set_value (tmps, "height", height);
if (framerate)
gst_structure_set_value (tmps, "framerate", framerate);
gst_caps_merge_structure (tmpcaps, gst_structure_copy (tmps));
gst_structure_set_name (tmps, "video/x-raw-yuv");
gst_caps_merge_structure (tmpcaps, gst_structure_copy (tmps));
gst_structure_set_name (tmps, "video/x-raw-gray");
gst_caps_merge_structure (tmpcaps, tmps);
}
gst_caps_unref (intersect);
intersect = gst_caps_intersect (caps, tmpcaps);
gst_caps_unref (tmpcaps);
return intersect;
}
static GstCaps *
gst_ffmpegenc_getcaps (GstPad * pad)
{
GstFFMpegEnc *ffmpegenc = (GstFFMpegEnc *) GST_PAD_PARENT (pad);
GstFFMpegEncClass *oclass =
(GstFFMpegEncClass *) G_OBJECT_GET_CLASS (ffmpegenc);
AVCodecContext *ctx = NULL;
enum PixelFormat pixfmt;
GstCaps *caps = NULL;
GstCaps *finalcaps = NULL;
gint i;
GST_DEBUG_OBJECT (ffmpegenc, "getting caps");
/* audio needs no special care */
if (oclass->in_plugin->type == CODEC_TYPE_AUDIO) {
caps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
GST_DEBUG_OBJECT (ffmpegenc, "audio caps, return template %" GST_PTR_FORMAT,
caps);
return caps;
}
/* cached */
if (oclass->sinkcaps) {
caps = gst_ffmpegenc_get_possible_sizes (ffmpegenc, pad, oclass->sinkcaps);
GST_DEBUG_OBJECT (ffmpegenc, "return cached caps %" GST_PTR_FORMAT, caps);
return caps;
}
/* create cache etc. */
/* shut up the logging while we autoprobe; we don't want warnings and
* errors about unsupported formats */
/* FIXME: if someone cares about this disabling the logging for other
* instances/threads/..., one could investigate if there is a way to
* set this as a struct member on the av context, and check it from the
* log handler */
#ifndef GST_DISABLE_GST_DEBUG
_shut_up_I_am_probing = TRUE;
#endif
GST_DEBUG_OBJECT (ffmpegenc, "probing caps");
i = pixfmt = 0;
/* check pixfmt until deemed finished */
for (pixfmt = 0;; pixfmt++) {
GstCaps *tmpcaps;
/* override looping all pixfmt if codec declares pixfmts;
* these may not properly check and report supported pixfmt during _init */
if (oclass->in_plugin->pix_fmts) {
if ((pixfmt = oclass->in_plugin->pix_fmts[i++]) == PIX_FMT_NONE) {
GST_DEBUG_OBJECT (ffmpegenc,
"At the end of official pixfmt for this codec, breaking out");
break;
}
GST_DEBUG_OBJECT (ffmpegenc,
"Got an official pixfmt [%d], attempting to get caps", pixfmt);
tmpcaps = gst_ffmpeg_pixfmt_to_caps (pixfmt, NULL, oclass->in_plugin->id);
if (tmpcaps) {
GST_DEBUG_OBJECT (ffmpegenc, "Got caps, breaking out");
if (!caps)
caps = gst_caps_new_empty ();
gst_caps_append (caps, tmpcaps);
continue;
}
GST_DEBUG_OBJECT (ffmpegenc,
"Couldn't figure out caps without context, trying again with a context");
}
GST_DEBUG_OBJECT (ffmpegenc, "pixfmt :%d", pixfmt);
if (pixfmt >= PIX_FMT_NB) {
GST_WARNING ("Invalid pixfmt, breaking out");
break;
}
/* need to start with a fresh codec_context each time around, since
* codec_close may have released stuff causing the next pass to segfault */
ctx = avcodec_alloc_context ();
if (!ctx) {
GST_DEBUG_OBJECT (ffmpegenc, "no context");
break;
}
/* set some default properties */
ctx->width = DEFAULT_WIDTH;
ctx->height = DEFAULT_HEIGHT;
ctx->time_base.num = 1;
ctx->time_base.den = 25;
ctx->ticks_per_frame = 1;
ctx->bit_rate = DEFAULT_VIDEO_BITRATE;
/* makes it silent */
ctx->strict_std_compliance = -1;
ctx->pix_fmt = pixfmt;
GST_DEBUG ("Attempting to open codec");
if (gst_ffmpeg_avcodec_open (ctx, oclass->in_plugin) >= 0 &&
ctx->pix_fmt == pixfmt) {
ctx->width = -1;
if (!caps)
caps = gst_caps_new_empty ();
tmpcaps = gst_ffmpeg_codectype_to_caps (oclass->in_plugin->type, ctx,
oclass->in_plugin->id, TRUE);
if (tmpcaps)
gst_caps_append (caps, tmpcaps);
else
GST_LOG_OBJECT (ffmpegenc,
"Couldn't get caps for oclass->in_plugin->name:%s",
oclass->in_plugin->name);
gst_ffmpeg_avcodec_close (ctx);
} else {
GST_DEBUG_OBJECT (ffmpegenc, "Opening codec failed with pixfmt : %d",
pixfmt);
}
if (ctx->priv_data)
gst_ffmpeg_avcodec_close (ctx);
av_free (ctx);
}
#ifndef GST_DISABLE_GST_DEBUG
_shut_up_I_am_probing = FALSE;
#endif
/* make sure we have something */
if (!caps) {
caps = gst_ffmpegenc_get_possible_sizes (ffmpegenc, pad,
gst_pad_get_pad_template_caps (pad));
GST_DEBUG_OBJECT (ffmpegenc, "probing gave nothing, "
"return template %" GST_PTR_FORMAT, caps);
return caps;
}
GST_DEBUG_OBJECT (ffmpegenc, "probed caps gave %" GST_PTR_FORMAT, caps);
oclass->sinkcaps = gst_caps_copy (caps);
finalcaps = gst_ffmpegenc_get_possible_sizes (ffmpegenc, pad, caps);
gst_caps_unref (caps);
return finalcaps;
}
static gboolean
gst_ffmpegenc_setcaps (GstPad * pad, GstCaps * caps)
{
GstCaps *other_caps;
GstCaps *allowed_caps;
GstCaps *icaps;
enum PixelFormat pix_fmt;
GstFFMpegEnc *ffmpegenc = (GstFFMpegEnc *) GST_PAD_PARENT (pad);
GstFFMpegEncClass *oclass =
(GstFFMpegEncClass *) G_OBJECT_GET_CLASS (ffmpegenc);
/* close old session */
if (ffmpegenc->opened) {
gst_ffmpeg_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;
GST_DEBUG_OBJECT (ffmpegenc, "Setting avcontext to bitrate %lu, gop_size %d",
ffmpegenc->bitrate, ffmpegenc->gop_size);
/* RTP payload used for GOB production (for Asterisk) */
if (ffmpegenc->rtp_payload_size) {
ffmpegenc->context->rtp_payload_size = ffmpegenc->rtp_payload_size;
}
/* additional avcodec settings */
/* first fill in the majority by copying over */
gst_ffmpeg_cfg_fill_context (ffmpegenc, ffmpegenc->context);
/* then handle some special cases */
ffmpegenc->context->lmin = (ffmpegenc->lmin * FF_QP2LAMBDA + 0.5);
ffmpegenc->context->lmax = (ffmpegenc->lmax * FF_QP2LAMBDA + 0.5);
if (ffmpegenc->interlaced) {
ffmpegenc->context->flags |=
CODEC_FLAG_INTERLACED_DCT | CODEC_FLAG_INTERLACED_ME;
ffmpegenc->picture->interlaced_frame = TRUE;
/* if this is not the case, a filter element should be used to swap fields */
ffmpegenc->picture->top_field_first = TRUE;
}
/* some other defaults */
ffmpegenc->context->rc_strategy = 2;
ffmpegenc->context->b_frame_strategy = 0;
ffmpegenc->context->coder_type = 0;
ffmpegenc->context->context_model = 0;
ffmpegenc->context->scenechange_threshold = 0;
ffmpegenc->context->inter_threshold = 0;
/* and last but not least the pass; CBR, 2-pass, etc */
ffmpegenc->context->flags |= ffmpegenc->pass;
switch (ffmpegenc->pass) {
/* some additional action depends on type of pass */
case CODEC_FLAG_QSCALE:
ffmpegenc->context->global_quality
= ffmpegenc->picture->quality = FF_QP2LAMBDA * ffmpegenc->quantizer;
break;
case CODEC_FLAG_PASS1: /* need to prepare a stats file */
/* we don't close when changing caps, fingers crossed */
if (!ffmpegenc->file)
ffmpegenc->file = g_fopen (ffmpegenc->filename, "w");
if (!ffmpegenc->file) {
GST_ELEMENT_ERROR (ffmpegenc, RESOURCE, OPEN_WRITE,
(("Could not open file \"%s\" for writing."), ffmpegenc->filename),
GST_ERROR_SYSTEM);
return FALSE;
}
break;
case CODEC_FLAG_PASS2:
{ /* need to read the whole stats file ! */
gsize size;
if (!g_file_get_contents (ffmpegenc->filename,
&ffmpegenc->context->stats_in, &size, NULL)) {
GST_ELEMENT_ERROR (ffmpegenc, RESOURCE, READ,
(("Could not get contents of file \"%s\"."), ffmpegenc->filename),
GST_ERROR_SYSTEM);
return FALSE;
}
break;
}
default:
break;
}
/* fetch pix_fmt and so on */
gst_ffmpeg_caps_with_codectype (oclass->in_plugin->type,
caps, ffmpegenc->context);
if (!ffmpegenc->context->time_base.den) {
ffmpegenc->context->time_base.den = 25;
ffmpegenc->context->time_base.num = 1;
ffmpegenc->context->ticks_per_frame = 1;
} else if ((oclass->in_plugin->id == CODEC_ID_MPEG4)
&& (ffmpegenc->context->time_base.den > 65535)) {
/* MPEG4 Standards do not support time_base denominator greater than
* (1<<16) - 1 . We therefore scale them down.
* Agreed, it will not be the exact framerate... but the difference
* shouldn't be that noticeable */
ffmpegenc->context->time_base.num =
(gint) gst_util_uint64_scale_int (ffmpegenc->context->time_base.num,
65535, ffmpegenc->context->time_base.den);
ffmpegenc->context->time_base.den = 65535;
GST_LOG_OBJECT (ffmpegenc, "MPEG4 : scaled down framerate to %d / %d",
ffmpegenc->context->time_base.den, ffmpegenc->context->time_base.num);
}
pix_fmt = ffmpegenc->context->pix_fmt;
/* max-key-interval may need the framerate set above */
if (ffmpegenc->max_key_interval) {
AVCodecContext *ctx;
/* override gop-size */
ctx = ffmpegenc->context;
ctx->gop_size = (ffmpegenc->max_key_interval < 0) ?
(-ffmpegenc->max_key_interval
* (ctx->time_base.den * ctx->ticks_per_frame / ctx->time_base.num))
: ffmpegenc->max_key_interval;
}
/* open codec */
if (gst_ffmpeg_avcodec_open (ffmpegenc->context, oclass->in_plugin) < 0) {
if (ffmpegenc->context->priv_data)
gst_ffmpeg_avcodec_close (ffmpegenc->context);
if (ffmpegenc->context->stats_in)
g_free (ffmpegenc->context->stats_in);
GST_DEBUG_OBJECT (ffmpegenc, "ffenc_%s: Failed to open FFMPEG codec",
oclass->in_plugin->name);
return FALSE;
}
/* second pass stats buffer no longer needed */
if (ffmpegenc->context->stats_in)
g_free (ffmpegenc->context->stats_in);
/* is the colourspace correct? */
if (pix_fmt != ffmpegenc->context->pix_fmt) {
gst_ffmpeg_avcodec_close (ffmpegenc->context);
GST_DEBUG_OBJECT (ffmpegenc,
"ffenc_%s: AV wants different colourspace (%d given, %d wanted)",
oclass->in_plugin->name, pix_fmt, ffmpegenc->context->pix_fmt);
return FALSE;
}
/* we may have failed mapping caps to a pixfmt,
* and quite some codecs do not make up their own mind about that
* in any case, _NONE can never work out later on */
if (oclass->in_plugin->type == CODEC_TYPE_VIDEO && pix_fmt == PIX_FMT_NONE) {
GST_DEBUG_OBJECT (ffmpegenc, "ffenc_%s: Failed to determine input format",
oclass->in_plugin->name);
return FALSE;
}
/* some codecs support more than one format, first auto-choose one */
GST_DEBUG_OBJECT (ffmpegenc, "picking an output format ...");
allowed_caps = gst_pad_get_allowed_caps (ffmpegenc->srcpad);
if (!allowed_caps) {
GST_DEBUG_OBJECT (ffmpegenc, "... but no peer, using template caps");
/* we need to copy because get_allowed_caps returns a ref, and
* get_pad_template_caps doesn't */
allowed_caps =
gst_caps_copy (gst_pad_get_pad_template_caps (ffmpegenc->srcpad));
}
GST_DEBUG_OBJECT (ffmpegenc, "chose caps %" GST_PTR_FORMAT, allowed_caps);
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) {
gst_ffmpeg_avcodec_close (ffmpegenc->context);
GST_DEBUG ("Unsupported codec - no caps found");
return FALSE;
}
icaps = gst_caps_intersect (allowed_caps, other_caps);
gst_caps_unref (allowed_caps);
gst_caps_unref (other_caps);
if (gst_caps_is_empty (icaps)) {
gst_caps_unref (icaps);
return FALSE;
}
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_unref (icaps);
icaps = newcaps;
}
if (!gst_pad_set_caps (ffmpegenc->srcpad, icaps)) {
gst_ffmpeg_avcodec_close (ffmpegenc->context);
gst_caps_unref (icaps);
return FALSE;
}
gst_caps_unref (icaps);
/* success! */
ffmpegenc->opened = TRUE;
return TRUE;
}
static void
ffmpegenc_setup_working_buf (GstFFMpegEnc * ffmpegenc)
{
guint wanted_size =
ffmpegenc->context->width * ffmpegenc->context->height * 6 +
FF_MIN_BUFFER_SIZE;
/* Above is the buffer size used by ffmpeg/ffmpeg.c */
if (ffmpegenc->working_buf == NULL ||
ffmpegenc->working_buf_size != wanted_size) {
if (ffmpegenc->working_buf)
g_free (ffmpegenc->working_buf);
ffmpegenc->working_buf_size = wanted_size;
ffmpegenc->working_buf = g_malloc (ffmpegenc->working_buf_size);
}
ffmpegenc->buffer_size = wanted_size;
}
static GstFlowReturn
gst_ffmpegenc_chain_video (GstPad * pad, GstBuffer * inbuf)
{
GstFFMpegEnc *ffmpegenc = (GstFFMpegEnc *) (GST_PAD_PARENT (pad));
GstBuffer *outbuf;
gint ret_size = 0, frame_size;
gboolean force_keyframe;
GST_DEBUG_OBJECT (ffmpegenc,
"Received buffer of time %" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (inbuf)));
GST_OBJECT_LOCK (ffmpegenc);
force_keyframe = ffmpegenc->force_keyframe;
ffmpegenc->force_keyframe = FALSE;
GST_OBJECT_UNLOCK (ffmpegenc);
if (force_keyframe)
ffmpegenc->picture->pict_type = FF_I_TYPE;
frame_size = gst_ffmpeg_avpicture_fill ((AVPicture *) ffmpegenc->picture,
GST_BUFFER_DATA (inbuf),
ffmpegenc->context->pix_fmt,
ffmpegenc->context->width, ffmpegenc->context->height);
g_return_val_if_fail (frame_size == GST_BUFFER_SIZE (inbuf), GST_FLOW_ERROR);
ffmpegenc->picture->pts =
gst_ffmpeg_time_gst_to_ff (GST_BUFFER_TIMESTAMP (inbuf) /
ffmpegenc->context->ticks_per_frame, ffmpegenc->context->time_base);
ffmpegenc_setup_working_buf (ffmpegenc);
ret_size = avcodec_encode_video (ffmpegenc->context,
ffmpegenc->working_buf, ffmpegenc->working_buf_size, ffmpegenc->picture);
if (ret_size < 0) {
#ifndef GST_DISABLE_GST_DEBUG
GstFFMpegEncClass *oclass =
(GstFFMpegEncClass *) (G_OBJECT_GET_CLASS (ffmpegenc));
GST_ERROR_OBJECT (ffmpegenc,
"ffenc_%s: failed to encode buffer", oclass->in_plugin->name);
#endif /* GST_DISABLE_GST_DEBUG */
gst_buffer_unref (inbuf);
return GST_FLOW_OK;
}
/* handle b-frame delay when no output, so we don't output empty frames;
* timestamps and so can permute a bit between coding and display order
* but keyframes should still end up with the proper metadata */
g_queue_push_tail (ffmpegenc->delay, inbuf);
if (ret_size)
inbuf = g_queue_pop_head (ffmpegenc->delay);
else
return GST_FLOW_OK;
/* save stats info if there is some as well as a stats file */
if (ffmpegenc->file && ffmpegenc->context->stats_out)
if (fprintf (ffmpegenc->file, "%s", ffmpegenc->context->stats_out) < 0)
GST_ELEMENT_ERROR (ffmpegenc, RESOURCE, WRITE,
(("Could not write to file \"%s\"."), ffmpegenc->filename),
GST_ERROR_SYSTEM);
outbuf = gst_buffer_new_and_alloc (ret_size);
memcpy (GST_BUFFER_DATA (outbuf), ffmpegenc->working_buf, ret_size);
GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (inbuf);
GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (inbuf);
/* buggy codec may not set coded_frame */
if (ffmpegenc->context->coded_frame) {
if (!ffmpegenc->context->coded_frame->key_frame)
GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DELTA_UNIT);
} else
GST_WARNING_OBJECT (ffmpegenc, "codec did not provide keyframe info");
gst_buffer_set_caps (outbuf, GST_PAD_CAPS (ffmpegenc->srcpad));
gst_buffer_unref (inbuf);
/* Reset frame type */
if (ffmpegenc->picture->pict_type)
ffmpegenc->picture->pict_type = 0;
if (force_keyframe) {
gst_pad_push_event (ffmpegenc->srcpad,
gst_event_new_custom (GST_EVENT_CUSTOM_DOWNSTREAM,
gst_structure_new ("GstForceKeyUnit",
"timestamp", G_TYPE_UINT64, GST_BUFFER_TIMESTAMP (outbuf),
NULL)));
}
return gst_pad_push (ffmpegenc->srcpad, outbuf);
}
static GstFlowReturn
gst_ffmpegenc_encode_audio (GstFFMpegEnc * ffmpegenc, guint8 * audio_in,
guint in_size, guint max_size, GstClockTime timestamp,
GstClockTime duration, gboolean discont)
{
GstBuffer *outbuf;
AVCodecContext *ctx;
guint8 *audio_out;
gint res;
GstFlowReturn ret;
ctx = ffmpegenc->context;
/* We need to provide at least ffmpegs minimal buffer size */
outbuf = gst_buffer_new_and_alloc (max_size + FF_MIN_BUFFER_SIZE);
audio_out = GST_BUFFER_DATA (outbuf);
GST_LOG_OBJECT (ffmpegenc, "encoding buffer of max size %d", max_size);
if (ffmpegenc->buffer_size != max_size)
ffmpegenc->buffer_size = max_size;
res = avcodec_encode_audio (ctx, audio_out, in_size, (short *) audio_in);
if (res < 0) {
GST_ERROR_OBJECT (ffmpegenc, "Failed to encode buffer: %d", res);
gst_buffer_unref (outbuf);
return GST_FLOW_OK;
}
GST_LOG_OBJECT (ffmpegenc, "got output size %d", res);
GST_BUFFER_SIZE (outbuf) = res;
GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
GST_BUFFER_DURATION (outbuf) = duration;
if (discont)
GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
gst_buffer_set_caps (outbuf, GST_PAD_CAPS (ffmpegenc->srcpad));
GST_LOG_OBJECT (ffmpegenc, "pushing size %d, timestamp %" GST_TIME_FORMAT,
res, GST_TIME_ARGS (timestamp));
ret = gst_pad_push (ffmpegenc->srcpad, outbuf);
return ret;
}
static GstFlowReturn
gst_ffmpegenc_chain_audio (GstPad * pad, GstBuffer * inbuf)
{
GstFFMpegEnc *ffmpegenc;
GstFFMpegEncClass *oclass;
AVCodecContext *ctx;
GstClockTime timestamp, duration;
guint size, frame_size;
gint osize;
GstFlowReturn ret;
gint out_size;
gboolean discont;
guint8 *in_data;
ffmpegenc = (GstFFMpegEnc *) (GST_OBJECT_PARENT (pad));
oclass = (GstFFMpegEncClass *) G_OBJECT_GET_CLASS (ffmpegenc);
ctx = ffmpegenc->context;
size = GST_BUFFER_SIZE (inbuf);
timestamp = GST_BUFFER_TIMESTAMP (inbuf);
duration = GST_BUFFER_DURATION (inbuf);
discont = GST_BUFFER_IS_DISCONT (inbuf);
GST_DEBUG_OBJECT (ffmpegenc,
"Received time %" GST_TIME_FORMAT ", duration %" GST_TIME_FORMAT
", size %d", GST_TIME_ARGS (timestamp), GST_TIME_ARGS (duration), size);
frame_size = ctx->frame_size;
osize = av_get_bits_per_sample_format (ctx->sample_fmt) / 8;
if (frame_size > 1) {
/* we have a frame_size, feed the encoder multiples of this frame size */
guint avail, frame_bytes;
if (discont) {
GST_LOG_OBJECT (ffmpegenc, "DISCONT, clear adapter");
gst_adapter_clear (ffmpegenc->adapter);
ffmpegenc->discont = TRUE;
}
if (gst_adapter_available (ffmpegenc->adapter) == 0) {
/* lock on to new timestamp */
GST_LOG_OBJECT (ffmpegenc, "taking buffer timestamp %" GST_TIME_FORMAT,
GST_TIME_ARGS (timestamp));
ffmpegenc->adapter_ts = timestamp;
ffmpegenc->adapter_consumed = 0;
} else {
GstClockTime upstream_time;
GstClockTime consumed_time;
guint64 bytes;
/* use timestamp at head of the adapter */
consumed_time =
gst_util_uint64_scale (ffmpegenc->adapter_consumed, GST_SECOND,
ctx->sample_rate);
timestamp = ffmpegenc->adapter_ts + consumed_time;
GST_LOG_OBJECT (ffmpegenc, "taking adapter timestamp %" GST_TIME_FORMAT
" and adding consumed time %" GST_TIME_FORMAT,
GST_TIME_ARGS (ffmpegenc->adapter_ts), GST_TIME_ARGS (consumed_time));
/* check with upstream timestamps, if too much deviation,
* forego some timestamp perfection in favour of upstream syncing
* (particularly in case these do not happen to come in multiple
* of frame size) */
upstream_time = gst_adapter_prev_timestamp (ffmpegenc->adapter, &bytes);
if (GST_CLOCK_TIME_IS_VALID (upstream_time)) {
GstClockTimeDiff diff;
upstream_time +=
gst_util_uint64_scale (bytes, GST_SECOND,
ctx->sample_rate * osize * ctx->channels);
diff = upstream_time - timestamp;
/* relaxed difference, rather than half a sample or so ... */
if (diff > GST_SECOND / 10 || diff < -GST_SECOND / 10) {
GST_DEBUG_OBJECT (ffmpegenc, "adapter timestamp drifting, "
"taking upstream timestamp %" GST_TIME_FORMAT,
GST_TIME_ARGS (upstream_time));
timestamp = upstream_time;
/* samples corresponding to bytes */
ffmpegenc->adapter_consumed = bytes / (osize * ctx->channels);
ffmpegenc->adapter_ts = upstream_time -
gst_util_uint64_scale (ffmpegenc->adapter_consumed, GST_SECOND,
ctx->sample_rate);
ffmpegenc->discont = TRUE;
}
}
}
GST_LOG_OBJECT (ffmpegenc, "pushing buffer in adapter");
gst_adapter_push (ffmpegenc->adapter, inbuf);
/* first see how many bytes we need to feed to the decoder. */
frame_bytes = frame_size * osize * ctx->channels;
avail = gst_adapter_available (ffmpegenc->adapter);
GST_LOG_OBJECT (ffmpegenc, "frame_bytes %u, avail %u", frame_bytes, avail);
/* while there is more than a frame size in the adapter, consume it */
while (avail >= frame_bytes) {
GST_LOG_OBJECT (ffmpegenc, "taking %u bytes from the adapter",
frame_bytes);
/* Note that we take frame_bytes and add frame_size.
* Makes sense when resyncing because you don't have to count channels
* or samplesize to divide by the samplerate */
/* take an audio buffer out of the adapter */
in_data = (guint8 *) gst_adapter_peek (ffmpegenc->adapter, frame_bytes);
ffmpegenc->adapter_consumed += frame_size;
/* calculate timestamp and duration relative to start of adapter and to
* the amount of samples we consumed */
duration =
gst_util_uint64_scale (ffmpegenc->adapter_consumed, GST_SECOND,
ctx->sample_rate);
duration -= (timestamp - ffmpegenc->adapter_ts);
/* 4 times the input size should be big enough... */
out_size = frame_bytes * 4;
ret =
gst_ffmpegenc_encode_audio (ffmpegenc, in_data, frame_bytes, out_size,
timestamp, duration, ffmpegenc->discont);
gst_adapter_flush (ffmpegenc->adapter, frame_bytes);
if (ret != GST_FLOW_OK)
goto push_failed;
/* advance the adapter timestamp with the duration */
timestamp += duration;
ffmpegenc->discont = FALSE;
avail = gst_adapter_available (ffmpegenc->adapter);
}
GST_LOG_OBJECT (ffmpegenc, "%u bytes left in the adapter", avail);
} else {
/* we have no frame_size, feed the encoder all the data and expect a fixed
* output size */
int coded_bps = av_get_bits_per_sample (oclass->in_plugin->id);
GST_LOG_OBJECT (ffmpegenc, "coded bps %d, osize %d", coded_bps, osize);
out_size = size / osize;
if (coded_bps)
out_size = (out_size * coded_bps) / 8;
in_data = (guint8 *) GST_BUFFER_DATA (inbuf);
ret = gst_ffmpegenc_encode_audio (ffmpegenc, in_data, size, out_size,
timestamp, duration, discont);
gst_buffer_unref (inbuf);
if (ret != GST_FLOW_OK)
goto push_failed;
}
return GST_FLOW_OK;
/* ERRORS */
push_failed:
{
GST_DEBUG_OBJECT (ffmpegenc, "Failed to push buffer %d (%s)", ret,
gst_flow_get_name (ret));
return ret;
}
}
static void
gst_ffmpegenc_flush_buffers (GstFFMpegEnc * ffmpegenc, gboolean send)
{
GstBuffer *outbuf, *inbuf;
gint ret_size;
GST_DEBUG_OBJECT (ffmpegenc, "flushing buffers with sending %d", send);
/* no need to empty codec if there is none */
if (!ffmpegenc->opened)
goto flush;
while (!g_queue_is_empty (ffmpegenc->delay)) {
ffmpegenc_setup_working_buf (ffmpegenc);
ret_size = avcodec_encode_video (ffmpegenc->context,
ffmpegenc->working_buf, ffmpegenc->working_buf_size, NULL);
if (ret_size < 0) { /* there should be something, notify and give up */
#ifndef GST_DISABLE_GST_DEBUG
GstFFMpegEncClass *oclass =
(GstFFMpegEncClass *) (G_OBJECT_GET_CLASS (ffmpegenc));
GST_WARNING_OBJECT (ffmpegenc,
"ffenc_%s: failed to flush buffer", oclass->in_plugin->name);
#endif /* GST_DISABLE_GST_DEBUG */
break;
}
/* save stats info if there is some as well as a stats file */
if (ffmpegenc->file && ffmpegenc->context->stats_out)
if (fprintf (ffmpegenc->file, "%s", ffmpegenc->context->stats_out) < 0)
GST_ELEMENT_ERROR (ffmpegenc, RESOURCE, WRITE,
(("Could not write to file \"%s\"."), ffmpegenc->filename),
GST_ERROR_SYSTEM);
/* handle b-frame delay when no output, so we don't output empty frames */
inbuf = g_queue_pop_head (ffmpegenc->delay);
outbuf = gst_buffer_new_and_alloc (ret_size);
memcpy (GST_BUFFER_DATA (outbuf), ffmpegenc->working_buf, ret_size);
GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (inbuf);
GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (inbuf);
if (!ffmpegenc->context->coded_frame->key_frame)
GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DELTA_UNIT);
gst_buffer_set_caps (outbuf, GST_PAD_CAPS (ffmpegenc->srcpad));
gst_buffer_unref (inbuf);
if (send)
gst_pad_push (ffmpegenc->srcpad, outbuf);
else
gst_buffer_unref (outbuf);
}
flush:
{
/* make sure that we empty the queue, is still needed if we had to break */
while (!g_queue_is_empty (ffmpegenc->delay))
gst_buffer_unref (g_queue_pop_head (ffmpegenc->delay));
}
}
static gboolean
gst_ffmpegenc_event_video (GstPad * pad, GstEvent * event)
{
GstFFMpegEnc *ffmpegenc = (GstFFMpegEnc *) (GST_PAD_PARENT (pad));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:
gst_ffmpegenc_flush_buffers (ffmpegenc, TRUE);
break;
/* no flushing if flush received,
* buffers in encoder are considered (in the) past */
case GST_EVENT_CUSTOM_DOWNSTREAM:{
const GstStructure *s;
s = gst_event_get_structure (event);
if (gst_structure_has_name (s, "GstForceKeyUnit")) {
ffmpegenc->picture->pict_type = FF_I_TYPE;
}
break;
}
default:
break;
}
return gst_pad_push_event (ffmpegenc->srcpad, event);
}
static gboolean
gst_ffmpegenc_event_src (GstPad * pad, GstEvent * event)
{
GstFFMpegEnc *ffmpegenc = (GstFFMpegEnc *) (GST_PAD_PARENT (pad));
gboolean forward = TRUE;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_CUSTOM_UPSTREAM:{
const GstStructure *s;
s = gst_event_get_structure (event);
if (gst_structure_has_name (s, "GstForceKeyUnit")) {
GST_OBJECT_LOCK (ffmpegenc);
ffmpegenc->force_keyframe = TRUE;
GST_OBJECT_UNLOCK (ffmpegenc);
forward = FALSE;
gst_event_unref (event);
}
break;
}
default:
break;
}
if (forward)
return gst_pad_push_event (ffmpegenc->sinkpad, event);
else
return TRUE;
}
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);
if (ffmpegenc->opened) {
GST_WARNING_OBJECT (ffmpegenc,
"Can't change properties once decoder is setup !");
return;
}
/* 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:
break;
case ARG_RTP_PAYLOAD_SIZE:
ffmpegenc->rtp_payload_size = g_value_get_ulong (value);
break;
default:
if (!gst_ffmpeg_cfg_set_property (object, value, pspec))
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;
case ARG_RTP_PAYLOAD_SIZE:
g_value_set_ulong (value, ffmpegenc->rtp_payload_size);
break;
default:
if (!gst_ffmpeg_cfg_get_property (object, value, pspec))
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstStateChangeReturn
gst_ffmpegenc_change_state (GstElement * element, GstStateChange transition)
{
GstFFMpegEnc *ffmpegenc = (GstFFMpegEnc *) element;
GstStateChangeReturn result;
switch (transition) {
default:
break;
}
result = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_ffmpegenc_flush_buffers (ffmpegenc, FALSE);
if (ffmpegenc->opened) {
gst_ffmpeg_avcodec_close (ffmpegenc->context);
ffmpegenc->opened = FALSE;
}
gst_adapter_clear (ffmpegenc->adapter);
if (ffmpegenc->file) {
fclose (ffmpegenc->file);
ffmpegenc->file = NULL;
}
if (ffmpegenc->working_buf) {
g_free (ffmpegenc->working_buf);
ffmpegenc->working_buf = NULL;
}
break;
default:
break;
}
return result;
}
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;
GST_LOG ("Registering encoders");
/* build global ffmpeg param/property info */
gst_ffmpeg_cfg_init ();
in_plugin = av_codec_next (NULL);
while (in_plugin) {
gchar *type_name;
/* no quasi codecs, please */
if (in_plugin->id == CODEC_ID_RAWVIDEO ||
in_plugin->id == CODEC_ID_V210 ||
in_plugin->id == CODEC_ID_V210X ||
in_plugin->id == CODEC_ID_R210 ||
in_plugin->id == CODEC_ID_ZLIB ||
(in_plugin->id >= CODEC_ID_PCM_S16LE &&
in_plugin->id <= CODEC_ID_PCM_BLURAY)) {
goto next;
}
/* No encoders depending on external libraries (we don't build them, but
* people who build against an external ffmpeg might have them.
* We have native gstreamer plugins for all of those libraries anyway. */
if (!strncmp (in_plugin->name, "lib", 3)) {
GST_DEBUG
("Not using external library encoder %s. Use the gstreamer-native ones instead.",
in_plugin->name);
goto next;
}
/* only encoders */
if (!in_plugin->encode) {
goto next;
}
/* FIXME : We should have a method to know cheaply whether we have a mapping
* for the given plugin or not */
GST_DEBUG ("Trying plugin %s [%s]", in_plugin->name, in_plugin->long_name);
/* no codecs for which we're GUARANTEED to have better alternatives */
if (!strcmp (in_plugin->name, "vorbis") ||
!strcmp (in_plugin->name, "gif") || !strcmp (in_plugin->name, "flac")) {
GST_LOG ("Ignoring encoder %s", in_plugin->name);
goto next;
}
/* construct the type */
type_name = g_strdup_printf ("ffenc_%s", in_plugin->name);
type = g_type_from_name (type_name);
if (!type) {
/* create the glib type now */
type = g_type_register_static (GST_TYPE_ELEMENT, type_name, &typeinfo, 0);
g_type_set_qdata (type, GST_FFENC_PARAMS_QDATA, (gpointer) in_plugin);
{
static const GInterfaceInfo preset_info = {
NULL,
NULL,
NULL
};
g_type_add_interface_static (type, GST_TYPE_PRESET, &preset_info);
}
}
if (!gst_element_register (plugin, type_name, GST_RANK_SECONDARY, type)) {
g_free (type_name);
return FALSE;
}
g_free (type_name);
next:
in_plugin = av_codec_next (in_plugin);
}
GST_LOG ("Finished registering encoders");
return TRUE;
}
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