gstreamer/ext/libav/gstavvidenc.c
2015-03-10 10:17:45 +01:00

988 lines
30 KiB
C

/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, 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>
#include <libavcodec/avcodec.h>
#include <gst/gst.h>
#include <gst/video/gstvideometa.h>
#include "gstav.h"
#include "gstavcodecmap.h"
#include "gstavutils.h"
#include "gstavvidenc.h"
#include "gstavcfg.h"
#define DEFAULT_VIDEO_BITRATE 300000 /* in bps */
#define DEFAULT_VIDEO_GOP_SIZE 15
#define DEFAULT_WIDTH 352
#define DEFAULT_HEIGHT 288
#define VIDEO_BUFFER_SIZE (1024*1024)
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
PROP_0,
PROP_BIT_RATE,
PROP_GOP_SIZE,
PROP_ME_METHOD,
PROP_BUFSIZE,
PROP_RTP_PAYLOAD_SIZE,
PROP_MAX_THREADS,
PROP_COMPLIANCE,
PROP_CFG_BASE,
};
#define GST_TYPE_ME_METHOD (gst_ffmpegvidenc_me_method_get_type())
static GType
gst_ffmpegvidenc_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 ("GstLibAVVidEncMeMethod", 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_ffmpegvidenc_class_init (GstFFMpegVidEncClass * klass);
static void gst_ffmpegvidenc_base_init (GstFFMpegVidEncClass * klass);
static void gst_ffmpegvidenc_init (GstFFMpegVidEnc * ffmpegenc);
static void gst_ffmpegvidenc_finalize (GObject * object);
static gboolean gst_ffmpegvidenc_start (GstVideoEncoder * encoder);
static gboolean gst_ffmpegvidenc_stop (GstVideoEncoder * encoder);
static GstFlowReturn gst_ffmpegvidenc_finish (GstVideoEncoder * encoder);
static gboolean gst_ffmpegvidenc_set_format (GstVideoEncoder * encoder,
GstVideoCodecState * state);
static gboolean gst_ffmpegvidenc_propose_allocation (GstVideoEncoder * encoder,
GstQuery * query);
static gboolean gst_ffmpegvidenc_flush (GstVideoEncoder * encoder);
static GstCaps *gst_ffmpegvidenc_getcaps (GstVideoEncoder * encoder,
GstCaps * filter);
static GstFlowReturn gst_ffmpegvidenc_handle_frame (GstVideoEncoder * encoder,
GstVideoCodecFrame * frame);
static void gst_ffmpegvidenc_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_ffmpegvidenc_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
#define GST_FFENC_PARAMS_QDATA g_quark_from_static_string("avenc-params")
static GstElementClass *parent_class = NULL;
/*static guint gst_ffmpegvidenc_signals[LAST_SIGNAL] = { 0 }; */
static void
gst_ffmpegvidenc_base_init (GstFFMpegVidEncClass * klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
AVCodec *in_plugin;
GstPadTemplate *srctempl = NULL, *sinktempl = NULL;
GstCaps *srccaps = NULL, *sinkcaps = NULL;
gchar *longname, *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 ("libav %s encoder", in_plugin->long_name);
description = g_strdup_printf ("libav %s encoder", in_plugin->name);
gst_element_class_set_metadata (element_class, longname,
"Codec/Encoder/Video", description,
"Wim Taymans <wim.taymans@gmail.com>, "
"Ronald Bultje <rbultje@ronald.bitfreak.net>");
g_free (longname);
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_empty_simple ("unknown/unknown");
}
sinkcaps = gst_ffmpeg_codectype_to_video_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_empty_simple ("unknown/unknown");
}
/* 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;
return;
}
static void
gst_ffmpegvidenc_class_init (GstFFMpegVidEncClass * klass)
{
GObjectClass *gobject_class;
GstVideoEncoderClass *venc_class;
int caps;
gobject_class = (GObjectClass *) klass;
venc_class = (GstVideoEncoderClass *) klass;
parent_class = g_type_class_peek_parent (klass);
gobject_class->set_property = gst_ffmpegvidenc_set_property;
gobject_class->get_property = gst_ffmpegvidenc_get_property;
/* FIXME: could use -1 for a sensible per-codec default based on
* e.g. input resolution and framerate */
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_BIT_RATE,
g_param_spec_int ("bitrate", "Bit Rate",
"Target Video Bitrate", 0, G_MAXINT, DEFAULT_VIDEO_BITRATE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_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_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_ME_METHOD,
g_param_spec_enum ("me-method", "ME Method", "Motion Estimation Method",
GST_TYPE_ME_METHOD, ME_EPZS,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_BUFSIZE,
g_param_spec_int ("buffer-size", "Buffer Size",
"Size of the video buffers", 0, G_MAXINT, 0,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass),
PROP_RTP_PAYLOAD_SIZE, g_param_spec_int ("rtp-payload-size",
"RTP Payload Size", "Target GOB length", 0, G_MAXINT, 0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
caps = klass->in_plugin->capabilities;
if (caps & (CODEC_CAP_FRAME_THREADS | CODEC_CAP_SLICE_THREADS)) {
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_MAX_THREADS,
g_param_spec_int ("max-threads", "Maximum encode threads",
"Maximum number of worker threads to spawn. (0 = auto)",
0, G_MAXINT, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_COMPLIANCE,
g_param_spec_enum ("compliance", "Compliance",
"Adherence of the encoder to the specifications",
GST_TYPE_FFMPEG_COMPLIANCE, FFMPEG_DEFAULT_COMPLIANCE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/* register additional properties, possibly dependent on the exact CODEC */
gst_ffmpeg_cfg_install_property (klass, PROP_CFG_BASE);
venc_class->start = gst_ffmpegvidenc_start;
venc_class->stop = gst_ffmpegvidenc_stop;
venc_class->finish = gst_ffmpegvidenc_finish;
venc_class->handle_frame = gst_ffmpegvidenc_handle_frame;
venc_class->getcaps = gst_ffmpegvidenc_getcaps;
venc_class->set_format = gst_ffmpegvidenc_set_format;
venc_class->propose_allocation = gst_ffmpegvidenc_propose_allocation;
venc_class->flush = gst_ffmpegvidenc_flush;
gobject_class->finalize = gst_ffmpegvidenc_finalize;
}
static void
gst_ffmpegvidenc_init (GstFFMpegVidEnc * ffmpegenc)
{
GstFFMpegVidEncClass *klass =
(GstFFMpegVidEncClass *) G_OBJECT_GET_CLASS (ffmpegenc);
/* ffmpeg objects */
ffmpegenc->context = avcodec_alloc_context3 (klass->in_plugin);
ffmpegenc->picture = avcodec_alloc_frame ();
ffmpegenc->opened = FALSE;
ffmpegenc->file = NULL;
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->compliance = FFMPEG_DEFAULT_COMPLIANCE;
ffmpegenc->max_threads = 0;
ffmpegenc->lmin = 2;
ffmpegenc->lmax = 31;
ffmpegenc->max_key_interval = 0;
gst_ffmpeg_cfg_set_defaults (ffmpegenc);
}
static void
gst_ffmpegvidenc_finalize (GObject * object)
{
GstFFMpegVidEnc *ffmpegenc = (GstFFMpegVidEnc *) object;
gst_ffmpeg_cfg_finalize (ffmpegenc);
/* clean up remaining allocated data */
gst_ffmpeg_avcodec_close (ffmpegenc->context);
av_free (ffmpegenc->context);
avcodec_free_frame (&ffmpegenc->picture);
g_free (ffmpegenc->filename);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static GstCaps *
gst_ffmpegvidenc_getcaps (GstVideoEncoder * encoder, GstCaps * filter)
{
GstFFMpegVidEnc *ffmpegenc = (GstFFMpegVidEnc *) encoder;
GstCaps *caps = NULL;
GST_DEBUG_OBJECT (ffmpegenc, "getting caps");
caps = gst_video_encoder_proxy_getcaps (encoder, NULL, filter);
GST_DEBUG_OBJECT (ffmpegenc, "return caps %" GST_PTR_FORMAT, caps);
return caps;
}
static gboolean
gst_ffmpegvidenc_set_format (GstVideoEncoder * encoder,
GstVideoCodecState * state)
{
GstCaps *other_caps;
GstCaps *allowed_caps;
GstCaps *icaps;
GstVideoCodecState *output_format;
enum PixelFormat pix_fmt;
GstFFMpegVidEnc *ffmpegenc = (GstFFMpegVidEnc *) encoder;
GstFFMpegVidEncClass *oclass =
(GstFFMpegVidEncClass *) G_OBJECT_GET_CLASS (ffmpegenc);
/* close old session */
if (ffmpegenc->opened) {
gst_ffmpeg_avcodec_close (ffmpegenc->context);
ffmpegenc->opened = FALSE;
if (avcodec_get_context_defaults3 (ffmpegenc->context,
oclass->in_plugin) < 0) {
GST_DEBUG_OBJECT (ffmpegenc, "Failed to set context defaults");
return FALSE;
}
}
/* if we set it in _getcaps we should set it also in _link */
ffmpegenc->context->strict_std_compliance = ffmpegenc->compliance;
/* 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 %d, gop_size %d",
ffmpegenc->bitrate, ffmpegenc->gop_size);
if (ffmpegenc->max_threads == 0) {
if (!(oclass->in_plugin->capabilities & CODEC_CAP_AUTO_THREADS))
ffmpegenc->context->thread_count = gst_ffmpeg_auto_max_threads ();
else
ffmpegenc->context->thread_count = 0;
} else
ffmpegenc->context->thread_count = ffmpegenc->max_threads;
/* 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;
/* 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)
goto open_file_err;
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))
goto file_read_err;
break;
}
default:
break;
}
GST_DEBUG_OBJECT (ffmpegenc, "Extracting common video information");
/* fetch pix_fmt, fps, par, width, height... */
gst_ffmpeg_videoinfo_to_context (&state->info, ffmpegenc->context);
/* sanitize time base */
if (ffmpegenc->context->time_base.num <= 0
|| ffmpegenc->context->time_base.den <= 0)
goto insane_timebase;
if ((oclass->in_plugin->id == AV_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;
}
/* 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 (GST_VIDEO_ENCODER_SRC_PAD (encoder));
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_pad_get_pad_template_caps (GST_VIDEO_ENCODER_SRC_PAD (encoder));
}
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_caps_unref (allowed_caps);
goto unsupported_codec;
}
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);
goto unsupported_codec;
}
icaps = gst_caps_fixate (icaps);
GST_DEBUG_OBJECT (ffmpegenc, "codec flags 0x%08x", ffmpegenc->context->flags);
/* open codec */
if (gst_ffmpeg_avcodec_open (ffmpegenc->context, oclass->in_plugin) < 0)
goto open_codec_fail;
/* is the colourspace correct? */
if (pix_fmt != ffmpegenc->context->pix_fmt)
goto pix_fmt_err;
/* 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 (pix_fmt == AV_PIX_FMT_NONE)
goto bad_input_fmt;
/* second pass stats buffer no longer needed */
if (ffmpegenc->context->stats_in)
g_free (ffmpegenc->context->stats_in);
/* Store input state and set output state */
if (ffmpegenc->input_state)
gst_video_codec_state_unref (ffmpegenc->input_state);
ffmpegenc->input_state = gst_video_codec_state_ref (state);
output_format = gst_video_encoder_set_output_state (encoder, icaps, state);
gst_video_codec_state_unref (output_format);
/* success! */
ffmpegenc->opened = TRUE;
return TRUE;
/* ERRORS */
open_file_err:
{
GST_ELEMENT_ERROR (ffmpegenc, RESOURCE, OPEN_WRITE,
(("Could not open file \"%s\" for writing."), ffmpegenc->filename),
GST_ERROR_SYSTEM);
return FALSE;
}
file_read_err:
{
GST_ELEMENT_ERROR (ffmpegenc, RESOURCE, READ,
(("Could not get contents of file \"%s\"."), ffmpegenc->filename),
GST_ERROR_SYSTEM);
return FALSE;
}
insane_timebase:
{
GST_ERROR_OBJECT (ffmpegenc, "Rejecting time base %d/%d",
ffmpegenc->context->time_base.den, ffmpegenc->context->time_base.num);
goto cleanup_stats_in;
}
unsupported_codec:
{
GST_DEBUG ("Unsupported codec - no caps found");
goto cleanup_stats_in;
}
open_codec_fail:
{
GST_DEBUG_OBJECT (ffmpegenc, "avenc_%s: Failed to open libav codec",
oclass->in_plugin->name);
goto close_codec;
}
pix_fmt_err:
{
GST_DEBUG_OBJECT (ffmpegenc,
"avenc_%s: AV wants different colourspace (%d given, %d wanted)",
oclass->in_plugin->name, pix_fmt, ffmpegenc->context->pix_fmt);
goto close_codec;
}
bad_input_fmt:
{
GST_DEBUG_OBJECT (ffmpegenc, "avenc_%s: Failed to determine input format",
oclass->in_plugin->name);
goto close_codec;
}
close_codec:
{
gst_ffmpeg_avcodec_close (ffmpegenc->context);
if (avcodec_get_context_defaults3 (ffmpegenc->context,
oclass->in_plugin) < 0)
GST_DEBUG_OBJECT (ffmpegenc, "Failed to set context defaults");
goto cleanup_stats_in;
}
cleanup_stats_in:
{
if (ffmpegenc->context->stats_in)
g_free (ffmpegenc->context->stats_in);
return FALSE;
}
}
static gboolean
gst_ffmpegvidenc_propose_allocation (GstVideoEncoder * encoder,
GstQuery * query)
{
gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL);
return GST_VIDEO_ENCODER_CLASS (parent_class)->propose_allocation (encoder,
query);
}
static void
gst_ffmpegvidenc_free_avpacket (gpointer pkt)
{
av_packet_unref ((AVPacket *) pkt);
g_slice_free (AVPacket, pkt);
}
static GstFlowReturn
gst_ffmpegvidenc_handle_frame (GstVideoEncoder * encoder,
GstVideoCodecFrame * frame)
{
GstFFMpegVidEnc *ffmpegenc = (GstFFMpegVidEnc *) encoder;
GstBuffer *outbuf;
gint ret = 0, c;
GstVideoInfo *info = &ffmpegenc->input_state->info;
GstVideoFrame vframe;
AVPacket *pkt;
int have_data = 0;
if (GST_VIDEO_CODEC_FRAME_IS_FORCE_KEYFRAME (frame))
ffmpegenc->picture->pict_type = AV_PICTURE_TYPE_I;
if (!gst_video_frame_map (&vframe, info, frame->input_buffer, GST_MAP_READ)) {
GST_ERROR_OBJECT (encoder, "Failed to map input buffer");
return GST_FLOW_ERROR;
}
/* Fill avpicture */
for (c = 0; c < AV_NUM_DATA_POINTERS; c++) {
if (c < GST_VIDEO_INFO_N_COMPONENTS (info)) {
ffmpegenc->picture->data[c] = GST_VIDEO_FRAME_PLANE_DATA (&vframe, c);
ffmpegenc->picture->linesize[c] =
GST_VIDEO_FRAME_COMP_STRIDE (&vframe, c);
} else {
ffmpegenc->picture->data[c] = NULL;
ffmpegenc->picture->linesize[c] = 0;
}
}
ffmpegenc->picture->pts =
gst_ffmpeg_time_gst_to_ff (frame->pts /
ffmpegenc->context->ticks_per_frame, ffmpegenc->context->time_base);
have_data = 0;
pkt = g_slice_new0 (AVPacket);
ret =
avcodec_encode_video2 (ffmpegenc->context, pkt, ffmpegenc->picture,
&have_data);
gst_video_frame_unmap (&vframe);
if (ret < 0 || !have_data)
g_slice_free (AVPacket, pkt);
if (ret < 0)
goto encode_fail;
/* Encoder needs more data */
if (!have_data)
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_video_codec_frame_unref (frame);
/* Get oldest frame */
frame = gst_video_encoder_get_oldest_frame (encoder);
outbuf =
gst_buffer_new_wrapped_full (0, pkt->data, pkt->size, 0, pkt->size, pkt,
gst_ffmpegvidenc_free_avpacket);
frame->output_buffer = outbuf;
/* buggy codec may not set coded_frame */
if (ffmpegenc->context->coded_frame) {
if (ffmpegenc->context->coded_frame->key_frame)
GST_VIDEO_CODEC_FRAME_SET_SYNC_POINT (frame);
} else
GST_WARNING_OBJECT (ffmpegenc, "codec did not provide keyframe info");
/* Reset frame type */
if (ffmpegenc->picture->pict_type)
ffmpegenc->picture->pict_type = 0;
return gst_video_encoder_finish_frame (encoder, frame);
/* ERRORS */
encode_fail:
{
#ifndef GST_DISABLE_GST_DEBUG
GstFFMpegVidEncClass *oclass =
(GstFFMpegVidEncClass *) (G_OBJECT_GET_CLASS (ffmpegenc));
GST_ERROR_OBJECT (ffmpegenc,
"avenc_%s: failed to encode buffer", oclass->in_plugin->name);
#endif /* GST_DISABLE_GST_DEBUG */
/* avoid frame (and ts etc) piling up */
return gst_video_encoder_finish_frame (encoder, frame);
}
}
static GstFlowReturn
gst_ffmpegvidenc_flush_buffers (GstFFMpegVidEnc * ffmpegenc, gboolean send)
{
GstVideoCodecFrame *frame;
GstFlowReturn flow_ret = GST_FLOW_OK;
GstBuffer *outbuf;
gint ret;
AVPacket pkt;
int have_data = 0;
GST_DEBUG_OBJECT (ffmpegenc, "flushing buffers with sending %d", send);
/* no need to empty codec if there is none */
if (!ffmpegenc->opened)
goto done;
while ((frame =
gst_video_encoder_get_oldest_frame (GST_VIDEO_ENCODER (ffmpegenc)))) {
memset (&pkt, 0, sizeof (pkt));
have_data = 0;
ret = avcodec_encode_video2 (ffmpegenc->context, &pkt, NULL, &have_data);
if (ret < 0) { /* there should be something, notify and give up */
#ifndef GST_DISABLE_GST_DEBUG
GstFFMpegVidEncClass *oclass =
(GstFFMpegVidEncClass *) (G_OBJECT_GET_CLASS (ffmpegenc));
GST_WARNING_OBJECT (ffmpegenc,
"avenc_%s: failed to flush buffer", oclass->in_plugin->name);
#endif /* GST_DISABLE_GST_DEBUG */
gst_video_codec_frame_unref (frame);
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);
if (send && have_data) {
outbuf = gst_buffer_new_wrapped_full (0, pkt.data, pkt.size, 0, pkt.size,
pkt.data, av_free);
frame->output_buffer = outbuf;
if (ffmpegenc->context->coded_frame->key_frame)
GST_VIDEO_CODEC_FRAME_SET_SYNC_POINT (frame);
flow_ret =
gst_video_encoder_finish_frame (GST_VIDEO_ENCODER (ffmpegenc), frame);
} else {
/* no frame attached, so will be skipped and removed from frame list */
gst_video_encoder_finish_frame (GST_VIDEO_ENCODER (ffmpegenc), frame);
}
}
done:
return flow_ret;
}
static void
gst_ffmpegvidenc_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstFFMpegVidEnc *ffmpegenc;
/* Get a pointer of the right type. */
ffmpegenc = (GstFFMpegVidEnc *) (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 PROP_BIT_RATE:
ffmpegenc->bitrate = g_value_get_int (value);
break;
case PROP_GOP_SIZE:
ffmpegenc->gop_size = g_value_get_int (value);
break;
case PROP_ME_METHOD:
ffmpegenc->me_method = g_value_get_enum (value);
break;
case PROP_BUFSIZE:
break;
case PROP_RTP_PAYLOAD_SIZE:
ffmpegenc->rtp_payload_size = g_value_get_int (value);
break;
case PROP_COMPLIANCE:
ffmpegenc->compliance = g_value_get_enum (value);
break;
case PROP_MAX_THREADS:
ffmpegenc->max_threads = g_value_get_int (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_ffmpegvidenc_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstFFMpegVidEnc *ffmpegenc;
/* It's not null if we got it, but it might not be ours */
ffmpegenc = (GstFFMpegVidEnc *) (object);
switch (prop_id) {
case PROP_BIT_RATE:
g_value_set_int (value, ffmpegenc->bitrate);
break;
case PROP_GOP_SIZE:
g_value_set_int (value, ffmpegenc->gop_size);
break;
case PROP_ME_METHOD:
g_value_set_enum (value, ffmpegenc->me_method);
break;
case PROP_BUFSIZE:
g_value_set_int (value, ffmpegenc->buffer_size);
break;
case PROP_RTP_PAYLOAD_SIZE:
g_value_set_int (value, ffmpegenc->rtp_payload_size);
break;
case PROP_COMPLIANCE:
g_value_set_enum (value, ffmpegenc->compliance);
break;
case PROP_MAX_THREADS:
g_value_set_int (value, ffmpegenc->max_threads);
break;
default:
if (!gst_ffmpeg_cfg_get_property (object, value, pspec))
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
gst_ffmpegvidenc_flush (GstVideoEncoder * encoder)
{
GstFFMpegVidEnc *ffmpegenc = (GstFFMpegVidEnc *) encoder;
if (ffmpegenc->opened)
avcodec_flush_buffers (ffmpegenc->context);
return TRUE;
}
static gboolean
gst_ffmpegvidenc_start (GstVideoEncoder * encoder)
{
GstFFMpegVidEnc *ffmpegenc = (GstFFMpegVidEnc *) encoder;
GstFFMpegVidEncClass *oclass =
(GstFFMpegVidEncClass *) G_OBJECT_GET_CLASS (ffmpegenc);
/* close old session */
gst_ffmpeg_avcodec_close (ffmpegenc->context);
if (avcodec_get_context_defaults3 (ffmpegenc->context, oclass->in_plugin) < 0) {
GST_DEBUG_OBJECT (ffmpegenc, "Failed to set context defaults");
return FALSE;
}
return TRUE;
}
static gboolean
gst_ffmpegvidenc_stop (GstVideoEncoder * encoder)
{
GstFFMpegVidEnc *ffmpegenc = (GstFFMpegVidEnc *) encoder;
gst_ffmpegvidenc_flush_buffers (ffmpegenc, FALSE);
gst_ffmpeg_avcodec_close (ffmpegenc->context);
ffmpegenc->opened = FALSE;
if (ffmpegenc->file) {
fclose (ffmpegenc->file);
ffmpegenc->file = NULL;
}
if (ffmpegenc->input_state) {
gst_video_codec_state_unref (ffmpegenc->input_state);
ffmpegenc->input_state = NULL;
}
return TRUE;
}
static GstFlowReturn
gst_ffmpegvidenc_finish (GstVideoEncoder * encoder)
{
GstFFMpegVidEnc *ffmpegenc = (GstFFMpegVidEnc *) encoder;
return gst_ffmpegvidenc_flush_buffers (ffmpegenc, TRUE);
}
gboolean
gst_ffmpegvidenc_register (GstPlugin * plugin)
{
GTypeInfo typeinfo = {
sizeof (GstFFMpegVidEncClass),
(GBaseInitFunc) gst_ffmpegvidenc_base_init,
NULL,
(GClassInitFunc) gst_ffmpegvidenc_class_init,
NULL,
NULL,
sizeof (GstFFMpegVidEnc),
0,
(GInstanceInitFunc) gst_ffmpegvidenc_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;
/* Skip non-AV codecs */
if (in_plugin->type != AVMEDIA_TYPE_VIDEO)
goto next;
/* no quasi codecs, please */
if (in_plugin->id == AV_CODEC_ID_RAWVIDEO ||
in_plugin->id == AV_CODEC_ID_V210 ||
in_plugin->id == AV_CODEC_ID_V210X ||
in_plugin->id == AV_CODEC_ID_R210
|| in_plugin->id == AV_CODEC_ID_ZLIB) {
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 video encoders */
if (!av_codec_is_encoder (in_plugin)
|| in_plugin->type != AVMEDIA_TYPE_VIDEO)
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, "gif")) {
GST_LOG ("Ignoring encoder %s", in_plugin->name);
goto next;
}
/* construct the type */
type_name = g_strdup_printf ("avenc_%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_VIDEO_ENCODER, 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;
}