/* 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., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include /* for stats file handling */ #include #include #include #ifdef HAVE_FFMPEG_UNINSTALLED #include #else #include #endif #include #include "gstffmpeg.h" #include "gstffmpegcodecmap.h" #include "gstffmpegenc.h" #include "gstffmpegcfg.h" #define DEFAULT_VIDEO_BITRATE 300000 /* in bps */ #define DEFAULT_VIDEO_GOP_SIZE 15 #define DEFAULT_AUDIO_BITRATE 128000 #define DEFAULT_WIDTH 352 #define DEFAULT_HEIGHT 288 #define VIDEO_BUFFER_SIZE (1024*1024) enum { /* FILL ME */ LAST_SIGNAL }; enum { ARG_0, ARG_BIT_RATE, ARG_GOP_SIZE, ARG_ME_METHOD, ARG_BUFSIZE, ARG_RTP_PAYLOAD_SIZE, ARG_CFG_BASE }; #define GST_TYPE_ME_METHOD (gst_ffmpegenc_me_method_get_type()) static GType gst_ffmpegenc_me_method_get_type (void) { static GType ffmpegenc_me_method_type = 0; static GEnumValue ffmpegenc_me_methods[] = { {ME_ZERO, "0", "zero"}, {ME_FULL, "1", "full"}, {ME_LOG, "2", "logarithmic"}, {ME_PHODS, "3", "phods"}, {ME_EPZS, "4", "epzs"}, {ME_X1, "5", "x1"}, {0, NULL, NULL}, }; if (!ffmpegenc_me_method_type) { ffmpegenc_me_method_type = g_enum_register_static ("GstFFMpegEncMeMethod", ffmpegenc_me_methods); } return ffmpegenc_me_method_type; } static GHashTable *enc_global_plugins; /* A number of functon prototypes are given so we can refer to them later. */ static void gst_ffmpegenc_class_init (GstFFMpegEncClass * klass); static void gst_ffmpegenc_base_init (GstFFMpegEncClass * klass); static void gst_ffmpegenc_init (GstFFMpegEnc * ffmpegenc); static void gst_ffmpegenc_finalize (GObject * object); static gboolean gst_ffmpegenc_setcaps (GstPad * pad, GstCaps * caps); static GstCaps *gst_ffmpegenc_getcaps (GstPad * pad); static GstFlowReturn gst_ffmpegenc_chain_video (GstPad * pad, GstBuffer * buffer); static GstFlowReturn gst_ffmpegenc_chain_audio (GstPad * pad, GstBuffer * buffer); static gboolean gst_ffmpegenc_event_video (GstPad * pad, GstEvent * event); static void gst_ffmpegenc_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_ffmpegenc_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static GstStateChangeReturn gst_ffmpegenc_change_state (GstElement * element, GstStateChange transition); static GstElementClass *parent_class = NULL; /*static guint gst_ffmpegenc_signals[LAST_SIGNAL] = { 0 }; */ static void gst_ffmpegenc_base_init (GstFFMpegEncClass * klass) { GObjectClass *gobject_class = G_OBJECT_CLASS (klass); GstElementClass *element_class = GST_ELEMENT_CLASS (klass); GstFFMpegEncClassParams *params; GstElementDetails details; GstPadTemplate *srctempl, *sinktempl; params = g_hash_table_lookup (enc_global_plugins, GINT_TO_POINTER (G_OBJECT_CLASS_TYPE (gobject_class))); /* HACK: if we don't have a GType yet, our params are stored at position 0 */ if (!params) { params = g_hash_table_lookup (enc_global_plugins, GINT_TO_POINTER (0)); } g_assert (params); /* construct the element details struct */ details.longname = g_strdup_printf ("FFMPEG %s encoder", gst_ffmpeg_get_codecid_longname (params->in_plugin->id)); details.klass = g_strdup_printf ("Codec/Encoder/%s", (params->in_plugin->type == CODEC_TYPE_VIDEO) ? "Video" : "Audio"); details.description = g_strdup_printf ("FFMPEG %s encoder", params->in_plugin->name); details.author = "Wim Taymans , " "Ronald Bultje "; gst_element_class_set_details (element_class, &details); g_free (details.longname); g_free (details.klass); g_free (details.description); /* pad templates */ sinktempl = gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, params->sinkcaps); srctempl = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, params->srccaps); gst_element_class_add_pad_template (element_class, srctempl); gst_element_class_add_pad_template (element_class, sinktempl); klass->in_plugin = params->in_plugin; klass->srctempl = srctempl; klass->sinktempl = sinktempl; klass->sinkcaps = NULL; } static void gst_ffmpegenc_class_init (GstFFMpegEncClass * klass) { GObjectClass *gobject_class; GstElementClass *gstelement_class; gobject_class = (GObjectClass *) klass; gstelement_class = (GstElementClass *) klass; parent_class = g_type_class_peek_parent (klass); gobject_class->set_property = gst_ffmpegenc_set_property; gobject_class->get_property = gst_ffmpegenc_get_property; if (klass->in_plugin->type == CODEC_TYPE_VIDEO) { g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_BIT_RATE, g_param_spec_ulong ("bitrate", "Bit Rate", "Target Video Bitrate", 0, G_MAXULONG, DEFAULT_VIDEO_BITRATE, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_GOP_SIZE, g_param_spec_int ("gop_size", "GOP Size", "Number of frames within one GOP", 0, G_MAXINT, DEFAULT_VIDEO_GOP_SIZE, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_ME_METHOD, g_param_spec_enum ("me_method", "ME Method", "Motion Estimation Method", GST_TYPE_ME_METHOD, ME_EPZS, G_PARAM_READWRITE)); 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)); /* register additional properties, possibly dependent on the exact CODEC */ gst_ffmpeg_cfg_install_property (klass, ARG_CFG_BASE); } else if (klass->in_plugin->type == CODEC_TYPE_AUDIO) { g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_BIT_RATE, g_param_spec_ulong ("bitrate", "Bit Rate", "Target Audio Bitrate", 0, G_MAXULONG, DEFAULT_AUDIO_BITRATE, G_PARAM_READWRITE)); } gstelement_class->change_state = gst_ffmpegenc_change_state; gobject_class->finalize = gst_ffmpegenc_finalize; } static void gst_ffmpegenc_init (GstFFMpegEnc * ffmpegenc) { GstFFMpegEncClass *oclass = (GstFFMpegEncClass *) (G_OBJECT_GET_CLASS (ffmpegenc)); /* setup pads */ ffmpegenc->sinkpad = gst_pad_new_from_template (oclass->sinktempl, "sink"); gst_pad_set_setcaps_function (ffmpegenc->sinkpad, gst_ffmpegenc_setcaps); gst_pad_set_getcaps_function (ffmpegenc->sinkpad, gst_ffmpegenc_getcaps); ffmpegenc->srcpad = gst_pad_new_from_template (oclass->srctempl, "src"); gst_pad_use_fixed_caps (ffmpegenc->srcpad); /* ffmpeg objects */ ffmpegenc->context = avcodec_alloc_context (); ffmpegenc->picture = avcodec_alloc_frame (); ffmpegenc->opened = FALSE; ffmpegenc->file = NULL; ffmpegenc->delay = g_queue_new (); if (oclass->in_plugin->type == CODEC_TYPE_VIDEO) { gst_pad_set_chain_function (ffmpegenc->sinkpad, gst_ffmpegenc_chain_video); /* so we know when to flush the buffers on EOS */ gst_pad_set_event_function (ffmpegenc->sinkpad, gst_ffmpegenc_event_video); ffmpegenc->bitrate = DEFAULT_VIDEO_BITRATE; ffmpegenc->me_method = ME_EPZS; ffmpegenc->buffer_size = 512 * 1024; ffmpegenc->gop_size = DEFAULT_VIDEO_GOP_SIZE; ffmpegenc->rtp_payload_size = 0; ffmpegenc->lmin = 2; ffmpegenc->lmax = 31; ffmpegenc->max_key_interval = 0; gst_ffmpeg_cfg_set_defaults (ffmpegenc); } else if (oclass->in_plugin->type == CODEC_TYPE_AUDIO) { gst_pad_set_chain_function (ffmpegenc->sinkpad, gst_ffmpegenc_chain_audio); ffmpegenc->bitrate = DEFAULT_AUDIO_BITRATE; } gst_element_add_pad (GST_ELEMENT (ffmpegenc), ffmpegenc->sinkpad); gst_element_add_pad (GST_ELEMENT (ffmpegenc), ffmpegenc->srcpad); } static void gst_ffmpegenc_finalize (GObject * object) { GstFFMpegEnc *ffmpegenc = (GstFFMpegEnc *) object; /* close old session */ if (ffmpegenc->opened) { gst_ffmpeg_avcodec_close (ffmpegenc->context); ffmpegenc->opened = FALSE; } /* clean up remaining allocated data */ av_free (ffmpegenc->context); av_free (ffmpegenc->picture); g_queue_free (ffmpegenc->delay); g_free (ffmpegenc->filename); G_OBJECT_CLASS (parent_class)->finalize (object); } static GstCaps * gst_ffmpegenc_getcaps (GstPad * pad) { GstFFMpegEnc *ffmpegenc = (GstFFMpegEnc *) GST_PAD_PARENT (pad); GstFFMpegEncClass *oclass = (GstFFMpegEncClass *) G_OBJECT_GET_CLASS (ffmpegenc); AVCodecContext *ctx; enum PixelFormat pixfmt; GstCaps *caps = NULL; /* audio needs no special care */ if (oclass->in_plugin->type == CODEC_TYPE_AUDIO) { return gst_caps_copy (gst_pad_get_pad_template_caps (pad)); } /* cached */ if (oclass->sinkcaps) { return gst_caps_copy (oclass->sinkcaps); } /* create cache etc. */ ctx = avcodec_alloc_context (); if (!ctx) { return gst_caps_copy (gst_pad_get_pad_template_caps (pad)); } /* set some default properties */ ctx->width = DEFAULT_WIDTH; ctx->height = DEFAULT_HEIGHT; ctx->time_base.num = DEFAULT_FRAME_RATE_BASE; ctx->time_base.den = 25 * DEFAULT_FRAME_RATE_BASE; ctx->bit_rate = DEFAULT_VIDEO_BITRATE; /* 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 */ #ifndef GST_DISABLE_GST_DEBUG _shut_up_I_am_probing = TRUE; #endif for (pixfmt = 0; pixfmt < PIX_FMT_NB; pixfmt++) { GstCaps *tmpcaps; ctx->pix_fmt = pixfmt; if (gst_ffmpeg_avcodec_open (ctx, oclass->in_plugin) >= 0 && ctx->pix_fmt == pixfmt) { ctx->width = -1; if (!caps) caps = gst_caps_new_empty (); tmpcaps = gst_ffmpeg_codectype_to_caps (oclass->in_plugin->type, ctx); if (tmpcaps) gst_caps_append (caps, tmpcaps); else GST_LOG_OBJECT (ffmpegenc, "Couldn't get caps for oclass->in_plugin->name:%s", oclass->in_plugin->name); gst_ffmpeg_avcodec_close (ctx); } if (ctx->priv_data) gst_ffmpeg_avcodec_close (ctx); } av_free (ctx); #ifndef GST_DISABLE_GST_DEBUG _shut_up_I_am_probing = FALSE; #endif /* make sure we have something */ if (!caps) { return gst_caps_copy (gst_pad_get_pad_template_caps (pad)); } oclass->sinkcaps = gst_caps_copy (caps); return caps; } static gboolean gst_ffmpegenc_setcaps (GstPad * pad, GstCaps * caps) { GstCaps *other_caps; GstCaps *allowed_caps; GstCaps *icaps; enum PixelFormat pix_fmt; GstFFMpegEnc *ffmpegenc = (GstFFMpegEnc *) GST_PAD_PARENT (pad); GstFFMpegEncClass *oclass = (GstFFMpegEncClass *) G_OBJECT_GET_CLASS (ffmpegenc); /* close old session */ if (ffmpegenc->opened) { gst_ffmpeg_avcodec_close (ffmpegenc->context); ffmpegenc->opened = FALSE; } /* set defaults */ avcodec_get_context_defaults (ffmpegenc->context); /* if we set it in _getcaps we should set it also in _link */ ffmpegenc->context->strict_std_compliance = -1; /* user defined properties */ ffmpegenc->context->bit_rate = ffmpegenc->bitrate; ffmpegenc->context->bit_rate_tolerance = ffmpegenc->bitrate; ffmpegenc->context->gop_size = ffmpegenc->gop_size; ffmpegenc->context->me_method = ffmpegenc->me_method; GST_DEBUG_OBJECT (ffmpegenc, "Setting avcontext to bitrate %lu, gop_size %d", ffmpegenc->bitrate, ffmpegenc->gop_size); /* RTP payload used for GOB production (for Asterisk) */ if (ffmpegenc->rtp_payload_size) { ffmpegenc->context->rtp_mode = 1; ffmpegenc->context->rtp_payload_size = ffmpegenc->rtp_payload_size; } /* additional avcodec settings */ /* first fill in the majority by copying over */ gst_ffmpeg_cfg_fill_context (ffmpegenc, ffmpegenc->context); /* then handle some special cases */ ffmpegenc->context->lmin = (ffmpegenc->lmin * FF_QP2LAMBDA + 0.5); ffmpegenc->context->lmax = (ffmpegenc->lmax * FF_QP2LAMBDA + 0.5); if (ffmpegenc->interlaced) { ffmpegenc->context->flags |= CODEC_FLAG_INTERLACED_DCT | CODEC_FLAG_INTERLACED_ME; ffmpegenc->picture->interlaced_frame = TRUE; /* if this is not the case, a filter element should be used to swap fields */ ffmpegenc->picture->top_field_first = TRUE; } /* some other defaults */ ffmpegenc->context->rc_strategy = 2; ffmpegenc->context->b_frame_strategy = 0; ffmpegenc->context->coder_type = 0; ffmpegenc->context->context_model = 0; ffmpegenc->context->scenechange_threshold = 0; ffmpegenc->context->inter_threshold = 0; /* and last but not least the pass; CBR, 2-pass, etc */ ffmpegenc->context->flags |= ffmpegenc->pass; switch (ffmpegenc->pass) { /* some additional action depends on type of pass */ case CODEC_FLAG_QSCALE: ffmpegenc->context->global_quality = ffmpegenc->picture->quality = FF_QP2LAMBDA * ffmpegenc->quantizer; break; case CODEC_FLAG_PASS1: /* need to prepare a stats file */ /* we don't close when changing caps, fingers crossed */ if (!ffmpegenc->file) ffmpegenc->file = g_fopen (ffmpegenc->filename, "w"); if (!ffmpegenc->file) { GST_ELEMENT_ERROR (ffmpegenc, RESOURCE, OPEN_WRITE, (("Could not open file \"%s\" for writing."), ffmpegenc->filename), GST_ERROR_SYSTEM); return FALSE; } break; case CODEC_FLAG_PASS2: { /* need to read the whole stats file ! */ gsize size; if (!g_file_get_contents (ffmpegenc->filename, &ffmpegenc->context->stats_in, &size, NULL)) { GST_ELEMENT_ERROR (ffmpegenc, RESOURCE, READ, (("Could not get contents of file \"%s\"."), ffmpegenc->filename), GST_ERROR_SYSTEM); return FALSE; } break; } default: break; } /* fetch pix_fmt and so on */ gst_ffmpeg_caps_with_codectype (oclass->in_plugin->type, caps, ffmpegenc->context); if (!ffmpegenc->context->time_base.den) { ffmpegenc->context->time_base.den = 25; ffmpegenc->context->time_base.num = 1; } else if ((oclass->in_plugin->id == CODEC_ID_MPEG4) && (ffmpegenc->context->time_base.den > 65535)) { /* MPEG4 Standards do not support time_base denominator greater than * (1<<16) - 1 . We therefore scale them down. * Agreed, it will not be the exact framerate... but the difference * shouldn't be that noticeable */ ffmpegenc->context->time_base.num = (gint) gst_util_uint64_scale_int (ffmpegenc->context->time_base.num, 65535, ffmpegenc->context->time_base.den); ffmpegenc->context->time_base.den = 65535; GST_LOG_OBJECT (ffmpegenc, "MPEG4 : scaled down framerate to %d / %d", ffmpegenc->context->time_base.den, ffmpegenc->context->time_base.num); } pix_fmt = ffmpegenc->context->pix_fmt; /* max-key-interval may need the framerate set above */ if (ffmpegenc->max_key_interval) { AVCodecContext *ctx; /* override gop-size */ ctx = ffmpegenc->context; ctx->gop_size = (ffmpegenc->max_key_interval < 0) ? (-ffmpegenc->max_key_interval * (ctx->time_base.den / ctx->time_base.num)) : ffmpegenc->max_key_interval; } /* open codec */ if (gst_ffmpeg_avcodec_open (ffmpegenc->context, oclass->in_plugin) < 0) { if (ffmpegenc->context->priv_data) gst_ffmpeg_avcodec_close (ffmpegenc->context); if (ffmpegenc->context->stats_in) g_free (ffmpegenc->context->stats_in); GST_DEBUG_OBJECT (ffmpegenc, "ffenc_%s: Failed to open FFMPEG codec", oclass->in_plugin->name); return FALSE; } /* second pass stats buffer no longer needed */ if (ffmpegenc->context->stats_in) g_free (ffmpegenc->context->stats_in); /* is the colourspace correct? */ if (pix_fmt != ffmpegenc->context->pix_fmt) { gst_ffmpeg_avcodec_close (ffmpegenc->context); GST_DEBUG_OBJECT (ffmpegenc, "ffenc_%s: AV wants different colourspace (%d given, %d wanted)", oclass->in_plugin->name, pix_fmt, ffmpegenc->context->pix_fmt); return FALSE; } /* some codecs support more than one format, first auto-choose one */ GST_DEBUG_OBJECT (ffmpegenc, "picking an output format ..."); allowed_caps = gst_pad_get_allowed_caps (ffmpegenc->srcpad); if (!allowed_caps) { GST_DEBUG_OBJECT (ffmpegenc, "... but no peer, using template caps"); /* we need to copy because get_allowed_caps returns a ref, and * get_pad_template_caps doesn't */ allowed_caps = gst_caps_copy (gst_pad_get_pad_template_caps (ffmpegenc->srcpad)); } GST_DEBUG_OBJECT (ffmpegenc, "chose caps %" GST_PTR_FORMAT, allowed_caps); gst_ffmpeg_caps_with_codecid (oclass->in_plugin->id, oclass->in_plugin->type, allowed_caps, ffmpegenc->context); /* try to set this caps on the other side */ other_caps = gst_ffmpeg_codecid_to_caps (oclass->in_plugin->id, ffmpegenc->context, TRUE); if (!other_caps) { gst_ffmpeg_avcodec_close (ffmpegenc->context); GST_DEBUG ("Unsupported codec - no caps found"); return FALSE; } icaps = gst_caps_intersect (allowed_caps, other_caps); gst_caps_unref (allowed_caps); gst_caps_unref (other_caps); if (gst_caps_is_empty (icaps)) { gst_caps_unref (icaps); return FALSE; } if (gst_caps_get_size (icaps) > 1) { GstCaps *newcaps; newcaps = gst_caps_new_full (gst_structure_copy (gst_caps_get_structure (icaps, 0)), NULL); gst_caps_unref (icaps); icaps = newcaps; } if (!gst_pad_set_caps (ffmpegenc->srcpad, icaps)) { gst_ffmpeg_avcodec_close (ffmpegenc->context); gst_caps_unref (icaps); return FALSE; } gst_caps_unref (icaps); /* success! */ ffmpegenc->opened = TRUE; return TRUE; } static GstFlowReturn gst_ffmpegenc_chain_video (GstPad * pad, GstBuffer * inbuf) { GstFFMpegEnc *ffmpegenc = (GstFFMpegEnc *) (GST_PAD_PARENT (pad)); GstBuffer *outbuf; gint ret_size = 0, frame_size; GST_DEBUG_OBJECT (ffmpegenc, "Received buffer of time %" GST_TIME_FORMAT, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (inbuf))); frame_size = gst_ffmpeg_avpicture_fill ((AVPicture *) ffmpegenc->picture, GST_BUFFER_DATA (inbuf), ffmpegenc->context->pix_fmt, ffmpegenc->context->width, ffmpegenc->context->height); g_return_val_if_fail (frame_size == GST_BUFFER_SIZE (inbuf), GST_FLOW_ERROR); ffmpegenc->picture->pts = gst_ffmpeg_time_gst_to_ff (GST_BUFFER_TIMESTAMP (inbuf), ffmpegenc->context->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); if (ret_size < 0) { #ifndef GST_DISABLE_GST_DEBUG GstFFMpegEncClass *oclass = (GstFFMpegEncClass *) (G_OBJECT_GET_CLASS (ffmpegenc)); GST_ERROR_OBJECT (ffmpegenc, "ffenc_%s: failed to encode buffer", oclass->in_plugin->name); #endif /* GST_DISABLE_GST_DEBUG */ gst_buffer_unref (inbuf); gst_buffer_unref (outbuf); 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); 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); return gst_pad_push (ffmpegenc->srcpad, outbuf); } static GstFlowReturn gst_ffmpegenc_chain_audio (GstPad * pad, GstBuffer * inbuf) { GstBuffer *outbuf = NULL, *subbuf; GstFFMpegEnc *ffmpegenc = (GstFFMpegEnc *) (GST_OBJECT_PARENT (pad)); gint size, ret_size = 0, in_size, frame_size; GstFlowReturn ret; size = GST_BUFFER_SIZE (inbuf); /* FIXME: events (discont (flush!) and eos (close down) etc.) */ frame_size = ffmpegenc->context->frame_size * 2 * ffmpegenc->context->channels; in_size = size; if (ffmpegenc->cache) in_size += GST_BUFFER_SIZE (ffmpegenc->cache); GST_DEBUG_OBJECT (ffmpegenc, "Received buffer of time %" GST_TIME_FORMAT " and size %d (cache: %d)", GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (inbuf)), size, in_size - size); while (1) { /* do we have enough data for one frame? */ if (in_size / (2 * ffmpegenc->context->channels) < ffmpegenc->context->frame_size) { if (in_size > size) { /* this is panic! we got a buffer, but still don't have enough * data. Merge them and retry in the next cycle... */ ffmpegenc->cache = gst_buffer_join (ffmpegenc->cache, inbuf); } else if (in_size == size) { /* exactly the same! how wonderful */ ffmpegenc->cache = inbuf; } else if (in_size > 0) { ffmpegenc->cache = gst_buffer_create_sub (inbuf, size - in_size, in_size); GST_BUFFER_DURATION (ffmpegenc->cache) = GST_BUFFER_DURATION (inbuf) * GST_BUFFER_SIZE (ffmpegenc->cache) / size; GST_BUFFER_TIMESTAMP (ffmpegenc->cache) = GST_BUFFER_TIMESTAMP (inbuf) + (GST_BUFFER_DURATION (inbuf) * (size - in_size) / size); gst_buffer_unref (inbuf); } else { gst_buffer_unref (inbuf); } return GST_FLOW_OK; } /* create the frame */ if (in_size > size) { /* merge */ subbuf = gst_buffer_create_sub (inbuf, 0, frame_size - (in_size - size)); GST_BUFFER_DURATION (subbuf) = GST_BUFFER_DURATION (inbuf) * GST_BUFFER_SIZE (subbuf) / size; subbuf = gst_buffer_join (ffmpegenc->cache, subbuf); ffmpegenc->cache = NULL; } else { subbuf = gst_buffer_create_sub (inbuf, size - in_size, frame_size); GST_BUFFER_DURATION (subbuf) = GST_BUFFER_DURATION (inbuf) * GST_BUFFER_SIZE (subbuf) / size; GST_BUFFER_TIMESTAMP (subbuf) = GST_BUFFER_TIMESTAMP (inbuf) + (GST_BUFFER_DURATION (inbuf) * (size - in_size) / size); } 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 (subbuf)); if (ret_size < 0) { GST_ERROR_OBJECT (ffmpegenc, "Failed to encode buffer"); gst_buffer_unref (inbuf); gst_buffer_unref (outbuf); gst_buffer_unref (subbuf); return GST_FLOW_OK; } GST_BUFFER_SIZE (outbuf) = ret_size; GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (subbuf); GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (subbuf); gst_buffer_set_caps (outbuf, GST_PAD_CAPS (ffmpegenc->srcpad)); gst_buffer_unref (subbuf); ret = gst_pad_push (ffmpegenc->srcpad, outbuf); in_size -= frame_size; } 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) { GstFFMpegEnc *ffmpegenc; /* Get a pointer of the right type. */ ffmpegenc = (GstFFMpegEnc *) (object); /* Check the argument id to see which argument we're setting. */ switch (prop_id) { case ARG_BIT_RATE: ffmpegenc->bitrate = g_value_get_ulong (value); break; case ARG_GOP_SIZE: ffmpegenc->gop_size = g_value_get_int (value); break; case ARG_ME_METHOD: ffmpegenc->me_method = g_value_get_enum (value); break; case ARG_BUFSIZE: ffmpegenc->buffer_size = g_value_get_ulong (value); break; case ARG_RTP_PAYLOAD_SIZE: ffmpegenc->rtp_payload_size = g_value_get_ulong (value); break; default: if (!gst_ffmpeg_cfg_set_property (object, value, pspec)) G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } /* The set function is simply the inverse of the get fuction. */ static void gst_ffmpegenc_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstFFMpegEnc *ffmpegenc; /* It's not null if we got it, but it might not be ours */ ffmpegenc = (GstFFMpegEnc *) (object); switch (prop_id) { case ARG_BIT_RATE: g_value_set_ulong (value, ffmpegenc->bitrate); break; case ARG_GOP_SIZE: g_value_set_int (value, ffmpegenc->gop_size); break; case ARG_ME_METHOD: g_value_set_enum (value, ffmpegenc->me_method); break; case ARG_BUFSIZE: g_value_set_ulong (value, ffmpegenc->buffer_size); break; case ARG_RTP_PAYLOAD_SIZE: g_value_set_ulong (value, ffmpegenc->rtp_payload_size); break; default: if (!gst_ffmpeg_cfg_get_property (object, value, pspec)) G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static GstStateChangeReturn gst_ffmpegenc_change_state (GstElement * element, GstStateChange transition) { GstFFMpegEnc *ffmpegenc = (GstFFMpegEnc *) element; GstStateChangeReturn result; switch (transition) { default: break; } result = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); switch (transition) { case GST_STATE_CHANGE_PAUSED_TO_READY: gst_ffmpegenc_flush_buffers (ffmpegenc, FALSE); if (ffmpegenc->opened) { gst_ffmpeg_avcodec_close (ffmpegenc->context); ffmpegenc->opened = FALSE; } if (ffmpegenc->cache) { gst_buffer_unref (ffmpegenc->cache); ffmpegenc->cache = NULL; } if (ffmpegenc->file) { fclose (ffmpegenc->file); ffmpegenc->file = NULL; } break; default: break; } return result; } gboolean gst_ffmpegenc_register (GstPlugin * plugin) { GTypeInfo typeinfo = { sizeof (GstFFMpegEncClass), (GBaseInitFunc) gst_ffmpegenc_base_init, NULL, (GClassInitFunc) gst_ffmpegenc_class_init, NULL, NULL, sizeof (GstFFMpegEnc), 0, (GInstanceInitFunc) gst_ffmpegenc_init, }; GType type; AVCodec *in_plugin; in_plugin = first_avcodec; 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 = NULL, *sinkcaps = NULL; GstFFMpegEncClassParams *params; /* no quasi codecs, please */ if (in_plugin->id == CODEC_ID_RAWVIDEO || in_plugin->id == CODEC_ID_ZLIB || (in_plugin->id >= CODEC_ID_PCM_S16LE && in_plugin->id <= CODEC_ID_PCM_S24DAUD)) { goto next; } /* only encoders */ if (!in_plugin->encode) { goto next; } /* name */ if (!gst_ffmpeg_get_codecid_longname (in_plugin->id)) { GST_INFO ("Add encoder %s (%d) please", in_plugin->name, in_plugin->id); goto next; } /* first make sure we've got a supported type */ srccaps = gst_ffmpeg_codecid_to_caps (in_plugin->id, NULL, TRUE); if (in_plugin->type == CODEC_TYPE_VIDEO) { sinkcaps = gst_caps_from_string ("video/x-raw-rgb; video/x-raw-yuv; video/x-raw-gray"); } else { sinkcaps = gst_ffmpeg_codectype_to_caps (in_plugin->type, NULL); } if (!sinkcaps || !srccaps) goto next; /* construct the type */ type_name = g_strdup_printf ("ffenc_%s", in_plugin->name); /* if it's already registered, drop it */ if (g_type_from_name (type_name)) { g_free (type_name); goto next; } params = g_new0 (GstFFMpegEncClassParams, 1); params->in_plugin = in_plugin; params->srccaps = gst_caps_ref (srccaps); params->sinkcaps = gst_caps_ref (sinkcaps); g_hash_table_insert (enc_global_plugins, GINT_TO_POINTER (0), (gpointer) params); /* create the glib type now */ type = g_type_register_static (GST_TYPE_ELEMENT, type_name, &typeinfo, 0); if (!gst_element_register (plugin, type_name, GST_RANK_NONE, type)) { g_free (type_name); return FALSE; } g_free (type_name); g_hash_table_insert (enc_global_plugins, GINT_TO_POINTER (type), (gpointer) params); next: if (sinkcaps) gst_caps_unref (sinkcaps); if (srccaps) gst_caps_unref (srccaps); in_plugin = in_plugin->next; } g_hash_table_remove (enc_global_plugins, GINT_TO_POINTER (0)); return TRUE; }