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ext/ffmpeg/: Added helper object to handle extra properties.

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Original commit message from CVS:
Patch by: Mark Nauwelaerts <manauw at skynet dot be>
* ext/ffmpeg/Makefile.am:
* ext/ffmpeg/gstffmpegcfg.c: (gst_ffmpeg_pass_get_type),
(gst_ffmpeg_lim_pass_get_type), (gst_ffmpeg_mb_decision_get_type),
(gst_ffmpeg_mb_cmp_get_type), (gst_ffmpeg_dct_algo_get_type),
(gst_ffmpeg_idct_algo_get_type), (gst_ffmpeg_quant_type_get_type),
(gst_ffmpeg_pre_me_get_type), (gst_ffmpeg_pred_method_get_type),
(gst_ffmpeg_flags_get_type), (gst_ffmpeg_cfg_init),
(gst_ffmpeg_cfg_codec_has_pspec),
(gst_ffmpeg_cfg_install_property), (gst_ffmpeg_cfg_set_property),
(gst_ffmpeg_cfg_get_property), (gst_ffmpeg_cfg_set_defaults),
(gst_ffmpeg_cfg_fill_context):
* ext/ffmpeg/gstffmpegcfg.h:
Added helper object to handle extra properties.
* ext/ffmpeg/gstffmpegenc.c: (gst_ffmpegenc_class_init),
(gst_ffmpegenc_init), (gst_ffmpegenc_dispose),
(gst_ffmpegenc_getcaps), (gst_ffmpegenc_setcaps),
(gst_ffmpegenc_chain_video), (gst_ffmpegenc_chain_audio),
(gst_ffmpegenc_flush_buffers), (gst_ffmpegenc_event_video),
(gst_ffmpegenc_set_property), (gst_ffmpegenc_get_property),
(gst_ffmpegenc_change_state), (gst_ffmpegenc_register):
* ext/ffmpeg/gstffmpegenc.h:
Exposes (quite some of) the AVCodecContext configurable
settings, as well as some additional (though simple) logic for b-frame
delay handling.
Most of the properties are only enabled for mpeg4-like codecs.
Fixes #344583.
This commit is contained in:
Mark Nauwelaerts 2006-09-06 14:51:13 +00:00 committed by Wim Taymans
parent 774aca3a94
commit d3528950b9
6 changed files with 1449 additions and 90 deletions
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32
ChangeLog
View file

@ -1,3 +1,35 @@
2006-09-06 Wim Taymans <wim@fluendo.com>
Patch by: Mark Nauwelaerts <manauw at skynet dot be>
* ext/ffmpeg/Makefile.am:
* ext/ffmpeg/gstffmpegcfg.c: (gst_ffmpeg_pass_get_type),
(gst_ffmpeg_lim_pass_get_type), (gst_ffmpeg_mb_decision_get_type),
(gst_ffmpeg_mb_cmp_get_type), (gst_ffmpeg_dct_algo_get_type),
(gst_ffmpeg_idct_algo_get_type), (gst_ffmpeg_quant_type_get_type),
(gst_ffmpeg_pre_me_get_type), (gst_ffmpeg_pred_method_get_type),
(gst_ffmpeg_flags_get_type), (gst_ffmpeg_cfg_init),
(gst_ffmpeg_cfg_codec_has_pspec),
(gst_ffmpeg_cfg_install_property), (gst_ffmpeg_cfg_set_property),
(gst_ffmpeg_cfg_get_property), (gst_ffmpeg_cfg_set_defaults),
(gst_ffmpeg_cfg_fill_context):
* ext/ffmpeg/gstffmpegcfg.h:
Added helper object to handle extra properties.
* ext/ffmpeg/gstffmpegenc.c: (gst_ffmpegenc_class_init),
(gst_ffmpegenc_init), (gst_ffmpegenc_dispose),
(gst_ffmpegenc_getcaps), (gst_ffmpegenc_setcaps),
(gst_ffmpegenc_chain_video), (gst_ffmpegenc_chain_audio),
(gst_ffmpegenc_flush_buffers), (gst_ffmpegenc_event_video),
(gst_ffmpegenc_set_property), (gst_ffmpegenc_get_property),
(gst_ffmpegenc_change_state), (gst_ffmpegenc_register):
* ext/ffmpeg/gstffmpegenc.h:
Exposes (quite some of) the AVCodecContext configurable
settings, as well as some additional (though simple) logic for b-frame
delay handling.
Most of the properties are only enabled for mpeg4-like codecs.
Fixes #344583.
2006-09-05 Wim Taymans <wim@fluendo.com>
* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_chain):

5
ext/ffmpeg/Makefile.am
View file

@ -5,6 +5,7 @@ libgstffmpeg_la_SOURCES = gstffmpeg.c \
gstffmpegcodecmap.c \
gstffmpegenc.c \
gstffmpegdec.c \
gstffmpegcfg.c \
gstffmpegdemux.c \
gstffmpegdeinterlace.c \
gstffmpegscale.c
@ -21,4 +22,6 @@ libgstffmpeg_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
noinst_HEADERS = \
gstffmpeg.h \
gstffmpegcodecmap.h
gstffmpegcodecmap.h \
gstffmpegenc.h \
gstffmpegcfg.h

1031
ext/ffmpeg/gstffmpegcfg.c Normal file
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File diff suppressed because it is too large Load diff

42
ext/ffmpeg/gstffmpegcfg.h Normal file
View file

@ -0,0 +1,42 @@
/* GStreamer
* Copyright (C) <2006> Mark Nauwelaerts <manauw@skynet.be>
*
* 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.
*/
#ifndef __GST_FFMPEGCFG_H__
#define __GST_FFMPEGCFG_H__
G_BEGIN_DECLS
void gst_ffmpeg_cfg_init ();
void gst_ffmpeg_cfg_install_property (GstFFMpegEncClass * klass, guint base);
gboolean gst_ffmpeg_cfg_set_property (GObject * object,
const GValue * value, GParamSpec * pspec);
gboolean gst_ffmpeg_cfg_get_property (GObject * object,
GValue * value, GParamSpec * pspec);
void gst_ffmpeg_cfg_fill_context (GstFFMpegEnc * ffmpegenc, AVCodecContext * context);
void gst_ffmpeg_cfg_set_defaults (GstFFMpegEnc * ffmpegenc);
G_END_DECLS
#endif /* __GST_FFMPEGCFG_H__ */

328
ext/ffmpeg/gstffmpegenc.c
View file

@ -23,6 +23,10 @@
#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>
@ -34,64 +38,16 @@
#include "gstffmpeg.h"
#include "gstffmpegcodecmap.h"
#include "gstffmpegenc.h"
#include "gstffmpegcfg.h"
#define DEFAULT_VIDEO_BITRATE 300000 /* in bps */
#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
typedef struct _GstFFMpegEnc GstFFMpegEnc;
struct _GstFFMpegEnc
{
GstElement element;
/* We need to keep track of our pads, so we do so here. */
GstPad *srcpad;
GstPad *sinkpad;
AVCodecContext *context;
AVFrame *picture;
gboolean opened;
GstBuffer *cache;
/* cache */
gulong bitrate;
gint me_method;
gint gop_size;
gulong buffer_size;
gulong rtp_payload_size;
};
typedef struct _GstFFMpegEncClass GstFFMpegEncClass;
struct _GstFFMpegEncClass
{
GstElementClass parent_class;
AVCodec *in_plugin;
GstPadTemplate *srctempl, *sinktempl;
GstCaps *sinkcaps;
};
typedef struct
{
AVCodec *in_plugin;
GstCaps *srccaps, *sinkcaps;
} GstFFMpegEncClassParams;
#define GST_TYPE_FFMPEGENC \
(gst_ffmpegenc_get_type())
#define GST_FFMPEGENC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_FFMPEGENC,GstFFMpegEnc))
#define GST_FFMPEGENC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_FFMPEGENC,GstFFMpegEncClass))
#define GST_IS_FFMPEGENC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_FFMPEGENC))
#define GST_IS_FFMPEGENC_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_FFMPEGENC))
#define VIDEO_BUFFER_SIZE (1024*1024)
@ -108,8 +64,8 @@ enum
ARG_GOP_SIZE,
ARG_ME_METHOD,
ARG_BUFSIZE,
ARG_RTP_PAYLOAD_SIZE
/* FILL ME */
ARG_RTP_PAYLOAD_SIZE,
ARG_CFG_BASE
};
#define GST_TYPE_ME_METHOD (gst_ffmpegenc_me_method_get_type())
@ -142,9 +98,12 @@ static void gst_ffmpegenc_init (GstFFMpegEnc * ffmpegenc);
static void gst_ffmpegenc_dispose (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 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 void gst_ffmpegenc_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
@ -221,26 +180,30 @@ gst_ffmpegenc_class_init (GstFFMpegEncClass * klass)
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));
"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));
"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",
g_param_spec_enum ("me_method", "ME Method", "Motion Estimation Method",
GST_TYPE_ME_METHOD, ME_LOG, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_BUFSIZE,
g_param_spec_ulong ("buffer_size", "Buffer Size",
"Size of the video buffers", 0, G_MAXULONG, 0, G_PARAM_READWRITE));
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));
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));
"Target Audio Bitrate", 0, G_MAXULONG, DEFAULT_AUDIO_BITRATE,
G_PARAM_READWRITE));
}
gstelement_class->change_state = gst_ffmpegenc_change_state;
@ -266,13 +229,20 @@ gst_ffmpegenc_init (GstFFMpegEnc * ffmpegenc)
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);
ffmpegenc->bitrate = DEFAULT_VIDEO_BITRATE;
ffmpegenc->buffer_size = 512 * 1024;
ffmpegenc->gop_size = DEFAULT_VIDEO_GOP_SIZE;
ffmpegenc->rtp_payload_size = 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);
@ -298,6 +268,9 @@ gst_ffmpegenc_dispose (GObject * object)
av_free (ffmpegenc->context);
av_free (ffmpegenc->picture);
g_queue_free (ffmpegenc->delay);
g_free (ffmpegenc->filename);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
@ -336,12 +309,12 @@ gst_ffmpegenc_getcaps (GstPad * pad)
/* makes it silent */
ctx->strict_std_compliance = -1;
/* 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 */
/* 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
@ -411,10 +384,66 @@ gst_ffmpegenc_setcaps (GstPad * pad, GstCaps * caps)
ffmpegenc->context->rtp_payload_size = ffmpegenc->rtp_payload_size;
}
/* general properties */
ffmpegenc->context->qmin = 1;
ffmpegenc->context->qmax = 31;
ffmpegenc->context->max_qdiff = 15;
/* 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,
@ -426,19 +455,38 @@ gst_ffmpegenc_setcaps (GstPad * pad, GstCaps * caps)
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->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)",
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;
}
@ -450,8 +498,8 @@ gst_ffmpegenc_setcaps (GstPad * pad, GstCaps * 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));
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,
@ -480,7 +528,7 @@ gst_ffmpegenc_setcaps (GstPad * pad, GstCaps * caps)
newcaps =
gst_caps_new_full (gst_structure_copy (gst_caps_get_structure (icaps,
0)), NULL);
0)), NULL);
gst_caps_unref (icaps);
icaps = newcaps;
}
@ -517,17 +565,16 @@ gst_ffmpegenc_chain_video (GstPad * pad, GstBuffer * inbuf)
ffmpegenc->picture->pts =
gst_ffmpeg_time_gst_to_ff (GST_BUFFER_TIMESTAMP (inbuf),
ffmpegenc->context->time_base);
ffmpegenc->context->time_base);
outbuf = gst_buffer_new_and_alloc (ffmpegenc->buffer_size);
ret_size = avcodec_encode_video (ffmpegenc->context,
GST_BUFFER_DATA (outbuf),
GST_BUFFER_SIZE (outbuf), ffmpegenc->picture);
GST_BUFFER_DATA (outbuf), GST_BUFFER_SIZE (outbuf), ffmpegenc->picture);
if (ret_size < 0) {
#ifndef GST_DISABLE_GST_DEBUG
GstFFMpegEncClass *oclass =
(GstFFMpegEncClass *) (G_OBJECT_GET_CLASS (ffmpegenc));
(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 */
@ -536,6 +583,22 @@ gst_ffmpegenc_chain_video (GstPad * pad, GstBuffer * 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);
GST_BUFFER_SIZE (outbuf) = ret_size;
GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (inbuf);
GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (inbuf);
@ -616,8 +679,7 @@ gst_ffmpegenc_chain_audio (GstPad * pad, GstBuffer * inbuf)
outbuf = gst_buffer_new_and_alloc (GST_BUFFER_SIZE (subbuf));
ret_size = avcodec_encode_audio (ffmpegenc->context,
GST_BUFFER_DATA (outbuf),
GST_BUFFER_SIZE (outbuf), (const short int *)
GST_BUFFER_DATA (outbuf), GST_BUFFER_SIZE (outbuf), (const short int *)
GST_BUFFER_DATA (subbuf));
if (ret_size < 0) {
@ -642,6 +704,85 @@ gst_ffmpegenc_chain_audio (GstPad * pad, GstBuffer * inbuf)
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)) {
outbuf = gst_buffer_new_and_alloc (ffmpegenc->buffer_size);
ret_size = avcodec_encode_video (ffmpegenc->context,
GST_BUFFER_DATA (outbuf), GST_BUFFER_SIZE (outbuf), 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);
GST_BUFFER_SIZE (outbuf) = 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 */
default:
break;
}
return gst_pad_push_event (ffmpegenc->srcpad, event);
}
static void
gst_ffmpegenc_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
@ -669,7 +810,8 @@ gst_ffmpegenc_set_property (GObject * object,
ffmpegenc->rtp_payload_size = g_value_get_ulong (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
if (!gst_ffmpeg_cfg_set_property (object, value, pspec))
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
@ -701,7 +843,8 @@ gst_ffmpegenc_get_property (GObject * object,
g_value_set_ulong (value, ffmpegenc->rtp_payload_size);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
if (!gst_ffmpeg_cfg_get_property (object, value, pspec))
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
@ -721,6 +864,7 @@ gst_ffmpegenc_change_state (GstElement * element, GstStateChange 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;
@ -729,6 +873,10 @@ gst_ffmpegenc_change_state (GstElement * element, GstStateChange transition)
gst_buffer_unref (ffmpegenc->cache);
ffmpegenc->cache = NULL;
}
if (ffmpegenc->file) {
fclose (ffmpegenc->file);
ffmpegenc->file = NULL;
}
break;
default:
break;
@ -757,6 +905,9 @@ gst_ffmpegenc_register (GstPlugin * plugin)
enc_global_plugins = g_hash_table_new (NULL, NULL);
/* build global ffmpeg param/property info */
gst_ffmpeg_cfg_init ();
while (in_plugin) {
gchar *type_name;
GstCaps *srccaps, *sinkcaps;
@ -777,8 +928,7 @@ gst_ffmpegenc_register (GstPlugin * plugin)
/* name */
if (!gst_ffmpeg_get_codecid_longname (in_plugin->id)) {
g_warning ("Add encoder %s (%d) please",
in_plugin->name, in_plugin->id);
g_warning ("Add encoder %s (%d) please", in_plugin->name, in_plugin->id);
goto next;
}

101
ext/ffmpeg/gstffmpegenc.h Normal file
View file

@ -0,0 +1,101 @@
/* 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.
*/
/* First, include the header file for the plugin, to bring in the
* object definition and other useful things.
*/
#ifndef __GST_FFMPEGENC_H__
#define __GST_FFMPEGENC_H__
G_BEGIN_DECLS
typedef struct _GstFFMpegEnc GstFFMpegEnc;
struct _GstFFMpegEnc
{
GstElement element;
/* We need to keep track of our pads, so we do so here. */
GstPad *srcpad;
GstPad *sinkpad;
AVCodecContext *context;
AVFrame *picture;
gboolean opened;
GstBuffer *cache;
/* cache */
gulong bitrate;
gint me_method;
gint gop_size;
gulong buffer_size;
gulong rtp_payload_size;
/* settings with some special handling */
guint pass;
gfloat quantizer;
gchar *filename;
guint lmin;
guint lmax;
gint max_key_interval;
gboolean interlaced;
/* statistics file */
FILE *file;
/* for b-frame delay handling */
GQueue *delay;
/* other settings are copied over straight,
* include a context here, rather than copy-and-past it from avcodec.h */
AVCodecContext config;
};
typedef struct _GstFFMpegEncClass GstFFMpegEncClass;
struct _GstFFMpegEncClass
{
GstElementClass parent_class;
AVCodec *in_plugin;
GstPadTemplate *srctempl, *sinktempl;
GstCaps *sinkcaps;
};
typedef struct
{
AVCodec *in_plugin;
GstCaps *srccaps, *sinkcaps;
} GstFFMpegEncClassParams;
#define GST_TYPE_FFMPEGENC \
(gst_ffmpegenc_get_type())
#define GST_FFMPEGENC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_FFMPEGENC,GstFFMpegEnc))
#define GST_FFMPEGENC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_FFMPEGENC,GstFFMpegEncClass))
#define GST_IS_FFMPEGENC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_FFMPEGENC))
#define GST_IS_FFMPEGENC_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_FFMPEGENC))
G_END_DECLS
#endif /* __GST_FFMPEGENC_H__ */