/* GStreamer H264 encoder plugin * Copyright (C) 2005 Michal Benes * Copyright (C) 2005 Josef Zlomek * Copyright (C) 2008 Mark Nauwelaerts * * 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. */ /** * SECTION:element-x264enc * @see_also: faac * * This element encodes raw video into H264 compressed data, * also otherwise known as MPEG-4 AVC (Advanced Video Codec). * * The #GstX264Enc:pass property controls the type of encoding. In case of Constant * Bitrate Encoding (actually ABR), the #GstX264Enc:bitrate will determine the quality * of the encoding. This will similarly be the case if this target bitrate * is to obtained in multiple (2 or 3) pass encoding. * Alternatively, one may choose to perform Constant Quantizer or Quality encoding, * in which case the #GstX264Enc:quantizer property controls much of the outcome. * * The H264 profile that is eventually used depends on a few settings. * If #GstX264Enc:dct8x8 is enabled, then High profile is used. * Otherwise, if #GstX264Enc:cabac entropy coding is enabled or #GstX264Enc:bframes * are allowed, then Main Profile is in effect, and otherwise Baseline profile * applies. As such, Main is presently the default profile, which is fine for * most players and settings, but in some cases (e.g. hardware platforms) * a more restricted profile/level may be necessary. * * * Example pipeline * |[ * gst-launch -v videotestsrc num-buffers=1000 ! x264enc qp-min=18 ! \ * avimux ! filesink location=videotestsrc.avi * ]| This example pipeline will encode a test video source to H264 muxed in an * AVI container, while ensuring a sane minimum quantization factor to avoid * some (excessive) waste. * |[ * gst-launch -v videotestsrc num-buffers=1000 ! x264enc pass=quant ! \ * matroskamux ! filesink location=videotestsrc.avi * ]| This example pipeline will encode a test video source to H264 using fixed * quantization, and muxes it in a Matroska container. * */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include "gstx264enc.h" #if X264_BUILD >= 76 #define X264_ENC_NALS 1 #endif #include #include GST_DEBUG_CATEGORY_STATIC (x264_enc_debug); #define GST_CAT_DEFAULT x264_enc_debug enum { ARG_0, ARG_THREADS, ARG_PASS, ARG_QUANTIZER, ARG_STATS_FILE, ARG_MULTIPASS_CACHE_FILE, ARG_BYTE_STREAM, ARG_BITRATE, ARG_VBV_BUF_CAPACITY, ARG_ME, ARG_SUBME, ARG_ANALYSE, ARG_DCT8x8, ARG_REF, ARG_BFRAMES, ARG_B_ADAPT, ARG_B_PYRAMID, ARG_WEIGHTB, ARG_SPS_ID, ARG_TRELLIS, ARG_KEYINT_MAX, ARG_CABAC, ARG_QP_MIN, ARG_QP_MAX, ARG_QP_STEP, ARG_IP_FACTOR, ARG_PB_FACTOR, ARG_NR, ARG_INTERLACED }; #define ARG_THREADS_DEFAULT 1 #define ARG_PASS_DEFAULT 0 #define ARG_QUANTIZER_DEFAULT 21 #define ARG_MULTIPASS_CACHE_FILE_DEFAULT "x264.log" #define ARG_STATS_FILE_DEFAULT ARG_MULTIPASS_CACHE_FILE_DEFAULT #define ARG_BYTE_STREAM_DEFAULT FALSE #define ARG_BITRATE_DEFAULT (2 * 1024) #define ARG_VBV_BUF_CAPACITY_DEFAULT 600 #define ARG_ME_DEFAULT X264_ME_HEX #define ARG_SUBME_DEFAULT 1 #define ARG_ANALYSE_DEFAULT 0 #define ARG_DCT8x8_DEFAULT FALSE #define ARG_REF_DEFAULT 1 #define ARG_BFRAMES_DEFAULT 0 #define ARG_B_ADAPT_DEFAULT TRUE #define ARG_B_PYRAMID_DEFAULT FALSE #define ARG_WEIGHTB_DEFAULT FALSE #define ARG_SPS_ID_DEFAULT 0 #define ARG_TRELLIS_DEFAULT TRUE #define ARG_KEYINT_MAX_DEFAULT 0 #define ARG_CABAC_DEFAULT TRUE #define ARG_QP_MIN_DEFAULT 10 #define ARG_QP_MAX_DEFAULT 51 #define ARG_QP_STEP_DEFAULT 4 #define ARG_IP_FACTOR_DEFAULT 1.4 #define ARG_PB_FACTOR_DEFAULT 1.3 #define ARG_NR_DEFAULT 0 #define ARG_INTERLACED_DEFAULT FALSE enum { GST_X264_ENC_PASS_CBR = 0, GST_X264_ENC_PASS_QUANT = 0x04, GST_X264_ENC_PASS_QUAL, GST_X264_ENC_PASS_PASS1 = 0x11, GST_X264_ENC_PASS_PASS2, GST_X264_ENC_PASS_PASS3 }; #define GST_X264_ENC_PASS_TYPE (gst_x264_enc_pass_get_type()) static GType gst_x264_enc_pass_get_type (void) { static GType pass_type = 0; static const GEnumValue pass_types[] = { {GST_X264_ENC_PASS_CBR, "Constant Bitrate Encoding", "cbr"}, {GST_X264_ENC_PASS_QUANT, "Constant Quantizer", "quant"}, {GST_X264_ENC_PASS_QUAL, "Constant Quality", "qual"}, {GST_X264_ENC_PASS_PASS1, "VBR Encoding - Pass 1", "pass1"}, {GST_X264_ENC_PASS_PASS2, "VBR Encoding - Pass 2", "pass2"}, {GST_X264_ENC_PASS_PASS3, "VBR Encoding - Pass 3", "pass3"}, {0, NULL, NULL} }; if (!pass_type) { pass_type = g_enum_register_static ("GstX264EncPass", pass_types); } return pass_type; } #define GST_X264_ENC_ME_TYPE (gst_x264_enc_me_get_type()) static GType gst_x264_enc_me_get_type (void) { static GType me_type = 0; static const GEnumValue me_types[] = { {X264_ME_DIA, "diamond search, radius 1 (fast)", "dia"}, {X264_ME_HEX, "hexagonal search, radius 2", "hex"}, {X264_ME_UMH, "uneven multi-hexagon search", "umh"}, {X264_ME_ESA, "exhaustive search (slow)", "esa"}, {0, NULL, NULL} }; if (!me_type) { me_type = g_enum_register_static ("GstX264EncMe", me_types); } return me_type; } #define GST_X264_ENC_ANALYSE_TYPE (gst_x264_enc_analyse_get_type()) static GType gst_x264_enc_analyse_get_type (void) { static GType analyse_type = 0; static const GFlagsValue analyse_types[] = { {X264_ANALYSE_I4x4, "i4x4", "i4x4"}, {X264_ANALYSE_I8x8, "i8x8", "i8x8"}, {X264_ANALYSE_PSUB16x16, "p8x8", "p8x8"}, {X264_ANALYSE_PSUB8x8, "p4x4", "p4x4"}, {X264_ANALYSE_BSUB16x16, "b8x8", "b8x8"}, {0, NULL, NULL}, }; if (!analyse_type) { analyse_type = g_flags_register_static ("GstX264EncAnalyse", analyse_types); } return analyse_type; } static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS ("video/x-raw-yuv, " "format = (fourcc) I420, " "framerate = (fraction) [0, MAX], " "width = (int) [ 16, MAX ], " "height = (int) [ 16, MAX ]") ); static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS ("video/x-h264, " "framerate = (fraction) [0/1, MAX], " "width = (int) [ 1, MAX ], " "height = (int) [ 1, MAX ]") ); static void gst_x264_enc_finalize (GObject * object); static void gst_x264_enc_reset (GstX264Enc * encoder); static gboolean gst_x264_enc_init_encoder (GstX264Enc * encoder); static void gst_x264_enc_close_encoder (GstX264Enc * encoder); static gboolean gst_x264_enc_sink_set_caps (GstPad * pad, GstCaps * caps); static gboolean gst_x264_enc_sink_event (GstPad * pad, GstEvent * event); static gboolean gst_x264_enc_src_event (GstPad * pad, GstEvent * event); static GstFlowReturn gst_x264_enc_chain (GstPad * pad, GstBuffer * buf); static void gst_x264_enc_flush_frames (GstX264Enc * encoder, gboolean send); static GstFlowReturn gst_x264_enc_encode_frame (GstX264Enc * encoder, x264_picture_t * pic_in, int *i_nal, gboolean send); static GstStateChangeReturn gst_x264_enc_change_state (GstElement * element, GstStateChange transition); static void gst_x264_enc_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_x264_enc_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static void _do_init (GType object_type) { const GInterfaceInfo preset_interface_info = { NULL, /* interface_init */ NULL, /* interface_finalize */ NULL /* interface_data */ }; g_type_add_interface_static (object_type, GST_TYPE_PRESET, &preset_interface_info); } GST_BOILERPLATE_FULL (GstX264Enc, gst_x264_enc, GstElement, GST_TYPE_ELEMENT, _do_init); static void gst_x264_enc_base_init (gpointer g_class) { GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); gst_element_class_set_details_simple (element_class, "x264enc", "Codec/Encoder/Video", "H264 Encoder", "Josef Zlomek , " "Mark Nauwelaerts "); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&src_factory)); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&sink_factory)); } static void gst_x264_enc_class_init (GstX264EncClass * klass) { GObjectClass *gobject_class; GstElementClass *gstelement_class; gobject_class = (GObjectClass *) klass; gstelement_class = (GstElementClass *) klass; gobject_class->set_property = gst_x264_enc_set_property; gobject_class->get_property = gst_x264_enc_get_property; gobject_class->finalize = gst_x264_enc_finalize; gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_x264_enc_change_state); g_object_class_install_property (gobject_class, ARG_THREADS, g_param_spec_uint ("threads", "Threads", "Number of threads used by the codec (0 for automatic)", 0, 4, ARG_THREADS_DEFAULT, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, ARG_PASS, g_param_spec_enum ("pass", "Encoding pass/type", "Encoding pass/type", GST_X264_ENC_PASS_TYPE, ARG_PASS_DEFAULT, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, ARG_QUANTIZER, g_param_spec_uint ("quantizer", "Constant Quantizer", "Constant quantizer or quality to apply", 1, 50, ARG_QUANTIZER_DEFAULT, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, ARG_STATS_FILE, g_param_spec_string ("stats-file", "Stats File", "Filename for multipass statistics (deprecated, use multipass-stats-file)", ARG_STATS_FILE_DEFAULT, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, ARG_MULTIPASS_CACHE_FILE, g_param_spec_string ("multipass-cache-file", "Multipass Cache File", "Filename for multipass cache file", ARG_MULTIPASS_CACHE_FILE_DEFAULT, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, ARG_BYTE_STREAM, g_param_spec_boolean ("byte-stream", "Byte Stream", "Generate byte stream format of NALU", ARG_BYTE_STREAM_DEFAULT, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, ARG_BITRATE, g_param_spec_uint ("bitrate", "Bitrate", "Bitrate in kbit/sec", 1, 100 * 1024, ARG_BITRATE_DEFAULT, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, ARG_VBV_BUF_CAPACITY, g_param_spec_uint ("vbv-buf-capacity", "VBV buffer capacity", "Size of the VBV buffer in milliseconds", 300, 10000, ARG_VBV_BUF_CAPACITY_DEFAULT, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, ARG_ME, g_param_spec_enum ("me", "Motion Estimation", "Integer pixel motion estimation method", GST_X264_ENC_ME_TYPE, ARG_ME_DEFAULT, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, ARG_SUBME, g_param_spec_uint ("subme", "Subpixel Motion Estimation", "Subpixel motion estimation and partition decision quality: 1=fast, 6=best", 1, 6, ARG_SUBME_DEFAULT, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, ARG_ANALYSE, g_param_spec_flags ("analyse", "Analyse", "Partitions to consider", GST_X264_ENC_ANALYSE_TYPE, ARG_ANALYSE_DEFAULT, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, ARG_DCT8x8, g_param_spec_boolean ("dct8x8", "DCT8x8", "Adaptive spatial transform size", ARG_DCT8x8_DEFAULT, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, ARG_REF, g_param_spec_uint ("ref", "Reference Frames", "Number of reference frames", 1, 12, ARG_REF_DEFAULT, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, ARG_BFRAMES, g_param_spec_uint ("bframes", "B-Frames", "Number of B-frames between I and P", 0, 4, ARG_BFRAMES_DEFAULT, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, ARG_B_ADAPT, g_param_spec_boolean ("b-adapt", "B-Adapt", "Automatically decide how many B-frames to use", ARG_B_ADAPT_DEFAULT, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, ARG_B_PYRAMID, g_param_spec_boolean ("b-pyramid", "B-Pyramid", "Keep some B-frames as references", ARG_B_PYRAMID_DEFAULT, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, ARG_WEIGHTB, g_param_spec_boolean ("weightb", "Weighted B-Frames", "Weighted prediction for B-frames", ARG_WEIGHTB_DEFAULT, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, ARG_SPS_ID, g_param_spec_uint ("sps-id", "SPS ID", "SPS and PPS ID number", 0, 31, ARG_SPS_ID_DEFAULT, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, ARG_TRELLIS, g_param_spec_boolean ("trellis", "Trellis quantization", "Enable trellis searched quantization", ARG_TRELLIS_DEFAULT, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, ARG_KEYINT_MAX, g_param_spec_uint ("key-int-max", "Key-frame maximal interval", "Maximal distance between two key-frames (0 for automatic)", 0, G_MAXINT, ARG_KEYINT_MAX_DEFAULT, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, ARG_CABAC, g_param_spec_boolean ("cabac", "Use CABAC", "Enable CABAC entropy coding", ARG_CABAC_DEFAULT, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, ARG_QP_MIN, g_param_spec_uint ("qp-min", "Minimum Quantizer", "Minimum quantizer", 1, 51, ARG_QP_MIN_DEFAULT, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, ARG_QP_MAX, g_param_spec_uint ("qp-max", "Maximum Quantizer", "Maximum quantizer", 1, 51, ARG_QP_MAX_DEFAULT, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, ARG_QP_STEP, g_param_spec_uint ("qp-step", "Maximum Quantizer Difference", "Maximum quantizer difference between frames", 1, 50, ARG_QP_STEP_DEFAULT, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, ARG_IP_FACTOR, g_param_spec_float ("ip-factor", "IP-Factor", "Quantizer factor between I- and P-frames", 0, 2, ARG_IP_FACTOR_DEFAULT, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, ARG_PB_FACTOR, g_param_spec_float ("pb-factor", "PB-Factor", "Quantizer factor between P- and B-frames", 0, 2, ARG_PB_FACTOR_DEFAULT, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, ARG_NR, g_param_spec_uint ("noise-reduction", "Noise Reducation", "Noise reduction strength", 0, 100000, ARG_NR_DEFAULT, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, ARG_INTERLACED, g_param_spec_boolean ("interlaced", "Interlaced", "Interlaced material", ARG_INTERLACED_DEFAULT, G_PARAM_READWRITE)); } void gst_x264_enc_log_callback (gpointer private, gint level, const char *format, va_list args) { #ifndef GST_DISABLE_GST_DEBUG GstDebugLevel gst_level; GObject *object = (GObject *) private; switch (level) { case X264_LOG_NONE: gst_level = GST_LEVEL_NONE; break; case X264_LOG_ERROR: gst_level = GST_LEVEL_ERROR; break; case X264_LOG_WARNING: gst_level = GST_LEVEL_WARNING; break; case X264_LOG_INFO: gst_level = GST_LEVEL_INFO; break; default: /* push x264enc debug down to our lower levels to avoid some clutter */ gst_level = GST_LEVEL_LOG; break; } gst_debug_log_valist (x264_enc_debug, gst_level, "", "", 0, object, format, args); #endif /* GST_DISABLE_GST_DEBUG */ } /* initialize the new element * instantiate pads and add them to element * set functions * initialize structure */ static void gst_x264_enc_init (GstX264Enc * encoder, GstX264EncClass * klass) { encoder->sinkpad = gst_pad_new_from_static_template (&sink_factory, "sink"); gst_pad_set_setcaps_function (encoder->sinkpad, GST_DEBUG_FUNCPTR (gst_x264_enc_sink_set_caps)); gst_pad_set_event_function (encoder->sinkpad, GST_DEBUG_FUNCPTR (gst_x264_enc_sink_event)); gst_pad_set_chain_function (encoder->sinkpad, GST_DEBUG_FUNCPTR (gst_x264_enc_chain)); gst_element_add_pad (GST_ELEMENT (encoder), encoder->sinkpad); encoder->srcpad = gst_pad_new_from_static_template (&src_factory, "src"); gst_pad_use_fixed_caps (encoder->srcpad); gst_element_add_pad (GST_ELEMENT (encoder), encoder->srcpad); gst_pad_set_event_function (encoder->srcpad, GST_DEBUG_FUNCPTR (gst_x264_enc_src_event)); /* properties */ encoder->threads = ARG_THREADS_DEFAULT; encoder->pass = ARG_PASS_DEFAULT; encoder->quantizer = ARG_QUANTIZER_DEFAULT; encoder->mp_cache_file = g_strdup (ARG_MULTIPASS_CACHE_FILE_DEFAULT); encoder->byte_stream = ARG_BYTE_STREAM_DEFAULT; encoder->bitrate = ARG_BITRATE_DEFAULT; encoder->vbv_buf_capacity = ARG_VBV_BUF_CAPACITY_DEFAULT; encoder->me = ARG_ME_DEFAULT; encoder->subme = ARG_SUBME_DEFAULT; encoder->analyse = ARG_ANALYSE_DEFAULT; encoder->dct8x8 = ARG_DCT8x8_DEFAULT; encoder->ref = ARG_REF_DEFAULT; encoder->bframes = ARG_BFRAMES_DEFAULT; encoder->b_adapt = ARG_B_ADAPT_DEFAULT; encoder->b_pyramid = ARG_B_PYRAMID_DEFAULT; encoder->weightb = ARG_WEIGHTB_DEFAULT; encoder->sps_id = ARG_SPS_ID_DEFAULT; encoder->trellis = ARG_TRELLIS_DEFAULT; encoder->keyint_max = ARG_KEYINT_MAX_DEFAULT; encoder->cabac = ARG_CABAC_DEFAULT; encoder->qp_min = ARG_QP_MIN_DEFAULT; encoder->qp_max = ARG_QP_MAX_DEFAULT; encoder->qp_step = ARG_QP_STEP_DEFAULT; encoder->ip_factor = ARG_IP_FACTOR_DEFAULT; encoder->pb_factor = ARG_PB_FACTOR_DEFAULT; encoder->noise_reduction = ARG_NR_DEFAULT; encoder->interlaced = ARG_INTERLACED_DEFAULT; /* resources */ encoder->delay = g_queue_new (); encoder->buffer_size = 100000; encoder->buffer = g_malloc (encoder->buffer_size); encoder->i_type = X264_TYPE_AUTO; x264_param_default (&encoder->x264param); /* log callback setup; part of parameters */ encoder->x264param.pf_log = gst_x264_enc_log_callback; encoder->x264param.p_log_private = encoder; encoder->x264param.i_log_level = X264_LOG_DEBUG; gst_x264_enc_reset (encoder); } static void gst_x264_enc_reset (GstX264Enc * encoder) { encoder->x264enc = NULL; encoder->width = 0; encoder->height = 0; } static void gst_x264_enc_finalize (GObject * object) { GstX264Enc *encoder = GST_X264_ENC (object); g_free (encoder->mp_cache_file); encoder->mp_cache_file = NULL; g_free (encoder->buffer); encoder->buffer = NULL; g_queue_free (encoder->delay); encoder->delay = NULL; gst_x264_enc_close_encoder (encoder); G_OBJECT_CLASS (parent_class)->finalize (object); } /* * gst_x264_enc_init_encoder * @encoder: Encoder which should be initialized. * * Initialize x264 encoder. * */ static gboolean gst_x264_enc_init_encoder (GstX264Enc * encoder) { guint pass = 0; /* make sure that the encoder is closed */ gst_x264_enc_close_encoder (encoder); GST_OBJECT_LOCK (encoder); /* set up encoder parameters */ encoder->x264param.i_threads = encoder->threads; encoder->x264param.i_fps_num = encoder->fps_num; encoder->x264param.i_fps_den = encoder->fps_den; encoder->x264param.i_width = encoder->width; encoder->x264param.i_height = encoder->height; if (encoder->par_den > 0) { encoder->x264param.vui.i_sar_width = encoder->par_num; encoder->x264param.vui.i_sar_height = encoder->par_den; } encoder->x264param.i_keyint_max = encoder->keyint_max ? encoder->keyint_max : (2 * encoder->fps_num / encoder->fps_den); encoder->x264param.b_cabac = encoder->cabac; // TODO encoder->x264param.b_aud = 1; encoder->x264param.i_sps_id = encoder->sps_id; if ((((encoder->height == 576) && ((encoder->width == 720) || (encoder->width == 704) || (encoder->width == 352))) || ((encoder->height == 288) && (encoder->width == 352))) && (encoder->fps_den == 1) && (encoder->fps_num == 25)) { encoder->x264param.vui.i_vidformat = 1; /* PAL */ } else if ((((encoder->height == 480) && ((encoder->width == 720) || (encoder->width == 704) || (encoder->width == 352))) || ((encoder->height == 240) && (encoder->width == 352))) && (encoder->fps_den == 1001) && ((encoder->fps_num == 30000) || (encoder->fps_num == 24000))) { encoder->x264param.vui.i_vidformat = 2; /* NTSC */ } else encoder->x264param.vui.i_vidformat = 5; /* unspecified */ encoder->x264param.analyse.i_trellis = encoder->trellis ? 1 : 0; encoder->x264param.analyse.b_psnr = 0; encoder->x264param.analyse.i_me_method = encoder->me; encoder->x264param.analyse.i_subpel_refine = encoder->subme; encoder->x264param.analyse.inter = encoder->analyse; encoder->x264param.analyse.b_transform_8x8 = encoder->dct8x8; encoder->x264param.analyse.b_weighted_bipred = encoder->weightb; encoder->x264param.analyse.i_noise_reduction = encoder->noise_reduction; encoder->x264param.i_frame_reference = encoder->ref; encoder->x264param.i_bframe = encoder->bframes; encoder->x264param.b_bframe_pyramid = encoder->b_pyramid; #if X264_BUILD < 63 encoder->x264param.b_bframe_adaptive = encoder->b_adapt; #else encoder->x264param.i_bframe_adaptive = encoder->b_adapt ? X264_B_ADAPT_FAST : X264_B_ADAPT_NONE; #endif encoder->x264param.b_interlaced = encoder->interlaced; encoder->x264param.b_deblocking_filter = 1; encoder->x264param.i_deblocking_filter_alphac0 = 0; encoder->x264param.i_deblocking_filter_beta = 0; encoder->x264param.rc.f_ip_factor = encoder->ip_factor; encoder->x264param.rc.f_pb_factor = encoder->pb_factor; #ifdef X264_ENC_NALS encoder->x264param.b_annexb = encoder->byte_stream; #endif switch (encoder->pass) { case GST_X264_ENC_PASS_QUANT: encoder->x264param.rc.i_rc_method = X264_RC_CQP; encoder->x264param.rc.i_qp_constant = encoder->quantizer; break; case GST_X264_ENC_PASS_QUAL: encoder->x264param.rc.i_rc_method = X264_RC_CRF; encoder->x264param.rc.f_rf_constant = encoder->quantizer; break; case GST_X264_ENC_PASS_CBR: case GST_X264_ENC_PASS_PASS1: case GST_X264_ENC_PASS_PASS2: case GST_X264_ENC_PASS_PASS3: default: encoder->x264param.rc.i_rc_method = X264_RC_ABR; encoder->x264param.rc.i_bitrate = encoder->bitrate; encoder->x264param.rc.i_vbv_max_bitrate = encoder->bitrate; encoder->x264param.rc.i_vbv_buffer_size = encoder->x264param.rc.i_vbv_max_bitrate * encoder->vbv_buf_capacity / 1000; encoder->x264param.rc.i_qp_min = encoder->qp_min; encoder->x264param.rc.i_qp_max = encoder->qp_max; encoder->x264param.rc.i_qp_step = encoder->qp_step; pass = encoder->pass & 0xF; break; } switch (pass) { case 0: encoder->x264param.rc.b_stat_read = 0; encoder->x264param.rc.b_stat_write = 0; break; case 1: /* Turbo mode parameters. */ encoder->x264param.i_frame_reference = (encoder->ref + 1) >> 1; encoder->x264param.analyse.i_subpel_refine = CLAMP (encoder->subme - 1, 1, 3); encoder->x264param.analyse.inter &= ~X264_ANALYSE_PSUB8x8; encoder->x264param.analyse.inter &= ~X264_ANALYSE_BSUB16x16; encoder->x264param.analyse.i_trellis = 0; encoder->x264param.rc.b_stat_read = 0; encoder->x264param.rc.b_stat_write = 1; break; case 2: encoder->x264param.rc.b_stat_read = 1; encoder->x264param.rc.b_stat_write = 0; break; case 3: encoder->x264param.rc.b_stat_read = 1; encoder->x264param.rc.b_stat_write = 1; break; } encoder->x264param.rc.psz_stat_in = encoder->mp_cache_file; encoder->x264param.rc.psz_stat_out = encoder->mp_cache_file; GST_OBJECT_UNLOCK (encoder); encoder->x264enc = x264_encoder_open (&encoder->x264param); if (!encoder->x264enc) { GST_ELEMENT_ERROR (encoder, STREAM, ENCODE, ("Can not initialize x264 encoder."), (NULL)); return FALSE; } return TRUE; } /* gst_x264_enc_close_encoder * @encoder: Encoder which should close. * * Close x264 encoder. */ static void gst_x264_enc_close_encoder (GstX264Enc * encoder) { if (encoder->x264enc != NULL) { x264_encoder_close (encoder->x264enc); encoder->x264enc = NULL; } } /* * Returns: Buffer with the stream headers. */ static GstBuffer * gst_x264_enc_header_buf (GstX264Enc * encoder) { GstBuffer *buf; x264_nal_t *nal; int i_nal; int header_return; int i_size; int nal_size; #ifndef X264_ENC_NALS int i_data; #endif guint8 *buffer, *sps; gulong buffer_size; if (G_UNLIKELY (encoder->x264enc == NULL)) return NULL; /* Create avcC header. */ header_return = x264_encoder_headers (encoder->x264enc, &nal, &i_nal); if (header_return < 0) { GST_ELEMENT_ERROR (encoder, STREAM, ENCODE, ("Encode x264 header failed."), ("x264_encoder_headers return code=%d", header_return)); return NULL; } /* x264 is expected to return an SEI (some identification info), * followed by an SPS and PPS */ if (i_nal != 3 || nal[1].i_type != 7 || nal[2].i_type != 8 || nal[1].i_payload < 4 || nal[2].i_payload < 1) { GST_ELEMENT_ERROR (encoder, STREAM, ENCODE, (NULL), ("Unexpected x264 header.")); return NULL; } /* nal payloads with emulation_prevention_three_byte, and some header data */ buffer_size = (nal[1].i_payload + nal[2].i_payload) * 4 + 100; buffer = g_malloc (buffer_size); /* old style API: nal's are not encapsulated, and have no sync/size prefix, * new style API: nal's are encapsulated, and have 4-byte size prefix */ #ifndef X264_ENC_NALS sps = nal[1].p_payload; #else sps = nal[1].p_payload + 4; #endif buffer[0] = 1; /* AVC Decoder Configuration Record ver. 1 */ buffer[1] = sps[0]; /* profile_idc */ buffer[2] = sps[1]; /* profile_compability */ buffer[3] = sps[2]; /* level_idc */ buffer[4] = 0xfc | (4 - 1); /* nal_length_size_minus1 */ i_size = 5; buffer[i_size++] = 0xe0 | 1; /* number of SPSs */ #ifndef X264_ENC_NALS i_data = buffer_size - i_size - 2; nal_size = x264_nal_encode (buffer + i_size + 2, &i_data, 0, &nal[1]); #else nal_size = nal[1].i_payload - 4; memcpy (buffer + i_size + 2, nal[1].p_payload + 4, nal_size); #endif GST_WRITE_UINT16_BE (buffer + i_size, nal_size); i_size += nal_size + 2; buffer[i_size++] = 1; /* number of PPSs */ #ifndef X264_ENC_NALS i_data = buffer_size - i_size - 2; nal_size = x264_nal_encode (buffer + i_size + 2, &i_data, 0, &nal[2]); #else nal_size = nal[2].i_payload - 4; memcpy (buffer + i_size + 2, nal[2].p_payload + 4, nal_size); #endif GST_WRITE_UINT16_BE (buffer + i_size, nal_size); i_size += nal_size + 2; buf = gst_buffer_new_and_alloc (i_size); memcpy (GST_BUFFER_DATA (buf), buffer, i_size); g_free (buffer); return buf; } /* gst_x264_enc_set_src_caps * Returns: TRUE on success. */ static gboolean gst_x264_enc_set_src_caps (GstX264Enc * encoder, GstPad * pad, GstCaps * caps) { GstBuffer *buf; GstCaps *outcaps; gboolean res; outcaps = gst_caps_new_simple ("video/x-h264", "width", G_TYPE_INT, encoder->width, "height", G_TYPE_INT, encoder->height, "framerate", GST_TYPE_FRACTION, encoder->fps_num, encoder->fps_den, NULL); if (!encoder->byte_stream) { buf = gst_x264_enc_header_buf (encoder); if (buf != NULL) { gst_caps_set_simple (outcaps, "codec_data", GST_TYPE_BUFFER, buf, NULL); gst_buffer_unref (buf); } } res = gst_pad_set_caps (pad, outcaps); gst_caps_unref (outcaps); return res; } static gboolean gst_x264_enc_sink_set_caps (GstPad * pad, GstCaps * caps) { GstX264Enc *encoder = GST_X264_ENC (GST_OBJECT_PARENT (pad)); gint width, height; gint fps_num, fps_den; gint par_num, par_den; gint i; /* get info from caps */ /* only I420 supported for now; so apparently claims x264enc ? */ if (!gst_video_format_parse_caps (caps, &encoder->format, &width, &height) || encoder->format != GST_VIDEO_FORMAT_I420) return FALSE; if (!gst_video_parse_caps_framerate (caps, &fps_num, &fps_den)) return FALSE; if (!gst_video_parse_caps_pixel_aspect_ratio (caps, &par_num, &par_den)) { par_num = 1; par_den = 1; } /* If the encoder is initialized, do not reinitialize it again if not necessary */ if (encoder->x264enc) { if (width == encoder->width && height == encoder->height && fps_num == encoder->fps_num && fps_den == encoder->fps_den && par_num == encoder->par_num && par_den == encoder->par_den) return TRUE; /* clear out pending frames */ gst_x264_enc_flush_frames (encoder, TRUE); encoder->sps_id++; } /* store input description */ encoder->width = width; encoder->height = height; encoder->fps_num = fps_num; encoder->fps_den = fps_den; encoder->par_num = par_num; encoder->par_den = par_den; /* prepare a cached image description */ encoder->image_size = gst_video_format_get_size (encoder->format, width, height); for (i = 0; i < 3; ++i) { /* only offsets now, is shifted later */ encoder->offset[i] = gst_video_format_get_component_offset (encoder->format, i, width, height); encoder->stride[i] = gst_video_format_get_row_stride (encoder->format, i, width); } if (!gst_x264_enc_init_encoder (encoder)) return FALSE; if (!gst_x264_enc_set_src_caps (encoder, encoder->srcpad, caps)) { gst_x264_enc_close_encoder (encoder); return FALSE; } return TRUE; } static gboolean gst_x264_enc_src_event (GstPad * pad, GstEvent * event) { gboolean ret; GstX264Enc *encoder; encoder = GST_X264_ENC (gst_pad_get_parent (pad)); switch (GST_EVENT_TYPE (event)) { case GST_EVENT_CUSTOM_UPSTREAM:{ const GstStructure *s; s = gst_event_get_structure (event); if (gst_structure_has_name (s, "GstForceKeyUnit")) { /* Set I frame request */ encoder->i_type = X264_TYPE_I; } break; } default: break; } ret = gst_pad_push_event (encoder->sinkpad, event); gst_object_unref (encoder); return ret; } static gboolean gst_x264_enc_sink_event (GstPad * pad, GstEvent * event) { gboolean ret; GstX264Enc *encoder; encoder = GST_X264_ENC (gst_pad_get_parent (pad)); switch (GST_EVENT_TYPE (event)) { case GST_EVENT_EOS: gst_x264_enc_flush_frames (encoder, TRUE); break; /* no flushing if flush received, * buffers in encoder are considered (in the) past */ case GST_EVENT_CUSTOM_DOWNSTREAM:{ const GstStructure *s; s = gst_event_get_structure (event); if (gst_structure_has_name (s, "GstForceKeyUnit")) { encoder->i_type = X264_TYPE_I; } break; } default: break; } ret = gst_pad_push_event (encoder->srcpad, event); gst_object_unref (encoder); return ret; } /* chain function * this function does the actual processing */ static GstFlowReturn gst_x264_enc_chain (GstPad * pad, GstBuffer * buf) { GstX264Enc *encoder = GST_X264_ENC (GST_OBJECT_PARENT (pad)); GstFlowReturn ret; x264_picture_t pic_in; gint i_nal, i; if (G_UNLIKELY (encoder->x264enc == NULL)) goto not_inited; /* create x264_picture_t from the buffer */ /* mostly taken from mplayer (file ve_x264.c) */ if (G_UNLIKELY (GST_BUFFER_SIZE (buf) < encoder->image_size)) goto wrong_buffer_size; /* remember the timestamp and duration */ g_queue_push_tail (encoder->delay, buf); /* set up input picture */ memset (&pic_in, 0, sizeof (pic_in)); pic_in.img.i_csp = X264_CSP_I420; pic_in.img.i_plane = 3; for (i = 0; i < 3; i++) { pic_in.img.plane[i] = GST_BUFFER_DATA (buf) + encoder->offset[i]; pic_in.img.i_stride[i] = encoder->stride[i]; } pic_in.i_type = encoder->i_type; /* Reset encoder forced picture type */ encoder->i_type = X264_TYPE_AUTO; pic_in.i_pts = GST_BUFFER_TIMESTAMP (buf); ret = gst_x264_enc_encode_frame (encoder, &pic_in, &i_nal, TRUE); /* input buffer is released later on */ return ret; /* ERRORS */ not_inited: { GST_WARNING_OBJECT (encoder, "Got buffer before set_caps was called"); gst_buffer_unref (buf); return GST_FLOW_NOT_NEGOTIATED; } wrong_buffer_size: { GST_ELEMENT_ERROR (encoder, STREAM, ENCODE, ("Encode x264 frame failed."), ("Wrong buffer size %d (should be %d)", GST_BUFFER_SIZE (buf), encoder->image_size)); gst_buffer_unref (buf); return GST_FLOW_ERROR; } } static GstFlowReturn gst_x264_enc_encode_frame (GstX264Enc * encoder, x264_picture_t * pic_in, int *i_nal, gboolean send) { GstBuffer *out_buf = NULL, *in_buf = NULL; x264_picture_t pic_out; x264_nal_t *nal; int i_size; #ifndef X264_ENC_NALS int nal_size; gint i; #endif int encoder_return; GstFlowReturn ret; GstClockTime timestamp; GstClockTime duration; guint8 *data; if (G_UNLIKELY (encoder->x264enc == NULL)) return GST_FLOW_NOT_NEGOTIATED; encoder_return = x264_encoder_encode (encoder->x264enc, &nal, i_nal, pic_in, &pic_out); if (encoder_return < 0) { GST_ELEMENT_ERROR (encoder, STREAM, ENCODE, ("Encode x264 frame failed."), ("x264_encoder_encode return code=%d", encoder_return)); return GST_FLOW_ERROR; } if (!*i_nal) { return GST_FLOW_OK; } #ifndef X264_ENC_NALS i_size = 0; for (i = 0; i < *i_nal; i++) { gint i_data = encoder->buffer_size - i_size - 4; if (i_data < nal[i].i_payload * 2) { encoder->buffer_size += 2 * nal[i].i_payload; encoder->buffer = g_realloc (encoder->buffer, encoder->buffer_size); i_data = encoder->buffer_size - i_size - 4; } nal_size = x264_nal_encode (encoder->buffer + i_size + 4, &i_data, 0, &nal[i]); if (encoder->byte_stream) GST_WRITE_UINT32_BE (encoder->buffer + i_size, 1); else GST_WRITE_UINT32_BE (encoder->buffer + i_size, nal_size); i_size += nal_size + 4; } data = encoder->buffer; #else i_size = encoder_return; data = nal[0].p_payload; #endif in_buf = g_queue_pop_head (encoder->delay); if (in_buf) { timestamp = GST_BUFFER_TIMESTAMP (in_buf); duration = GST_BUFFER_DURATION (in_buf); gst_buffer_unref (in_buf); } else { GST_ELEMENT_ERROR (encoder, STREAM, ENCODE, (NULL), ("Timestamp queue empty.")); return GST_FLOW_ERROR; } if (!send) return GST_FLOW_OK; ret = gst_pad_alloc_buffer (encoder->srcpad, GST_BUFFER_OFFSET_NONE, i_size, GST_PAD_CAPS (encoder->srcpad), &out_buf); if (ret != GST_FLOW_OK) return ret; memcpy (GST_BUFFER_DATA (out_buf), data, i_size); GST_BUFFER_SIZE (out_buf) = i_size; /* PTS */ /* FIXME ??: maybe use DTS here, since: * - it is so practiced by other encoders, * - downstream (e.g. muxers) might not enjoy non-monotone timestamps, * whereas a decoder can also deal with DTS */ GST_BUFFER_TIMESTAMP (out_buf) = pic_out.i_pts; GST_BUFFER_DURATION (out_buf) = duration; if (pic_out.i_type == X264_TYPE_IDR) { GST_BUFFER_FLAG_UNSET (out_buf, GST_BUFFER_FLAG_DELTA_UNIT); } else { GST_BUFFER_FLAG_SET (out_buf, GST_BUFFER_FLAG_DELTA_UNIT); } return gst_pad_push (encoder->srcpad, out_buf); } static void gst_x264_enc_flush_frames (GstX264Enc * encoder, gboolean send) { GstFlowReturn flow_ret; gint i_nal; /* first send the remaining frames */ if (encoder->x264enc) do { flow_ret = gst_x264_enc_encode_frame (encoder, NULL, &i_nal, send); } while (flow_ret == GST_FLOW_OK && i_nal > 0); /* in any case, make sure the delay queue is emptied */ while (!g_queue_is_empty (encoder->delay)) gst_buffer_unref (g_queue_pop_head (encoder->delay)); } static GstStateChangeReturn gst_x264_enc_change_state (GstElement * element, GstStateChange transition) { GstX264Enc *encoder = GST_X264_ENC (element); GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS; ret = parent_class->change_state (element, transition); if (ret == GST_STATE_CHANGE_FAILURE) goto out; switch (transition) { case GST_STATE_CHANGE_PAUSED_TO_READY: gst_x264_enc_flush_frames (encoder, FALSE); gst_x264_enc_close_encoder (encoder); gst_x264_enc_reset (encoder); break; default: break; } out: return ret; } static void gst_x264_enc_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstX264Enc *encoder; GstState state; encoder = GST_X264_ENC (object); GST_OBJECT_LOCK (encoder); /* state at least matters for sps, bytestream, pass, * and so by extension ... */ state = GST_STATE (encoder); if (state != GST_STATE_READY && state != GST_STATE_NULL) goto wrong_state; switch (prop_id) { case ARG_THREADS: encoder->threads = g_value_get_uint (value); break; case ARG_PASS: encoder->pass = g_value_get_enum (value); break; case ARG_QUANTIZER: encoder->quantizer = g_value_get_uint (value); break; case ARG_STATS_FILE: case ARG_MULTIPASS_CACHE_FILE: if (encoder->mp_cache_file) g_free (encoder->mp_cache_file); encoder->mp_cache_file = g_value_dup_string (value); break; case ARG_BYTE_STREAM: encoder->byte_stream = g_value_get_boolean (value); break; case ARG_BITRATE: encoder->bitrate = g_value_get_uint (value); break; case ARG_VBV_BUF_CAPACITY: encoder->vbv_buf_capacity = g_value_get_uint (value); break; case ARG_ME: encoder->me = g_value_get_enum (value); break; case ARG_SUBME: encoder->subme = g_value_get_uint (value); break; case ARG_ANALYSE: encoder->analyse = g_value_get_flags (value); break; case ARG_DCT8x8: encoder->dct8x8 = g_value_get_boolean (value); break; case ARG_REF: encoder->ref = g_value_get_uint (value); break; case ARG_BFRAMES: encoder->bframes = g_value_get_uint (value); break; case ARG_B_ADAPT: encoder->b_adapt = g_value_get_boolean (value); break; case ARG_B_PYRAMID: encoder->b_pyramid = g_value_get_boolean (value); break; case ARG_WEIGHTB: encoder->weightb = g_value_get_boolean (value); break; case ARG_SPS_ID: encoder->sps_id = g_value_get_uint (value); break; case ARG_TRELLIS: encoder->trellis = g_value_get_boolean (value); break; case ARG_KEYINT_MAX: encoder->keyint_max = g_value_get_uint (value); break; case ARG_CABAC: encoder->cabac = g_value_get_boolean (value); break; case ARG_QP_MIN: encoder->qp_min = g_value_get_uint (value); break; case ARG_QP_MAX: encoder->qp_max = g_value_get_uint (value); break; case ARG_QP_STEP: encoder->qp_step = g_value_get_uint (value); break; case ARG_IP_FACTOR: encoder->ip_factor = g_value_get_float (value); break; case ARG_PB_FACTOR: encoder->pb_factor = g_value_get_float (value); break; case ARG_NR: encoder->noise_reduction = g_value_get_uint (value); break; case ARG_INTERLACED: encoder->interlaced = g_value_get_boolean (value); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } GST_OBJECT_UNLOCK (encoder); return; /* ERROR */ wrong_state: { GST_DEBUG_OBJECT (encoder, "setting property in wrong state"); GST_OBJECT_UNLOCK (encoder); } } static void gst_x264_enc_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstX264Enc *encoder; encoder = GST_X264_ENC (object); GST_OBJECT_LOCK (encoder); switch (prop_id) { case ARG_THREADS: g_value_set_uint (value, encoder->threads); break; case ARG_PASS: g_value_set_enum (value, encoder->pass); break; case ARG_QUANTIZER: g_value_set_uint (value, encoder->quantizer); break; case ARG_STATS_FILE: case ARG_MULTIPASS_CACHE_FILE: g_value_set_string (value, encoder->mp_cache_file); break; case ARG_BYTE_STREAM: g_value_set_boolean (value, encoder->byte_stream); break; case ARG_BITRATE: g_value_set_uint (value, encoder->bitrate); break; case ARG_VBV_BUF_CAPACITY: g_value_set_uint (value, encoder->vbv_buf_capacity); break; case ARG_ME: g_value_set_enum (value, encoder->me); break; case ARG_SUBME: g_value_set_uint (value, encoder->subme); break; case ARG_ANALYSE: g_value_set_flags (value, encoder->analyse); break; case ARG_DCT8x8: g_value_set_boolean (value, encoder->dct8x8); break; case ARG_REF: g_value_set_uint (value, encoder->ref); break; case ARG_BFRAMES: g_value_set_uint (value, encoder->bframes); break; case ARG_B_ADAPT: g_value_set_boolean (value, encoder->b_adapt); break; case ARG_B_PYRAMID: g_value_set_boolean (value, encoder->b_pyramid); break; case ARG_WEIGHTB: g_value_set_boolean (value, encoder->weightb); break; case ARG_SPS_ID: g_value_set_uint (value, encoder->sps_id); break; case ARG_TRELLIS: g_value_set_boolean (value, encoder->trellis); break; case ARG_KEYINT_MAX: g_value_set_uint (value, encoder->keyint_max); break; case ARG_QP_MIN: g_value_set_uint (value, encoder->qp_min); break; case ARG_QP_MAX: g_value_set_uint (value, encoder->qp_max); break; case ARG_QP_STEP: g_value_set_uint (value, encoder->qp_step); break; case ARG_CABAC: g_value_set_boolean (value, encoder->cabac); break; case ARG_IP_FACTOR: g_value_set_float (value, encoder->ip_factor); break; case ARG_PB_FACTOR: g_value_set_float (value, encoder->pb_factor); break; case ARG_NR: g_value_set_uint (value, encoder->noise_reduction); break; case ARG_INTERLACED: g_value_set_boolean (value, encoder->interlaced); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } GST_OBJECT_UNLOCK (encoder); } static gboolean plugin_init (GstPlugin * plugin) { GST_DEBUG_CATEGORY_INIT (x264_enc_debug, "x264enc", 0, "h264 encoding element"); return gst_element_register (plugin, "x264enc", GST_RANK_PRIMARY, GST_TYPE_X264_ENC); } GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR, "x264", "libx264-based H264 plugins", plugin_init, VERSION, "GPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)