Re #1446 (misc): Modified ffmpeg_codecs to ffmpeg_vid_codecs

git-svn-id: http://svn.pjsip.org/repos/pjproject/trunk@4049 74dad513-b988-da41-8d7b-12977e46ad98

1 files changed, 0 insertions, 1777 deletions

diff --git a/pjmedia/src/pjmedia-codec/ffmpeg_codecs.c b/pjmedia/src/pjmedia-codec/ffmpeg_codecs.c
deleted file mode 100644
index 4200369a..00000000
--- a/pjmedia/src/pjmedia-codec/ffmpeg_codecs.c
+++ /dev/null
@@ -1,1777 +0,0 @@
-/* $Id$ */
-/* 
- * Copyright (C) 2010-2011 Teluu Inc. (http://www.teluu.com)
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
- */
-#include <pjmedia-codec/ffmpeg_codecs.h>
-#include <pjmedia-codec/h263_packetizer.h>
-#include <pjmedia-codec/h264_packetizer.h>
-#include <pjmedia/errno.h>
-#include <pjmedia/vid_codec_util.h>
-#include <pj/assert.h>
-#include <pj/list.h>
-#include <pj/log.h>
-#include <pj/math.h>
-#include <pj/pool.h>
-#include <pj/string.h>
-#include <pj/os.h>
-
-
-/*
- * Only build this file if PJMEDIA_HAS_FFMPEG_CODEC != 0 and 
- * PJMEDIA_HAS_VIDEO != 0
- */
-#if defined(PJMEDIA_HAS_FFMPEG_CODEC) && PJMEDIA_HAS_FFMPEG_CODEC != 0 && \
-    defined(PJMEDIA_HAS_VIDEO) && (PJMEDIA_HAS_VIDEO != 0)
-
-#define THIS_FILE   "ffmpeg_codecs.c"
-
-#define LIBAVCODEC_VER_AT_LEAST(major,minor)  (LIBAVCODEC_VERSION_MAJOR > major || \
-     					       (LIBAVCODEC_VERSION_MAJOR == major && \
-					        LIBAVCODEC_VERSION_MINOR >= minor))
-
-#include "../pjmedia/ffmpeg_util.h"
-#include <libavcodec/avcodec.h>
-#include <libavformat/avformat.h>
-#if LIBAVCODEC_VER_AT_LEAST(53,20)
-  /* Needed by 264 so far, on libavcodec 53.20 */
-# include <libavutil/opt.h>
-#endif
-
-
-/* Prototypes for FFMPEG codecs factory */
-static pj_status_t ffmpeg_test_alloc( pjmedia_vid_codec_factory *factory, 
-				      const pjmedia_vid_codec_info *id );
-static pj_status_t ffmpeg_default_attr( pjmedia_vid_codec_factory *factory, 
-				        const pjmedia_vid_codec_info *info, 
-				        pjmedia_vid_codec_param *attr );
-static pj_status_t ffmpeg_enum_codecs( pjmedia_vid_codec_factory *factory, 
-				       unsigned *count, 
-				       pjmedia_vid_codec_info codecs[]);
-static pj_status_t ffmpeg_alloc_codec( pjmedia_vid_codec_factory *factory, 
-				       const pjmedia_vid_codec_info *info, 
-				       pjmedia_vid_codec **p_codec);
-static pj_status_t ffmpeg_dealloc_codec( pjmedia_vid_codec_factory *factory, 
-				         pjmedia_vid_codec *codec );
-
-/* Prototypes for FFMPEG codecs implementation. */
-static pj_status_t  ffmpeg_codec_init( pjmedia_vid_codec *codec, 
-				       pj_pool_t *pool );
-static pj_status_t  ffmpeg_codec_open( pjmedia_vid_codec *codec, 
-				       pjmedia_vid_codec_param *attr );
-static pj_status_t  ffmpeg_codec_close( pjmedia_vid_codec *codec );
-static pj_status_t  ffmpeg_codec_modify(pjmedia_vid_codec *codec, 
-				        const pjmedia_vid_codec_param *attr );
-static pj_status_t  ffmpeg_codec_get_param(pjmedia_vid_codec *codec,
-					   pjmedia_vid_codec_param *param);
-static pj_status_t ffmpeg_codec_encode_begin(pjmedia_vid_codec *codec,
-					     const pjmedia_vid_encode_opt *opt,
-                                             const pjmedia_frame *input,
-					     unsigned out_size,
-					     pjmedia_frame *output,
-					     pj_bool_t *has_more);
-static pj_status_t ffmpeg_codec_encode_more(pjmedia_vid_codec *codec,
-					    unsigned out_size,
-					    pjmedia_frame *output,
-					    pj_bool_t *has_more);
-static pj_status_t ffmpeg_codec_decode( pjmedia_vid_codec *codec,
-					pj_size_t pkt_count,
-					pjmedia_frame packets[],
-					unsigned out_size,
-					pjmedia_frame *output);
-
-/* Definition for FFMPEG codecs operations. */
-static pjmedia_vid_codec_op ffmpeg_op = 
-{
-    &ffmpeg_codec_init,
-    &ffmpeg_codec_open,
-    &ffmpeg_codec_close,
-    &ffmpeg_codec_modify,
-    &ffmpeg_codec_get_param,
-    &ffmpeg_codec_encode_begin,
-    &ffmpeg_codec_encode_more,
-    &ffmpeg_codec_decode,
-    NULL
-};
-
-/* Definition for FFMPEG codecs factory operations. */
-static pjmedia_vid_codec_factory_op ffmpeg_factory_op =
-{
-    &ffmpeg_test_alloc,
-    &ffmpeg_default_attr,
-    &ffmpeg_enum_codecs,
-    &ffmpeg_alloc_codec,
-    &ffmpeg_dealloc_codec
-};
-
-
-/* FFMPEG codecs factory */
-static struct ffmpeg_factory {
-    pjmedia_vid_codec_factory    base;
-    pjmedia_vid_codec_mgr	*mgr;
-    pj_pool_factory             *pf;
-    pj_pool_t		        *pool;
-    pj_mutex_t		        *mutex;
-} ffmpeg_factory;
-
-
-typedef struct ffmpeg_codec_desc ffmpeg_codec_desc;
-
-
-/* FFMPEG codecs private data. */
-typedef struct ffmpeg_private
-{
-    const ffmpeg_codec_desc	    *desc;
-    pjmedia_vid_codec_param	     param;	/**< Codec param	    */
-    pj_pool_t			    *pool;	/**< Pool for each instance */
-
-    /* Format info and apply format param */
-    const pjmedia_video_format_info *enc_vfi;
-    pjmedia_video_apply_fmt_param    enc_vafp;
-    const pjmedia_video_format_info *dec_vfi;
-    pjmedia_video_apply_fmt_param    dec_vafp;
-
-    /* Buffers, only needed for multi-packets */
-    pj_bool_t			     whole;
-    void			    *enc_buf;
-    unsigned			     enc_buf_size;
-    pj_bool_t			     enc_buf_is_keyframe;
-    unsigned			     enc_frame_len;
-    unsigned     		     enc_processed;
-    void			    *dec_buf;
-    unsigned			     dec_buf_size;
-    pj_timestamp		     last_dec_keyframe_ts; 
-
-    /* The ffmpeg codec states. */
-    AVCodec			    *enc;
-    AVCodec			    *dec;
-    AVCodecContext		    *enc_ctx;
-    AVCodecContext		    *dec_ctx;
-
-    /* The ffmpeg decoder cannot set the output format, so format conversion
-     * may be needed for post-decoding.
-     */
-    enum PixelFormat		     expected_dec_fmt;
-						/**< Expected output format of 
-						     ffmpeg decoder	    */
-
-    void			    *data;	/**< Codec specific data    */		    
-} ffmpeg_private;
-
-
-/* Shortcuts for packetize & unpacketize function declaration,
- * as it has long params and is reused many times!
- */
-#define FUNC_PACKETIZE(name) \
-    pj_status_t(name)(ffmpeg_private *ff, pj_uint8_t *bits, \
-		      pj_size_t bits_len, unsigned *bits_pos, \
-		      const pj_uint8_t **payload, pj_size_t *payload_len)
-
-#define FUNC_UNPACKETIZE(name) \
-    pj_status_t(name)(ffmpeg_private *ff, const pj_uint8_t *payload, \
-		      pj_size_t payload_len, pj_uint8_t *bits, \
-		      pj_size_t bits_len, unsigned *bits_pos)
-
-#define FUNC_FMT_MATCH(name) \
-    pj_status_t(name)(pj_pool_t *pool, \
-		      pjmedia_sdp_media *offer, unsigned o_fmt_idx, \
-		      pjmedia_sdp_media *answer, unsigned a_fmt_idx, \
-		      unsigned option)
-
-
-/* Type definition of codec specific functions */
-typedef FUNC_PACKETIZE(*func_packetize);
-typedef FUNC_UNPACKETIZE(*func_unpacketize);
-typedef pj_status_t (*func_preopen)	(ffmpeg_private *ff);
-typedef pj_status_t (*func_postopen)	(ffmpeg_private *ff);
-typedef FUNC_FMT_MATCH(*func_sdp_fmt_match);
-
-
-/* FFMPEG codec info */
-struct ffmpeg_codec_desc
-{
-    /* Predefined info */
-    pjmedia_vid_codec_info       info;
-    pjmedia_format_id		 base_fmt_id;	/**< Some codecs may be exactly
-						     same or compatible with
-						     another codec, base format
-						     will tell the initializer
-						     to copy this codec desc
-						     from its base format   */
-    pjmedia_rect_size            size;
-    pjmedia_ratio                fps;
-    pj_uint32_t			 avg_bps;
-    pj_uint32_t			 max_bps;
-    func_packetize		 packetize;
-    func_unpacketize		 unpacketize;
-    func_preopen		 preopen;
-    func_preopen		 postopen;
-    func_sdp_fmt_match		 sdp_fmt_match;
-    pjmedia_codec_fmtp		 dec_fmtp;
-
-    /* Init time defined info */
-    pj_bool_t			 enabled;
-    AVCodec                     *enc;
-    AVCodec                     *dec;
-};
-
-
-#if PJMEDIA_HAS_FFMPEG_CODEC_H264 && !LIBAVCODEC_VER_AT_LEAST(53,20)
-#   error "Must use libavcodec version 53.20 or later to enable FFMPEG H264"
-#endif
-
-/* H264 constants */
-#define PROFILE_H264_BASELINE		66
-#define PROFILE_H264_MAIN		77
-
-/* Codec specific functions */
-#if PJMEDIA_HAS_FFMPEG_CODEC_H264
-static pj_status_t h264_preopen(ffmpeg_private *ff);
-static pj_status_t h264_postopen(ffmpeg_private *ff);
-static FUNC_PACKETIZE(h264_packetize);
-static FUNC_UNPACKETIZE(h264_unpacketize);
-#endif
-
-static pj_status_t h263_preopen(ffmpeg_private *ff);
-static FUNC_PACKETIZE(h263_packetize);
-static FUNC_UNPACKETIZE(h263_unpacketize);
-
-
-/* Internal codec info */
-static ffmpeg_codec_desc codec_desc[] =
-{
-#if PJMEDIA_HAS_FFMPEG_CODEC_H264
-    {
-	{PJMEDIA_FORMAT_H264, PJMEDIA_RTP_PT_H264, {"H264",4},
-	 {"Constrained Baseline (level=30, pack=1)", 39}},
-	0,
-	{720, 480},	{15, 1},	256000, 256000,
-	&h264_packetize, &h264_unpacketize, &h264_preopen, &h264_postopen,
-	&pjmedia_vid_codec_h264_match_sdp,
-	/* Leading space for better compatibility (strange indeed!) */
-	{2, { {{"profile-level-id",16},    {"42e01e",6}}, 
-	      {{" packetization-mode",19},  {"1",1}}, } },
-    },
-#endif
-
-#if PJMEDIA_HAS_FFMPEG_CODEC_H263P
-    {
-	{PJMEDIA_FORMAT_H263P, PJMEDIA_RTP_PT_H263P, {"H263-1998",9}},
-	PJMEDIA_FORMAT_H263,
-	{352, 288},	{15, 1},	256000, 256000,
-	&h263_packetize, &h263_unpacketize, &h263_preopen, NULL, NULL,
-	{2, { {{"CIF",3},   {"1",1}}, 
-	      {{"QCIF",4},  {"1",1}}, } },
-    },
-#endif
-
-    {
-	{PJMEDIA_FORMAT_H263,	PJMEDIA_RTP_PT_H263,	{"H263",4}},
-    },
-    {
-	{PJMEDIA_FORMAT_H261,	PJMEDIA_RTP_PT_H261,	{"H261",4}},
-    },
-    {
-	{PJMEDIA_FORMAT_MJPEG,	PJMEDIA_RTP_PT_JPEG,	{"JPEG",4}},
-	PJMEDIA_FORMAT_MJPEG, {640, 480}, {25, 1},
-    },
-    {
-	{PJMEDIA_FORMAT_MPEG4,	0,			{"MP4V",4}},
-	PJMEDIA_FORMAT_MPEG4, {640, 480}, {25, 1},
-    },
-};
-
-#if PJMEDIA_HAS_FFMPEG_CODEC_H264
-
-typedef struct h264_data
-{
-    pjmedia_vid_codec_h264_fmtp	 fmtp;
-    pjmedia_h264_packetizer	*pktz;
-} h264_data;
-
-
-static pj_status_t h264_preopen(ffmpeg_private *ff)
-{
-    h264_data *data;
-    pjmedia_h264_packetizer_cfg pktz_cfg;
-    pj_status_t status;
-
-    data = PJ_POOL_ZALLOC_T(ff->pool, h264_data);
-    ff->data = data;
-
-    /* Parse remote fmtp */
-    status = pjmedia_vid_codec_h264_parse_fmtp(&ff->param.enc_fmtp,
-					       &data->fmtp);
-    if (status != PJ_SUCCESS)
-	return status;
-
-    /* Create packetizer */
-    pktz_cfg.mtu = ff->param.enc_mtu;
-#if 0
-    if (data->fmtp.packetization_mode == 0)
-	pktz_cfg.mode = PJMEDIA_H264_PACKETIZER_MODE_SINGLE_NAL;
-    else if (data->fmtp.packetization_mode == 1)
-	pktz_cfg.mode = PJMEDIA_H264_PACKETIZER_MODE_NON_INTERLEAVED;
-    else
-	return PJ_ENOTSUP;
-#else
-    if (data->fmtp.packetization_mode!=
-				PJMEDIA_H264_PACKETIZER_MODE_SINGLE_NAL &&
-	data->fmtp.packetization_mode!=
-				PJMEDIA_H264_PACKETIZER_MODE_NON_INTERLEAVED)
-    {
-	return PJ_ENOTSUP;
-    }
-    /* Better always send in single NAL mode for better compatibility */
-    pktz_cfg.mode = PJMEDIA_H264_PACKETIZER_MODE_SINGLE_NAL;
-#endif
-
-    status = pjmedia_h264_packetizer_create(ff->pool, &pktz_cfg, &data->pktz);
-    if (status != PJ_SUCCESS)
-	return status;
-
-    /* Apply SDP fmtp to format in codec param */
-    if (!ff->param.ignore_fmtp) {
-	status = pjmedia_vid_codec_h264_apply_fmtp(&ff->param);
-	if (status != PJ_SUCCESS)
-	    return status;
-    }
-
-    if (ff->param.dir & PJMEDIA_DIR_ENCODING) {
-	pjmedia_video_format_detail *vfd;
-	AVCodecContext *ctx = ff->enc_ctx;
-	const char *profile = NULL;
-
-	vfd = pjmedia_format_get_video_format_detail(&ff->param.enc_fmt, 
-						     PJ_TRUE);
-
-	/* Override generic params after applying SDP fmtp */
-	ctx->width = vfd->size.w;
-	ctx->height = vfd->size.h;
-	ctx->time_base.num = vfd->fps.denum;
-	ctx->time_base.den = vfd->fps.num;
-
-	/* Apply profile. */
-	ctx->profile  = data->fmtp.profile_idc;
-	switch (ctx->profile) {
-	case PROFILE_H264_BASELINE:
-	    profile = "baseline";
-	    break;
-	case PROFILE_H264_MAIN:
-	    profile = "main";
-	    break;
-	default:
-	    break;
-	}
-	if (profile &&
-	    av_set_string3(ctx->priv_data, "profile", profile, 0, NULL))
-	{
-	    PJ_LOG(3, (THIS_FILE, "Failed to set H264 profile"));
-	}
-
-	/* Apply profile constraint bits. */
-	//PJ_TODO(set_h264_constraint_bits_properly_in_ffmpeg);
-	if (data->fmtp.profile_iop) {
-#if defined(FF_PROFILE_H264_CONSTRAINED)
-	    ctx->profile |= FF_PROFILE_H264_CONSTRAINED;
-#endif
-	}
-
-	/* Apply profile level. */
-	ctx->level    = data->fmtp.level;
-
-	/* Limit NAL unit size as we prefer single NAL unit packetization */
-	if (!av_set_int(ctx->priv_data, "slice-max-size", ff->param.enc_mtu))
-	{
-	    PJ_LOG(3, (THIS_FILE, "Failed to set H264 max NAL size to %d",
-		       ff->param.enc_mtu));
-	}
-
-	/* Apply intra-refresh */
-	if (!av_set_int(ctx->priv_data, "intra-refresh", 1))
-	{
-	    PJ_LOG(3, (THIS_FILE, "Failed to set x264 intra-refresh"));
-	}
-
-	/* Misc x264 settings (performance, quality, latency, etc).
-	 * Let's just use the x264 predefined preset & tune.
-	 */
-	if (av_set_string3(ctx->priv_data, "preset", "veryfast", 0, NULL))
-	{
-	    PJ_LOG(3, (THIS_FILE, "Failed to set x264 preset 'veryfast'"));
-	}
-	if (av_set_string3(ctx->priv_data, "tune", "animation+zerolatency",
-			   0, NULL))
-	{
-	    PJ_LOG(3, (THIS_FILE, "Failed to set x264 tune 'zerolatency'"));
-	}
-    }
-
-    if (ff->param.dir & PJMEDIA_DIR_DECODING) {
-	AVCodecContext *ctx = ff->dec_ctx;
-
-	/* Apply the "sprop-parameter-sets" fmtp from remote SDP to
-	 * extradata of ffmpeg codec context.
-	 */
-	if (data->fmtp.sprop_param_sets_len) {
-	    ctx->extradata_size = data->fmtp.sprop_param_sets_len;
-	    ctx->extradata = data->fmtp.sprop_param_sets;
-	}
-    }
-
-    return PJ_SUCCESS;
-}
-
-static pj_status_t h264_postopen(ffmpeg_private *ff)
-{
-    h264_data *data = (h264_data*)ff->data;
-    PJ_UNUSED_ARG(data);
-    return PJ_SUCCESS;
-}
-
-static FUNC_PACKETIZE(h264_packetize)
-{
-    h264_data *data = (h264_data*)ff->data;
-    return pjmedia_h264_packetize(data->pktz, bits, bits_len, bits_pos,
-				  payload, payload_len);
-}
-
-static FUNC_UNPACKETIZE(h264_unpacketize)
-{
-    h264_data *data = (h264_data*)ff->data;
-    return pjmedia_h264_unpacketize(data->pktz, payload, payload_len,
-				    bits, bits_len, bits_pos);
-}
-
-#endif /* PJMEDIA_HAS_FFMPEG_CODEC_H264 */
-
-
-#if PJMEDIA_HAS_FFMPEG_CODEC_H263P
-
-typedef struct h263_data
-{
-    pjmedia_h263_packetizer	*pktz;
-} h263_data;
-
-/* H263 pre-open */
-static pj_status_t h263_preopen(ffmpeg_private *ff)
-{
-    h263_data *data;
-    pjmedia_h263_packetizer_cfg pktz_cfg;
-    pj_status_t status;
-
-    data = PJ_POOL_ZALLOC_T(ff->pool, h263_data);
-    ff->data = data;
-
-    /* Create packetizer */
-    pktz_cfg.mtu = ff->param.enc_mtu;
-    pktz_cfg.mode = PJMEDIA_H263_PACKETIZER_MODE_RFC4629;
-    status = pjmedia_h263_packetizer_create(ff->pool, &pktz_cfg, &data->pktz);
-    if (status != PJ_SUCCESS)
-	return status;
-
-    /* Apply fmtp settings to codec param */
-    if (!ff->param.ignore_fmtp) {
-	status = pjmedia_vid_codec_h263_apply_fmtp(&ff->param);
-    }
-
-    /* Override generic params after applying SDP fmtp */
-    if (ff->param.dir & PJMEDIA_DIR_ENCODING) {
-	pjmedia_video_format_detail *vfd;
-	AVCodecContext *ctx = ff->enc_ctx;
-
-	vfd = pjmedia_format_get_video_format_detail(&ff->param.enc_fmt, 
-						     PJ_TRUE);
-
-	/* Override generic params after applying SDP fmtp */
-	ctx->width = vfd->size.w;
-	ctx->height = vfd->size.h;
-	ctx->time_base.num = vfd->fps.denum;
-	ctx->time_base.den = vfd->fps.num;
-    }
-
-    return status;
-}
-
-static FUNC_PACKETIZE(h263_packetize)
-{
-    h263_data *data = (h263_data*)ff->data;
-    return pjmedia_h263_packetize(data->pktz, bits, bits_len, bits_pos,
-				  payload, payload_len);
-}
-
-static FUNC_UNPACKETIZE(h263_unpacketize)
-{
-    h263_data *data = (h263_data*)ff->data;
-    return pjmedia_h263_unpacketize(data->pktz, payload, payload_len,
-				    bits, bits_len, bits_pos);
-}
-
-#endif /* PJMEDIA_HAS_FFMPEG_CODEC_H263P */
-
-
-static const ffmpeg_codec_desc* find_codec_desc_by_info(
-			const pjmedia_vid_codec_info *info)
-{
-    int i;
-
-    for (i=0; i<PJ_ARRAY_SIZE(codec_desc); ++i) {
-	ffmpeg_codec_desc *desc = &codec_desc[i];
-
-	if (desc->enabled &&
-	    (desc->info.fmt_id == info->fmt_id) &&
-            ((desc->info.dir & info->dir) == info->dir) &&
-	    (desc->info.pt == info->pt) &&
-	    (desc->info.packings & info->packings))
-        {
-            return desc;
-        }
-    }
-
-    return NULL;
-}
-
-
-static int find_codec_idx_by_fmt_id(pjmedia_format_id fmt_id)
-{
-    int i;
-    for (i=0; i<PJ_ARRAY_SIZE(codec_desc); ++i) {
-	if (codec_desc[i].info.fmt_id == fmt_id)
-	    return i;
-    }
-
-    return -1;
-}
-
-
-/*
- * Initialize and register FFMPEG codec factory to pjmedia endpoint.
- */
-PJ_DEF(pj_status_t) pjmedia_codec_ffmpeg_init(pjmedia_vid_codec_mgr *mgr,
-                                              pj_pool_factory *pf)
-{
-    pj_pool_t *pool;
-    AVCodec *c;
-    pj_status_t status;
-    unsigned i;
-
-    if (ffmpeg_factory.pool != NULL) {
-	/* Already initialized. */
-	return PJ_SUCCESS;
-    }
-
-    if (!mgr) mgr = pjmedia_vid_codec_mgr_instance();
-    PJ_ASSERT_RETURN(mgr, PJ_EINVAL);
-
-    /* Create FFMPEG codec factory. */
-    ffmpeg_factory.base.op = &ffmpeg_factory_op;
-    ffmpeg_factory.base.factory_data = NULL;
-    ffmpeg_factory.mgr = mgr;
-    ffmpeg_factory.pf = pf;
-
-    pool = pj_pool_create(pf, "ffmpeg codec factory", 256, 256, NULL);
-    if (!pool)
-	return PJ_ENOMEM;
-
-    /* Create mutex. */
-    status = pj_mutex_create_simple(pool, "ffmpeg codec factory", 
-				    &ffmpeg_factory.mutex);
-    if (status != PJ_SUCCESS)
-	goto on_error;
-
-    avcodec_init();
-    avcodec_register_all();
-    av_log_set_level(AV_LOG_ERROR);
-
-    /* Enum FFMPEG codecs */
-    for (c=av_codec_next(NULL); c; c=av_codec_next(c)) {
-        ffmpeg_codec_desc *desc;
-	pjmedia_format_id fmt_id;
-	int codec_info_idx;
-        
-#if LIBAVCODEC_VERSION_MAJOR <= 52
-#   define AVMEDIA_TYPE_VIDEO	CODEC_TYPE_VIDEO
-#endif
-        if (c->type != AVMEDIA_TYPE_VIDEO)
-            continue;
-
-        /* Video encoder and decoder are usually implemented in separate
-         * AVCodec instances. While the codec attributes (e.g: raw formats,
-	 * supported fps) are in the encoder.
-         */
-
-	//PJ_LOG(3, (THIS_FILE, "%s", c->name));
-	status = CodecID_to_pjmedia_format_id(c->id, &fmt_id);
-	/* Skip if format ID is unknown */
-	if (status != PJ_SUCCESS)
-	    continue;
-
-	codec_info_idx = find_codec_idx_by_fmt_id(fmt_id);
-	/* Skip if codec is unwanted by this wrapper (not listed in 
-	 * the codec info array)
-	 */
-	if (codec_info_idx < 0)
-	    continue;
-
-	desc = &codec_desc[codec_info_idx];
-
-	/* Skip duplicated codec implementation */
-	if ((c->encode && (desc->info.dir & PJMEDIA_DIR_ENCODING)) ||
-	    (c->decode && (desc->info.dir & PJMEDIA_DIR_DECODING)))
-	{
-	    continue;
-	}
-
-	/* Get raw/decoded format ids in the encoder */
-	if (c->pix_fmts && c->encode) {
-	    pjmedia_format_id raw_fmt[PJMEDIA_VID_CODEC_MAX_DEC_FMT_CNT];
-	    unsigned raw_fmt_cnt = 0;
-	    unsigned raw_fmt_cnt_should_be = 0;
-	    const enum PixelFormat *p = c->pix_fmts;
-
-	    for(;(p && *p != -1) &&
-		 (raw_fmt_cnt < PJMEDIA_VID_CODEC_MAX_DEC_FMT_CNT);
-		 ++p)
-	    {
-		pjmedia_format_id fmt_id;
-
-		raw_fmt_cnt_should_be++;
-		status = PixelFormat_to_pjmedia_format_id(*p, &fmt_id);
-		if (status != PJ_SUCCESS) {
-		    PJ_LOG(6, (THIS_FILE, "Unrecognized ffmpeg pixel "
-			       "format %d", *p));
-		    continue;
-		}
-		
-		//raw_fmt[raw_fmt_cnt++] = fmt_id;
-		/* Disable some formats due to H.264 error:
-		 * x264 [error]: baseline profile doesn't support 4:4:4
-		 */
-		if (desc->info.pt != PJMEDIA_RTP_PT_H264 ||
-		    fmt_id != PJMEDIA_FORMAT_RGB24)
-		{
-		    raw_fmt[raw_fmt_cnt++] = fmt_id;
-		}
-	    }
-
-	    if (raw_fmt_cnt == 0) {
-		PJ_LOG(5, (THIS_FILE, "No recognized raw format "
-				      "for codec [%s/%s], codec ignored",
-				      c->name, c->long_name));
-		/* Skip this encoder */
-		continue;
-	    }
-
-	    if (raw_fmt_cnt < raw_fmt_cnt_should_be) {
-		PJ_LOG(6, (THIS_FILE, "Codec [%s/%s] have %d raw formats, "
-				      "recognized only %d raw formats",
-				      c->name, c->long_name,
-				      raw_fmt_cnt_should_be, raw_fmt_cnt));
-	    }
-
-	    desc->info.dec_fmt_id_cnt = raw_fmt_cnt;
-	    pj_memcpy(desc->info.dec_fmt_id, raw_fmt, 
-		      sizeof(raw_fmt[0])*raw_fmt_cnt);
-	}
-
-	/* Get supported framerates */
-	if (c->supported_framerates) {
-	    const AVRational *fr = c->supported_framerates;
-	    while ((fr->num != 0 || fr->den != 0) && 
-		   desc->info.fps_cnt < PJMEDIA_VID_CODEC_MAX_FPS_CNT)
-	    {
-		desc->info.fps[desc->info.fps_cnt].num = fr->num;
-		desc->info.fps[desc->info.fps_cnt].denum = fr->den;
-		++desc->info.fps_cnt;
-		++fr;
-	    }
-	}
-
-	/* Get ffmpeg encoder instance */
-        if (c->encode && !desc->enc) {
-            desc->info.dir |= PJMEDIA_DIR_ENCODING;
-            desc->enc = c;
-        }
-	
-	/* Get ffmpeg decoder instance */
-        if (c->decode && !desc->dec) {
-            desc->info.dir |= PJMEDIA_DIR_DECODING;
-            desc->dec = c;
-        }
-
-	/* Enable this codec when any ffmpeg codec instance are recognized
-	 * and the supported raw formats info has been collected.
-	 */
-	if ((desc->dec || desc->enc) && desc->info.dec_fmt_id_cnt)
-	{
-	    desc->enabled = PJ_TRUE;
-	}
-
-	/* Normalize default value of clock rate */
-	if (desc->info.clock_rate == 0)
-	    desc->info.clock_rate = 90000;
-
-	/* Set supported packings */
-	desc->info.packings |= PJMEDIA_VID_PACKING_WHOLE;
-	if (desc->packetize && desc->unpacketize)
-	    desc->info.packings |= PJMEDIA_VID_PACKING_PACKETS;
-
-    }
-
-    /* Review all codecs for applying base format, registering format match for
-     * SDP negotiation, etc.
-     */
-    for (i = 0; i < PJ_ARRAY_SIZE(codec_desc); ++i) {
-	ffmpeg_codec_desc *desc = &codec_desc[i];
-
-	/* Init encoder/decoder description from base format */
-	if (desc->base_fmt_id && (!desc->dec || !desc->enc)) {
-	    ffmpeg_codec_desc *base_desc = NULL;
-	    int base_desc_idx;
-	    pjmedia_dir copied_dir = PJMEDIA_DIR_NONE;
-
-	    base_desc_idx = find_codec_idx_by_fmt_id(desc->base_fmt_id);
-	    if (base_desc_idx != -1)
-		base_desc = &codec_desc[base_desc_idx];
-	    if (!base_desc || !base_desc->enabled)
-		continue;
-
-	    /* Copy description from base codec */
-	    if (!desc->info.dec_fmt_id_cnt) {
-		desc->info.dec_fmt_id_cnt = base_desc->info.dec_fmt_id_cnt;
-		pj_memcpy(desc->info.dec_fmt_id, base_desc->info.dec_fmt_id, 
-			  sizeof(pjmedia_format_id)*desc->info.dec_fmt_id_cnt);
-	    }
-	    if (!desc->info.fps_cnt) {
-		desc->info.fps_cnt = base_desc->info.fps_cnt;
-		pj_memcpy(desc->info.fps, base_desc->info.fps, 
-			  sizeof(desc->info.fps[0])*desc->info.fps_cnt);
-	    }
-	    if (!desc->info.clock_rate) {
-		desc->info.clock_rate = base_desc->info.clock_rate;
-	    }
-	    if (!desc->dec && base_desc->dec) {
-		copied_dir |= PJMEDIA_DIR_DECODING;
-		desc->dec = base_desc->dec;
-	    }
-	    if (!desc->enc && base_desc->enc) {
-		copied_dir |= PJMEDIA_DIR_ENCODING;
-		desc->enc = base_desc->enc;
-	    }
-
-	    desc->info.dir |= copied_dir;
-	    desc->enabled = (desc->info.dir != PJMEDIA_DIR_NONE);
-
-	    /* Set supported packings */
-	    desc->info.packings |= PJMEDIA_VID_PACKING_WHOLE;
-	    if (desc->packetize && desc->unpacketize)
-		desc->info.packings |= PJMEDIA_VID_PACKING_PACKETS;
-
-	    if (copied_dir != PJMEDIA_DIR_NONE) {
-		const char *dir_name[] = {NULL, "encoder", "decoder", "codec"};
-		PJ_LOG(5, (THIS_FILE, "The %.*s %s is using base codec (%.*s)",
-			   desc->info.encoding_name.slen,
-			   desc->info.encoding_name.ptr,
-			   dir_name[copied_dir],
-			   base_desc->info.encoding_name.slen,
-			   base_desc->info.encoding_name.ptr));
-	    }
-        }
-
-	/* Registering format match for SDP negotiation */
-	if (desc->sdp_fmt_match) {
-	    status = pjmedia_sdp_neg_register_fmt_match_cb(
-						&desc->info.encoding_name,
-						desc->sdp_fmt_match);
-	    pj_assert(status == PJ_SUCCESS);
-	}
-
-	/* Print warning about missing encoder/decoder */
-	if (!desc->enc) {
-	    PJ_LOG(4, (THIS_FILE, "Cannot find %.*s encoder in ffmpeg library",
-		       desc->info.encoding_name.slen,
-		       desc->info.encoding_name.ptr));
-	}
-	if (!desc->dec) {
-	    PJ_LOG(4, (THIS_FILE, "Cannot find %.*s decoder in ffmpeg library",
-		       desc->info.encoding_name.slen,
-		       desc->info.encoding_name.ptr));
-	}
-    }
-
-    /* Register codec factory to codec manager. */
-    status = pjmedia_vid_codec_mgr_register_factory(mgr, 
-						    &ffmpeg_factory.base);
-    if (status != PJ_SUCCESS)
-	goto on_error;
-
-    ffmpeg_factory.pool = pool;
-
-    /* Done. */
-    return PJ_SUCCESS;
-
-on_error:
-    pj_pool_release(pool);
-    return status;
-}
-
-/*
- * Unregister FFMPEG codecs factory from pjmedia endpoint.
- */
-PJ_DEF(pj_status_t) pjmedia_codec_ffmpeg_deinit(void)
-{
-    pj_status_t status = PJ_SUCCESS;
-
-    if (ffmpeg_factory.pool == NULL) {
-	/* Already deinitialized */
-	return PJ_SUCCESS;
-    }
-
-    pj_mutex_lock(ffmpeg_factory.mutex);
-
-    /* Unregister FFMPEG codecs factory. */
-    status = pjmedia_vid_codec_mgr_unregister_factory(ffmpeg_factory.mgr,
-						      &ffmpeg_factory.base);
-
-    /* Destroy mutex. */
-    pj_mutex_destroy(ffmpeg_factory.mutex);
-
-    /* Destroy pool. */
-    pj_pool_release(ffmpeg_factory.pool);
-    ffmpeg_factory.pool = NULL;
-
-    return status;
-}
-
-
-/* 
- * Check if factory can allocate the specified codec. 
- */
-static pj_status_t ffmpeg_test_alloc( pjmedia_vid_codec_factory *factory, 
-				      const pjmedia_vid_codec_info *info )
-{
-    const ffmpeg_codec_desc *desc;
-
-    PJ_ASSERT_RETURN(factory==&ffmpeg_factory.base, PJ_EINVAL);
-    PJ_ASSERT_RETURN(info, PJ_EINVAL);
-
-    desc = find_codec_desc_by_info(info);
-    if (!desc) {
-        return PJMEDIA_CODEC_EUNSUP;
-    }
-
-    return PJ_SUCCESS;
-}
-
-/*
- * Generate default attribute.
- */
-static pj_status_t ffmpeg_default_attr( pjmedia_vid_codec_factory *factory, 
-				        const pjmedia_vid_codec_info *info, 
-				        pjmedia_vid_codec_param *attr )
-{
-    const ffmpeg_codec_desc *desc;
-    unsigned i;
-
-    PJ_ASSERT_RETURN(factory==&ffmpeg_factory.base, PJ_EINVAL);
-    PJ_ASSERT_RETURN(info && attr, PJ_EINVAL);
-
-    desc = find_codec_desc_by_info(info);
-    if (!desc) {
-        return PJMEDIA_CODEC_EUNSUP;
-    }
-
-    pj_bzero(attr, sizeof(pjmedia_vid_codec_param));
-
-    /* Scan the requested packings and use the lowest number */
-    attr->packing = 0;
-    for (i=0; i<15; ++i) {
-	unsigned packing = (1 << i);
-	if ((desc->info.packings & info->packings) & packing) {
-	    attr->packing = (pjmedia_vid_packing)packing;
-	    break;
-	}
-    }
-    if (attr->packing == 0) {
-	/* No supported packing in info */
-	return PJMEDIA_CODEC_EUNSUP;
-    }
-
-    /* Direction */
-    attr->dir = desc->info.dir;
-
-    /* Encoded format */
-    pjmedia_format_init_video(&attr->enc_fmt, desc->info.fmt_id,
-                              desc->size.w, desc->size.h,
-			      desc->fps.num, desc->fps.denum);
-
-    /* Decoded format */
-    pjmedia_format_init_video(&attr->dec_fmt, desc->info.dec_fmt_id[0],
-                              desc->size.w, desc->size.h,
-			      desc->fps.num, desc->fps.denum);
-
-    /* Decoding fmtp */
-    attr->dec_fmtp = desc->dec_fmtp;
-
-    /* Bitrate */
-    attr->enc_fmt.det.vid.avg_bps = desc->avg_bps;
-    attr->enc_fmt.det.vid.max_bps = desc->max_bps;
-
-    /* Encoding MTU */
-    attr->enc_mtu = PJMEDIA_MAX_VID_PAYLOAD_SIZE;
-
-    return PJ_SUCCESS;
-}
-
-/*
- * Enum codecs supported by this factory.
- */
-static pj_status_t ffmpeg_enum_codecs( pjmedia_vid_codec_factory *factory,
-				       unsigned *count, 
-				       pjmedia_vid_codec_info codecs[])
-{
-    unsigned i, max_cnt;
-
-    PJ_ASSERT_RETURN(codecs && *count > 0, PJ_EINVAL);
-    PJ_ASSERT_RETURN(factory == &ffmpeg_factory.base, PJ_EINVAL);
-
-    max_cnt = PJ_MIN(*count, PJ_ARRAY_SIZE(codec_desc));
-    *count = 0;
-
-    for (i=0; i<max_cnt; ++i) {
-	if (codec_desc[i].enabled) {
-	    pj_memcpy(&codecs[*count], &codec_desc[i].info, 
-		      sizeof(pjmedia_vid_codec_info));
-	    (*count)++;
-	}
-    }
-
-    return PJ_SUCCESS;
-}
-
-/*
- * Allocate a new codec instance.
- */
-static pj_status_t ffmpeg_alloc_codec( pjmedia_vid_codec_factory *factory, 
-				       const pjmedia_vid_codec_info *info,
-				       pjmedia_vid_codec **p_codec)
-{
-    ffmpeg_private *ff;
-    const ffmpeg_codec_desc *desc;
-    pjmedia_vid_codec *codec;
-    pj_pool_t *pool = NULL;
-    pj_status_t status = PJ_SUCCESS;
-
-    PJ_ASSERT_RETURN(factory && info && p_codec, PJ_EINVAL);
-    PJ_ASSERT_RETURN(factory == &ffmpeg_factory.base, PJ_EINVAL);
-
-    desc = find_codec_desc_by_info(info);
-    if (!desc) {
-        return PJMEDIA_CODEC_EUNSUP;
-    }
-
-    /* Create pool for codec instance */
-    pool = pj_pool_create(ffmpeg_factory.pf, "ffmpeg codec", 512, 512, NULL);
-    codec = PJ_POOL_ZALLOC_T(pool, pjmedia_vid_codec);
-    if (!codec) {
-        status = PJ_ENOMEM;
-        goto on_error;
-    }
-    codec->op = &ffmpeg_op;
-    codec->factory = factory;
-    ff = PJ_POOL_ZALLOC_T(pool, ffmpeg_private);
-    if (!ff) {
-        status = PJ_ENOMEM;
-        goto on_error;
-    }
-    codec->codec_data = ff;
-    ff->pool = pool;
-    ff->enc = desc->enc;
-    ff->dec = desc->dec;
-    ff->desc = desc;
-
-    *p_codec = codec;
-    return PJ_SUCCESS;
-
-on_error:
-    if (pool)
-        pj_pool_release(pool);
-    return status;
-}
-
-/*
- * Free codec.
- */
-static pj_status_t ffmpeg_dealloc_codec( pjmedia_vid_codec_factory *factory, 
-				         pjmedia_vid_codec *codec )
-{
-    ffmpeg_private *ff;
-    pj_pool_t *pool;
-
-    PJ_ASSERT_RETURN(factory && codec, PJ_EINVAL);
-    PJ_ASSERT_RETURN(factory == &ffmpeg_factory.base, PJ_EINVAL);
-
-    /* Close codec, if it's not closed. */
-    ff = (ffmpeg_private*) codec->codec_data;
-    pool = ff->pool;
-    codec->codec_data = NULL;
-    pj_pool_release(pool);
-
-    return PJ_SUCCESS;
-}
-
-/*
- * Init codec.
- */
-static pj_status_t ffmpeg_codec_init( pjmedia_vid_codec *codec, 
-				      pj_pool_t *pool )
-{
-    PJ_UNUSED_ARG(codec);
-    PJ_UNUSED_ARG(pool);
-    return PJ_SUCCESS;
-}
-
-static void print_ffmpeg_err(int err)
-{
-#if LIBAVCODEC_VER_AT_LEAST(52,72)
-    char errbuf[512];
-    if (av_strerror(err, errbuf, sizeof(errbuf)) >= 0)
-        PJ_LOG(5, (THIS_FILE, "ffmpeg err %d: %s", err, errbuf));
-#else
-    PJ_LOG(5, (THIS_FILE, "ffmpeg err %d", err));
-#endif
-
-}
-
-static pj_status_t open_ffmpeg_codec(ffmpeg_private *ff,
-                                     pj_mutex_t *ff_mutex)
-{
-    enum PixelFormat pix_fmt;
-    pjmedia_video_format_detail *vfd;
-    pj_bool_t enc_opened = PJ_FALSE, dec_opened = PJ_FALSE;
-    pj_status_t status;
-
-    /* Get decoded pixel format */
-    status = pjmedia_format_id_to_PixelFormat(ff->param.dec_fmt.id,
-                                              &pix_fmt);
-    if (status != PJ_SUCCESS)
-        return status;
-    ff->expected_dec_fmt = pix_fmt;
-
-    /* Get video format detail for shortcut access to encoded format */
-    vfd = pjmedia_format_get_video_format_detail(&ff->param.enc_fmt, 
-						 PJ_TRUE);
-
-    /* Allocate ffmpeg codec context */
-    if (ff->param.dir & PJMEDIA_DIR_ENCODING) {
-#if LIBAVCODEC_VER_AT_LEAST(53,20)
-	ff->enc_ctx = avcodec_alloc_context3(ff->enc);
-#else
-	ff->enc_ctx = avcodec_alloc_context();
-#endif
-	if (ff->enc_ctx == NULL)
-	    goto on_error;
-    }
-    if (ff->param.dir & PJMEDIA_DIR_DECODING) {
-#if LIBAVCODEC_VER_AT_LEAST(53,20)
-	ff->dec_ctx = avcodec_alloc_context3(ff->dec);
-#else
-	ff->dec_ctx = avcodec_alloc_context();
-#endif
-	if (ff->dec_ctx == NULL)
-	    goto on_error;
-    }
-
-    /* Init generic encoder params */
-    if (ff->param.dir & PJMEDIA_DIR_ENCODING) {
-        AVCodecContext *ctx = ff->enc_ctx;
-
-        ctx->pix_fmt = pix_fmt;
-	ctx->width = vfd->size.w;
-	ctx->height = vfd->size.h;
-	ctx->time_base.num = vfd->fps.denum;
-	ctx->time_base.den = vfd->fps.num;
-	if (vfd->avg_bps) {
-	    ctx->bit_rate = vfd->avg_bps;
-	    if (vfd->max_bps > vfd->avg_bps)
-		ctx->bit_rate_tolerance = vfd->max_bps - vfd->avg_bps;
-	}
-	ctx->strict_std_compliance = FF_COMPLIANCE_STRICT;
-        ctx->workaround_bugs = FF_BUG_AUTODETECT;
-        ctx->opaque = ff;
-
-	/* Set no delay, note that this may cause some codec functionals
-	 * not working (e.g: rate control).
-	 */
-#if LIBAVCODEC_VER_AT_LEAST(52,113)
-	ctx->rc_lookahead = 0;
-#endif
-    }
-
-    /* Init generic decoder params */
-    if (ff->param.dir & PJMEDIA_DIR_DECODING) {
-	AVCodecContext *ctx = ff->dec_ctx;
-
-	/* Width/height may be overriden by ffmpeg after first decoding. */
-	ctx->width  = ctx->coded_width  = ff->param.dec_fmt.det.vid.size.w;
-	ctx->height = ctx->coded_height = ff->param.dec_fmt.det.vid.size.h;
-	ctx->strict_std_compliance = FF_COMPLIANCE_EXPERIMENTAL;
-        ctx->workaround_bugs = FF_BUG_AUTODETECT;
-        ctx->opaque = ff;
-    }
-
-    /* Override generic params or apply specific params before opening
-     * the codec.
-     */
-    if (ff->desc->preopen) {
-	status = (*ff->desc->preopen)(ff);
-	if (status != PJ_SUCCESS)
-	    goto on_error;
-    }
-
-    /* Open encoder */
-    if (ff->param.dir & PJMEDIA_DIR_ENCODING) {
-	int err;
-
-	pj_mutex_lock(ff_mutex);
-	err = avcodec_open(ff->enc_ctx, ff->enc);
-        pj_mutex_unlock(ff_mutex);
-        if (err < 0) {
-            print_ffmpeg_err(err);
-            status = PJMEDIA_CODEC_EFAILED;
-	    goto on_error;
-        }
-	enc_opened = PJ_TRUE;
-    }
-
-    /* Open decoder */
-    if (ff->param.dir & PJMEDIA_DIR_DECODING) {
-	int err;
-
-	pj_mutex_lock(ff_mutex);
-	err = avcodec_open(ff->dec_ctx, ff->dec);
-        pj_mutex_unlock(ff_mutex);
-        if (err < 0) {
-            print_ffmpeg_err(err);
-            status = PJMEDIA_CODEC_EFAILED;
-	    goto on_error;
-        }
-	dec_opened = PJ_TRUE;
-    }
-
-    /* Let the codec apply specific params after the codec opened */
-    if (ff->desc->postopen) {
-	status = (*ff->desc->postopen)(ff);
-	if (status != PJ_SUCCESS)
-	    goto on_error;
-    }
-
-    return PJ_SUCCESS;
-
-on_error:
-    if (ff->enc_ctx) {
-	if (enc_opened)
-	    avcodec_close(ff->enc_ctx);
-	av_free(ff->enc_ctx);
-	ff->enc_ctx = NULL;
-    }
-    if (ff->dec_ctx) {
-	if (dec_opened)
-	    avcodec_close(ff->dec_ctx);
-	av_free(ff->dec_ctx);
-	ff->dec_ctx = NULL;
-    }
-    return status;
-}
-
-/*
- * Open codec.
- */
-static pj_status_t ffmpeg_codec_open( pjmedia_vid_codec *codec, 
-				      pjmedia_vid_codec_param *attr )
-{
-    ffmpeg_private *ff;
-    pj_status_t status;
-    pj_mutex_t *ff_mutex;
-
-    PJ_ASSERT_RETURN(codec && attr, PJ_EINVAL);
-    ff = (ffmpeg_private*)codec->codec_data;
-
-    pj_memcpy(&ff->param, attr, sizeof(*attr));
-
-    /* Normalize encoding MTU in codec param */
-    if (attr->enc_mtu > PJMEDIA_MAX_VID_PAYLOAD_SIZE)
-	attr->enc_mtu = PJMEDIA_MAX_VID_PAYLOAD_SIZE;
-
-    /* Open the codec */
-    ff_mutex = ((struct ffmpeg_factory*)codec->factory)->mutex;
-    status = open_ffmpeg_codec(ff, ff_mutex);
-    if (status != PJ_SUCCESS)
-        goto on_error;
-
-    /* Init format info and apply-param of decoder */
-    ff->dec_vfi = pjmedia_get_video_format_info(NULL, ff->param.dec_fmt.id);
-    if (!ff->dec_vfi) {
-        status = PJ_EINVAL;
-        goto on_error;
-    }
-    pj_bzero(&ff->dec_vafp, sizeof(ff->dec_vafp));
-    ff->dec_vafp.size = ff->param.dec_fmt.det.vid.size;
-    ff->dec_vafp.buffer = NULL;
-    status = (*ff->dec_vfi->apply_fmt)(ff->dec_vfi, &ff->dec_vafp);
-    if (status != PJ_SUCCESS) {
-        goto on_error;
-    }
-
-    /* Init format info and apply-param of encoder */
-    ff->enc_vfi = pjmedia_get_video_format_info(NULL, ff->param.dec_fmt.id);
-    if (!ff->enc_vfi) {
-        status = PJ_EINVAL;
-        goto on_error;
-    }
-    pj_bzero(&ff->enc_vafp, sizeof(ff->enc_vafp));
-    ff->enc_vafp.size = ff->param.enc_fmt.det.vid.size;
-    ff->enc_vafp.buffer = NULL;
-    status = (*ff->enc_vfi->apply_fmt)(ff->enc_vfi, &ff->enc_vafp);
-    if (status != PJ_SUCCESS) {
-        goto on_error;
-    }
-
-    /* Alloc buffers if needed */
-    ff->whole = (ff->param.packing == PJMEDIA_VID_PACKING_WHOLE);
-    if (!ff->whole) {
-	ff->enc_buf_size = ff->enc_vafp.framebytes;
-	ff->enc_buf = pj_pool_alloc(ff->pool, ff->enc_buf_size);
-
-	ff->dec_buf_size = ff->dec_vafp.framebytes;
-	ff->dec_buf = pj_pool_alloc(ff->pool, ff->dec_buf_size);
-    }
-
-    /* Update codec attributes, e.g: encoding format may be changed by
-     * SDP fmtp negotiation.
-     */
-    pj_memcpy(attr, &ff->param, sizeof(*attr));
-
-    return PJ_SUCCESS;
-
-on_error:
-    ffmpeg_codec_close(codec);
-    return status;
-}
-
-/*
- * Close codec.
- */
-static pj_status_t ffmpeg_codec_close( pjmedia_vid_codec *codec )
-{
-    ffmpeg_private *ff;
-    pj_mutex_t *ff_mutex;
-
-    PJ_ASSERT_RETURN(codec, PJ_EINVAL);
-    ff = (ffmpeg_private*)codec->codec_data;
-    ff_mutex = ((struct ffmpeg_factory*)codec->factory)->mutex;
-
-    pj_mutex_lock(ff_mutex);
-    if (ff->enc_ctx) {
-        avcodec_close(ff->enc_ctx);
-        av_free(ff->enc_ctx);
-    }
-    if (ff->dec_ctx && ff->dec_ctx!=ff->enc_ctx) {
-        avcodec_close(ff->dec_ctx);
-        av_free(ff->dec_ctx);
-    }
-    ff->enc_ctx = NULL;
-    ff->dec_ctx = NULL;
-    pj_mutex_unlock(ff_mutex);
-
-    return PJ_SUCCESS;
-}
-
-
-/*
- * Modify codec settings.
- */
-static pj_status_t  ffmpeg_codec_modify( pjmedia_vid_codec *codec, 
-				         const pjmedia_vid_codec_param *attr)
-{
-    ffmpeg_private *ff = (ffmpeg_private*)codec->codec_data;
-
-    PJ_UNUSED_ARG(attr);
-    PJ_UNUSED_ARG(ff);
-
-    return PJ_ENOTSUP;
-}
-
-static pj_status_t  ffmpeg_codec_get_param(pjmedia_vid_codec *codec,
-					   pjmedia_vid_codec_param *param)
-{
-    ffmpeg_private *ff;
-
-    PJ_ASSERT_RETURN(codec && param, PJ_EINVAL);
-
-    ff = (ffmpeg_private*)codec->codec_data;
-    pj_memcpy(param, &ff->param, sizeof(*param));
-
-    return PJ_SUCCESS;
-}
-
-
-static pj_status_t  ffmpeg_packetize ( pjmedia_vid_codec *codec,
-                                       pj_uint8_t *bits,
-                                       pj_size_t bits_len,
-                                       unsigned *bits_pos,
-                                       const pj_uint8_t **payload,
-                                       pj_size_t *payload_len)
-{
-    ffmpeg_private *ff = (ffmpeg_private*)codec->codec_data;
-
-    if (ff->desc->packetize) {
-	return (*ff->desc->packetize)(ff, bits, bits_len, bits_pos,
-                                      payload, payload_len);
-    }
-
-    return PJ_ENOTSUP;
-}
-
-static pj_status_t  ffmpeg_unpacketize(pjmedia_vid_codec *codec,
-                                       const pj_uint8_t *payload,
-                                       pj_size_t   payload_len,
-                                       pj_uint8_t *bits,
-                                       pj_size_t   bits_len,
-				       unsigned   *bits_pos)
-{
-    ffmpeg_private *ff = (ffmpeg_private*)codec->codec_data;
-
-    if (ff->desc->unpacketize) {
-        return (*ff->desc->unpacketize)(ff, payload, payload_len,
-                                        bits, bits_len, bits_pos);
-    }
-    
-    return PJ_ENOTSUP;
-}
-
-
-/*
- * Encode frames.
- */
-static pj_status_t ffmpeg_codec_encode_whole(pjmedia_vid_codec *codec,
-					     const pjmedia_vid_encode_opt *opt,
-					     const pjmedia_frame *input,
-					     unsigned output_buf_len,
-					     pjmedia_frame *output)
-{
-    ffmpeg_private *ff = (ffmpeg_private*)codec->codec_data;
-    pj_uint8_t *p = (pj_uint8_t*)input->buf;
-    AVFrame avframe;
-    pj_uint8_t *out_buf = (pj_uint8_t*)output->buf;
-    int out_buf_len = output_buf_len;
-    int err;
-    //AVRational src_timebase;
-    /* For some reasons (e.g: SSE/MMX usage), the avcodec_encode_video() must
-     * have stack aligned to 16 bytes. Let's try to be safe by preparing the
-     * 16-bytes aligned stack here, in case it's not managed by the ffmpeg.
-     */
-    PJ_ALIGN_DATA(pj_uint32_t i[4], 16);
-
-    if ((long)i & 0xF) {
-	PJ_LOG(2,(THIS_FILE, "Stack alignment fails"));
-    }
-
-    /* Check if encoder has been opened */
-    PJ_ASSERT_RETURN(ff->enc_ctx, PJ_EINVALIDOP);
-
-    avcodec_get_frame_defaults(&avframe);
-
-    // Let ffmpeg manage the timestamps
-    /*
-    src_timebase.num = 1;
-    src_timebase.den = ff->desc->info.clock_rate;
-    avframe.pts = av_rescale_q(input->timestamp.u64, src_timebase,
-			       ff->enc_ctx->time_base);
-    */
-    
-    for (i[0] = 0; i[0] < ff->enc_vfi->plane_cnt; ++i[0]) {
-        avframe.data[i[0]] = p;
-        avframe.linesize[i[0]] = ff->enc_vafp.strides[i[0]];
-        p += ff->enc_vafp.plane_bytes[i[0]];
-    }
-
-    /* Force keyframe */
-    if (opt && opt->force_keyframe) {
-#if LIBAVCODEC_VER_AT_LEAST(53,20)
-	avframe.pict_type = AV_PICTURE_TYPE_I;
-#else
-	avframe.pict_type = FF_I_TYPE;
-#endif
-    }
-
-    err = avcodec_encode_video(ff->enc_ctx, out_buf, out_buf_len, &avframe);
-    if (err < 0) {
-        print_ffmpeg_err(err);
-        return PJMEDIA_CODEC_EFAILED;
-    } else {
-        output->size = err;
-	output->bit_info = 0;
-	if (ff->enc_ctx->coded_frame->key_frame)
-	    output->bit_info |= PJMEDIA_VID_FRM_KEYFRAME;
-    }
-
-    return PJ_SUCCESS;
-}
-
-static pj_status_t ffmpeg_codec_encode_begin(pjmedia_vid_codec *codec,
-					     const pjmedia_vid_encode_opt *opt,
-					     const pjmedia_frame *input,
-					     unsigned out_size,
-					     pjmedia_frame *output,
-					     pj_bool_t *has_more)
-{
-    ffmpeg_private *ff = (ffmpeg_private*)codec->codec_data;
-    pj_status_t status;
-
-    *has_more = PJ_FALSE;
-
-    if (ff->whole) {
-	status = ffmpeg_codec_encode_whole(codec, opt, input, out_size,
-					   output);
-    } else {
-	pjmedia_frame whole_frm;
-        const pj_uint8_t *payload;
-        pj_size_t payload_len;
-
-	pj_bzero(&whole_frm, sizeof(whole_frm));
-	whole_frm.buf = ff->enc_buf;
-	whole_frm.size = ff->enc_buf_size;
-	status = ffmpeg_codec_encode_whole(codec, opt, input,
-	                                   whole_frm.size, &whole_frm);
-	if (status != PJ_SUCCESS)
-	    return status;
-
-	ff->enc_buf_is_keyframe = (whole_frm.bit_info & 
-				   PJMEDIA_VID_FRM_KEYFRAME);
-	ff->enc_frame_len = (unsigned)whole_frm.size;
-	ff->enc_processed = 0;
-        status = ffmpeg_packetize(codec, (pj_uint8_t*)whole_frm.buf,
-                                  whole_frm.size, &ff->enc_processed,
-				  &payload, &payload_len);
-        if (status != PJ_SUCCESS)
-            return status;
-
-        if (out_size < payload_len)
-            return PJMEDIA_CODEC_EFRMTOOSHORT;
-
-        output->type = PJMEDIA_FRAME_TYPE_VIDEO;
-        pj_memcpy(output->buf, payload, payload_len);
-        output->size = payload_len;
-
-	if (ff->enc_buf_is_keyframe)
-	    output->bit_info |= PJMEDIA_VID_FRM_KEYFRAME;
-
-        *has_more = (ff->enc_processed < ff->enc_frame_len);
-    }
-
-    return status;
-}
-
-static pj_status_t ffmpeg_codec_encode_more(pjmedia_vid_codec *codec,
-					    unsigned out_size,
-					    pjmedia_frame *output,
-					    pj_bool_t *has_more)
-{
-    ffmpeg_private *ff = (ffmpeg_private*)codec->codec_data;
-    const pj_uint8_t *payload;
-    pj_size_t payload_len;
-    pj_status_t status;
-
-    *has_more = PJ_FALSE;
-
-    if (ff->enc_processed >= ff->enc_frame_len) {
-	/* No more frame */
-	return PJ_EEOF;
-    }
-
-    status = ffmpeg_packetize(codec, (pj_uint8_t*)ff->enc_buf,
-                              ff->enc_frame_len, &ff->enc_processed,
-                              &payload, &payload_len);
-    if (status != PJ_SUCCESS)
-        return status;
-
-    if (out_size < payload_len)
-        return PJMEDIA_CODEC_EFRMTOOSHORT;
-
-    output->type = PJMEDIA_FRAME_TYPE_VIDEO;
-    pj_memcpy(output->buf, payload, payload_len);
-    output->size = payload_len;
-
-    if (ff->enc_buf_is_keyframe)
-	output->bit_info |= PJMEDIA_VID_FRM_KEYFRAME;
-
-    *has_more = (ff->enc_processed < ff->enc_frame_len);
-
-    return PJ_SUCCESS;
-}
-
-
-static pj_status_t check_decode_result(pjmedia_vid_codec *codec,
-				       const pj_timestamp *ts,
-				       pj_bool_t got_keyframe)
-{
-    ffmpeg_private *ff = (ffmpeg_private*)codec->codec_data;
-    pjmedia_video_apply_fmt_param *vafp = &ff->dec_vafp;
-    pjmedia_event event;
-
-    /* Check for format change.
-     * Decoder output format is set by libavcodec, in case it is different
-     * to the configured param.
-     */
-    if (ff->dec_ctx->pix_fmt != ff->expected_dec_fmt ||
-	ff->dec_ctx->width != (int)vafp->size.w ||
-	ff->dec_ctx->height != (int)vafp->size.h)
-    {
-	pjmedia_format_id new_fmt_id;
-	pj_status_t status;
-
-	/* Get current raw format id from ffmpeg decoder context */
-	status = PixelFormat_to_pjmedia_format_id(ff->dec_ctx->pix_fmt, 
-						  &new_fmt_id);
-	if (status != PJ_SUCCESS)
-	    return status;
-
-	/* Update decoder format in param */
-		ff->param.dec_fmt.id = new_fmt_id;
-	ff->param.dec_fmt.det.vid.size.w = ff->dec_ctx->width;
-	ff->param.dec_fmt.det.vid.size.h = ff->dec_ctx->height;
-	ff->expected_dec_fmt = ff->dec_ctx->pix_fmt;
-
-	/* Re-init format info and apply-param of decoder */
-	ff->dec_vfi = pjmedia_get_video_format_info(NULL, ff->param.dec_fmt.id);
-	if (!ff->dec_vfi)
-	    return PJ_ENOTSUP;
-	pj_bzero(&ff->dec_vafp, sizeof(ff->dec_vafp));
-	ff->dec_vafp.size = ff->param.dec_fmt.det.vid.size;
-	ff->dec_vafp.buffer = NULL;
-	status = (*ff->dec_vfi->apply_fmt)(ff->dec_vfi, &ff->dec_vafp);
-	if (status != PJ_SUCCESS)
-	    return status;
-
-	/* Realloc buffer if necessary */
-	if (ff->dec_vafp.framebytes > ff->dec_buf_size) {
-	    PJ_LOG(5,(THIS_FILE, "Reallocating decoding buffer %u --> %u",
-		       (unsigned)ff->dec_buf_size,
-		       (unsigned)ff->dec_vafp.framebytes));
-	    ff->dec_buf_size = ff->dec_vafp.framebytes;
-	    ff->dec_buf = pj_pool_alloc(ff->pool, ff->dec_buf_size);
-	}
-
-	/* Broadcast format changed event */
-	pjmedia_event_init(&event, PJMEDIA_EVENT_FMT_CHANGED, ts, codec);
-	event.data.fmt_changed.dir = PJMEDIA_DIR_DECODING;
-	pj_memcpy(&event.data.fmt_changed.new_fmt, &ff->param.dec_fmt,
-		  sizeof(ff->param.dec_fmt));
-	pjmedia_event_publish(NULL, codec, &event, 0);
-    }
-
-    /* Check for missing/found keyframe */
-    if (got_keyframe) {
-	pj_get_timestamp(&ff->last_dec_keyframe_ts);
-
-	/* Broadcast keyframe event */
-        pjmedia_event_init(&event, PJMEDIA_EVENT_KEYFRAME_FOUND, ts, codec);
-        pjmedia_event_publish(NULL, codec, &event, 0);
-    } else if (ff->last_dec_keyframe_ts.u64 == 0) {
-	/* Broadcast missing keyframe event */
-	pjmedia_event_init(&event, PJMEDIA_EVENT_KEYFRAME_MISSING, ts, codec);
-	pjmedia_event_publish(NULL, codec, &event, 0);
-    }
-
-    return PJ_SUCCESS;
-}
-
-/*
- * Decode frame.
- */
-static pj_status_t ffmpeg_codec_decode_whole(pjmedia_vid_codec *codec,
-					     const pjmedia_frame *input,
-					     unsigned output_buf_len,
-					     pjmedia_frame *output)
-{
-    ffmpeg_private *ff = (ffmpeg_private*)codec->codec_data;
-    AVFrame avframe;
-    AVPacket avpacket;
-    int err, got_picture;
-
-    /* Check if decoder has been opened */
-    PJ_ASSERT_RETURN(ff->dec_ctx, PJ_EINVALIDOP);
-
-    /* Reset output frame bit info */
-    output->bit_info = 0;
-
-    /* Validate output buffer size */
-    // Do this validation later after getting decoding result, where the real
-    // decoded size will be assured.
-    //if (ff->dec_vafp.framebytes > output_buf_len)
-	//return PJ_ETOOSMALL;
-
-    /* Init frame to receive the decoded data, the ffmpeg codec context will
-     * automatically provide the decoded buffer (single buffer used for the
-     * whole decoding session, and seems to be freed when the codec context
-     * closed).
-     */
-    avcodec_get_frame_defaults(&avframe);
-
-    /* Init packet, the container of the encoded data */
-    av_init_packet(&avpacket);
-    avpacket.data = (pj_uint8_t*)input->buf;
-    avpacket.size = input->size;
-
-    /* ffmpeg warns:
-     * - input buffer padding, at least FF_INPUT_BUFFER_PADDING_SIZE
-     * - null terminated
-     * Normally, encoded buffer is allocated more than needed, so lets just
-     * bzero the input buffer end/pad, hope it will be just fine.
-     */
-    pj_bzero(avpacket.data+avpacket.size, FF_INPUT_BUFFER_PADDING_SIZE);
-
-    output->bit_info = 0;
-    output->timestamp = input->timestamp;
-
-#if LIBAVCODEC_VER_AT_LEAST(52,72)
-    //avpacket.flags = AV_PKT_FLAG_KEY;
-#else
-    avpacket.flags = 0;
-#endif
-
-#if LIBAVCODEC_VER_AT_LEAST(52,72)
-    err = avcodec_decode_video2(ff->dec_ctx, &avframe, 
-                                &got_picture, &avpacket);
-#else
-    err = avcodec_decode_video(ff->dec_ctx, &avframe,
-                               &got_picture, avpacket.data, avpacket.size);
-#endif
-    if (err < 0) {
-	pjmedia_event event;
-
-	output->type = PJMEDIA_FRAME_TYPE_NONE;
-	output->size = 0;
-        print_ffmpeg_err(err);
-
-	/* Broadcast missing keyframe event */
-	pjmedia_event_init(&event, PJMEDIA_EVENT_KEYFRAME_MISSING,
-			   &input->timestamp, codec);
-	pjmedia_event_publish(NULL, codec, &event, 0);
-
-	return PJMEDIA_CODEC_EBADBITSTREAM;
-    } else if (got_picture) {
-        pjmedia_video_apply_fmt_param *vafp = &ff->dec_vafp;
-        pj_uint8_t *q = (pj_uint8_t*)output->buf;
-	unsigned i;
-	pj_status_t status;
-
-	/* Check decoding result, e.g: see if the format got changed,
-	 * keyframe found/missing.
-	 */
-	status = check_decode_result(codec, &input->timestamp,
-				     avframe.key_frame);
-	if (status != PJ_SUCCESS)
-	    return status;
-
-	/* Check provided buffer size */
-	if (vafp->framebytes > output_buf_len)
-	    return PJ_ETOOSMALL;
-
-	/* Get the decoded data */
-	for (i = 0; i < ff->dec_vfi->plane_cnt; ++i) {
-	    pj_uint8_t *p = avframe.data[i];
-
-	    /* The decoded data may contain padding */
-	    if (avframe.linesize[i]!=vafp->strides[i]) {
-		/* Padding exists, copy line by line */
-		pj_uint8_t *q_end;
-                    
-		q_end = q+vafp->plane_bytes[i];
-		while(q < q_end) {
-		    pj_memcpy(q, p, vafp->strides[i]);
-		    q += vafp->strides[i];
-		    p += avframe.linesize[i];
-		}
-	    } else {
-		/* No padding, copy the whole plane */
-		pj_memcpy(q, p, vafp->plane_bytes[i]);
-		q += vafp->plane_bytes[i];
-	    }
-	}
-
-	output->type = PJMEDIA_FRAME_TYPE_VIDEO;
-        output->size = vafp->framebytes;
-    } else {
-	output->type = PJMEDIA_FRAME_TYPE_NONE;
-	output->size = 0;
-    }
-    
-    return PJ_SUCCESS;
-}
-
-static pj_status_t ffmpeg_codec_decode( pjmedia_vid_codec *codec,
-					pj_size_t pkt_count,
-					pjmedia_frame packets[],
-					unsigned out_size,
-					pjmedia_frame *output)
-{
-    ffmpeg_private *ff = (ffmpeg_private*)codec->codec_data;
-    pj_status_t status;
-
-    PJ_ASSERT_RETURN(codec && pkt_count > 0 && packets && output,
-                     PJ_EINVAL);
-
-    if (ff->whole) {
-	pj_assert(pkt_count==1);
-	return ffmpeg_codec_decode_whole(codec, &packets[0], out_size, output);
-    } else {
-	pjmedia_frame whole_frm;
-	unsigned whole_len = 0;
-	unsigned i;
-
-	for (i=0; i<pkt_count; ++i) {
-	    if (whole_len + packets[i].size > ff->dec_buf_size) {
-		PJ_LOG(5,(THIS_FILE, "Decoding buffer overflow"));
-		break;
-	    }
-
-	    status = ffmpeg_unpacketize(codec, packets[i].buf, packets[i].size,
-	                                ff->dec_buf, ff->dec_buf_size,
-	                                &whole_len);
-	    if (status != PJ_SUCCESS) {
-		PJ_PERROR(5,(THIS_FILE, status, "Unpacketize error"));
-		continue;
-	    }
-	}
-
-	whole_frm.buf = ff->dec_buf;
-	whole_frm.size = whole_len;
-	whole_frm.timestamp = output->timestamp = packets[i].timestamp;
-	whole_frm.bit_info = 0;
-
-	return ffmpeg_codec_decode_whole(codec, &whole_frm, out_size, output);
-    }
-}
-
-
-#ifdef _MSC_VER
-#   pragma comment( lib, "avcodec.lib")
-#endif
-
-#endif	/* PJMEDIA_HAS_FFMPEG_CODEC */
-