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gstreamer/ext/x264/gstx264enc.c
Robert Swain ed561dcdb1 x264enc: Add baseline profile to caps 
libx264 does not yet support the features that create the difference
between baseline and constrained baseline profile. Hence it currently
supports both though it can only technically encode constrained
baseline.
2012-02-09 11:55:07 +01:00

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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, in that case #GstX264Enc:bitrate is the maximum bitrate.
*
* 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. The main profile is imposed by default,
* which is fine for most software players and settings,
* but in some cases (e.g. hardware platforms) a more restricted profile/level
* may be necessary. The recommended way to set a profile is to set it in the
* downstream caps.
*
* If a preset/tuning are specified then these will define the default values and
* the property defaults will be ignored. After this the option-string property is
* applied, followed by the user-set properties, fast first pass restrictions and
* finally the profile restrictions.
*
* <note>Some settings, including the default settings, may lead to quite
* some latency (i.e. frame buffering) in the encoder. This may cause problems
* with pipeline stalling in non-trivial pipelines, because the encoder latency
* is often considerably higher than the default size of a simple queue
* element. Such problems are caused by one of the queues in the other
* non-x264enc streams/branches filling up and blocking upstream. They can
* be fixed by relaxing the default time/size/buffer limits on the queue
* elements in the non-x264 branches, or using a (single) multiqueue element
* for all branches. Also see the last example below.
* </note>
*
* <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.
* |[
* gst-launch -v videotestsrc num-buffers=1000 ! x264enc pass=5 quantizer=25 speed-preset=6 ! video/x-h264, profile=baseline ! \
* qtmux ! filesink location=videotestsrc.mov
* ]| This example pipeline will encode a test video source to H264 using
* constant quality at around Q25 using the 'medium' speed/quality preset and
* restricting the options used so that the output is H.264 Baseline Profile
* compliant and finally multiplexing the output in Quicktime mov format.
* |[
* gst-launch -v videotestsrc num-buffers=1000 ! tee name=t ! queue ! xvimagesink \
* t. ! queue ! x264enc rc-lookahead=5 ! fakesink
* ]| This example pipeline will encode a test video source to H264 while
* displaying the input material at the same time. As mentioned above,
* specific settings are needed in this case to avoid pipeline stalling.
* Depending on goals and context, other approaches are possible, e.g.
* tune=zerolatency might be configured, or queue sizes increased.
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "gstx264enc.h"
#include <gst/pbutils/pbutils.h>
#include <gst/video/video.h>
#if X264_BUILD >= 71
#define X264_DELAYED_FRAMES_API
#endif
#if X264_BUILD >= 76
#define X264_ENC_NALS 1
#endif
#if X264_BUILD >= 69
#define X264_MB_RC
#endif
#if X264_BUILD >= 78
/* b-pyramid was available before but was changed from boolean here */
#define X264_B_PYRAMID
#endif
#if X264_BUILD >= 80
#define X264_ENH_THREADING
#endif
#if X264_BUILD >= 82
#define X264_INTRA_REFRESH
#endif
#if X264_BUILD >= 86
#define X264_PRESETS
#endif
#if X264_BUILD >= 95
#define FORCE_INTRA_API
#endif
#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_SLICED_THREADS,
ARG_SYNC_LOOKAHEAD,
ARG_PASS,
ARG_QUANTIZER,
ARG_STATS_FILE,
ARG_MULTIPASS_CACHE_FILE,
ARG_BYTE_STREAM,
ARG_BITRATE,
ARG_INTRA_REFRESH,
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_AU_NALU,
ARG_TRELLIS,
ARG_KEYINT_MAX,
ARG_CABAC,
ARG_QP_MIN,
ARG_QP_MAX,
ARG_QP_STEP,
ARG_IP_FACTOR,
ARG_PB_FACTOR,
ARG_RC_MB_TREE,
ARG_RC_LOOKAHEAD,
ARG_NR,
ARG_INTERLACED,
ARG_OPTION_STRING,
ARG_PROFILE,
ARG_SPEED_PRESET,
ARG_PSY_TUNE,
ARG_TUNE,
};
#define ARG_THREADS_DEFAULT 0 /* 0 means 'auto' which is 1.5x number of CPU cores */
#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_AU_NALU_DEFAULT TRUE
#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
#define ARG_SLICED_THREADS_DEFAULT FALSE
#define ARG_SYNC_LOOKAHEAD_DEFAULT -1
#define ARG_RC_MB_TREE_DEFAULT TRUE
#define ARG_RC_LOOKAHEAD_DEFAULT 40
#define ARG_INTRA_REFRESH_DEFAULT FALSE
#define ARG_PROFILE_DEFAULT 2 /* 'Main Profile' - matches profile of property defaults */
#define ARG_OPTION_STRING_DEFAULT ""
static GString *x264enc_defaults;
#define ARG_SPEED_PRESET_DEFAULT 6 /* 'medium' preset - matches x264 CLI default */
#define ARG_PSY_TUNE_DEFAULT 0 /* no psy tuning */
#define ARG_TUNE_DEFAULT 0 /* no tuning */
enum
{
GST_X264_ENC_STREAM_FORMAT_FROM_PROPERTY,
GST_X264_ENC_STREAM_FORMAT_AVC,
GST_X264_ENC_STREAM_FORMAT_BYTE_STREAM
};
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 (debugging only)", "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 GEnumValue *me_types;
int n, i;
if (me_type != 0)
return me_type;
n = 0;
while (x264_motion_est_names[n] != NULL)
n++;
me_types = g_new0 (GEnumValue, n + 1);
for (i = 0; i < n; i++) {
me_types[i].value = i;
me_types[i].value_name = x264_motion_est_names[i];
me_types[i].value_nick = x264_motion_est_names[i];
}
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;
}
#ifdef X264_PRESETS
#define GST_X264_ENC_PROFILE_TYPE (gst_x264_enc_profile_get_type())
static GType
gst_x264_enc_profile_get_type (void)
{
static GType profile_type = 0;
static GEnumValue *profile_types;
int n, i;
if (profile_type != 0)
return profile_type;
n = 0;
while (x264_profile_names[n] != NULL)
n++;
profile_types = g_new0 (GEnumValue, n + 2);
i = 0;
profile_types[i].value = i;
profile_types[i].value_name = "No profile";
profile_types[i].value_nick = "None";
for (i = 1; i <= n; i++) {
profile_types[i].value = i;
profile_types[i].value_name = x264_profile_names[i - 1];
profile_types[i].value_nick = x264_profile_names[i - 1];
}
profile_type = g_enum_register_static ("GstX264EncProfile", profile_types);
return profile_type;
}
#define GST_X264_ENC_SPEED_PRESET_TYPE (gst_x264_enc_speed_preset_get_type())
static GType
gst_x264_enc_speed_preset_get_type (void)
{
static GType speed_preset_type = 0;
static GEnumValue *speed_preset_types;
int n, i;
if (speed_preset_type != 0)
return speed_preset_type;
n = 0;
while (x264_preset_names[n] != NULL)
n++;
speed_preset_types = g_new0 (GEnumValue, n + 2);
speed_preset_types[0].value = 0;
speed_preset_types[0].value_name = "No preset";
speed_preset_types[0].value_nick = "None";
for (i = 1; i <= n; i++) {
speed_preset_types[i].value = i;
speed_preset_types[i].value_name = x264_preset_names[i - 1];
speed_preset_types[i].value_nick = x264_preset_names[i - 1];
}
speed_preset_type =
g_enum_register_static ("GstX264EncPreset", speed_preset_types);
return speed_preset_type;
}
static const GFlagsValue tune_types[] = {
{0x0, "No tuning", "none"},
{0x1, "Still image", "stillimage"},
{0x2, "Fast decode", "fastdecode"},
{0x4, "Zero latency (requires constant framerate)", "zerolatency"},
{0, NULL, NULL},
};
#define GST_X264_ENC_TUNE_TYPE (gst_x264_enc_tune_get_type())
static GType
gst_x264_enc_tune_get_type (void)
{
static GType tune_type = 0;
if (!tune_type) {
tune_type = g_flags_register_static ("GstX264EncTune", tune_types + 1);
}
return tune_type;
}
enum
{
GST_X264_ENC_TUNE_NONE,
GST_X264_ENC_TUNE_FILM,
GST_X264_ENC_TUNE_ANIMATION,
GST_X264_ENC_TUNE_GRAIN,
GST_X264_ENC_TUNE_PSNR,
GST_X264_ENC_TUNE_SSIM,
GST_X264_ENC_TUNE_LAST
};
static const GEnumValue psy_tune_types[] = {
{GST_X264_ENC_TUNE_NONE, "No tuning", "none"},
{GST_X264_ENC_TUNE_FILM, "Film", "film"},
{GST_X264_ENC_TUNE_ANIMATION, "Animation", "animation"},
{GST_X264_ENC_TUNE_GRAIN, "Grain", "grain"},
{GST_X264_ENC_TUNE_PSNR, "PSNR", "psnr"},
{GST_X264_ENC_TUNE_SSIM, "SSIM", "ssim"},
{0, NULL, NULL},
};
#define GST_X264_ENC_PSY_TUNE_TYPE (gst_x264_enc_psy_tune_get_type())
static GType
gst_x264_enc_psy_tune_get_type (void)
{
static GType psy_tune_type = 0;
if (!psy_tune_type) {
psy_tune_type =
g_enum_register_static ("GstX264EncPsyTune", psy_tune_types);
}
return psy_tune_type;
}
static void
gst_x264_enc_build_tunings_string (GstX264Enc * x264enc)
{
int i = 1;
if (x264enc->tunings)
g_string_free (x264enc->tunings, TRUE);
if (x264enc->psy_tune) {
x264enc->tunings =
g_string_new (psy_tune_types[x264enc->psy_tune].value_nick);
} else {
x264enc->tunings = g_string_new (NULL);
}
while (tune_types[i].value_name) {
if (x264enc->tune & (1 << (i - 1)))
g_string_append_printf (x264enc->tunings, "%s%s",
x264enc->tunings->len ? "," : "", tune_types[i].value_nick);
i++;
}
if (x264enc->tunings->len)
GST_DEBUG_OBJECT (x264enc, "Constructed tunings string: %s",
x264enc->tunings->str);
}
#endif
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, YV12 }, "
"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 ], "
"stream-format = (string) { byte-stream, avc }, "
"alignment = (string) { au }, "
"profile = (string) { high-10, high, main, baseline, "
"constrained-baseline, high-10-intra }")
);
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 GstCaps *gst_x264_enc_sink_get_caps (GstPad * pad);
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 <josef.zlomek@itonis.tv>, "
"Mark Nauwelaerts <mnauw@users.sf.net>");
gst_element_class_add_static_pad_template (element_class, &src_factory);
gst_element_class_add_static_pad_template (element_class, &sink_factory);
}
/* don't forget to free the string after use */
static const gchar *
gst_x264_enc_build_partitions (gint analyse)
{
GString *string;
if (!analyse)
return NULL;
string = g_string_new (NULL);
if (analyse & X264_ANALYSE_I4x4)
g_string_append (string, "i4x4");
if (analyse & X264_ANALYSE_I8x8)
g_string_append (string, ",i8x8");
if (analyse & X264_ANALYSE_PSUB16x16)
g_string_append (string, ",p8x8");
if (analyse & X264_ANALYSE_PSUB8x8)
g_string_append (string, ",p4x4");
if (analyse & X264_ANALYSE_BSUB16x16)
g_string_append (string, ",b8x8");
return (const gchar *) g_string_free (string, FALSE);
}
static void
gst_x264_enc_class_init (GstX264EncClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
const gchar *partitions = NULL;
x264enc_defaults = g_string_new ("");
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);
/* options for which we don't use string equivalents */
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_PARAM_STATIC_STRINGS));
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_PARAM_STATIC_STRINGS));
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_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_PLAYING));
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",
0, 10000, ARG_VBV_BUF_CAPACITY_DEFAULT,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_PLAYING));
#ifdef X264_PRESETS
g_object_class_install_property (gobject_class, ARG_SPEED_PRESET,
g_param_spec_enum ("speed-preset", "Speed/quality preset",
"Preset name for speed/quality tradeoff options (can affect decode "
"compatibility - impose restrictions separately for your target decoder)",
GST_X264_ENC_SPEED_PRESET_TYPE, ARG_SPEED_PRESET_DEFAULT,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, ARG_PSY_TUNE,
g_param_spec_enum ("psy-tune", "Psychovisual tuning preset",
"Preset name for psychovisual tuning options",
GST_X264_ENC_PSY_TUNE_TYPE, ARG_PSY_TUNE_DEFAULT,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, ARG_TUNE,
g_param_spec_flags ("tune", "Content tuning preset",
"Preset name for non-psychovisual tuning options",
GST_X264_ENC_TUNE_TYPE, ARG_TUNE_DEFAULT,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, ARG_PROFILE,
g_param_spec_enum ("profile", "H.264 profile",
"Apply restrictions to meet H.264 Profile constraints. This will "
"override other properties if necessary. This will only be used "
"if downstream elements do not specify a profile in their caps (DEPRECATED)",
GST_X264_ENC_PROFILE_TYPE, ARG_PROFILE_DEFAULT,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
#endif /* X264_PRESETS */
g_object_class_install_property (gobject_class, ARG_OPTION_STRING,
g_param_spec_string ("option-string", "Option string",
"String of x264 options (overridden by element properties)",
ARG_OPTION_STRING_DEFAULT,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/* options for which we _do_ use string equivalents */
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_PARAM_STATIC_STRINGS));
/* NOTE: this first string append doesn't require the ':' delimiter but the
* rest do */
g_string_append_printf (x264enc_defaults, "threads=%d", ARG_THREADS_DEFAULT);
#ifdef X264_ENH_THREADING
g_object_class_install_property (gobject_class, ARG_SLICED_THREADS,
g_param_spec_boolean ("sliced-threads", "Sliced Threads",
"Low latency but lower efficiency threading",
ARG_SLICED_THREADS_DEFAULT,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_string_append_printf (x264enc_defaults, ":sliced-threads=%d",
ARG_SLICED_THREADS_DEFAULT);
g_object_class_install_property (gobject_class, ARG_SYNC_LOOKAHEAD,
g_param_spec_int ("sync-lookahead", "Sync Lookahead",
"Number of buffer frames for threaded lookahead (-1 for automatic)",
-1, 250, ARG_SYNC_LOOKAHEAD_DEFAULT,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_string_append_printf (x264enc_defaults, ":sync-lookahead=%d",
ARG_SYNC_LOOKAHEAD_DEFAULT);
#endif
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-cache-file)",
ARG_STATS_FILE_DEFAULT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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_PARAM_STATIC_STRINGS));
g_string_append_printf (x264enc_defaults, ":stats=%s",
ARG_MULTIPASS_CACHE_FILE_DEFAULT);
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_PARAM_STATIC_STRINGS));
g_string_append_printf (x264enc_defaults, ":annexb=%d",
ARG_BYTE_STREAM_DEFAULT);
#ifdef X264_INTRA_REFRESH
g_object_class_install_property (gobject_class, ARG_INTRA_REFRESH,
g_param_spec_boolean ("intra-refresh", "Intra Refresh",
"Use Periodic Intra Refresh instead of IDR frames",
ARG_INTRA_REFRESH_DEFAULT,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_string_append_printf (x264enc_defaults, ":intra-refresh=%d",
ARG_INTRA_REFRESH_DEFAULT);
#endif
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_PARAM_STATIC_STRINGS));
g_string_append_printf (x264enc_defaults, ":me=%s",
x264_motion_est_names[ARG_ME_DEFAULT]);
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, 10=best",
1, 10, ARG_SUBME_DEFAULT,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_string_append_printf (x264enc_defaults, ":subme=%d", ARG_SUBME_DEFAULT);
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_PARAM_STATIC_STRINGS));
partitions = gst_x264_enc_build_partitions (ARG_ANALYSE_DEFAULT);
if (partitions) {
g_string_append_printf (x264enc_defaults, ":partitions=%s", partitions);
g_free ((gpointer) partitions);
}
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_PARAM_STATIC_STRINGS));
g_string_append_printf (x264enc_defaults, ":8x8dct=%d", ARG_DCT8x8_DEFAULT);
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_PARAM_STATIC_STRINGS));
g_string_append_printf (x264enc_defaults, ":ref=%d", ARG_REF_DEFAULT);
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_PARAM_STATIC_STRINGS));
g_string_append_printf (x264enc_defaults, ":bframes=%d", ARG_BFRAMES_DEFAULT);
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_PARAM_STATIC_STRINGS));
g_string_append_printf (x264enc_defaults, ":b-adapt=%d", ARG_B_ADAPT_DEFAULT);
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_PARAM_STATIC_STRINGS));
#ifdef X264_B_PYRAMID
g_string_append_printf (x264enc_defaults, ":b-pyramid=%s",
x264_b_pyramid_names[ARG_B_PYRAMID_DEFAULT]);
#else
g_string_append_printf (x264enc_defaults, ":b-pyramid=%d",
ARG_B_PYRAMID_DEFAULT);
#endif /* X264_B_PYRAMID */
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_PARAM_STATIC_STRINGS));
g_string_append_printf (x264enc_defaults, ":weightb=%d", ARG_WEIGHTB_DEFAULT);
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_PARAM_STATIC_STRINGS));
g_string_append_printf (x264enc_defaults, ":sps-id=%d", ARG_SPS_ID_DEFAULT);
g_object_class_install_property (gobject_class, ARG_AU_NALU,
g_param_spec_boolean ("aud", "AUD",
"Use AU (Access Unit) delimiter", ARG_AU_NALU_DEFAULT,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_string_append_printf (x264enc_defaults, ":aud=%d", ARG_AU_NALU_DEFAULT);
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_PARAM_STATIC_STRINGS));
g_string_append_printf (x264enc_defaults, ":trellis=%d", ARG_TRELLIS_DEFAULT);
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_PARAM_STATIC_STRINGS));
g_string_append_printf (x264enc_defaults, ":keyint=%d",
ARG_KEYINT_MAX_DEFAULT);
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_PARAM_STATIC_STRINGS));
g_string_append_printf (x264enc_defaults, ":cabac=%d", ARG_CABAC_DEFAULT);
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_PARAM_STATIC_STRINGS));
g_string_append_printf (x264enc_defaults, ":qpmin=%d", ARG_QP_MIN_DEFAULT);
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_PARAM_STATIC_STRINGS));
g_string_append_printf (x264enc_defaults, ":qpmax=%d", ARG_QP_MAX_DEFAULT);
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_PARAM_STATIC_STRINGS));
g_string_append_printf (x264enc_defaults, ":qpstep=%d", ARG_QP_STEP_DEFAULT);
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_PARAM_STATIC_STRINGS));
g_string_append_printf (x264enc_defaults, ":ip-factor=%f",
ARG_IP_FACTOR_DEFAULT);
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_PARAM_STATIC_STRINGS));
g_string_append_printf (x264enc_defaults, ":pb-factor=%f",
ARG_PB_FACTOR_DEFAULT);
#ifdef X264_MB_RC
g_object_class_install_property (gobject_class, ARG_RC_MB_TREE,
g_param_spec_boolean ("mb-tree", "Macroblock Tree",
"Macroblock-Tree ratecontrol",
ARG_RC_MB_TREE_DEFAULT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_string_append_printf (x264enc_defaults, ":mbtree=%d",
ARG_RC_MB_TREE_DEFAULT);
g_object_class_install_property (gobject_class, ARG_RC_LOOKAHEAD,
g_param_spec_int ("rc-lookahead", "Rate Control Lookahead",
"Number of frames for frametype lookahead", 0, 250,
ARG_RC_LOOKAHEAD_DEFAULT,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_string_append_printf (x264enc_defaults, ":rc-lookahead=%d",
ARG_RC_LOOKAHEAD_DEFAULT);
#endif
g_object_class_install_property (gobject_class, ARG_NR,
g_param_spec_uint ("noise-reduction", "Noise Reduction",
"Noise reduction strength",
0, 100000, ARG_NR_DEFAULT,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_string_append_printf (x264enc_defaults, ":nr=%d", ARG_NR_DEFAULT);
g_object_class_install_property (gobject_class, ARG_INTERLACED,
g_param_spec_boolean ("interlaced", "Interlaced",
"Interlaced material", ARG_INTERLACED_DEFAULT,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_string_append_printf (x264enc_defaults, ":interlaced=%d",
ARG_INTERLACED_DEFAULT);
/* append deblock parameters */
g_string_append_printf (x264enc_defaults, ":deblock=0,0");
/* append weighted prediction parameter */
g_string_append_printf (x264enc_defaults, ":weightp=0");
}
static 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_getcaps_function (encoder->sinkpad,
GST_DEBUG_FUNCPTR (gst_x264_enc_sink_get_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->sliced_threads = ARG_SLICED_THREADS_DEFAULT;
encoder->sync_lookahead = ARG_SYNC_LOOKAHEAD_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->intra_refresh = ARG_INTRA_REFRESH_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->au_nalu = ARG_AU_NALU_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->mb_tree = ARG_RC_MB_TREE_DEFAULT;
encoder->rc_lookahead = ARG_RC_LOOKAHEAD_DEFAULT;
encoder->noise_reduction = ARG_NR_DEFAULT;
encoder->interlaced = ARG_INTERLACED_DEFAULT;
encoder->profile = ARG_PROFILE_DEFAULT;
encoder->option_string = g_string_new (NULL);
encoder->option_string_prop = g_string_new (ARG_OPTION_STRING_DEFAULT);
encoder->speed_preset = ARG_SPEED_PRESET_DEFAULT;
encoder->psy_tune = ARG_PSY_TUNE_DEFAULT;
encoder->tune = ARG_TUNE_DEFAULT;
/* resources */
encoder->delay = g_queue_new ();
encoder->buffer_size = 100000;
encoder->buffer = g_malloc (encoder->buffer_size);
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_segment_init (&encoder->segment, GST_FORMAT_TIME);
encoder->force_key_unit_event = NULL;
gst_x264_enc_reset (encoder);
}
static void
gst_x264_enc_reset (GstX264Enc * encoder)
{
encoder->x264enc = NULL;
encoder->width = 0;
encoder->height = 0;
encoder->current_byte_stream = GST_X264_ENC_STREAM_FORMAT_FROM_PROPERTY;
gst_segment_init (&encoder->segment, GST_FORMAT_UNDEFINED);
GST_OBJECT_LOCK (encoder);
gst_event_replace (&encoder->force_key_unit_event, NULL);
encoder->pending_key_unit_ts = GST_CLOCK_TIME_NONE;
GST_OBJECT_UNLOCK (encoder);
}
static void
gst_x264_enc_finalize (GObject * object)
{
GstX264Enc *encoder = GST_X264_ENC (object);
#define FREE_STRING(ptr) \
if (ptr) \
g_string_free (ptr, TRUE);
FREE_STRING (encoder->tunings);
FREE_STRING (encoder->option_string);
FREE_STRING (encoder->option_string_prop);
#undef FREE_STRING
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_parse_options
* @encoder: Encoder to which options are assigned
* @str: Option string
*
* Parse option string and assign to x264 parameters
*
*/
static gboolean
gst_x264_enc_parse_options (GstX264Enc * encoder, const gchar * str)
{
GStrv kvpairs;
guint npairs, i;
gint parse_result = 0, ret = 0;
gchar *options = (gchar *) str;
while (*options == ':')
options++;
kvpairs = g_strsplit (options, ":", 0);
npairs = g_strv_length (kvpairs);
for (i = 0; i < npairs; i++) {
GStrv key_val = g_strsplit (kvpairs[i], "=", 2);
parse_result =
x264_param_parse (&encoder->x264param, key_val[0], key_val[1]);
if (parse_result == X264_PARAM_BAD_NAME) {
GST_ERROR_OBJECT (encoder, "Bad name for option %s=%s",
key_val[0] ? key_val[0] : "", key_val[1] ? key_val[1] : "");
}
if (parse_result == X264_PARAM_BAD_VALUE) {
GST_ERROR_OBJECT (encoder,
"Bad value for option %s=%s (Note: a NULL value for a non-boolean triggers this)",
key_val[0] ? key_val[0] : "", key_val[1] ? key_val[1] : "");
}
g_strfreev (key_val);
if (parse_result)
ret++;
}
g_strfreev (kvpairs);
return !ret;
}
/*
* 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);
#ifdef X264_PRESETS
gst_x264_enc_build_tunings_string (encoder);
/* set x264 parameters and use preset/tuning if present */
GST_DEBUG_OBJECT (encoder, "Applying defaults with preset %s, tunings %s",
encoder->speed_preset ? x264_preset_names[encoder->speed_preset - 1] : "",
encoder->tunings && encoder->tunings->len ? encoder->tunings->str : "");
x264_param_default_preset (&encoder->x264param,
encoder->speed_preset ? x264_preset_names[encoder->speed_preset -
1] : NULL, encoder->tunings
&& encoder->tunings->len ? encoder->tunings->str : NULL);
/* log callback setup; part of parameters
* this needs to be done again after every *param_default* () call */
encoder->x264param.pf_log = gst_x264_enc_log_callback;
encoder->x264param.p_log_private = encoder;
encoder->x264param.i_log_level = X264_LOG_DEBUG;
/* if no preset nor tuning, use property defaults */
if (!encoder->speed_preset && !encoder->tunings->len) {
#endif /* X264_PRESETS */
GST_DEBUG_OBJECT (encoder, "Applying x264enc_defaults");
if (x264enc_defaults->len
&& gst_x264_enc_parse_options (encoder,
x264enc_defaults->str) == FALSE) {
GST_DEBUG_OBJECT (encoder,
"x264enc_defaults string contains errors. This is a bug.");
goto unlock_and_return;
}
#ifdef X264_PRESETS
} else {
/* When using presets we need to respect the default output format */
encoder->x264param.b_aud = encoder->au_nalu;
encoder->x264param.b_annexb = encoder->byte_stream;
}
#endif /* X264_PRESETS */
#if X264_BUILD >= 81
/* setup appropriate timebase for gstreamer */
encoder->x264param.i_timebase_num = 1;
encoder->x264param.i_timebase_den = 1000000000;
#endif
/* apply option-string property */
if (encoder->option_string_prop && encoder->option_string_prop->len) {
GST_DEBUG_OBJECT (encoder, "Applying option-string: %s",
encoder->option_string_prop->str);
if (gst_x264_enc_parse_options (encoder,
encoder->option_string_prop->str) == FALSE) {
GST_DEBUG_OBJECT (encoder, "Your option-string contains errors.");
goto unlock_and_return;
}
}
/* apply user-set options */
if (encoder->option_string && encoder->option_string->len) {
GST_DEBUG_OBJECT (encoder, "Applying user-set options: %s",
encoder->option_string->str);
if (gst_x264_enc_parse_options (encoder,
encoder->option_string->str) == FALSE) {
GST_DEBUG_OBJECT (encoder, "Failed to parse internal option string. "
"This could be due to use of an old libx264 version. Option string "
"was: %s", encoder->option_string->str);
}
}
/* set up encoder parameters */
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;
}
/* FIXME 0.11 : 2s default keyframe interval seems excessive
* (10s is x264 default) */
encoder->x264param.i_keyint_max = encoder->keyint_max ? encoder->keyint_max :
(2 * encoder->fps_num / encoder->fps_den);
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.b_psnr = 0;
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;
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;
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;
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:
encoder->x264param.rc.b_stat_read = 0;
encoder->x264param.rc.b_stat_write = 1;
#ifdef X264_PRESETS
x264_param_apply_fastfirstpass (&encoder->x264param);
#else
encoder->x264param.i_frame_reference = 1;
encoder->x264param.analyse.b_transform_8x8 = 0;
encoder->x264param.analyse.inter = 0;
encoder->x264param.analyse.i_me_method = X264_ME_DIA;
encoder->x264param.analyse.i_subpel_refine =
MIN (2, encoder->x264param.analyse.i_subpel_refine);
encoder->x264param.analyse.i_trellis = 0;
encoder->x264param.analyse.b_fast_pskip = 1;
#endif /* X264_PRESETS */
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;
}
#if X264_BUILD >= 81 && X264_BUILD < 106
/* When vfr is disabled, libx264 ignores buffer timestamps. This causes
* issues with rate control in libx264 with our nanosecond timebase. This
* has been fixed upstream in libx264 but this workaround is required for
* pre-fix versions. */
if (!encoder->x264param.b_vfr_input) {
if (encoder->x264param.i_fps_num == 0) {
GST_ELEMENT_ERROR (encoder, STREAM, ENCODE,
("Constant framerate is required."),
("The framerate caps (%d/%d) indicate VFR but VFR is disabled in libx264. (Is the zerolatency tuning in use?)",
encoder->x264param.i_fps_num, encoder->x264param.i_fps_den));
return FALSE;
}
encoder->x264param.i_timebase_num = encoder->x264param.i_fps_den;
encoder->x264param.i_timebase_den = encoder->x264param.i_fps_num;
}
#endif
#ifdef X264_PRESETS
if (encoder->peer_profile) {
if (x264_param_apply_profile (&encoder->x264param, encoder->peer_profile))
GST_WARNING_OBJECT (encoder, "Bad downstream profile name: %s",
encoder->peer_profile);
} else if (encoder->profile) {
if (x264_param_apply_profile (&encoder->x264param,
x264_profile_names[encoder->profile - 1]))
GST_WARNING_OBJECT (encoder, "Bad profile name: %s",
x264_profile_names[encoder->profile - 1]);
}
#endif /* X264_PRESETS */
/* If using an intra profile, all frames are intra frames */
if (encoder->peer_intra_profile)
encoder->x264param.i_keyint_max = encoder->x264param.i_keyint_min = 1;
/* Enforce level limits if they were in the caps */
if (encoder->peer_level) {
encoder->x264param.i_level_idc = encoder->peer_level->level_idc;
encoder->x264param.rc.i_bitrate = MIN (encoder->x264param.rc.i_bitrate,
encoder->peer_level->bitrate);
encoder->x264param.rc.i_vbv_max_bitrate =
MIN (encoder->x264param.rc.i_vbv_max_bitrate,
encoder->peer_level->bitrate);
encoder->x264param.rc.i_vbv_buffer_size =
MIN (encoder->x264param.rc.i_vbv_buffer_size, encoder->peer_level->cpb);
encoder->x264param.analyse.i_mv_range =
MIN (encoder->x264param.analyse.i_mv_range,
encoder->peer_level->mv_range);
if (encoder->peer_level->frame_only) {
encoder->x264param.b_interlaced = FALSE;
#if X264_BUILD >= 95
encoder->x264param.b_fake_interlaced = FALSE;
#endif
}
}
encoder->reconfig = FALSE;
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;
unlock_and_return:
GST_OBJECT_UNLOCK (encoder);
return FALSE;
}
/* 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;
}
}
static gboolean
gst_x264_enc_set_profile_and_level (GstX264Enc * encoder, GstCaps * caps)
{
x264_nal_t *nal;
int i_nal;
int header_return;
gint sps_ni = 0;
guint8 *sps;
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 FALSE;
}
/* old x264 returns SEI, SPS and PPS, newer one has SEI last */
if (i_nal == 3 && nal[sps_ni].i_type != 7)
sps_ni = 1;
/* 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[sps_ni].p_payload;
#else
sps = nal[sps_ni].p_payload + 4;
/* skip NAL unit type */
sps++;
#endif
gst_codec_utils_h264_caps_set_level_and_profile (caps, sps, 3);
return TRUE;
}
/*
* 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;
gint sei_ni = 2, sps_ni = 0, pps_ni = 1;
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;
}
/* old x264 returns SEI, SPS and PPS, newer one has SEI last */
if (i_nal == 3 && nal[sps_ni].i_type != 7) {
sei_ni = 0;
sps_ni = 1;
pps_ni = 2;
}
/* x264 is expected to return an SEI (some identification info),
* and SPS and PPS */
if (i_nal != 3 || nal[sps_ni].i_type != 7 || nal[pps_ni].i_type != 8 ||
nal[sps_ni].i_payload < 4 || nal[pps_ni].i_payload < 1) {
GST_ELEMENT_ERROR (encoder, STREAM, ENCODE, (NULL),
("Unexpected x264 header."));
return NULL;
}
GST_MEMDUMP ("SEI", nal[sei_ni].p_payload, nal[sei_ni].i_payload);
GST_MEMDUMP ("SPS", nal[sps_ni].p_payload, nal[sps_ni].i_payload);
GST_MEMDUMP ("PPS", nal[pps_ni].p_payload, nal[pps_ni].i_payload);
/* nal payloads with emulation_prevention_three_byte, and some header data */
buffer_size = (nal[sps_ni].i_payload + nal[pps_ni].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[sps_ni].p_payload;
#else
sps = nal[sps_ni].p_payload + 4;
/* skip NAL unit type */
sps++;
#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[sps_ni]);
#else
nal_size = nal[sps_ni].i_payload - 4;
memcpy (buffer + i_size + 2, nal[sps_ni].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[pps_ni]);
#else
nal_size = nal[pps_ni].i_payload - 4;
memcpy (buffer + i_size + 2, nal[pps_ni].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);
GST_MEMDUMP ("header", GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
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;
GstStructure *structure;
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,
"pixel-aspect-ratio", GST_TYPE_FRACTION, encoder->par_num,
encoder->par_den, NULL);
structure = gst_caps_get_structure (outcaps, 0);
if (encoder->current_byte_stream == GST_X264_ENC_STREAM_FORMAT_FROM_PROPERTY) {
if (encoder->byte_stream) {
encoder->current_byte_stream = GST_X264_ENC_STREAM_FORMAT_BYTE_STREAM;
} else {
encoder->current_byte_stream = GST_X264_ENC_STREAM_FORMAT_AVC;
}
}
if (encoder->current_byte_stream == GST_X264_ENC_STREAM_FORMAT_AVC) {
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);
}
gst_structure_set (structure, "stream-format", G_TYPE_STRING, "avc", NULL);
} else {
gst_structure_set (structure, "stream-format", G_TYPE_STRING, "byte-stream",
NULL);
}
gst_structure_set (structure, "alignment", G_TYPE_STRING, "au", NULL);
if (!gst_x264_enc_set_profile_and_level (encoder, outcaps)) {
gst_caps_unref (outcaps);
return FALSE;
}
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));
GstVideoFormat format;
gint width, height;
gint fps_num, fps_den;
gint par_num, par_den;
gint i;
GstCaps *peer_caps;
const GstCaps *template_caps;
GstCaps *allowed_caps = NULL;
gboolean level_ok = TRUE;
/* get info from caps */
if (!gst_video_format_parse_caps (caps, &format, &width, &height))
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->format = format;
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. Offsets will be for Y, U, V so we
* can just feed YV12 as I420 to the decoder 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);
}
encoder->peer_profile = NULL;
encoder->peer_intra_profile = FALSE;
encoder->peer_level = NULL;
/* FIXME: Remove THIS bit in 0.11 when the profile property is removed */
peer_caps = gst_pad_peer_get_caps_reffed (encoder->srcpad);
if (peer_caps) {
gint i;
gboolean has_profile_or_level_or_format = FALSE;
for (i = 0; i < gst_caps_get_size (peer_caps); i++) {
GstStructure *s = gst_caps_get_structure (peer_caps, i);
if (gst_structure_has_name (s, "video/x-h264") &&
(gst_structure_has_field (s, "profile") ||
gst_structure_has_field (s, "level") ||
gst_structure_has_field (s, "stream-format"))) {
has_profile_or_level_or_format = TRUE;
break;
}
}
if (has_profile_or_level_or_format) {
template_caps = gst_pad_get_pad_template_caps (encoder->srcpad);
allowed_caps = gst_caps_intersect (peer_caps, template_caps);
}
gst_caps_unref (peer_caps);
}
/* Replace the bit since FIXME with this
* allowed_caps = gst_pad_get_allowed_caps (encoder->srcpad);
*/
if (allowed_caps) {
GstStructure *s;
const gchar *profile;
const gchar *level;
const gchar *stream_format;
if (gst_caps_is_empty (allowed_caps)) {
gst_caps_unref (allowed_caps);
return FALSE;
}
allowed_caps = gst_caps_make_writable (allowed_caps);
gst_pad_fixate_caps (encoder->srcpad, allowed_caps);
s = gst_caps_get_structure (allowed_caps, 0);
profile = gst_structure_get_string (s, "profile");
if (profile) {
/* FIXME - if libx264 ever adds support for FMO, ASO or redundant slices
* make sure constrained profile has a separate case which disables
* those */
if (!strcmp (profile, "constrained-baseline") ||
!strcmp (profile, "baseline")) {
encoder->peer_profile = "baseline";
} else if (!strcmp (profile, "high-10-intra")) {
encoder->peer_intra_profile = TRUE;
encoder->peer_profile = "high10";
} else if (!strcmp (profile, "high-10")) {
encoder->peer_profile = "high10";
} else if (!strcmp (profile, "high")) {
encoder->peer_profile = "high";
} else if (!strcmp (profile, "main")) {
encoder->peer_profile = "main";
} else {
g_assert_not_reached ();
}
}
level = gst_structure_get_string (s, "level");
if (level) {
int level_idc = gst_codec_utils_h264_get_level_idc (level);
if (level_idc) {
gint i;
for (i = 0; x264_levels[i].level_idc; i++) {
if (level_idc == x264_levels[i].level_idc) {
int mb_width = (width + 15) / 16;
int mb_height = (height + 15) / 16;
int mbs = mb_width * mb_height;
if (x264_levels[i].frame_size < mbs ||
x264_levels[i].frame_size * 8 < mb_width * mb_width ||
x264_levels[i].frame_size * 8 < mb_height * mb_height) {
GST_WARNING_OBJECT (encoder,
"Frame size larger than level %s allows", level);
level_ok = FALSE;
break;
}
if (fps_den &&
x264_levels[i].mbps < (gint64) mbs * fps_num / fps_den) {
GST_WARNING_OBJECT (encoder,
"Macroblock rate higher than level %s allows", level);
level_ok = FALSE;
break;
}
encoder->peer_level = &x264_levels[i];
break;
}
}
}
}
stream_format = gst_structure_get_string (s, "stream-format");
encoder->current_byte_stream = GST_X264_ENC_STREAM_FORMAT_FROM_PROPERTY;
if (stream_format) {
if (!strcmp (stream_format, "avc")) {
encoder->current_byte_stream = GST_X264_ENC_STREAM_FORMAT_AVC;
g_string_append_printf (encoder->option_string, ":annexb=0");
} else if (!strcmp (stream_format, "byte-stream")) {
encoder->current_byte_stream = GST_X264_ENC_STREAM_FORMAT_BYTE_STREAM;
g_string_append_printf (encoder->option_string, ":annexb=1");
} else {
/* means we have both in caps and _FROM_PROPERTY should be the option */
}
}
gst_caps_unref (allowed_caps);
}
if (!level_ok)
return FALSE;
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 GstCaps *
gst_x264_enc_sink_get_caps (GstPad * pad)
{
GstX264Enc *encoder;
GstPad *peer;
GstCaps *caps;
encoder = GST_X264_ENC (gst_pad_get_parent (pad));
if (!encoder)
return gst_caps_new_empty ();
peer = gst_pad_get_peer (encoder->srcpad);
if (peer) {
const GstCaps *templcaps;
GstCaps *peercaps;
guint i, n;
peercaps = gst_pad_get_caps (peer);
/* Translate peercaps to YUV */
peercaps = gst_caps_make_writable (peercaps);
n = gst_caps_get_size (peercaps);
for (i = 0; i < n; i++) {
GstStructure *s = gst_caps_get_structure (peercaps, i);
gst_structure_set_name (s, "video/x-raw-yuv");
gst_structure_remove_field (s, "stream-format");
gst_structure_remove_field (s, "alignment");
}
templcaps = gst_pad_get_pad_template_caps (pad);
caps = gst_caps_intersect (peercaps, templcaps);
gst_caps_unref (peercaps);
gst_object_unref (peer);
peer = NULL;
} else {
caps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
}
/* If we already have caps return them */
if (GST_PAD_CAPS (pad) && gst_caps_can_intersect (GST_PAD_CAPS (pad), caps)) {
GstCaps *tmpcaps = gst_caps_copy (GST_PAD_CAPS (pad));
gst_caps_merge (tmpcaps, caps);
caps = tmpcaps;
}
gst_object_unref (encoder);
return caps;
}
static gboolean
gst_x264_enc_src_event (GstPad * pad, GstEvent * event)
{
gboolean ret = TRUE;
GstX264Enc *encoder;
gboolean forward = TRUE;
encoder = GST_X264_ENC (gst_pad_get_parent (pad));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_CUSTOM_UPSTREAM:{
guint count;
gboolean all_headers;
if (!gst_video_event_is_force_key_unit (event))
goto out;
GST_OBJECT_LOCK (encoder);
gst_video_event_parse_upstream_force_key_unit (event,
&encoder->pending_key_unit_ts, &all_headers, &count);
GST_INFO_OBJECT (encoder, "received upstream force-key-unit event, "
"seqnum %d running_time %" GST_TIME_FORMAT " all_headers %d count %d",
gst_event_get_seqnum (event),
GST_TIME_ARGS (encoder->pending_key_unit_ts), all_headers, count);
gst_event_replace (&encoder->force_key_unit_event, event);
gst_event_unref (event);
GST_OBJECT_UNLOCK (encoder);
forward = FALSE;
break;
}
default:
break;
}
out:
if (forward)
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_NEWSEGMENT:
{
gboolean update;
gdouble rate, applied_rate;
GstFormat format;
gint64 start, stop, position;
gst_event_parse_new_segment_full (event, &update, &rate, &applied_rate,
&format, &start, &stop, &position);
gst_segment_set_newsegment (&encoder->segment, update, rate, format,
start, stop, position);
break;
}
case GST_EVENT_FLUSH_STOP:
gst_segment_init (&encoder->segment, GST_FORMAT_UNDEFINED);
break;
case GST_EVENT_EOS:
gst_x264_enc_flush_frames (encoder, TRUE);
break;
case GST_EVENT_TAG:{
GstTagList *tags = NULL;
event =
GST_EVENT (gst_mini_object_make_writable (GST_MINI_OBJECT (event)));
gst_event_parse_tag (event, &tags);
/* drop codec/video-codec and replace encoder/encoder-version */
gst_tag_list_remove_tag (tags, GST_TAG_VIDEO_CODEC);
gst_tag_list_remove_tag (tags, GST_TAG_CODEC);
gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE, GST_TAG_ENCODER, "x264",
GST_TAG_ENCODER_VERSION, X264_BUILD, NULL);
/* push is done below */
break;
/* no flushing if flush received,
* buffers in encoder are considered (in the) past */
}
case GST_EVENT_CUSTOM_DOWNSTREAM:{
guint count;
gboolean all_headers;
if (!gst_video_event_is_force_key_unit (event))
break;
GST_OBJECT_LOCK (encoder);
gst_video_event_parse_downstream_force_key_unit (event, NULL, NULL,
&encoder->pending_key_unit_ts, &all_headers, &count);
GST_INFO_OBJECT (encoder, "received downstream force-key-unit event, "
"seqnum %d running_time %" GST_TIME_FORMAT " all_headers %d count %d",
gst_event_get_seqnum (event),
GST_TIME_ARGS (encoder->pending_key_unit_ts), all_headers, count);
gst_event_replace (&encoder->force_key_unit_event, event);
gst_event_unref (event);
GST_OBJECT_UNLOCK (encoder);
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 = 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 GstEvent *
check_pending_key_unit_event (GstEvent * pending_event, GstSegment * segment,
GstClockTime timestamp, GstClockTime pending_key_unit_ts)
{
GstClockTime running_time, stream_time;
gboolean all_headers;
guint count;
GstEvent *event = NULL;
g_return_val_if_fail (pending_event != NULL, NULL);
g_return_val_if_fail (segment != NULL, NULL);
if (pending_event == NULL || timestamp == GST_CLOCK_TIME_NONE)
goto out;
running_time = gst_segment_to_running_time (segment,
GST_FORMAT_TIME, timestamp);
GST_INFO ("now %" GST_TIME_FORMAT " wanted %" GST_TIME_FORMAT,
GST_TIME_ARGS (running_time), GST_TIME_ARGS (pending_key_unit_ts));
if (running_time < pending_key_unit_ts)
goto out;
stream_time = gst_segment_to_stream_time (segment,
GST_FORMAT_TIME, timestamp);
gst_video_event_parse_upstream_force_key_unit (pending_event,
NULL, &all_headers, &count);
event =
gst_video_event_new_downstream_force_key_unit (timestamp, stream_time,
running_time, all_headers, count);
gst_event_set_seqnum (event, gst_event_get_seqnum (pending_event));
out:
return event;
}
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 duration;
guint8 *data;
GstEvent *event = NULL;
if (G_UNLIKELY (encoder->x264enc == NULL))
return GST_FLOW_NOT_NEGOTIATED;
GST_OBJECT_LOCK (encoder);
if (encoder->reconfig) {
encoder->reconfig = FALSE;
if (x264_encoder_reconfig (encoder->x264enc, &encoder->x264param) < 0)
GST_WARNING_OBJECT (encoder, "Could not reconfigure");
}
if (encoder->pending_key_unit_ts != GST_CLOCK_TIME_NONE && pic_in != NULL) {
event = check_pending_key_unit_event (encoder->force_key_unit_event,
&encoder->segment, pic_in->i_pts, encoder->pending_key_unit_ts);
if (event) {
encoder->pending_key_unit_ts = GST_CLOCK_TIME_NONE;
gst_event_replace (&encoder->force_key_unit_event, NULL);
#ifdef FORCE_INTRA_API
if (encoder->intra_refresh)
x264_encoder_intra_refresh (encoder->x264enc);
else
pic_in->i_type = X264_TYPE_IDR;
#else
pic_in->i_type = X264_TYPE_IDR;
#endif
}
}
GST_OBJECT_UNLOCK (encoder);
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));
ret = GST_FLOW_ERROR;
goto out;
}
if (!*i_nal) {
ret = GST_FLOW_OK;
goto out;
}
#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]);
g_assert (encoder->current_byte_stream !=
GST_X264_ENC_STREAM_FORMAT_FROM_PROPERTY);
if (encoder->current_byte_stream == GST_X264_ENC_STREAM_FORMAT_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) {
duration = GST_BUFFER_DURATION (in_buf);
gst_buffer_unref (in_buf);
} else {
GST_ELEMENT_ERROR (encoder, STREAM, ENCODE, (NULL),
("Timestamp queue empty."));
ret = GST_FLOW_ERROR;
goto out;
}
if (!send) {
ret = GST_FLOW_OK;
goto out;
}
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)
goto out;
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;
#ifdef X264_INTRA_REFRESH
if (pic_out.b_keyframe) {
#else
if (pic_out.i_type == X264_TYPE_IDR) {
#endif
GST_BUFFER_FLAG_UNSET (out_buf, GST_BUFFER_FLAG_DELTA_UNIT);
} else {
GST_BUFFER_FLAG_SET (out_buf, GST_BUFFER_FLAG_DELTA_UNIT);
}
if (event)
gst_pad_push_event (encoder->srcpad, gst_event_ref (event));
ret = gst_pad_push (encoder->srcpad, out_buf);
out:
if (event)
gst_event_unref (event);
return ret;
}
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);
#ifdef X264_DELAYED_FRAMES_API
} while (flow_ret == GST_FLOW_OK
&& x264_encoder_delayed_frames (encoder->x264enc) > 0);
#else
/* note that this doesn't flush all frames for > 1 delayed frame */
} while (flow_ret == GST_FLOW_OK && i_nal > 0);
#endif
/* 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_reconfig (GstX264Enc * encoder)
{
switch (encoder->pass) {
case GST_X264_ENC_PASS_QUAL:
encoder->x264param.rc.f_rf_constant = encoder->quantizer;
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;
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_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;
break;
}
encoder->reconfig = TRUE;
}
static void
gst_x264_enc_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstX264Enc *encoder;
GstState state;
const gchar *partitions = NULL;
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) &&
!(pspec->flags & GST_PARAM_MUTABLE_PLAYING))
goto wrong_state;
switch (prop_id) {
case ARG_PASS:
encoder->pass = g_value_get_enum (value);
break;
case ARG_QUANTIZER:
encoder->quantizer = g_value_get_uint (value);
gst_x264_enc_reconfig (encoder);
break;
case ARG_BITRATE:
encoder->bitrate = g_value_get_uint (value);
gst_x264_enc_reconfig (encoder);
break;
case ARG_VBV_BUF_CAPACITY:
encoder->vbv_buf_capacity = g_value_get_uint (value);
gst_x264_enc_reconfig (encoder);
break;
case ARG_SPEED_PRESET:
encoder->speed_preset = g_value_get_enum (value);
break;
case ARG_PSY_TUNE:
encoder->psy_tune = g_value_get_enum (value);
break;
case ARG_TUNE:
encoder->tune = g_value_get_flags (value);
break;
case ARG_PROFILE:
encoder->profile = g_value_get_enum (value);
break;
case ARG_OPTION_STRING:
g_string_assign (encoder->option_string_prop, g_value_get_string (value));
break;
case ARG_THREADS:
encoder->threads = g_value_get_uint (value);
g_string_append_printf (encoder->option_string, ":threads=%d",
encoder->threads);
break;
case ARG_SLICED_THREADS:
encoder->sliced_threads = g_value_get_boolean (value);
g_string_append_printf (encoder->option_string, ":sliced-threads=%d",
encoder->sliced_threads);
break;
case ARG_SYNC_LOOKAHEAD:
encoder->sync_lookahead = g_value_get_int (value);
g_string_append_printf (encoder->option_string, ":sync-lookahead=%d",
encoder->sync_lookahead);
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);
g_string_append_printf (encoder->option_string, ":stats=%s",
encoder->mp_cache_file);
break;
case ARG_BYTE_STREAM:
encoder->byte_stream = g_value_get_boolean (value);
g_string_append_printf (encoder->option_string, ":annexb=%d",
encoder->byte_stream);
break;
case ARG_INTRA_REFRESH:
encoder->intra_refresh = g_value_get_boolean (value);
g_string_append_printf (encoder->option_string, ":intra-refresh=%d",
encoder->intra_refresh);
break;
case ARG_ME:
encoder->me = g_value_get_enum (value);
g_string_append_printf (encoder->option_string, ":me=%s",
x264_motion_est_names[encoder->me]);
break;
case ARG_SUBME:
encoder->subme = g_value_get_uint (value);
g_string_append_printf (encoder->option_string, ":subme=%d",
encoder->subme);
break;
case ARG_ANALYSE:
encoder->analyse = g_value_get_flags (value);
partitions = gst_x264_enc_build_partitions (encoder->analyse);
if (partitions) {
g_string_append_printf (encoder->option_string, ":partitions=%s",
partitions);
g_free ((gpointer) partitions);
}
break;
case ARG_DCT8x8:
encoder->dct8x8 = g_value_get_boolean (value);
g_string_append_printf (encoder->option_string, ":8x8dct=%d",
encoder->dct8x8);
break;
case ARG_REF:
encoder->ref = g_value_get_uint (value);
g_string_append_printf (encoder->option_string, ":ref=%d", encoder->ref);
break;
case ARG_BFRAMES:
encoder->bframes = g_value_get_uint (value);
g_string_append_printf (encoder->option_string, ":bframes=%d",
encoder->bframes);
break;
case ARG_B_ADAPT:
encoder->b_adapt = g_value_get_boolean (value);
g_string_append_printf (encoder->option_string, ":b-adapt=%d",
encoder->b_adapt);
break;
case ARG_B_PYRAMID:
encoder->b_pyramid = g_value_get_boolean (value);
#ifdef X264_B_PYRAMID
g_string_append_printf (encoder->option_string, ":b-pyramid=%s",
x264_b_pyramid_names[encoder->b_pyramid]);
#else
g_string_append_printf (encoder->option_string, ":b-pyramid=%d",
encoder->b_pyramid);
#endif /* X264_B_PYRAMID */
break;
case ARG_WEIGHTB:
encoder->weightb = g_value_get_boolean (value);
g_string_append_printf (encoder->option_string, ":weightb=%d",
encoder->weightb);
break;
case ARG_SPS_ID:
encoder->sps_id = g_value_get_uint (value);
g_string_append_printf (encoder->option_string, ":sps-id=%d",
encoder->sps_id);
break;
case ARG_AU_NALU:
encoder->au_nalu = g_value_get_boolean (value);
g_string_append_printf (encoder->option_string, ":aud=%d",
encoder->au_nalu);
break;
case ARG_TRELLIS:
encoder->trellis = g_value_get_boolean (value);
g_string_append_printf (encoder->option_string, ":trellis=%d",
encoder->trellis);
break;
case ARG_KEYINT_MAX:
encoder->keyint_max = g_value_get_uint (value);
g_string_append_printf (encoder->option_string, ":keyint=%d",
encoder->keyint_max);
break;
case ARG_CABAC:
encoder->cabac = g_value_get_boolean (value);
g_string_append_printf (encoder->option_string, ":cabac=%d",
encoder->cabac);
break;
case ARG_QP_MIN:
encoder->qp_min = g_value_get_uint (value);
g_string_append_printf (encoder->option_string, ":qpmin=%d",
encoder->qp_min);
break;
case ARG_QP_MAX:
encoder->qp_max = g_value_get_uint (value);
g_string_append_printf (encoder->option_string, ":qpmax=%d",
encoder->qp_max);
break;
case ARG_QP_STEP:
encoder->qp_step = g_value_get_uint (value);
g_string_append_printf (encoder->option_string, ":qpstep=%d",
encoder->qp_step);
break;
case ARG_IP_FACTOR:
encoder->ip_factor = g_value_get_float (value);
g_string_append_printf (encoder->option_string, ":ip-factor=%f",
encoder->ip_factor);
break;
case ARG_PB_FACTOR:
encoder->pb_factor = g_value_get_float (value);
g_string_append_printf (encoder->option_string, ":pb-factor=%f",
encoder->pb_factor);
break;
case ARG_RC_MB_TREE:
encoder->mb_tree = g_value_get_boolean (value);
g_string_append_printf (encoder->option_string, ":mbtree=%d",
encoder->mb_tree);
break;
case ARG_RC_LOOKAHEAD:
encoder->rc_lookahead = g_value_get_int (value);
g_string_append_printf (encoder->option_string, ":rc-lookahead=%d",
encoder->rc_lookahead);
break;
case ARG_NR:
encoder->noise_reduction = g_value_get_uint (value);
g_string_append_printf (encoder->option_string, ":nr=%d",
encoder->noise_reduction);
break;
case ARG_INTERLACED:
encoder->interlaced = g_value_get_boolean (value);
g_string_append_printf (encoder->option_string, ":interlaced=%d",
encoder->interlaced);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
GST_OBJECT_UNLOCK (encoder);
return;
/* ERROR */
wrong_state:
{
GST_WARNING_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_SLICED_THREADS:
g_value_set_boolean (value, encoder->sliced_threads);
break;
case ARG_SYNC_LOOKAHEAD:
g_value_set_int (value, encoder->sync_lookahead);
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_INTRA_REFRESH:
g_value_set_boolean (value, encoder->intra_refresh);
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_AU_NALU:
g_value_set_boolean (value, encoder->au_nalu);
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_RC_MB_TREE:
g_value_set_boolean (value, encoder->mb_tree);
break;
case ARG_RC_LOOKAHEAD:
g_value_set_int (value, encoder->rc_lookahead);
break;
case ARG_NR:
g_value_set_uint (value, encoder->noise_reduction);
break;
case ARG_INTERLACED:
g_value_set_boolean (value, encoder->interlaced);
break;
case ARG_SPEED_PRESET:
g_value_set_enum (value, encoder->speed_preset);
break;
case ARG_PSY_TUNE:
g_value_set_enum (value, encoder->psy_tune);
break;
case ARG_TUNE:
g_value_set_flags (value, encoder->tune);
break;
case ARG_PROFILE:
g_value_set_enum (value, encoder->profile);
break;
case ARG_OPTION_STRING:
g_value_set_string (value, encoder->option_string_prop->str);
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)
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