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gstreamer/ext/x264/gstx264enc.c
Janin Kolenc dde471ab49 x264enc: add force keyframe event handling 
Use the GstForceKeyUnit event to force a keyframe.
Fixes #578112.
2009-04-09 23:53:39 +02:00

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/* GStreamer H264 encoder plugin
* Copyright (C) 2005 Michal Benes <michal.benes@itonis.tv>
* Copyright (C) 2005 Josef Zlomek <josef.zlomek@itonis.tv>
* Copyright (C) 2008 Mark Nauwelaerts <mnauw@users.sf.net>
*
* 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.
*
* <refsect2>
* <title>Example pipeline</title>
* |[
* 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.
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "gstx264enc.h"
#include <string.h>
#include <stdlib.h>
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_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_STATS_FILE_DEFAULT "x264.log"
#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);
GST_BOILERPLATE (GstX264Enc, gst_x264_enc, GstElement, GST_TYPE_ELEMENT);
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 <josef.zlomek@itonis.tv>, "
"Mark Nauwelaerts <mnauw@users.sf.net>");
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",
ARG_STATS_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)
{
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);
}
/* 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->stats_file = g_strdup (ARG_STATS_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_DEBUG_FUNCPTR (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->stats_file);
encoder->stats_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;
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;
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->stats_file;
encoder->x264param.rc.psz_stat_out = encoder->stats_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, i_data;
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);
sps = nal[1].p_payload;
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 */
i_data = buffer_size - i_size - 2;
nal_size = x264_nal_encode (buffer + i_size + 2, &i_data, 0, &nal[1]);
GST_WRITE_UINT16_BE (buffer + i_size, nal_size);
i_size += nal_size + 2;
buffer[i_size++] = 1; /* number of PPSs */
i_data = buffer_size - i_size - 2;
nal_size = x264_nal_encode (buffer + i_size + 2, &i_data, 0, &nal[2]);
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;
int nal_size;
int encoder_return;
gint i;
GstFlowReturn ret;
GstClockTime timestamp;
GstClockTime duration;
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;
}
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;
}
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), encoder->buffer, 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:
if (encoder->stats_file)
g_free (encoder->stats_file);
encoder->stats_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:
g_value_set_string (value, encoder->stats_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_NONE, 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)
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