/* GStreamer * Copyright (C) <1999> Erik Walthinsen * * 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 #include /* for stats file handling */ #include #include #include #include #include #include #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 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 , " "Ronald Bultje "); 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->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); GST_PAD_SET_ACCEPT_TEMPLATE (GST_VIDEO_ENCODER_SINK_PAD (ffmpegenc)); /* ffmpeg objects */ ffmpegenc->context = avcodec_alloc_context3 (klass->in_plugin); ffmpegenc->picture = av_frame_alloc (); 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 */ av_frame_free (&ffmpegenc->picture); gst_ffmpeg_avcodec_close (ffmpegenc->context); av_free (ffmpegenc->context); g_free (ffmpegenc->filename); G_OBJECT_CLASS (parent_class)->finalize (object); } 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; } /* 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 */ 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); /* Store some tags */ { GstTagList *tags = gst_tag_list_new_empty (); const gchar *codec; gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE, GST_TAG_NOMINAL_BITRATE, ffmpegenc->context->bit_rate, NULL); if ((codec = gst_ffmpeg_get_codecid_longname (ffmpegenc->context->codec_id))) gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE, GST_TAG_VIDEO_CODEC, codec, NULL); gst_video_encoder_merge_tags (encoder, tags, GST_TAG_MERGE_REPLACE); gst_tag_list_unref (tags); } /* 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: { 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); } typedef struct { GstBuffer *buffer; GstVideoFrame vframe; } BufferInfo; static void buffer_info_free (void *opaque, guint8 * data) { BufferInfo *info = opaque; gst_video_frame_unmap (&info->vframe); gst_buffer_unref (info->buffer); g_slice_free (BufferInfo, info); } 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; AVPacket *pkt; int have_data = 0; BufferInfo *buffer_info; if (ffmpegenc->interlaced) { 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 = GST_BUFFER_FLAG_IS_SET (frame->input_buffer, GST_VIDEO_BUFFER_FLAG_TFF); } if (GST_VIDEO_CODEC_FRAME_IS_FORCE_KEYFRAME (frame)) ffmpegenc->picture->pict_type = AV_PICTURE_TYPE_I; buffer_info = g_slice_new0 (BufferInfo); buffer_info->buffer = gst_buffer_ref (frame->input_buffer); if (!gst_video_frame_map (&buffer_info->vframe, info, frame->input_buffer, GST_MAP_READ)) { GST_ERROR_OBJECT (encoder, "Failed to map input buffer"); gst_buffer_unref (buffer_info->buffer); g_slice_free (BufferInfo, buffer_info); gst_video_codec_frame_unref (frame); return GST_FLOW_ERROR; } /* Fill avpicture */ ffmpegenc->picture->buf[0] = av_buffer_create (NULL, 0, buffer_info_free, buffer_info, 0); 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 (&buffer_info->vframe, c); ffmpegenc->picture->linesize[c] = GST_VIDEO_FRAME_COMP_STRIDE (&buffer_info->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); av_frame_unref (ffmpegenc->picture); if (ret < 0 || !have_data) g_slice_free (AVPacket, pkt); if (ret < 0) goto encode_fail; /* Encoder needs more data */ if (!have_data) { gst_video_codec_frame_unref (frame); 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 (GST_MEMORY_FLAG_READONLY, 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"); 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)))) { pkt = g_slice_new0 (AVPacket); 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 */ g_slice_free (AVPacket, pkt); 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 (GST_MEMORY_FLAG_READONLY, pkt->data, pkt->size, 0, pkt->size, pkt, gst_ffmpegvidenc_free_avpacket); 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; }