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gstreamer/ext/x264/gstx264enc.c
Tim-Philipp Müller 7567247554 ext/x264/gstx264enc.c: Try harder not to crash when we get an EOS event but haven't set up the encoder yet (as may ha... 
Original commit message from CVS:
* ext/x264/gstx264enc.c: (gst_x264_enc_header_buf),
(gst_x264_enc_sink_event), (gst_x264_enc_chain),
(gst_x264_enc_encode_frame):
Try harder not to crash when we get an EOS event but haven't set
up the encoder yet (as may happen when upstream errors out with
not-negotiated, for example). Also, always push the EOS event
downstream.
2008-06-04 11:33:21 +00:00

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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>
*
* 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.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "gstx264enc.h"
#include <string.h>
#include <stdlib.h>
enum
{
ARG_0,
ARG_THREADS,
ARG_PASS,
ARG_STATS_FILE,
ARG_BYTE_STREAM,
ARG_BITRATE,
ARG_VBV_BUF_CAPACITY,
ARG_ME,
ARG_SUBME,
ARG_ANALYSE,
ARG_DCT8x8,
ARG_REF,
ARG_BFRAMES,
ARG_B_PYRAMID,
ARG_WEIGHTB,
ARG_SPS_ID,
ARG_TRELLIS,
ARG_KEYINT_MAX,
ARG_CABAC
};
#define ARG_THREADS_DEFAULT 1
#define ARG_PASS_DEFAULT 0
#define ARG_STATS_FILE_DEFAULT "x264.log"
#define ARG_BYTE_STREAM_DEFAULT FALSE
#define ARG_BITRATE_DEFAULT (2 * 1024)
#define ARG_VBV_BUF_CAPACITY_DEFAULT 600
#define ARG_ME_DEFAULT X264_ME_HEX
#define ARG_SUBME_DEFAULT 1
#define ARG_ANALYSE_DEFAULT 0
#define ARG_DCT8x8_DEFAULT FALSE
#define ARG_REF_DEFAULT 1
#define ARG_BFRAMES_DEFAULT 0
#define ARG_B_PYRAMID_DEFAULT FALSE
#define ARG_WEIGHTB_DEFAULT FALSE
#define ARG_SPS_ID_DEFAULT 0
#define ARG_TRELLIS_DEFAULT TRUE
#define ARG_KEYINT_MAX_DEFAULT 0
#define ARG_CABAC_DEFAULT TRUE
#define GST_X264_ENC_ME_TYPE (gst_x264_enc_me_get_type())
static GType
gst_x264_enc_me_get_type (void)
{
static GType me_type = 0;
static const GEnumValue me_types[] = {
{X264_ME_DIA, "diamond search, radius 1 (fast)", "dia"},
{X264_ME_HEX, "hexagonal search, radius 2", "hex"},
{X264_ME_UMH, "uneven multi-hexagon search", "umh"},
{X264_ME_ESA, "exhaustive search (slow)", "esa"},
{0, NULL, NULL}
};
if (!me_type) {
me_type = g_enum_register_static ("GstX264EncMe", me_types);
}
return me_type;
}
#define GST_X264_ENC_ANALYSE_TYPE (gst_x264_enc_analyse_get_type())
static GType
gst_x264_enc_analyse_get_type (void)
{
static GType analyse_type = 0;
static const GFlagsValue analyse_types[] = {
{X264_ANALYSE_I4x4, "i4x4", "i4x4"},
{X264_ANALYSE_I8x8, "i8x8", "i8x8"},
{X264_ANALYSE_PSUB16x16, "p8x8", "p8x8"},
{X264_ANALYSE_PSUB8x8, "p4x4", "p4x4"},
{X264_ANALYSE_BSUB16x16, "b8x8", "b8x8"},
{0, NULL, NULL},
};
if (!analyse_type) {
analyse_type = g_flags_register_static ("GstX264EncAnalyse", analyse_types);
}
return analyse_type;
}
static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-raw-yuv, "
"format = (fourcc) I420, "
"framerate = (fraction) [0, MAX], "
"width = (int) [ 16, MAX ], " "height = (int) [ 16, MAX ]")
);
static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-h264")
);
GST_BOILERPLATE (GstX264Enc, gst_x264_enc, GstElement, GST_TYPE_ELEMENT);
static void gst_x264_enc_dispose (GObject * object);
static gboolean gst_x264_enc_init_encoder (GstX264Enc * encoder);
static void gst_x264_enc_close_encoder (GstX264Enc * encoder);
static gboolean gst_x264_enc_sink_event (GstPad * pad, GstEvent * event);
static GstFlowReturn gst_x264_enc_chain (GstPad * pad, GstBuffer * buf);
static GstFlowReturn gst_x264_enc_encode_frame (GstX264Enc * encoder,
x264_picture_t * pic_in, int *i_nal);
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
gst_x264_enc_timestamp_queue_init (GstX264Enc * encoder)
{
encoder->timestamp_queue_size = (2 + encoder->bframes + encoder->threads) * 2;
encoder->timestamp_queue_head = 0;
encoder->timestamp_queue_tail = 0;
encoder->timestamp_queue =
g_new (GstClockTime, encoder->timestamp_queue_size);
encoder->timestamp_queue_dur =
g_new (GstClockTime, encoder->timestamp_queue_size);
}
static void
gst_x264_enc_timestamp_queue_free (GstX264Enc * encoder)
{
if (encoder->timestamp_queue) {
g_free (encoder->timestamp_queue);
encoder->timestamp_queue = NULL;
}
if (encoder->timestamp_queue_dur) {
g_free (encoder->timestamp_queue_dur);
encoder->timestamp_queue_dur = NULL;
}
encoder->timestamp_queue_size = 0;
encoder->timestamp_queue_head = 0;
encoder->timestamp_queue_tail = 0;
}
static void
gst_x264_enc_timestamp_queue_put (GstX264Enc * encoder, GstClockTime clock_time,
GstClockTime duration)
{
encoder->timestamp_queue[encoder->timestamp_queue_tail] = clock_time;
encoder->timestamp_queue_dur[encoder->timestamp_queue_tail] = duration;
encoder->timestamp_queue_tail++;
encoder->timestamp_queue_tail %= encoder->timestamp_queue_size;
if (encoder->timestamp_queue_tail == encoder->timestamp_queue_head) {
GST_ELEMENT_ERROR (encoder, STREAM, ENCODE,
("Timestamp queue overflow."), ("FIX CODE"));
}
}
static void
gst_x264_enc_timestamp_queue_get (GstX264Enc * encoder,
GstClockTime * clock_time, GstClockTime * duration)
{
if (encoder->timestamp_queue_head == encoder->timestamp_queue_tail) {
GST_ELEMENT_ERROR (encoder, STREAM, ENCODE,
("Timestamp queue empty or after overflow."), ("FIX CODE"));
*clock_time = GST_CLOCK_TIME_NONE;
*duration = GST_CLOCK_TIME_NONE;
return;
}
*clock_time = encoder->timestamp_queue[encoder->timestamp_queue_head];
*duration = encoder->timestamp_queue_dur[encoder->timestamp_queue_head];
encoder->timestamp_queue_head++;
encoder->timestamp_queue_head %= encoder->timestamp_queue_size;
}
/*
* Returns: Buffer with the stream headers.
*/
static GstBuffer *
gst_x264_enc_header_buf (GstX264Enc * encoder)
{
GstBuffer *buf;
x264_nal_t *nal;
int i_nal;
int header_return;
int i_size;
int nal_size, i_data;
guint8 *buffer, *sps;
gulong buffer_size;
if (G_UNLIKELY (encoder->x264enc == NULL))
return NULL;
/* Create avcC header. */
header_return = x264_encoder_headers (encoder->x264enc, &nal, &i_nal);
if (header_return < 0) {
GST_ELEMENT_ERROR (encoder, STREAM, ENCODE,
("Encode x264 header failed."),
("x264_encoder_headers return code=%d", header_return));
return NULL;
}
/* This should be enough for a header buffer. */
buffer_size = 100000;
buffer = g_malloc (buffer_size);
if (nal[1].i_type != 7 || nal[2].i_type != 8) {
GST_ELEMENT_ERROR (encoder, STREAM, ENCODE,
("Unexpected x264 header."),
("TODO avcC header construction for high profiles needs some work"));
return NULL;
}
sps = nal[1].p_payload;
buffer[0] = 1; /* AVC Decoder Configuration Record ver. 1 */
buffer[1] = sps[0]; /* profile_idc */
buffer[2] = sps[1]; /* profile_compability */
buffer[3] = sps[2]; /* level_idc */
buffer[4] = 0xfc | (4 - 1); /* nal_length_size_minus1 */
i_size = 5;
buffer[i_size++] = 0xe0 | 1; /* number of SPSs */
i_data = buffer_size - i_size - 2;
nal_size = x264_nal_encode (buffer + i_size + 2, &i_data, 0, &nal[1]);
buffer[i_size + 0] = (nal_size >> 8) & 0xff;
buffer[i_size + 1] = nal_size & 0xff;
i_size += nal_size + 2;
buffer[i_size++] = 1; /* number of PPSs */
i_data = buffer_size - i_size - 2;
nal_size = x264_nal_encode (buffer + i_size + 2, &i_data, 0, &nal[2]);
buffer[i_size + 0] = (nal_size >> 8) & 0xff;
buffer[i_size + 1] = nal_size & 0xff;
i_size += nal_size + 2;
buf = gst_buffer_new_and_alloc (i_size);
memcpy (GST_BUFFER_DATA (buf), buffer, i_size);
free (buffer);
return buf;
}
/* gst_x264_enc_set_src_caps
* Returns: TRUE on success.
*/
static gboolean
gst_x264_enc_set_src_caps (GstX264Enc * encoder, GstPad * pad, GstCaps * caps)
{
GstStructure *structure;
GValue header = { 0, };
GstBuffer *buf;
GstCaps *outcaps;
gboolean res;
structure = gst_caps_get_structure (caps, 0);
structure = gst_structure_copy (structure);
gst_structure_set_name (structure, "video/x-h264");
if (!encoder->byte_stream) {
buf = gst_x264_enc_header_buf (encoder);
if (buf != NULL) {
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_IN_CAPS);
g_value_init (&header, GST_TYPE_BUFFER);
gst_value_set_buffer (&header, buf);
gst_structure_set_value (structure, "codec_data", &header);
g_value_unset (&header);
}
}
outcaps = gst_caps_new_full (structure, NULL);
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));
GstStructure *structure;
const GValue *framerate, *par;
gint width, height;
gint framerate_num, framerate_den;
gint par_num, par_den;
structure = gst_caps_get_structure (caps, 0);
if (!gst_structure_get_int (structure, "width", &width))
return FALSE;
if (!gst_structure_get_int (structure, "height", &height))
return FALSE;
if (!(framerate = gst_structure_get_value (structure, "framerate")))
return FALSE;
framerate_num = gst_value_get_fraction_numerator (framerate);
framerate_den = gst_value_get_fraction_denominator (framerate);
if (!(par = gst_structure_get_value (structure, "pixel-aspect-ratio"))) {
par_num = 1;
par_den = 1;
} else {
par_num = gst_value_get_fraction_numerator (par);
par_den = gst_value_get_fraction_denominator (par);
}
/* If the encoder is initialized, do not
reinitialize it again if not necessary */
if (encoder->x264enc) {
gboolean caps_same = width == encoder->width
&& height == encoder->height
&& framerate_num == encoder->framerate_num
&& framerate_den == encoder->framerate_den
&& par_num == encoder->par_num && par_den == encoder->par_den;
GstFlowReturn flow_ret;
int i_nal;
if (caps_same)
/* Negotiating the same caps */
return TRUE;
do {
flow_ret = gst_x264_enc_encode_frame (encoder, NULL, &i_nal);
} while (flow_ret == GST_FLOW_OK && i_nal > 0);
encoder->sps_id++;
}
encoder->width = width;
encoder->height = height;
encoder->framerate_num = framerate_num;
encoder->framerate_den = framerate_den;
encoder->par_num = par_num;
encoder->par_den = par_den;
/* FIXME: is this correct for odd widths/heights? (tpm) */
encoder->stride = encoder->width;
encoder->luma_plane_size = encoder->width * encoder->height;
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 void
gst_x264_enc_base_init (gpointer g_class)
{
static GstElementDetails plugin_details = {
"x264enc",
"Codec/Encoder/Video",
"H264 Encoder",
"Josef Zlomek <josef.zlomek@itonis.tv>"
};
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&src_factory));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&sink_factory));
gst_element_class_set_details (element_class, &plugin_details);
}
static void
gst_x264_enc_class_init (GstX264EncClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
gobject_class->set_property = gst_x264_enc_set_property;
gobject_class->get_property = gst_x264_enc_get_property;
gobject_class->dispose = gst_x264_enc_dispose;
gstelement_class->change_state =
GST_DEBUG_FUNCPTR (gst_x264_enc_change_state);
g_object_class_install_property (gobject_class, ARG_THREADS,
g_param_spec_uint ("threads", "Threads",
"Number of threads used by the codec", 1, 4, ARG_THREADS_DEFAULT,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_PASS,
g_param_spec_uint ("pass", "Pass",
"Pass of multipass encoding (0=single pass; 1=first pass, 2=middle pass, 3=last pass)",
0, 3, ARG_PASS_DEFAULT, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_STATS_FILE,
g_param_spec_string ("stats_file", "Stats File",
"Filename for multipass statistics", ARG_STATS_FILE_DEFAULT,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_BYTE_STREAM,
g_param_spec_boolean ("byte_stream", "Byte Stream",
"Generate byte stream format of NALU", ARG_BYTE_STREAM_DEFAULT,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_BITRATE,
g_param_spec_uint ("bitrate", "Bitrate", "Bitrate in kbit/sec", 1,
100 * 1024, ARG_BITRATE_DEFAULT, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_VBV_BUF_CAPACITY,
g_param_spec_uint ("vbv_buf_capacity", "VBV buffer capacity",
"Size of the VBV buffer in milliseconds", 300,
10000, ARG_VBV_BUF_CAPACITY_DEFAULT, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_ME,
g_param_spec_enum ("me", "Motion Estimation",
"Integer pixel motion estimation method", GST_X264_ENC_ME_TYPE,
ARG_ME_DEFAULT, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_SUBME,
g_param_spec_uint ("subme", "Subpixel Motion Estimation",
"Subpixel motion estimation and partition decision quality: 1=fast, 6=best",
1, 6, ARG_SUBME_DEFAULT, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_ANALYSE,
g_param_spec_flags ("analyse", "Analyse", "Partitions to consider",
GST_X264_ENC_ANALYSE_TYPE, ARG_ANALYSE_DEFAULT, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_DCT8x8,
g_param_spec_boolean ("dct8x8", "DCT8x8",
"Adaptive spatial transform size", ARG_DCT8x8_DEFAULT,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_REF,
g_param_spec_uint ("ref", "Reference Frames",
"Number of reference frames", 1, 12, ARG_REF_DEFAULT,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_BFRAMES,
g_param_spec_uint ("bframes", "B-Frames",
"Number of B-frames between I and P", 0, 4, ARG_BFRAMES_DEFAULT,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_B_PYRAMID,
g_param_spec_boolean ("b_pyramid", "B-Pyramid",
"Keep some B-frames as references", ARG_B_PYRAMID_DEFAULT,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_WEIGHTB,
g_param_spec_boolean ("weightb", "Weighted B-Frames",
"Weighted prediction for B-frames", ARG_WEIGHTB_DEFAULT,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_SPS_ID,
g_param_spec_uint ("sps_id", "SPS ID",
"SPS and PPS ID number", 0, 31, ARG_SPS_ID_DEFAULT,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_TRELLIS,
g_param_spec_boolean ("trellis", "Trellis quantization",
"Enable trellis searched quantization", ARG_TRELLIS_DEFAULT,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_KEYINT_MAX,
g_param_spec_uint ("key_int_max", "Key-frame maximal interval",
"Maximal distance between two key-frames (0 for automatic)", 0,
G_MAXINT, ARG_KEYINT_MAX_DEFAULT, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_CABAC,
g_param_spec_boolean ("cabac", "Use CABAC",
"Enable CABAC entropy coding", ARG_CABAC_DEFAULT, G_PARAM_READWRITE));
}
/* initialize the new element
* instantiate pads and add them to element
* set functions
* initialize structure
*/
static void
gst_x264_enc_init (GstX264Enc * encoder, GstX264EncClass * klass)
{
encoder->sinkpad = gst_pad_new_from_static_template (&sink_factory, "sink");
gst_pad_set_setcaps_function (encoder->sinkpad,
GST_DEBUG_FUNCPTR (gst_x264_enc_sink_set_caps));
gst_pad_set_event_function (encoder->sinkpad,
GST_DEBUG_FUNCPTR (gst_x264_enc_sink_event));
gst_pad_set_chain_function (encoder->sinkpad,
GST_DEBUG_FUNCPTR (gst_x264_enc_chain));
gst_element_add_pad (GST_ELEMENT (encoder), encoder->sinkpad);
encoder->srcpad = gst_pad_new_from_static_template (&src_factory, "src");
gst_pad_use_fixed_caps (encoder->srcpad);
gst_element_add_pad (GST_ELEMENT (encoder), encoder->srcpad);
/* initialize internals */
encoder->x264enc = NULL;
encoder->width = 16;
encoder->height = 16;
encoder->threads = ARG_THREADS_DEFAULT;
encoder->pass = ARG_PASS_DEFAULT;
encoder->stats_file = g_strdup (ARG_STATS_FILE_DEFAULT);
encoder->byte_stream = ARG_BYTE_STREAM_DEFAULT;
encoder->bitrate = ARG_BITRATE_DEFAULT;
encoder->vbv_buf_capacity = ARG_VBV_BUF_CAPACITY_DEFAULT;
encoder->me = ARG_ME_DEFAULT;
encoder->subme = ARG_SUBME_DEFAULT;
encoder->analyse = ARG_ANALYSE_DEFAULT;
encoder->dct8x8 = ARG_DCT8x8_DEFAULT;
encoder->ref = ARG_REF_DEFAULT;
encoder->bframes = ARG_BFRAMES_DEFAULT;
encoder->b_pyramid = ARG_B_PYRAMID_DEFAULT;
encoder->weightb = ARG_WEIGHTB_DEFAULT;
encoder->sps_id = ARG_SPS_ID_DEFAULT;
encoder->trellis = ARG_TRELLIS_DEFAULT;
encoder->keyint_max = ARG_KEYINT_MAX_DEFAULT;
encoder->cabac = ARG_CABAC_DEFAULT;
encoder->last_timestamp = GST_CLOCK_TIME_NONE;
gst_x264_enc_timestamp_queue_init (encoder);
encoder->buffer_size = 1040000;
encoder->buffer = g_malloc (encoder->buffer_size);
x264_param_default (&encoder->x264param);
}
/*
* gst_x264_enc_init_encoder
* @encoder: Encoder which should be initialized.
*
* Initialize x264 encoder.
*
*/
static gboolean
gst_x264_enc_init_encoder (GstX264Enc * encoder)
{
/* make sure that the encoder is closed */
gst_x264_enc_close_encoder (encoder);
/* set up encoder parameters */
encoder->x264param.i_threads = encoder->threads;
encoder->x264param.i_fps_num = encoder->framerate_num;
encoder->x264param.i_fps_den = encoder->framerate_den;
encoder->x264param.i_width = encoder->width;
encoder->x264param.i_height = encoder->height;
if (encoder->par_den > 0) {
encoder->x264param.vui.i_sar_width = encoder->par_num;
encoder->x264param.vui.i_sar_height = encoder->par_den;
}
encoder->x264param.i_keyint_max = encoder->keyint_max ? encoder->keyint_max :
(2 * encoder->framerate_num / encoder->framerate_den);
encoder->x264param.b_cabac = encoder->cabac;
encoder->x264param.b_aud = 1;
encoder->x264param.i_sps_id = encoder->sps_id;
if ((((encoder->height == 576) && ((encoder->width == 720)
|| (encoder->width == 704) || (encoder->width == 352)))
|| ((encoder->height == 288) && (encoder->width == 352)))
&& (encoder->framerate_den == 1) && (encoder->framerate_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->framerate_den == 1001) && ((encoder->framerate_num == 30000)
|| (encoder->framerate_num == 24000))) {
encoder->x264param.vui.i_vidformat = 2; /* NTSC */
} else
encoder->x264param.vui.i_vidformat = 5; /* unspecified */
encoder->x264param.analyse.i_trellis = encoder->trellis ? 1 : 0;
encoder->x264param.analyse.b_psnr = 0;
/*encoder->x264param.analyse.b_ssim = 0; */
encoder->x264param.analyse.i_me_method = encoder->me;
encoder->x264param.analyse.i_subpel_refine = encoder->subme;
encoder->x264param.analyse.inter = encoder->analyse;
encoder->x264param.analyse.b_transform_8x8 = encoder->dct8x8;
encoder->x264param.analyse.b_weighted_bipred = encoder->weightb;
/*encoder->x264param.analyse.i_noise_reduction = 600; */
encoder->x264param.i_frame_reference = encoder->ref;
encoder->x264param.i_bframe = encoder->bframes;
encoder->x264param.b_bframe_pyramid = encoder->b_pyramid;
encoder->x264param.b_bframe_adaptive = 0;
encoder->x264param.b_deblocking_filter = 1;
encoder->x264param.i_deblocking_filter_alphac0 = 0;
encoder->x264param.i_deblocking_filter_beta = 0;
#ifdef X264_RC_ABR
encoder->x264param.rc.i_rc_method = X264_RC_ABR;
#endif
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;
switch (encoder->pass) {
case 0:
encoder->x264param.rc.b_stat_read = 0;
encoder->x264param.rc.b_stat_write = 0;
break;
case 1:
/* Turbo mode parameters. */
encoder->x264param.i_frame_reference = (encoder->ref + 1) >> 1;
encoder->x264param.analyse.i_subpel_refine =
CLAMP (encoder->subme - 1, 1, 3);
encoder->x264param.analyse.inter &= ~X264_ANALYSE_PSUB8x8;
encoder->x264param.analyse.inter &= ~X264_ANALYSE_BSUB16x16;
encoder->x264param.analyse.i_trellis = 0;
encoder->x264param.rc.b_stat_read = 0;
encoder->x264param.rc.b_stat_write = 1;
break;
case 2:
encoder->x264param.rc.b_stat_read = 1;
encoder->x264param.rc.b_stat_write = 1;
break;
case 3:
encoder->x264param.rc.b_stat_read = 1;
encoder->x264param.rc.b_stat_write = 0;
break;
}
encoder->x264param.rc.psz_stat_in = encoder->stats_file;
encoder->x264param.rc.psz_stat_out = encoder->stats_file;
encoder->x264enc = x264_encoder_open (&encoder->x264param);
if (!encoder->x264enc) {
GST_ELEMENT_ERROR (encoder, STREAM, ENCODE,
("Can not initialize x264 encoder."), (""));
return FALSE;
}
return TRUE;
}
/* gst_x264_enc_close_encoder
* @encoder: Encoder which should close.
*
* Close x264 encoder.
*/
static void
gst_x264_enc_close_encoder (GstX264Enc * encoder)
{
if (encoder->x264enc != NULL) {
x264_encoder_close (encoder->x264enc);
encoder->x264enc = NULL;
}
}
static void
gst_x264_enc_dispose (GObject * object)
{
GstX264Enc *encoder = GST_X264_ENC (object);
g_free (encoder->stats_file);
encoder->stats_file = NULL;
g_free (encoder->buffer);
encoder->buffer = NULL;
gst_x264_enc_timestamp_queue_free (encoder);
gst_x264_enc_close_encoder (encoder);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static gboolean
gst_x264_enc_sink_event (GstPad * pad, GstEvent * event)
{
gboolean ret;
GstX264Enc *encoder;
encoder = GST_X264_ENC (gst_pad_get_parent (pad));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:{
GstFlowReturn flow_ret;
int i_nal;
/* first send the rest NAL units */
do {
flow_ret = gst_x264_enc_encode_frame (encoder, NULL, &i_nal);
} while (flow_ret == GST_FLOW_OK && i_nal > 0);
/* then push the EOS downstream */
ret = gst_pad_push_event (encoder->srcpad, event);
break;
}
default:
ret = gst_pad_push_event (encoder->srcpad, event);
break;
}
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;
int i_nal;
if (G_UNLIKELY (encoder->x264enc == NULL))
goto not_inited;
/* create x264_picture_t from the buffer */
/* mostly taken from mplayer (file ve_x264.c) */
/* FIXME: this looks wrong for odd widths/heights (tpm) */
if (G_UNLIKELY (GST_BUFFER_SIZE (buf) < encoder->luma_plane_size * 6 / 4))
goto wrong_buffer_size;
/* ignore duplicated packets */
if (GST_CLOCK_TIME_IS_VALID (GST_BUFFER_TIMESTAMP (buf))) {
if (GST_CLOCK_TIME_IS_VALID (encoder->last_timestamp)) {
GstClockTimeDiff diff =
GST_BUFFER_TIMESTAMP (buf) - encoder->last_timestamp;
if (diff <= 0) {
GST_ELEMENT_WARNING (encoder, STREAM, ENCODE,
("Duplicated packet in input, dropping"),
("Time difference was -%" GST_TIME_FORMAT, GST_TIME_ARGS (-diff)));
gst_buffer_unref (buf);
return GST_FLOW_OK;
}
}
encoder->last_timestamp = GST_BUFFER_TIMESTAMP (buf);
}
/* remember the timestamp and duration */
gst_x264_enc_timestamp_queue_put (encoder, GST_BUFFER_TIMESTAMP (buf),
GST_BUFFER_DURATION (buf));
memset (&pic_in, 0, sizeof (x264_picture_t));
pic_in.img.i_csp = X264_CSP_I420;
pic_in.img.i_plane = 3;
/* FIXME: again, this looks wrong for odd widths/heights (tpm) */
pic_in.img.plane[0] = (guint8 *) (GST_BUFFER_DATA (buf));
pic_in.img.i_stride[0] = encoder->stride;
pic_in.img.plane[1] = pic_in.img.plane[0]
+ encoder->luma_plane_size;
pic_in.img.i_stride[1] = encoder->stride / 2;
pic_in.img.plane[2] = pic_in.img.plane[1]
+ encoder->luma_plane_size / 4;
pic_in.img.i_stride[2] = encoder->stride / 2;
pic_in.img.plane[3] = NULL;
pic_in.img.i_stride[3] = 0;
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);
gst_buffer_unref (buf);
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->luma_plane_size * 6 / 4));
gst_buffer_unref (buf);
return GST_FLOW_ERROR;
}
}
static GstFlowReturn
gst_x264_enc_encode_frame (GstX264Enc * encoder, x264_picture_t * pic_in,
int *i_nal)
{
GstBuffer *out_buf = NULL;
x264_picture_t pic_out;
x264_nal_t *nal;
int i_size;
int nal_size;
int encoder_return;
gint i;
GstFlowReturn ret;
GstClockTime timestamp;
GstClockTime duration;
if (G_UNLIKELY (encoder->x264enc == NULL))
return GST_FLOW_NOT_NEGOTIATED;
encoder_return = x264_encoder_encode (encoder->x264enc,
&nal, i_nal, pic_in, &pic_out);
if (encoder_return < 0) {
GST_ELEMENT_ERROR (encoder, STREAM, ENCODE,
("Encode x264 frame failed."),
("x264_encoder_encode return code=%d", encoder_return));
return GST_FLOW_ERROR;
}
if (!*i_nal) {
return GST_FLOW_OK;
}
i_size = 0;
for (i = 0; i < *i_nal; i++) {
int i_data = encoder->buffer_size - i_size - 4;
if (i_data < encoder->buffer_size / 2) {
encoder->buffer_size *= 2;
encoder->buffer = g_realloc (encoder->buffer, encoder->buffer_size);
i_data = encoder->buffer_size - i_size;
}
nal_size =
x264_nal_encode (encoder->buffer + i_size + 4, &i_data, 0, &nal[i]);
if (encoder->byte_stream) {
encoder->buffer[i_size + 0] = 0;
encoder->buffer[i_size + 1] = 0;
encoder->buffer[i_size + 2] = 0;
encoder->buffer[i_size + 3] = 1;
} else {
encoder->buffer[i_size + 0] = (nal_size >> 24) & 0xff;
encoder->buffer[i_size + 1] = (nal_size >> 16) & 0xff;
encoder->buffer[i_size + 2] = (nal_size >> 8) & 0xff;
encoder->buffer[i_size + 3] = nal_size & 0xff;
}
i_size += nal_size + 4;
}
ret = gst_pad_alloc_buffer (encoder->srcpad, GST_BUFFER_OFFSET_NONE,
i_size, GST_PAD_CAPS (encoder->srcpad), &out_buf);
if (ret != GST_FLOW_OK)
return ret;
memcpy (GST_BUFFER_DATA (out_buf), encoder->buffer, i_size);
GST_BUFFER_SIZE (out_buf) = i_size;
gst_x264_enc_timestamp_queue_get (encoder, &timestamp, &duration);
/* PTS */
GST_BUFFER_TIMESTAMP (out_buf) = pic_out.i_pts;
if (encoder->bframes) {
/* When using B-frames, the frames will be reordered.
Make PTS start one frame after DTS. */
GST_BUFFER_TIMESTAMP (out_buf)
+= GST_SECOND * encoder->framerate_den / encoder->framerate_num;
}
GST_BUFFER_DURATION (out_buf) = duration;
if (pic_out.i_type == X264_TYPE_IDR) {
GST_BUFFER_FLAG_UNSET (out_buf, GST_BUFFER_FLAG_DELTA_UNIT);
} else {
GST_BUFFER_FLAG_SET (out_buf, GST_BUFFER_FLAG_DELTA_UNIT);
}
return gst_pad_push (encoder->srcpad, out_buf);
}
static 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_READY_TO_NULL:
gst_x264_enc_close_encoder (encoder);
break;
default:
break;
}
out:
return ret;
}
static void
gst_x264_enc_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstX264Enc *encoder;
encoder = GST_X264_ENC (object);
/* FIXME: should probably do locking or check state */
switch (prop_id) {
case ARG_THREADS:
encoder->threads = g_value_get_uint (value);
break;
case ARG_PASS:
encoder->pass = g_value_get_uint (value);
break;
case ARG_STATS_FILE:
if (encoder->stats_file)
g_free (encoder->stats_file);
encoder->stats_file = g_value_dup_string (value);
break;
case ARG_BYTE_STREAM:
encoder->byte_stream = g_value_get_boolean (value);
break;
case ARG_BITRATE:
encoder->bitrate = g_value_get_uint (value);
break;
case ARG_VBV_BUF_CAPACITY:
encoder->vbv_buf_capacity = g_value_get_uint (value);
break;
case ARG_ME:
encoder->me = g_value_get_enum (value);
break;
case ARG_SUBME:
encoder->subme = g_value_get_uint (value);
break;
case ARG_ANALYSE:
encoder->analyse = g_value_get_flags (value);
break;
case ARG_DCT8x8:
encoder->dct8x8 = g_value_get_boolean (value);
break;
case ARG_REF:
encoder->ref = g_value_get_uint (value);
break;
case ARG_BFRAMES:
encoder->bframes = g_value_get_uint (value);
gst_x264_enc_timestamp_queue_free (encoder);
gst_x264_enc_timestamp_queue_init (encoder);
break;
case ARG_B_PYRAMID:
encoder->b_pyramid = g_value_get_boolean (value);
break;
case ARG_WEIGHTB:
encoder->weightb = g_value_get_boolean (value);
break;
case ARG_SPS_ID:
encoder->sps_id = g_value_get_uint (value);
break;
case ARG_TRELLIS:
encoder->trellis = g_value_get_boolean (value);
break;
case ARG_KEYINT_MAX:
encoder->keyint_max = g_value_get_uint (value);
break;
case ARG_CABAC:
encoder->cabac = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_x264_enc_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstX264Enc *encoder;
encoder = GST_X264_ENC (object);
/* FIXME: should probably do locking or check state */
switch (prop_id) {
case ARG_THREADS:
g_value_set_uint (value, encoder->threads);
break;
case ARG_PASS:
g_value_set_uint (value, encoder->pass);
break;
case ARG_STATS_FILE:
g_value_set_string (value, encoder->stats_file);
break;
case ARG_BYTE_STREAM:
g_value_set_boolean (value, encoder->byte_stream);
break;
case ARG_BITRATE:
g_value_set_uint (value, encoder->bitrate);
break;
case ARG_VBV_BUF_CAPACITY:
g_value_set_uint (value, encoder->vbv_buf_capacity);
break;
case ARG_ME:
g_value_set_enum (value, encoder->me);
break;
case ARG_SUBME:
g_value_set_uint (value, encoder->subme);
break;
case ARG_ANALYSE:
g_value_set_flags (value, encoder->analyse);
break;
case ARG_DCT8x8:
g_value_set_boolean (value, encoder->dct8x8);
break;
case ARG_REF:
g_value_set_uint (value, encoder->ref);
break;
case ARG_BFRAMES:
g_value_set_uint (value, encoder->bframes);
break;
case ARG_B_PYRAMID:
g_value_set_boolean (value, encoder->b_pyramid);
break;
case ARG_WEIGHTB:
g_value_set_boolean (value, encoder->weightb);
break;
case ARG_SPS_ID:
g_value_set_uint (value, encoder->sps_id);
break;
case ARG_TRELLIS:
g_value_set_boolean (value, encoder->trellis);
break;
case ARG_KEYINT_MAX:
g_value_set_uint (value, encoder->keyint_max);
break;
case ARG_CABAC:
g_value_set_boolean (value, encoder->cabac);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
plugin_init (GstPlugin * plugin)
{
return gst_element_register (plugin, "x264enc",
GST_RANK_NONE, GST_TYPE_X264_ENC);
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"x264",
"libx264-based H264 plugins",
plugin_init, VERSION, "GPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
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