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gstreamer/ext/x264/gstx264enc.c
Alessandro Decina 4322fd0752 x264enc: implement force-key-unit API
2012-01-26 19:44:05 +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, 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) {
if (!strcmp (profile, "constrained-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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