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gstreamer/ext/x264/gstx264enc.c
Seungha Yang 7e63943361 x264enc: Avoid format decision per frame 
Avoid switch/case per frame for format decision and detect the format
only if where it could be changed. Note that, whenever encoder->input_state
is changed, gst_x264_enc_init_encoder() is called.

https://bugzilla.gnome.org/show_bug.cgi?id=797164
2018-09-22 12:42:34 +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>
* Copyright (C) 2016 Sebastian Dröge <sebastian@centricular.com>
*
* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, 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 high 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. You can also work around
* this problem by setting the tune=zerolatency property, but this will affect
* overall encoding quality so may not be appropriate for your use case.
* </note>
*
* <refsect2>
* <title>Example pipeline</title>
* |[
* gst-launch-1.0 -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. You should ideally never put H264 into an AVI
* container (or really anything else, for that matter) - use Matroska or
* MP4/QuickTime or MPEG-TS instead.
* |[
* gst-launch-1.0 -v videotestsrc num-buffers=1000 ! x264enc pass=quant ! \
* matroskamux ! filesink location=videotestsrc.mkv
* ]| This example pipeline will encode a test video source to H264 using fixed
* quantization, and muxes it in a Matroska container.
* |[
* gst-launch-1.0 -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-1.0 -v videotestsrc num-buffers=1000 ! tee name=t ! queue ! videoconvert ! autovideosink \
* 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>
#include <gst/video/gstvideometa.h>
#include <gst/video/gstvideopool.h>
#include <string.h>
#include <stdlib.h>
#include <gmodule.h>
GST_DEBUG_CATEGORY_STATIC (x264_enc_debug);
#define GST_CAT_DEFAULT x264_enc_debug
struct _GstX264EncVTable
{
GModule *module;
#if X264_BUILD < 153
const int *x264_bit_depth;
#endif
const int *x264_chroma_format;
void (*x264_encoder_close) (x264_t *);
int (*x264_encoder_delayed_frames) (x264_t *);
int (*x264_encoder_encode) (x264_t *, x264_nal_t ** pp_nal, int *pi_nal,
x264_picture_t * pic_in, x264_picture_t * pic_out);
int (*x264_encoder_headers) (x264_t *, x264_nal_t ** pp_nal, int *pi_nal);
void (*x264_encoder_intra_refresh) (x264_t *);
int (*x264_encoder_maximum_delayed_frames) (x264_t *);
x264_t *(*x264_encoder_open) (x264_param_t *);
int (*x264_encoder_reconfig) (x264_t *, x264_param_t *);
const x264_level_t (*x264_levels)[];
void (*x264_param_apply_fastfirstpass) (x264_param_t *);
int (*x264_param_apply_profile) (x264_param_t *, const char *);
int (*x264_param_default_preset) (x264_param_t *, const char *preset,
const char *tune);
int (*x264_param_parse) (x264_param_t *, const char *name, const char *value);
};
static GstX264EncVTable default_vtable;
static GstX264EncVTable *vtable_8bit = NULL, *vtable_10bit = NULL;
#define LOAD_SYMBOL(name) G_STMT_START { \
if (!g_module_symbol (module, #name, (gpointer *) &vtable->name)) { \
GST_ERROR ("Failed to load '" #name "' from '%s'", filename); \
goto error; \
} \
} G_STMT_END;
#ifdef HAVE_X264_ADDITIONAL_LIBRARIES
static GstX264EncVTable *
load_x264 (const gchar * filename)
{
GModule *module;
GstX264EncVTable *vtable;
module = g_module_open (filename, G_MODULE_BIND_LOCAL);
if (!module) {
GST_ERROR ("Failed to load '%s'", filename);
return NULL;
}
vtable = g_new0 (GstX264EncVTable, 1);
vtable->module = module;
if (!g_module_symbol (module, G_STRINGIFY (x264_encoder_open),
(gpointer *) & vtable->x264_encoder_open)) {
GST_ERROR ("Failed to load '" G_STRINGIFY (x264_encoder_open)
"' from '%s'. Incompatible version?", filename);
goto error;
}
#if X264_BUILD < 153
LOAD_SYMBOL (x264_bit_depth);
#endif
LOAD_SYMBOL (x264_chroma_format);
LOAD_SYMBOL (x264_encoder_close);
LOAD_SYMBOL (x264_encoder_delayed_frames);
LOAD_SYMBOL (x264_encoder_encode);
LOAD_SYMBOL (x264_encoder_headers);
LOAD_SYMBOL (x264_encoder_intra_refresh);
LOAD_SYMBOL (x264_encoder_maximum_delayed_frames);
LOAD_SYMBOL (x264_encoder_reconfig);
LOAD_SYMBOL (x264_levels);
LOAD_SYMBOL (x264_param_apply_fastfirstpass);
LOAD_SYMBOL (x264_param_apply_profile);
LOAD_SYMBOL (x264_param_default_preset);
LOAD_SYMBOL (x264_param_parse);
return vtable;
error:
g_module_close (vtable->module);
g_free (vtable);
return NULL;
}
static void
unload_x264 (GstX264EncVTable * vtable)
{
if (vtable->module) {
g_module_close (vtable->module);
g_free (vtable);
}
}
#endif
#undef LOAD_SYMBOL
static gboolean
gst_x264_enc_add_x264_chroma_format (GstStructure * s,
gboolean allow_420, gboolean allow_422, gboolean allow_444)
{
GValue fmts = G_VALUE_INIT;
GValue fmt = G_VALUE_INIT;
gboolean ret = FALSE;
g_value_init (&fmts, GST_TYPE_LIST);
g_value_init (&fmt, G_TYPE_STRING);
if (vtable_8bit) {
gint chroma_format = *vtable_8bit->x264_chroma_format;
GST_INFO ("8-bit depth supported");
if ((chroma_format == 0 || chroma_format == X264_CSP_I444) && allow_444) {
g_value_set_string (&fmt, "Y444");
gst_value_list_append_value (&fmts, &fmt);
}
if ((chroma_format == 0 || chroma_format == X264_CSP_I422) && allow_422) {
g_value_set_string (&fmt, "Y42B");
gst_value_list_append_value (&fmts, &fmt);
}
if ((chroma_format == 0 || chroma_format == X264_CSP_I420) && allow_420) {
g_value_set_string (&fmt, "I420");
gst_value_list_append_value (&fmts, &fmt);
g_value_set_string (&fmt, "YV12");
gst_value_list_append_value (&fmts, &fmt);
g_value_set_string (&fmt, "NV12");
gst_value_list_append_value (&fmts, &fmt);
}
}
if (vtable_10bit) {
gint chroma_format = *vtable_10bit->x264_chroma_format;
GST_INFO ("10-bit depth supported");
if ((chroma_format == 0 || chroma_format == X264_CSP_I444) && allow_444) {
if (G_BYTE_ORDER == G_LITTLE_ENDIAN)
g_value_set_string (&fmt, "Y444_10LE");
else
g_value_set_string (&fmt, "Y444_10BE");
gst_value_list_append_value (&fmts, &fmt);
}
if ((chroma_format == 0 || chroma_format == X264_CSP_I422) && allow_422) {
if (G_BYTE_ORDER == G_LITTLE_ENDIAN)
g_value_set_string (&fmt, "I422_10LE");
else
g_value_set_string (&fmt, "I422_10BE");
gst_value_list_append_value (&fmts, &fmt);
}
if ((chroma_format == 0 || chroma_format == X264_CSP_I420) && allow_420) {
if (G_BYTE_ORDER == G_LITTLE_ENDIAN)
g_value_set_string (&fmt, "I420_10LE");
else
g_value_set_string (&fmt, "I420_10BE");
gst_value_list_append_value (&fmts, &fmt);
}
}
if (gst_value_list_get_size (&fmts) != 0) {
gst_structure_take_value (s, "format", &fmts);
ret = TRUE;
} else {
g_value_unset (&fmts);
}
g_value_unset (&fmt);
return ret;
}
#if X264_BUILD < 153
static gboolean
load_x264_libraries (void)
{
if (*default_vtable.x264_bit_depth == 8) {
vtable_8bit = &default_vtable;
} else if (*default_vtable.x264_bit_depth == 10) {
vtable_10bit = &default_vtable;
}
#ifdef HAVE_X264_ADDITIONAL_LIBRARIES
{
gchar **libraries = g_strsplit (HAVE_X264_ADDITIONAL_LIBRARIES, ":", -1);
gchar **p = libraries;
while (*p && (!vtable_8bit || !vtable_10bit)) {
GstX264EncVTable *vtable = load_x264 (*p);
if (vtable) {
if (!vtable_8bit && *vtable->x264_bit_depth == 8) {
vtable_8bit = vtable;
} else if (!vtable_10bit && *vtable->x264_bit_depth == 10) {
vtable_10bit = vtable;
} else {
unload_x264 (vtable);
}
}
p++;
}
g_strfreev (libraries);
}
#endif
if (!vtable_8bit && !vtable_10bit)
return FALSE;
return TRUE;
}
#else /* X264_BUILD >= 153 */
static gboolean
load_x264_libraries (void)
{
#if X264_BIT_DEPTH == 0 /* all */
vtable_8bit = &default_vtable;
vtable_10bit = &default_vtable;
#elif X264_BIT_DEPTH == 8
vtable_8bit = &default_vtable;
#elif X264_BIT_DEPTH == 10
vtable_10bit = &default_vtable;
#else
#error "unexpected X264_BIT_DEPTH value"
#endif
#ifdef HAVE_X264_ADDITIONAL_LIBRARIES
GST_WARNING ("Ignoring configured additional libraries %s, using libx264 "
"version enabled for multiple bit depths",
HAVE_X264_ADDITIONAL_LIBRARIES);
#endif
return TRUE;
}
#endif
enum
{
ARG_0,
ARG_THREADS,
ARG_SLICED_THREADS,
ARG_SYNC_LOOKAHEAD,
ARG_PASS,
ARG_QUANTIZER,
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_SPEED_PRESET,
ARG_PSY_TUNE,
ARG_TUNE,
ARG_FRAME_PACKING,
ARG_INSERT_VUI,
};
#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_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_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 */
#define ARG_FRAME_PACKING_DEFAULT -1 /* automatic (none, or from input caps) */
#define ARG_INSERT_VUI_DEFAULT TRUE
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", "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;
}
#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", "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);
}
#define GST_X264_ENC_FRAME_PACKING_TYPE (gst_x264_enc_frame_packing_get_type())
static GType
gst_x264_enc_frame_packing_get_type (void)
{
static GType fpa_type = 0;
static const GEnumValue fpa_types[] = {
{-1, "Automatic (use incoming video information)", "auto"},
{0, "checkerboard - Left and Right pixels alternate in a checkerboard pattern", "checkerboard"},
{1, "column interleaved - Alternating pixel columns represent Left and Right views", "column-interleaved"},
{2, "row interleaved - Alternating pixel rows represent Left and Right views", "row-interleaved"},
{3, "side by side - The left half of the frame contains the Left eye view, the right half the Right eye view", "side-by-side"},
{4, "top bottom - L is on top, R on bottom", "top-bottom"},
{5, "frame interleaved - Each frame contains either Left or Right view alternately", "frame-interleaved"},
{0, NULL, NULL}
};
if (!fpa_type) {
fpa_type = g_enum_register_static ("GstX264EncFramePacking", fpa_types);
}
return fpa_type;
}
static gint
gst_x264_enc_mview_mode_to_frame_packing (GstVideoMultiviewMode mode)
{
switch (mode) {
case GST_VIDEO_MULTIVIEW_MODE_CHECKERBOARD:
return 0;
case GST_VIDEO_MULTIVIEW_MODE_COLUMN_INTERLEAVED:
return 1;
case GST_VIDEO_MULTIVIEW_MODE_ROW_INTERLEAVED:
return 2;
case GST_VIDEO_MULTIVIEW_MODE_SIDE_BY_SIDE:
return 3;
case GST_VIDEO_MULTIVIEW_MODE_TOP_BOTTOM:
return 4;
case GST_VIDEO_MULTIVIEW_MODE_FRAME_BY_FRAME:
return 5;
default:
break;
}
return -1;
}
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) { avc, byte-stream }, "
"alignment = (string) au, "
"profile = (string) { high-4:4:4, high-4:2:2, high-10, high, main,"
" baseline, constrained-baseline, high-4:4:4-intra, high-4:2:2-intra,"
" high-10-intra }")
);
static void gst_x264_enc_finalize (GObject * object);
static gboolean gst_x264_enc_start (GstVideoEncoder * encoder);
static gboolean gst_x264_enc_stop (GstVideoEncoder * encoder);
static gboolean gst_x264_enc_flush (GstVideoEncoder * encoder);
static gboolean gst_x264_enc_init_encoder (GstX264Enc * encoder);
static void gst_x264_enc_close_encoder (GstX264Enc * encoder);
static GstFlowReturn gst_x264_enc_finish (GstVideoEncoder * encoder);
static GstFlowReturn gst_x264_enc_handle_frame (GstVideoEncoder * encoder,
GstVideoCodecFrame * frame);
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, GstVideoCodecFrame * input_frame, int *i_nal,
gboolean send);
static gboolean gst_x264_enc_set_format (GstVideoEncoder * video_enc,
GstVideoCodecState * state);
static gboolean gst_x264_enc_propose_allocation (GstVideoEncoder * encoder,
GstQuery * query);
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);
#define gst_x264_enc_parent_class parent_class
G_DEFINE_TYPE_WITH_CODE (GstX264Enc, gst_x264_enc, GST_TYPE_VIDEO_ENCODER,
G_IMPLEMENT_INTERFACE (GST_TYPE_PRESET, NULL));
/* 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
check_formats (const gchar * str, gboolean * has_420, gboolean * has_422,
gboolean * has_444)
{
if (g_str_has_prefix (str, "high-4:4:4"))
*has_444 = TRUE;
else if (g_str_has_prefix (str, "high-4:2:2"))
*has_422 = TRUE;
else
*has_420 = TRUE;
}
/* allowed input caps depending on whether libx264 was built for 8 or 10 bits */
static GstCaps *
gst_x264_enc_sink_getcaps (GstVideoEncoder * enc, GstCaps * filter)
{
GstCaps *supported_incaps;
GstCaps *allowed;
GstCaps *filter_caps, *fcaps;
gint i, j, k;
supported_incaps =
gst_pad_get_pad_template_caps (GST_VIDEO_ENCODER_SINK_PAD (enc));
/* Allow downstream to specify width/height/framerate/PAR constraints
* and forward them upstream for video converters to handle
*/
allowed = gst_pad_get_allowed_caps (enc->srcpad);
if (!allowed || gst_caps_is_empty (allowed) || gst_caps_is_any (allowed)) {
fcaps = supported_incaps;
goto done;
}
GST_LOG_OBJECT (enc, "template caps %" GST_PTR_FORMAT, supported_incaps);
GST_LOG_OBJECT (enc, "allowed caps %" GST_PTR_FORMAT, allowed);
filter_caps = gst_caps_new_empty ();
for (i = 0; i < gst_caps_get_size (supported_incaps); i++) {
GQuark q_name =
gst_structure_get_name_id (gst_caps_get_structure (supported_incaps,
i));
for (j = 0; j < gst_caps_get_size (allowed); j++) {
const GstStructure *allowed_s = gst_caps_get_structure (allowed, j);
const GValue *val;
GstStructure *s;
s = gst_structure_new_id_empty (q_name);
if ((val = gst_structure_get_value (allowed_s, "width")))
gst_structure_set_value (s, "width", val);
if ((val = gst_structure_get_value (allowed_s, "height")))
gst_structure_set_value (s, "height", val);
if ((val = gst_structure_get_value (allowed_s, "framerate")))
gst_structure_set_value (s, "framerate", val);
if ((val = gst_structure_get_value (allowed_s, "pixel-aspect-ratio")))
gst_structure_set_value (s, "pixel-aspect-ratio", val);
if ((val = gst_structure_get_value (allowed_s, "profile"))) {
gboolean has_420 = FALSE;
gboolean has_422 = FALSE;
gboolean has_444 = FALSE;
if (G_VALUE_HOLDS_STRING (val)) {
check_formats (g_value_get_string (val), &has_420, &has_422,
&has_444);
} else if (GST_VALUE_HOLDS_LIST (val)) {
for (k = 0; k < gst_value_list_get_size (val); k++) {
const GValue *vlist = gst_value_list_get_value (val, k);
if (G_VALUE_HOLDS_STRING (vlist))
check_formats (g_value_get_string (vlist), &has_420, &has_422,
&has_444);
}
}
gst_x264_enc_add_x264_chroma_format (s, has_420, has_422, has_444);
}
filter_caps = gst_caps_merge_structure (filter_caps, s);
}
}
fcaps = gst_caps_intersect (filter_caps, supported_incaps);
gst_caps_unref (filter_caps);
gst_caps_unref (supported_incaps);
if (filter) {
GST_LOG_OBJECT (enc, "intersecting with %" GST_PTR_FORMAT, filter);
filter_caps = gst_caps_intersect (fcaps, filter);
gst_caps_unref (fcaps);
fcaps = filter_caps;
}
done:
gst_caps_replace (&allowed, NULL);
GST_LOG_OBJECT (enc, "proxy caps %" GST_PTR_FORMAT, fcaps);
return fcaps;
}
static gboolean
gst_x264_enc_sink_query (GstVideoEncoder * enc, GstQuery * query)
{
GstPad *pad = GST_VIDEO_ENCODER_SINK_PAD (enc);
gboolean ret = FALSE;
GST_DEBUG ("Received %s query on sinkpad, %" GST_PTR_FORMAT,
GST_QUERY_TYPE_NAME (query), query);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_ACCEPT_CAPS:{
GstCaps *acceptable, *caps;
acceptable = gst_pad_get_pad_template_caps (pad);
gst_query_parse_accept_caps (query, &caps);
gst_query_set_accept_caps_result (query,
gst_caps_is_subset (caps, acceptable));
gst_caps_unref (acceptable);
ret = TRUE;
}
break;
default:
ret = GST_VIDEO_ENCODER_CLASS (parent_class)->sink_query (enc, query);
break;
}
return ret;
}
static void
gst_x264_enc_class_init (GstX264EncClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *element_class;
GstVideoEncoderClass *gstencoder_class;
const gchar *partitions = NULL;
GstPadTemplate *sink_templ;
GstCaps *supported_sinkcaps;
x264enc_defaults = g_string_new ("");
gobject_class = G_OBJECT_CLASS (klass);
element_class = GST_ELEMENT_CLASS (klass);
gstencoder_class = GST_VIDEO_ENCODER_CLASS (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;
gstencoder_class->set_format = GST_DEBUG_FUNCPTR (gst_x264_enc_set_format);
gstencoder_class->handle_frame =
GST_DEBUG_FUNCPTR (gst_x264_enc_handle_frame);
gstencoder_class->start = GST_DEBUG_FUNCPTR (gst_x264_enc_start);
gstencoder_class->stop = GST_DEBUG_FUNCPTR (gst_x264_enc_stop);
gstencoder_class->flush = GST_DEBUG_FUNCPTR (gst_x264_enc_flush);
gstencoder_class->finish = GST_DEBUG_FUNCPTR (gst_x264_enc_finish);
gstencoder_class->getcaps = GST_DEBUG_FUNCPTR (gst_x264_enc_sink_getcaps);
gstencoder_class->propose_allocation =
GST_DEBUG_FUNCPTR (gst_x264_enc_propose_allocation);
gstencoder_class->sink_query = GST_DEBUG_FUNCPTR (gst_x264_enc_sink_query);
/* 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",
0, 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,
2000 * 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));
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_OPTION_STRING,
g_param_spec_string ("option-string", "Option string",
"String of x264 options (overridden by element properties)"
" in the format \"key1=value1:key2=value2\".",
ARG_OPTION_STRING_DEFAULT,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, ARG_FRAME_PACKING,
g_param_spec_enum ("frame-packing", "Frame Packing",
"Set frame packing mode for Stereoscopic content",
GST_X264_ENC_FRAME_PACKING_TYPE, ARG_FRAME_PACKING_DEFAULT,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, ARG_INSERT_VUI,
g_param_spec_boolean ("insert-vui", "Insert VUI",
"Insert VUI NAL in stream",
ARG_INSERT_VUI_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, G_MAXINT, 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);
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);
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);
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);
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, 16, 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));
g_string_append_printf (x264enc_defaults, ":b-pyramid=%s",
x264_b_pyramid_names[ARG_B_PYRAMID_DEFAULT]);
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", 0, 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", 0, 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",
0, 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);
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);
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");
gst_element_class_set_static_metadata (element_class,
"x264enc", "Codec/Encoder/Video", "H264 Encoder",
"Josef Zlomek <josef.zlomek@itonis.tv>, "
"Mark Nauwelaerts <mnauw@users.sf.net>");
supported_sinkcaps = gst_caps_new_simple ("video/x-raw",
"framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1,
"width", GST_TYPE_INT_RANGE, 16, G_MAXINT,
"height", GST_TYPE_INT_RANGE, 16, G_MAXINT, NULL);
gst_x264_enc_add_x264_chroma_format (gst_caps_get_structure
(supported_sinkcaps, 0), TRUE, TRUE, TRUE);
sink_templ = gst_pad_template_new ("sink",
GST_PAD_SINK, GST_PAD_ALWAYS, supported_sinkcaps);
gst_caps_unref (supported_sinkcaps);
gst_element_class_add_pad_template (element_class, sink_templ);
gst_element_class_add_static_pad_template (element_class, &src_factory);
}
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)
{
/* 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->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;
encoder->frame_packing = ARG_FRAME_PACKING_DEFAULT;
encoder->insert_vui = ARG_INSERT_VUI_DEFAULT;
}
typedef struct
{
GstVideoCodecFrame *frame;
GstVideoFrame vframe;
} FrameData;
static FrameData *
gst_x264_enc_queue_frame (GstX264Enc * enc, GstVideoCodecFrame * frame,
GstVideoInfo * info)
{
GstVideoFrame vframe;
FrameData *fdata;
if (!gst_video_frame_map (&vframe, info, frame->input_buffer, GST_MAP_READ))
return NULL;
fdata = g_slice_new (FrameData);
fdata->frame = gst_video_codec_frame_ref (frame);
fdata->vframe = vframe;
enc->pending_frames = g_list_prepend (enc->pending_frames, fdata);
return fdata;
}
static void
gst_x264_enc_dequeue_frame (GstX264Enc * enc, GstVideoCodecFrame * frame)
{
GList *l;
for (l = enc->pending_frames; l; l = l->next) {
FrameData *fdata = l->data;
if (fdata->frame != frame)
continue;
gst_video_frame_unmap (&fdata->vframe);
gst_video_codec_frame_unref (fdata->frame);
g_slice_free (FrameData, fdata);
enc->pending_frames = g_list_delete_link (enc->pending_frames, l);
return;
}
}
static void
gst_x264_enc_dequeue_all_frames (GstX264Enc * enc)
{
GList *l;
for (l = enc->pending_frames; l; l = l->next) {
FrameData *fdata = l->data;
gst_video_frame_unmap (&fdata->vframe);
gst_video_codec_frame_unref (fdata->frame);
g_slice_free (FrameData, fdata);
}
g_list_free (enc->pending_frames);
enc->pending_frames = NULL;
}
static gboolean
gst_x264_enc_start (GstVideoEncoder * encoder)
{
GstX264Enc *x264enc = GST_X264_ENC (encoder);
x264enc->current_byte_stream = GST_X264_ENC_STREAM_FORMAT_FROM_PROPERTY;
/* make sure that we have enough time for first DTS,
this is probably overkill for most streams */
gst_video_encoder_set_min_pts (encoder, GST_SECOND * 60 * 60 * 1000);
return TRUE;
}
static gboolean
gst_x264_enc_stop (GstVideoEncoder * encoder)
{
GstX264Enc *x264enc = GST_X264_ENC (encoder);
gst_x264_enc_flush_frames (x264enc, FALSE);
gst_x264_enc_close_encoder (x264enc);
gst_x264_enc_dequeue_all_frames (x264enc);
if (x264enc->input_state)
gst_video_codec_state_unref (x264enc->input_state);
x264enc->input_state = NULL;
return TRUE;
}
static gboolean
gst_x264_enc_flush (GstVideoEncoder * encoder)
{
GstX264Enc *x264enc = GST_X264_ENC (encoder);
gst_x264_enc_flush_frames (x264enc, FALSE);
gst_x264_enc_close_encoder (x264enc);
gst_x264_enc_dequeue_all_frames (x264enc);
gst_x264_enc_init_encoder (x264enc);
return TRUE;
}
static void
gst_x264_enc_finalize (GObject * object)
{
GstX264Enc *encoder = GST_X264_ENC (object);
if (encoder->input_state)
gst_video_codec_state_unref (encoder->input_state);
encoder->input_state = NULL;
#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;
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 =
encoder->vtable->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;
}
static gint
gst_x264_enc_gst_to_x264_video_format (GstVideoFormat format, gint * nplanes)
{
switch (format) {
case GST_VIDEO_FORMAT_I420:
case GST_VIDEO_FORMAT_YV12:
if (nplanes)
*nplanes = 3;
return X264_CSP_I420;
case GST_VIDEO_FORMAT_I420_10BE:
case GST_VIDEO_FORMAT_I420_10LE:
if (nplanes)
*nplanes = 3;
return X264_CSP_I420 | X264_CSP_HIGH_DEPTH;
case GST_VIDEO_FORMAT_Y42B:
if (nplanes)
*nplanes = 3;
return X264_CSP_I422;
case GST_VIDEO_FORMAT_I422_10BE:
case GST_VIDEO_FORMAT_I422_10LE:
if (nplanes)
*nplanes = 3;
return X264_CSP_I422 | X264_CSP_HIGH_DEPTH;
case GST_VIDEO_FORMAT_Y444:
if (nplanes)
*nplanes = 3;
return X264_CSP_I444;
case GST_VIDEO_FORMAT_Y444_10BE:
case GST_VIDEO_FORMAT_Y444_10LE:
if (nplanes)
*nplanes = 3;
return X264_CSP_I444 | X264_CSP_HIGH_DEPTH;
case GST_VIDEO_FORMAT_NV12:
if (nplanes)
*nplanes = 2;
return X264_CSP_NV12;
default:
g_return_val_if_reached (GST_VIDEO_FORMAT_UNKNOWN);
}
}
/*
* 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;
GstVideoInfo *info;
if (!encoder->input_state) {
GST_DEBUG_OBJECT (encoder, "Have no input state yet");
return FALSE;
}
info = &encoder->input_state->info;
/* make sure that the encoder is closed */
gst_x264_enc_close_encoder (encoder);
GST_OBJECT_LOCK (encoder);
if (GST_VIDEO_INFO_COMP_DEPTH (info, 0) == 8)
encoder->vtable = vtable_8bit;
else if (GST_VIDEO_INFO_COMP_DEPTH (info, 0) == 10)
encoder->vtable = vtable_10bit;
g_assert (encoder->vtable != NULL);
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 : "");
encoder->vtable->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) {
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;
}
} 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;
}
/* setup appropriate timebase for gstreamer */
encoder->x264param.i_timebase_num = 1;
encoder->x264param.i_timebase_den = 1000000000;
/* 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 */
#if X264_BUILD >= 153
encoder->x264param.i_bitdepth = GST_VIDEO_INFO_COMP_DEPTH (info, 0);
#endif
encoder->x264param.i_csp =
gst_x264_enc_gst_to_x264_video_format (info->finfo->format,
&encoder->x264_nplanes);
if (info->fps_d == 0 || info->fps_n == 0) {
/* No FPS so must use VFR
* This raises latency apparently see http://mewiki.project357.com/wiki/X264_Encoding_Suggestions */
encoder->x264param.b_vfr_input = TRUE;
if (encoder->keyint_max) { /* NB the default is 250 setup by x264 itself */
encoder->x264param.i_keyint_max = encoder->keyint_max;
}
} else {
/* FPS available so set it up */
encoder->x264param.b_vfr_input = FALSE;
encoder->x264param.i_fps_num = info->fps_n;
encoder->x264param.i_fps_den = info->fps_d;
encoder->x264param.i_keyint_max =
encoder->keyint_max ? encoder->keyint_max : (10 * info->fps_n /
info->fps_d);
}
encoder->x264param.i_width = info->width;
encoder->x264param.i_height = info->height;
if (info->par_d > 0) {
encoder->x264param.vui.i_sar_width = info->par_n;
encoder->x264param.vui.i_sar_height = info->par_d;
}
if ((((info->height == 576) && ((info->width == 720)
|| (info->width == 704) || (info->width == 352)))
|| ((info->height == 288) && (info->width == 352)))
&& (info->fps_d == 1) && (info->fps_n == 25)) {
encoder->x264param.vui.i_vidformat = 1; /* PAL */
} else if ((((info->height == 480) && ((info->width == 720)
|| (info->width == 704) || (info->width == 352)))
|| ((info->height == 240) && (info->width == 352)))
&& (info->fps_d == 1001) && ((info->fps_n == 30000)
|| (info->fps_n == 24000))) {
encoder->x264param.vui.i_vidformat = 2; /* NTSC */
} else {
encoder->x264param.vui.i_vidformat = 5; /* unspecified */
}
if (!encoder->insert_vui)
goto skip_vui_parameters;
switch (info->colorimetry.primaries) {
case GST_VIDEO_COLOR_PRIMARIES_BT709:
encoder->x264param.vui.i_colorprim = 1;
break;
case GST_VIDEO_COLOR_PRIMARIES_BT470M:
encoder->x264param.vui.i_colorprim = 4;
break;
case GST_VIDEO_COLOR_PRIMARIES_BT470BG:
encoder->x264param.vui.i_colorprim = 5;
break;
case GST_VIDEO_COLOR_PRIMARIES_SMPTE170M:
encoder->x264param.vui.i_colorprim = 6;
break;
case GST_VIDEO_COLOR_PRIMARIES_SMPTE240M:
encoder->x264param.vui.i_colorprim = 7;
break;
case GST_VIDEO_COLOR_PRIMARIES_FILM:
encoder->x264param.vui.i_colorprim = 8;
break;
case GST_VIDEO_COLOR_PRIMARIES_BT2020:
encoder->x264param.vui.i_colorprim = 9;
break;
default:
encoder->x264param.vui.i_colorprim = 2;
break;
}
switch (info->colorimetry.transfer) {
case GST_VIDEO_TRANSFER_BT709:
encoder->x264param.vui.i_transfer = 1;
break;
case GST_VIDEO_TRANSFER_GAMMA22:
encoder->x264param.vui.i_transfer = 4;
break;
case GST_VIDEO_TRANSFER_GAMMA28:
encoder->x264param.vui.i_transfer = 5;
break;
case GST_VIDEO_TRANSFER_SMPTE240M:
encoder->x264param.vui.i_transfer = 7;
break;
case GST_VIDEO_TRANSFER_GAMMA10:
encoder->x264param.vui.i_transfer = 8;
break;
case GST_VIDEO_TRANSFER_LOG100:
encoder->x264param.vui.i_transfer = 9;
break;
case GST_VIDEO_TRANSFER_LOG316:
encoder->x264param.vui.i_transfer = 10;
break;
default:
encoder->x264param.vui.i_transfer = 2;
break;
}
switch (info->colorimetry.matrix) {
case GST_VIDEO_COLOR_MATRIX_RGB:
encoder->x264param.vui.i_colmatrix = 0;
break;
case GST_VIDEO_COLOR_MATRIX_FCC:
encoder->x264param.vui.i_colmatrix = 4;
break;
case GST_VIDEO_COLOR_MATRIX_BT709:
encoder->x264param.vui.i_colmatrix = 1;
break;
case GST_VIDEO_COLOR_MATRIX_BT601:
encoder->x264param.vui.i_colmatrix = 5;
break;
case GST_VIDEO_COLOR_MATRIX_SMPTE240M:
encoder->x264param.vui.i_colmatrix = 7;
break;
case GST_VIDEO_COLOR_MATRIX_BT2020:
encoder->x264param.vui.i_colmatrix = 9;
break;
default:
encoder->x264param.vui.i_colmatrix = 2;
break;
}
if (info->colorimetry.range == GST_VIDEO_COLOR_RANGE_0_255) {
encoder->x264param.vui.b_fullrange = 1;
} else {
encoder->x264param.vui.b_fullrange = 0;
}
switch (info->chroma_site) {
case GST_VIDEO_CHROMA_SITE_MPEG2:
encoder->x264param.vui.i_chroma_loc = 0;
break;
case GST_VIDEO_CHROMA_SITE_JPEG:
encoder->x264param.vui.i_chroma_loc = 1;
break;
case GST_VIDEO_CHROMA_SITE_V_COSITED:
encoder->x264param.vui.i_chroma_loc = 3;
break;
case GST_VIDEO_CHROMA_SITE_DV:
encoder->x264param.vui.i_chroma_loc = 2;
break;
default:
encoder->x264param.vui.i_chroma_loc = 0;
break;
}
skip_vui_parameters:
encoder->x264param.analyse.b_psnr = 0;
/* FIXME 2.0 make configuration more sane and consistent with x264 cmdline:
* + split pass property into a pass property (pass1/2/3 enum) and rc-method
* + bitrate property should only be used in case of CBR method
* + vbv bitrate/buffer should have separate configuration that is then
* applied independently of the mode:
* + either using properties (new) vbv-maxrate and (renamed) vbv-bufsize
* + or dropping vbv-buf-capacity altogether and simply using option-string
*/
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;
encoder->vtable->x264_param_apply_fastfirstpass (&encoder->x264param);
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;
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 (encoder->peer_profile) {
if (encoder->vtable->x264_param_apply_profile (&encoder->x264param,
encoder->peer_profile))
GST_WARNING_OBJECT (encoder, "Bad downstream profile name: %s",
encoder->peer_profile);
}
/* 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_idc != -1) {
gint i;
const x264_level_t *peer_level = NULL;
for (i = 0; (*encoder->vtable->x264_levels)[i].level_idc; i++) {
if (encoder->peer_level_idc ==
(*encoder->vtable->x264_levels)[i].level_idc) {
int mb_width = (info->width + 15) / 16;
int mb_height = (info->height + 15) / 16;
int mbs = mb_width * mb_height;
if ((*encoder->vtable->x264_levels)[i].frame_size < mbs ||
(*encoder->vtable->x264_levels)[i].frame_size * 8 <
mb_width * mb_width
|| (*encoder->vtable->x264_levels)[i].frame_size * 8 <
mb_height * mb_height) {
GST_WARNING_OBJECT (encoder,
"Frame size larger than level %d allows",
encoder->peer_level_idc);
break;
}
if (info->fps_d && (*encoder->vtable->x264_levels)[i].mbps
< (gint64) mbs * info->fps_n / info->fps_d) {
GST_WARNING_OBJECT (encoder,
"Macroblock rate higher than level %d allows",
encoder->peer_level_idc);
break;
}
peer_level = &(*encoder->vtable->x264_levels)[i];
break;
}
}
if (!peer_level)
goto unlock_and_return;
encoder->x264param.i_level_idc = peer_level->level_idc;
encoder->x264param.rc.i_bitrate = MIN (encoder->x264param.rc.i_bitrate,
peer_level->bitrate);
encoder->x264param.rc.i_vbv_max_bitrate =
MIN (encoder->x264param.rc.i_vbv_max_bitrate, peer_level->bitrate);
encoder->x264param.rc.i_vbv_buffer_size =
MIN (encoder->x264param.rc.i_vbv_buffer_size, peer_level->cpb);
encoder->x264param.analyse.i_mv_range =
MIN (encoder->x264param.analyse.i_mv_range, peer_level->mv_range);
if (peer_level->frame_only) {
encoder->x264param.b_interlaced = FALSE;
encoder->x264param.b_fake_interlaced = FALSE;
}
}
if (GST_VIDEO_INFO_IS_INTERLACED (info)) {
encoder->x264param.b_interlaced = TRUE;
if (GST_VIDEO_INFO_INTERLACE_MODE (info) == GST_VIDEO_INTERLACE_MODE_MIXED) {
encoder->x264param.b_pic_struct = TRUE;
}
if (GST_VIDEO_INFO_FIELD_ORDER (info) ==
GST_VIDEO_FIELD_ORDER_TOP_FIELD_FIRST) {
encoder->x264param.b_tff = TRUE;
} else {
encoder->x264param.b_tff = FALSE;
}
} else {
encoder->x264param.b_interlaced = FALSE;
}
/* Set 3D frame packing */
if (encoder->frame_packing != GST_VIDEO_MULTIVIEW_MODE_NONE)
encoder->x264param.i_frame_packing = encoder->frame_packing;
else
encoder->x264param.i_frame_packing =
gst_x264_enc_mview_mode_to_frame_packing (GST_VIDEO_INFO_MULTIVIEW_MODE
(info));
GST_DEBUG_OBJECT (encoder, "Stereo frame packing = %d",
encoder->x264param.i_frame_packing);
encoder->reconfig = FALSE;
GST_OBJECT_UNLOCK (encoder);
encoder->x264enc = encoder->vtable->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) {
encoder->vtable->x264_encoder_close (encoder->x264enc);
encoder->x264enc = NULL;
}
encoder->vtable = 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;
GstStructure *s;
const gchar *profile;
GstCaps *allowed_caps;
GstStructure *s2;
const gchar *allowed_profile;
header_return =
encoder->vtable->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;
sps = nal[sps_ni].p_payload + 4;
/* skip NAL unit type */
sps++;
gst_codec_utils_h264_caps_set_level_and_profile (caps, sps, 3);
/* Constrained baseline is a strict subset of baseline. If downstream
* wanted baseline and we produced constrained baseline, we can just
* set the profile to baseline in the caps to make negotiation happy.
* Same goes for baseline as subset of main profile and main as a subset
* of high profile.
*/
s = gst_caps_get_structure (caps, 0);
profile = gst_structure_get_string (s, "profile");
allowed_caps = gst_pad_get_allowed_caps (GST_VIDEO_ENCODER_SRC_PAD (encoder));
if (allowed_caps == NULL)
goto no_peer;
if (!gst_caps_can_intersect (allowed_caps, caps)) {
allowed_caps = gst_caps_make_writable (allowed_caps);
allowed_caps = gst_caps_truncate (allowed_caps);
s2 = gst_caps_get_structure (allowed_caps, 0);
gst_structure_fixate_field_string (s2, "profile", profile);
allowed_profile = gst_structure_get_string (s2, "profile");
if (!strcmp (allowed_profile, "high")) {
if (!strcmp (profile, "constrained-baseline")
|| !strcmp (profile, "baseline") || !strcmp (profile, "main")) {
gst_structure_set (s, "profile", G_TYPE_STRING, "high", NULL);
GST_INFO_OBJECT (encoder, "downstream requested high profile, but "
"encoder will now output %s profile (which is a subset), due "
"to how it's been configured", profile);
}
} else if (!strcmp (allowed_profile, "main")) {
if (!strcmp (profile, "constrained-baseline")
|| !strcmp (profile, "baseline")) {
gst_structure_set (s, "profile", G_TYPE_STRING, "main", NULL);
GST_INFO_OBJECT (encoder, "downstream requested main profile, but "
"encoder will now output %s profile (which is a subset), due "
"to how it's been configured", profile);
}
} else if (!strcmp (allowed_profile, "baseline")) {
if (!strcmp (profile, "constrained-baseline"))
gst_structure_set (s, "profile", G_TYPE_STRING, "baseline", NULL);
}
}
gst_caps_unref (allowed_caps);
no_peer:
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;
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 =
encoder->vtable->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);
sps = nal[sps_ni].p_payload + 4;
/* skip NAL unit type */
sps++;
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 */
nal_size = nal[sps_ni].i_payload - 4;
memcpy (buffer + i_size + 2, nal[sps_ni].p_payload + 4, nal_size);
GST_WRITE_UINT16_BE (buffer + i_size, nal_size);
i_size += nal_size + 2;
buffer[i_size++] = 1; /* number of PPSs */
nal_size = nal[pps_ni].i_payload - 4;
memcpy (buffer + i_size + 2, nal[pps_ni].p_payload + 4, nal_size);
GST_WRITE_UINT16_BE (buffer + i_size, nal_size);
i_size += nal_size + 2;
buf = gst_buffer_new_and_alloc (i_size);
gst_buffer_fill (buf, 0, buffer, i_size);
GST_MEMDUMP ("header", buffer, i_size);
g_free (buffer);
return buf;
}
/* gst_x264_enc_set_src_caps
* Returns: TRUE on success.
*/
static gboolean
gst_x264_enc_set_src_caps (GstX264Enc * encoder, GstCaps * caps)
{
GstCaps *outcaps;
GstStructure *structure;
GstVideoCodecState *state;
GstTagList *tags;
outcaps = gst_caps_new_empty_simple ("video/x-h264");
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) {
GstBuffer *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;
}
state = gst_video_encoder_set_output_state (GST_VIDEO_ENCODER (encoder),
outcaps, encoder->input_state);
GST_DEBUG_OBJECT (encoder, "output caps: %" GST_PTR_FORMAT, state->caps);
/* If set, local frame packing setting overrides any upstream config */
switch (encoder->frame_packing) {
case 0:
GST_VIDEO_INFO_MULTIVIEW_MODE (&state->info) =
GST_VIDEO_MULTIVIEW_MODE_CHECKERBOARD;
break;
case 1:
GST_VIDEO_INFO_MULTIVIEW_MODE (&state->info) =
GST_VIDEO_MULTIVIEW_MODE_COLUMN_INTERLEAVED;
break;
case 2:
GST_VIDEO_INFO_MULTIVIEW_MODE (&state->info) =
GST_VIDEO_MULTIVIEW_MODE_ROW_INTERLEAVED;
break;
case 3:
GST_VIDEO_INFO_MULTIVIEW_MODE (&state->info) =
GST_VIDEO_MULTIVIEW_MODE_SIDE_BY_SIDE;
break;
case 4:
GST_VIDEO_INFO_MULTIVIEW_MODE (&state->info) =
GST_VIDEO_MULTIVIEW_MODE_TOP_BOTTOM;
break;
case 5:
GST_VIDEO_INFO_MULTIVIEW_MODE (&state->info) =
GST_VIDEO_MULTIVIEW_MODE_FRAME_BY_FRAME;
break;
default:
break;
}
gst_video_codec_state_unref (state);
tags = gst_tag_list_new_empty ();
gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE, GST_TAG_ENCODER, "x264",
GST_TAG_ENCODER_VERSION, X264_BUILD,
GST_TAG_MAXIMUM_BITRATE, encoder->bitrate * 1024,
GST_TAG_NOMINAL_BITRATE, encoder->bitrate * 1024, NULL);
gst_video_encoder_merge_tags (GST_VIDEO_ENCODER (encoder), tags,
GST_TAG_MERGE_REPLACE);
gst_tag_list_unref (tags);
return TRUE;
}
static void
gst_x264_enc_set_latency (GstX264Enc * encoder)
{
GstVideoInfo *info = &encoder->input_state->info;
gint max_delayed_frames;
GstClockTime latency;
max_delayed_frames =
encoder->vtable->x264_encoder_maximum_delayed_frames (encoder->x264enc);
if (info->fps_n) {
latency = gst_util_uint64_scale_ceil (GST_SECOND * info->fps_d,
max_delayed_frames, info->fps_n);
} else {
/* FIXME: Assume 25fps. This is better than reporting no latency at
* all and then later failing in live pipelines
*/
latency = gst_util_uint64_scale_ceil (GST_SECOND * 1,
max_delayed_frames, 25);
}
GST_INFO_OBJECT (encoder,
"Updating latency to %" GST_TIME_FORMAT " (%d frames)",
GST_TIME_ARGS (latency), max_delayed_frames);
gst_video_encoder_set_latency (GST_VIDEO_ENCODER (encoder), latency, latency);
}
static gboolean
gst_x264_enc_set_format (GstVideoEncoder * video_enc,
GstVideoCodecState * state)
{
GstX264Enc *encoder = GST_X264_ENC (video_enc);
GstVideoInfo *info = &state->info;
GstCaps *template_caps;
GstCaps *allowed_caps = NULL;
/* If the encoder is initialized, do not reinitialize it again if not
* necessary */
if (encoder->x264enc) {
GstVideoInfo *old = &encoder->input_state->info;
if (info->finfo->format == old->finfo->format
&& info->width == old->width && info->height == old->height
&& info->fps_n == old->fps_n && info->fps_d == old->fps_d
&& info->par_n == old->par_n && info->par_d == old->par_d) {
gst_video_codec_state_unref (encoder->input_state);
encoder->input_state = gst_video_codec_state_ref (state);
return TRUE;
}
/* clear out pending frames */
gst_x264_enc_flush_frames (encoder, TRUE);
encoder->sps_id++;
}
if (encoder->input_state)
gst_video_codec_state_unref (encoder->input_state);
encoder->input_state = gst_video_codec_state_ref (state);
encoder->peer_profile = NULL;
encoder->peer_intra_profile = FALSE;
encoder->peer_level_idc = -1;
template_caps = gst_static_pad_template_get_caps (&src_factory);
allowed_caps = gst_pad_get_allowed_caps (GST_VIDEO_ENCODER_SRC_PAD (encoder));
/* Output byte-stream if downstream has ANY caps, it's what people expect,
* and it makes more sense too */
if (allowed_caps == template_caps) {
GST_INFO_OBJECT (encoder,
"downstream has ANY caps, outputting byte-stream");
encoder->current_byte_stream = GST_X264_ENC_STREAM_FORMAT_BYTE_STREAM;
g_string_append_printf (encoder->option_string, ":annexb=1");
gst_caps_unref (allowed_caps);
} else 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);
gst_caps_unref (template_caps);
return FALSE;
}
allowed_caps = gst_caps_make_writable (allowed_caps);
allowed_caps = gst_caps_fixate (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 (g_str_has_suffix (profile, "-intra")) {
encoder->peer_intra_profile = TRUE;
}
if (!strcmp (profile, "constrained-baseline") ||
!strcmp (profile, "baseline")) {
encoder->peer_profile = "baseline";
} else if (g_str_has_prefix (profile, "high-10")) {
encoder->peer_profile = "high10";
} else if (g_str_has_prefix (profile, "high-4:2:2")) {
encoder->peer_profile = "high422";
} else if (g_str_has_prefix (profile, "high-4:4:4")) {
encoder->peer_profile = "high444";
} else if (g_str_has_prefix (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) {
encoder->peer_level_idc = gst_codec_utils_h264_get_level_idc (level);
}
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);
}
gst_caps_unref (template_caps);
if (!gst_x264_enc_init_encoder (encoder))
return FALSE;
if (!gst_x264_enc_set_src_caps (encoder, state->caps)) {
gst_x264_enc_close_encoder (encoder);
return FALSE;
}
gst_x264_enc_set_latency (encoder);
return TRUE;
}
static GstFlowReturn
gst_x264_enc_finish (GstVideoEncoder * encoder)
{
gst_x264_enc_flush_frames (GST_X264_ENC (encoder), TRUE);
return GST_FLOW_OK;
}
static gboolean
gst_x264_enc_propose_allocation (GstVideoEncoder * encoder, GstQuery * query)
{
GstX264Enc *self = GST_X264_ENC (encoder);
GstVideoInfo *info;
guint num_buffers;
gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL);
if (!self->input_state)
return FALSE;
if (self->vtable == NULL)
return FALSE;
info = &self->input_state->info;
num_buffers =
self->vtable->x264_encoder_maximum_delayed_frames (self->x264enc) + 1;
gst_query_add_allocation_pool (query, NULL, info->size, num_buffers, 0);
return GST_VIDEO_ENCODER_CLASS (parent_class)->propose_allocation (encoder,
query);
}
/* chain function
* this function does the actual processing
*/
static GstFlowReturn
gst_x264_enc_handle_frame (GstVideoEncoder * video_enc,
GstVideoCodecFrame * frame)
{
GstX264Enc *encoder = GST_X264_ENC (video_enc);
GstVideoInfo *info = &encoder->input_state->info;
GstFlowReturn ret;
x264_picture_t pic_in;
gint i_nal, i;
FrameData *fdata;
gint nplanes = encoder->x264_nplanes;
if (G_UNLIKELY (encoder->x264enc == NULL))
goto not_inited;
/* create x264_picture_t from the buffer */
/* mostly taken from mplayer (file ve_x264.c) */
/* set up input picture */
memset (&pic_in, 0, sizeof (pic_in));
fdata = gst_x264_enc_queue_frame (encoder, frame, info);
if (!fdata)
goto invalid_frame;
pic_in.img.i_csp = encoder->x264param.i_csp;
pic_in.img.i_plane = nplanes;
for (i = 0; i < nplanes; i++) {
pic_in.img.plane[i] = GST_VIDEO_FRAME_COMP_DATA (&fdata->vframe, i);
pic_in.img.i_stride[i] = GST_VIDEO_FRAME_COMP_STRIDE (&fdata->vframe, i);
}
pic_in.i_type = X264_TYPE_AUTO;
pic_in.i_pts = frame->pts;
pic_in.opaque = GINT_TO_POINTER (frame->system_frame_number);
if (GST_VIDEO_INFO_INTERLACE_MODE (info) == GST_VIDEO_INTERLACE_MODE_MIXED) {
if ((fdata->vframe.flags & GST_VIDEO_FRAME_FLAG_INTERLACED) == 0) {
pic_in.i_pic_struct = PIC_STRUCT_PROGRESSIVE;
} else if ((fdata->vframe.flags & GST_VIDEO_FRAME_FLAG_RFF) != 0) {
if ((fdata->vframe.flags & GST_VIDEO_FRAME_FLAG_TFF) != 0) {
pic_in.i_pic_struct = PIC_STRUCT_TOP_BOTTOM_TOP;
} else {
pic_in.i_pic_struct = PIC_STRUCT_BOTTOM_TOP_BOTTOM;
}
} else {
if ((fdata->vframe.flags & GST_VIDEO_FRAME_FLAG_TFF) != 0) {
pic_in.i_pic_struct = PIC_STRUCT_TOP_BOTTOM;
} else {
pic_in.i_pic_struct = PIC_STRUCT_BOTTOM_TOP;
}
}
}
ret = gst_x264_enc_encode_frame (encoder, &pic_in, frame, &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");
return GST_FLOW_NOT_NEGOTIATED;
}
invalid_frame:
{
GST_ERROR_OBJECT (encoder, "Failed to map frame");
return GST_FLOW_ERROR;
}
}
static GstFlowReturn
gst_x264_enc_encode_frame (GstX264Enc * encoder, x264_picture_t * pic_in,
GstVideoCodecFrame * input_frame, int *i_nal, gboolean send)
{
GstVideoCodecFrame *frame = NULL;
GstBuffer *out_buf = NULL;
x264_picture_t pic_out;
x264_nal_t *nal;
int i_size;
int encoder_return;
GstFlowReturn ret = GST_FLOW_OK;
guint8 *data;
gboolean update_latency = FALSE;
if (G_UNLIKELY (encoder->x264enc == NULL)) {
if (input_frame)
gst_video_codec_frame_unref (input_frame);
return GST_FLOW_NOT_NEGOTIATED;
}
GST_OBJECT_LOCK (encoder);
if (encoder->reconfig) {
encoder->reconfig = FALSE;
if (encoder->vtable->x264_encoder_reconfig (encoder->x264enc,
&encoder->x264param) < 0)
GST_WARNING_OBJECT (encoder, "Could not reconfigure");
update_latency = TRUE;
}
if (pic_in && input_frame) {
if (GST_VIDEO_CODEC_FRAME_IS_FORCE_KEYFRAME (input_frame)) {
GST_INFO_OBJECT (encoder, "Forcing key frame");
if (encoder->intra_refresh)
encoder->vtable->x264_encoder_intra_refresh (encoder->x264enc);
else
pic_in->i_type = X264_TYPE_IDR;
}
}
GST_OBJECT_UNLOCK (encoder);
if (G_UNLIKELY (update_latency))
gst_x264_enc_set_latency (encoder);
encoder_return = encoder->vtable->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;
/* Make sure we finish this frame */
frame = input_frame;
goto out;
}
/* Input frame is now queued */
if (input_frame)
gst_video_codec_frame_unref (input_frame);
if (!*i_nal) {
ret = GST_FLOW_OK;
goto out;
}
i_size = encoder_return;
data = nal[0].p_payload;
frame = gst_video_encoder_get_frame (GST_VIDEO_ENCODER (encoder),
GPOINTER_TO_INT (pic_out.opaque));
g_assert (frame || !send);
if (!send || !frame) {
ret = GST_FLOW_OK;
goto out;
}
out_buf = gst_buffer_new_allocate (NULL, i_size, NULL);
gst_buffer_fill (out_buf, 0, data, i_size);
frame->output_buffer = out_buf;
GST_LOG_OBJECT (encoder,
"output: dts %" G_GINT64_FORMAT " pts %" G_GINT64_FORMAT,
(gint64) pic_out.i_dts, (gint64) pic_out.i_pts);
/* we want to know if x264 is messing around with this */
g_assert (frame->pts == pic_out.i_pts);
frame->dts = pic_out.i_dts;
frame->pts = pic_out.i_pts;
if (pic_out.b_keyframe) {
GST_DEBUG_OBJECT (encoder, "Output keyframe");
GST_VIDEO_CODEC_FRAME_SET_SYNC_POINT (frame);
}
out:
if (frame) {
gst_x264_enc_dequeue_frame (encoder, frame);
ret = gst_video_encoder_finish_frame (GST_VIDEO_ENCODER (encoder), frame);
}
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, NULL, &i_nal, send);
} while (flow_ret == GST_FLOW_OK
&& encoder->vtable->x264_encoder_delayed_frames (encoder->x264enc) > 0);
}
static void
gst_x264_enc_reconfig (GstX264Enc * encoder)
{
if (!encoder->vtable)
return;
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_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_MULTIPASS_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);
g_string_append_printf (encoder->option_string, ":b-pyramid=%s",
x264_b_pyramid_names[encoder->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);
break;
case ARG_FRAME_PACKING:
encoder->frame_packing = g_value_get_enum (value);
break;
case ARG_INSERT_VUI:
encoder->insert_vui = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
GST_OBJECT_UNLOCK (encoder);
return;
/* ERROR */
wrong_state:
{
GST_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_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_OPTION_STRING:
g_value_set_string (value, encoder->option_string_prop->str);
break;
case ARG_FRAME_PACKING:
g_value_set_enum (value, encoder->frame_packing);
break;
case ARG_INSERT_VUI:
g_value_set_boolean (value, encoder->insert_vui);
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");
GST_INFO ("linked against x264 build: %u", X264_BUILD);
/* Initialize the static GstX264EncVTable which is overriden in load_x264()
* if needed. We can't initialize statically because these values are not
* constant on Windows. */
default_vtable.module = NULL;
#if X264_BUILD < 153
default_vtable.x264_bit_depth = &x264_bit_depth;
#endif
default_vtable.x264_chroma_format = &x264_chroma_format;
default_vtable.x264_encoder_close = x264_encoder_close;
default_vtable.x264_encoder_delayed_frames = x264_encoder_delayed_frames;
default_vtable.x264_encoder_encode = x264_encoder_encode;
default_vtable.x264_encoder_headers = x264_encoder_headers;
default_vtable.x264_encoder_intra_refresh = x264_encoder_intra_refresh;
default_vtable.x264_encoder_maximum_delayed_frames =
x264_encoder_maximum_delayed_frames;
default_vtable.x264_encoder_open = x264_encoder_open;
default_vtable.x264_encoder_reconfig = x264_encoder_reconfig;
default_vtable.x264_levels = &x264_levels;
default_vtable.x264_param_apply_fastfirstpass =
x264_param_apply_fastfirstpass;
default_vtable.x264_param_apply_profile = x264_param_apply_profile;
default_vtable.x264_param_default_preset = x264_param_default_preset;
default_vtable.x264_param_parse = x264_param_parse;
if (!load_x264_libraries ())
return FALSE;
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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