gstreamer/ext/ffmpeg/gstffmpegmux.c
2011-06-08 18:04:07 +02:00

984 lines
29 KiB
C

/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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 <string.h>
#ifdef HAVE_FFMPEG_UNINSTALLED
#include <avformat.h>
#else
#include <libavformat/avformat.h>
#endif
#include <gst/gst.h>
#include <gst/base/gstcollectpads.h>
#include "gstffmpeg.h"
#include "gstffmpegcodecmap.h"
#include "gstffmpegutils.h"
typedef struct _GstFFMpegMux GstFFMpegMux;
typedef struct _GstFFMpegMuxPad GstFFMpegMuxPad;
struct _GstFFMpegMuxPad
{
GstCollectData collect; /* we extend the CollectData */
gint padnum;
};
struct _GstFFMpegMux
{
GstElement element;
GstCollectPads *collect;
/* We need to keep track of our pads, so we do so here. */
GstPad *srcpad;
AVFormatContext *context;
gboolean opened;
gint videopads, audiopads;
/*< private > */
/* event_function is the collectpads default eventfunction */
GstPadEventFunction event_function;
int preload;
int max_delay;
};
typedef struct _GstFFMpegMuxClass GstFFMpegMuxClass;
struct _GstFFMpegMuxClass
{
GstElementClass parent_class;
AVOutputFormat *in_plugin;
};
#define GST_TYPE_FFMPEGMUX \
(gst_ffmpegdec_get_type())
#define GST_FFMPEGMUX(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_FFMPEGMUX,GstFFMpegMux))
#define GST_FFMPEGMUX_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_FFMPEGMUX,GstFFMpegMuxClass))
#define GST_IS_FFMPEGMUX(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_FFMPEGMUX))
#define GST_IS_FFMPEGMUX_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_FFMPEGMUX))
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
ARG_0,
/* FILL ME */
};
enum
{
PROP_0,
PROP_PRELOAD,
PROP_MAXDELAY
};
/* A number of function prototypes are given so we can refer to them later. */
static void gst_ffmpegmux_class_init (GstFFMpegMuxClass * klass);
static void gst_ffmpegmux_base_init (gpointer g_class);
static void gst_ffmpegmux_init (GstFFMpegMux * ffmpegmux,
GstFFMpegMuxClass * g_class);
static void gst_ffmpegmux_finalize (GObject * object);
static gboolean gst_ffmpegmux_setcaps (GstPad * pad, GstCaps * caps);
static GstPad *gst_ffmpegmux_request_new_pad (GstElement * element,
GstPadTemplate * templ, const gchar * name, const GstCaps * caps);
static GstFlowReturn gst_ffmpegmux_collected (GstCollectPads * pads,
gpointer user_data);
static gboolean gst_ffmpegmux_sink_event (GstPad * pad, GstEvent * event);
static GstStateChangeReturn gst_ffmpegmux_change_state (GstElement * element,
GstStateChange transition);
static void gst_ffmpegmux_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_ffmpegmux_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstCaps *gst_ffmpegmux_get_id_caps (enum CodecID *id_list);
static void gst_ffmpeg_mux_simple_caps_set_int_list (GstCaps * caps,
const gchar * field, guint num, const gint * values);
#define GST_FFMUX_PARAMS_QDATA g_quark_from_static_string("ffmux-params")
static GstElementClass *parent_class = NULL;
/*static guint gst_ffmpegmux_signals[LAST_SIGNAL] = { 0 }; */
typedef struct
{
const char *name;
const char *replacement;
} GstFFMpegMuxReplacement;
static const char *
gst_ffmpegmux_get_replacement (const char *name)
{
static const GstFFMpegMuxReplacement blacklist[] = {
{"avi", "avimux"},
{"matroska", "matroskamux"},
{"mov", "qtmux"},
{"mpegts", "mpegtsmux"},
{"mp4", "mp4mux"},
{"mpjpeg", "multipartmux"},
{"ogg", "oggmux"},
{"wav", "wavenc"},
{"webm", "webmmux"},
{"mxf", "mxfmux"},
{"3gp", "gppmux"},
{"yuv4mpegpipe", "y4menc"},
{"aiff", "aiffmux"},
{"adts", "aacparse"},
{"asf", "asfmux"},
{"asf_stream", "asfmux"},
{"flv", "flvmux"},
{"mp3", "id3v2mux"},
{"mp2", "id3v2mux"}
};
int i;
for (i = 0; i < sizeof (blacklist) / sizeof (blacklist[0]); i++) {
if (strcmp (blacklist[i].name, name) == 0) {
return blacklist[i].replacement;
}
}
return NULL;
}
static gboolean
gst_ffmpegmux_is_formatter (const char *name)
{
static const char *replace[] = {
"mp2", "mp3", NULL
};
int i;
for (i = 0; replace[i]; i++)
if (strcmp (replace[i], name) == 0)
return TRUE;
return FALSE;
}
static void
gst_ffmpegmux_base_init (gpointer g_class)
{
GstFFMpegMuxClass *klass = (GstFFMpegMuxClass *) g_class;
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
GstPadTemplate *videosinktempl, *audiosinktempl, *srctempl;
AVOutputFormat *in_plugin;
GstCaps *srccaps, *audiosinkcaps, *videosinkcaps;
enum CodecID *video_ids = NULL, *audio_ids = NULL;
gchar *longname, *description;
const char *replacement;
gboolean is_formatter;
in_plugin =
(AVOutputFormat *) g_type_get_qdata (G_OBJECT_CLASS_TYPE (klass),
GST_FFMUX_PARAMS_QDATA);
g_assert (in_plugin != NULL);
/* construct the element details struct */
replacement = gst_ffmpegmux_get_replacement (in_plugin->name);
is_formatter = gst_ffmpegmux_is_formatter (in_plugin->name);
if (replacement != NULL) {
longname =
g_strdup_printf ("FFmpeg %s %s (not recommended, use %s instead)",
in_plugin->long_name, is_formatter ? "formatter" : "muxer",
replacement);
description =
g_strdup_printf ("FFmpeg %s %s (not recommended, use %s instead)",
in_plugin->long_name, is_formatter ? "formatter" : "muxer",
replacement);
} else {
longname = g_strdup_printf ("FFmpeg %s %s", in_plugin->long_name,
is_formatter ? "formatter" : "muxer");
description = g_strdup_printf ("FFmpeg %s %s", in_plugin->long_name,
is_formatter ? "formatter" : "muxer");
}
gst_element_class_set_details_simple (element_class, longname,
is_formatter ? "Formatter/Metadata" : "Codec/Muxer", description,
"Wim Taymans <wim.taymans@chello.be>, "
"Ronald Bultje <rbultje@ronald.bitfreak.net>");
g_free (longname);
g_free (description);
/* Try to find the caps that belongs here */
srccaps = gst_ffmpeg_formatid_to_caps (in_plugin->name);
if (!srccaps) {
GST_DEBUG ("Couldn't get source caps for muxer '%s', skipping format",
in_plugin->name);
goto beach;
}
if (!gst_ffmpeg_formatid_get_codecids (in_plugin->name,
&video_ids, &audio_ids, in_plugin)) {
gst_caps_unref (srccaps);
GST_DEBUG
("Couldn't get sink caps for muxer '%s'. Most likely because no input format mapping exists.",
in_plugin->name);
goto beach;
}
videosinkcaps = video_ids ? gst_ffmpegmux_get_id_caps (video_ids) : NULL;
audiosinkcaps = audio_ids ? gst_ffmpegmux_get_id_caps (audio_ids) : NULL;
/* fix up allowed caps for some muxers */
/* FIXME : This should be in gstffmpegcodecmap.c ! */
if (strcmp (in_plugin->name, "flv") == 0) {
const gint rates[] = { 44100, 22050, 11025 };
gst_ffmpeg_mux_simple_caps_set_int_list (audiosinkcaps, "rate", 3, rates);
} else if (strcmp (in_plugin->name, "gif") == 0) {
if (videosinkcaps)
gst_caps_unref (videosinkcaps);
videosinkcaps =
gst_caps_from_string ("video/x-raw-rgb, bpp=(int)24, depth=(int)24");
}
/* pad templates */
srctempl = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, srccaps);
gst_element_class_add_pad_template (element_class, srctempl);
if (audiosinkcaps) {
audiosinktempl = gst_pad_template_new ("audio_%d",
GST_PAD_SINK, GST_PAD_REQUEST, audiosinkcaps);
gst_element_class_add_pad_template (element_class, audiosinktempl);
}
if (videosinkcaps) {
videosinktempl = gst_pad_template_new ("video_%d",
GST_PAD_SINK, GST_PAD_REQUEST, videosinkcaps);
gst_element_class_add_pad_template (element_class, videosinktempl);
}
beach:
klass->in_plugin = in_plugin;
}
static void
gst_ffmpegmux_class_init (GstFFMpegMuxClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
parent_class = g_type_class_peek_parent (klass);
gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_ffmpegmux_set_property);
gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_ffmpegmux_get_property);
g_object_class_install_property (gobject_class, PROP_PRELOAD,
g_param_spec_int ("preload", "preload",
"Set the initial demux-decode delay (in microseconds)", 0, G_MAXINT,
0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_MAXDELAY,
g_param_spec_int ("maxdelay", "maxdelay",
"Set the maximum demux-decode delay (in microseconds)", 0, G_MAXINT,
0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
gstelement_class->request_new_pad = gst_ffmpegmux_request_new_pad;
gstelement_class->change_state = gst_ffmpegmux_change_state;
gobject_class->finalize = gst_ffmpegmux_finalize;
}
static void
gst_ffmpegmux_init (GstFFMpegMux * ffmpegmux, GstFFMpegMuxClass * g_class)
{
GstElementClass *klass = GST_ELEMENT_CLASS (g_class);
GstFFMpegMuxClass *oclass = (GstFFMpegMuxClass *) klass;
GstPadTemplate *templ = gst_element_class_get_pad_template (klass, "src");
ffmpegmux->srcpad = gst_pad_new_from_template (templ, "src");
gst_pad_set_caps (ffmpegmux->srcpad, gst_pad_template_get_caps (templ));
gst_element_add_pad (GST_ELEMENT (ffmpegmux), ffmpegmux->srcpad);
ffmpegmux->collect = gst_collect_pads_new ();
gst_collect_pads_set_function (ffmpegmux->collect,
(GstCollectPadsFunction) gst_ffmpegmux_collected, ffmpegmux);
ffmpegmux->context = g_new0 (AVFormatContext, 1);
ffmpegmux->context->oformat = oclass->in_plugin;
ffmpegmux->context->nb_streams = 0;
g_snprintf (ffmpegmux->context->filename,
sizeof (ffmpegmux->context->filename),
"gstreamer://%p", ffmpegmux->srcpad);
ffmpegmux->opened = FALSE;
ffmpegmux->videopads = 0;
ffmpegmux->audiopads = 0;
ffmpegmux->preload = 0;
ffmpegmux->max_delay = 0;
}
static void
gst_ffmpegmux_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstFFMpegMux *src;
src = (GstFFMpegMux *) object;
switch (prop_id) {
case PROP_PRELOAD:
src->preload = g_value_get_int (value);
break;
case PROP_MAXDELAY:
src->max_delay = g_value_get_int (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_ffmpegmux_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstFFMpegMux *src;
src = (GstFFMpegMux *) object;
switch (prop_id) {
case PROP_PRELOAD:
g_value_set_int (value, src->preload);
break;
case PROP_MAXDELAY:
g_value_set_int (value, src->max_delay);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_ffmpegmux_finalize (GObject * object)
{
GstFFMpegMux *ffmpegmux = (GstFFMpegMux *) object;
g_free (ffmpegmux->context);
gst_object_unref (ffmpegmux->collect);
if (G_OBJECT_CLASS (parent_class)->finalize)
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static GstPad *
gst_ffmpegmux_request_new_pad (GstElement * element,
GstPadTemplate * templ, const gchar * name, const GstCaps * caps)
{
GstFFMpegMux *ffmpegmux = (GstFFMpegMux *) element;
GstElementClass *klass = GST_ELEMENT_GET_CLASS (element);
GstFFMpegMuxPad *collect_pad;
gchar *padname;
GstPad *pad;
AVStream *st;
enum AVMediaType type;
gint bitrate = 0, framesize = 0;
g_return_val_if_fail (templ != NULL, NULL);
g_return_val_if_fail (templ->direction == GST_PAD_SINK, NULL);
g_return_val_if_fail (ffmpegmux->opened == FALSE, NULL);
/* figure out a name that *we* like */
if (templ == gst_element_class_get_pad_template (klass, "video_%d")) {
padname = g_strdup_printf ("video_%d", ffmpegmux->videopads++);
type = AVMEDIA_TYPE_VIDEO;
bitrate = 64 * 1024;
framesize = 1152;
} else if (templ == gst_element_class_get_pad_template (klass, "audio_%d")) {
padname = g_strdup_printf ("audio_%d", ffmpegmux->audiopads++);
type = AVMEDIA_TYPE_AUDIO;
bitrate = 285 * 1024;
} else {
g_warning ("ffmux: unknown pad template!");
return NULL;
}
/* create pad */
pad = gst_pad_new_from_template (templ, padname);
collect_pad = (GstFFMpegMuxPad *)
gst_collect_pads_add_pad (ffmpegmux->collect, pad,
sizeof (GstFFMpegMuxPad));
collect_pad->padnum = ffmpegmux->context->nb_streams;
/* small hack to put our own event pad function and chain up to collect pad */
ffmpegmux->event_function = GST_PAD_EVENTFUNC (pad);
gst_pad_set_event_function (pad,
GST_DEBUG_FUNCPTR (gst_ffmpegmux_sink_event));
gst_element_add_pad (element, pad);
/* AVStream needs to be created */
st = av_new_stream (ffmpegmux->context, collect_pad->padnum);
st->codec->codec_type = type;
st->codec->codec_id = CODEC_ID_NONE; /* this is a check afterwards */
st->stream_copy = 1; /* we're not the actual encoder */
st->codec->bit_rate = bitrate;
st->codec->frame_size = framesize;
/* we fill in codec during capsnego */
/* we love debug output (c) (tm) (r) */
GST_DEBUG ("Created %s pad for ffmux_%s element",
padname, ((GstFFMpegMuxClass *) klass)->in_plugin->name);
g_free (padname);
return pad;
}
/**
* gst_ffmpegmux_setcaps
* @pad: #GstPad
* @caps: New caps.
*
* Set caps to pad.
*
* Returns: #TRUE on success.
*/
static gboolean
gst_ffmpegmux_setcaps (GstPad * pad, GstCaps * caps)
{
GstFFMpegMux *ffmpegmux = (GstFFMpegMux *) (gst_pad_get_parent (pad));
GstFFMpegMuxPad *collect_pad;
AVStream *st;
collect_pad = (GstFFMpegMuxPad *) gst_pad_get_element_private (pad);
st = ffmpegmux->context->streams[collect_pad->padnum];
ffmpegmux->context->preload = ffmpegmux->preload;
ffmpegmux->context->max_delay = ffmpegmux->max_delay;
/* for the format-specific guesses, we'll go to
* our famous codec mapper */
if (gst_ffmpeg_caps_to_codecid (caps, st->codec) == CODEC_ID_NONE)
goto not_accepted;
/* copy over the aspect ratios, ffmpeg expects the stream aspect to match the
* codec aspect. */
st->sample_aspect_ratio = st->codec->sample_aspect_ratio;
GST_LOG_OBJECT (pad, "accepted caps %" GST_PTR_FORMAT, caps);
return TRUE;
/* ERRORS */
not_accepted:
{
GST_LOG_OBJECT (pad, "rejecting caps %" GST_PTR_FORMAT, caps);
return FALSE;
}
}
static gboolean
gst_ffmpegmux_sink_event (GstPad * pad, GstEvent * event)
{
GstFFMpegMux *ffmpegmux = (GstFFMpegMux *) gst_pad_get_parent (pad);
gboolean res = TRUE;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_TAG:{
GstTagList *taglist;
GstTagSetter *setter = GST_TAG_SETTER (ffmpegmux);
const GstTagMergeMode mode = gst_tag_setter_get_tag_merge_mode (setter);
gst_event_parse_tag (event, &taglist);
gst_tag_setter_merge_tags (setter, taglist, mode);
break;
}
case GST_EVENT_CAPS:{
GstCaps *caps;
gst_event_parse_caps (event, &caps);
if (!(res = gst_ffmpegmux_setcaps (pad, caps)))
goto beach;
break;
}
default:
break;
}
/* chaining up to collectpads default event function */
res = ffmpegmux->event_function (pad, event);
beach:
gst_object_unref (ffmpegmux);
return res;
}
static GstFlowReturn
gst_ffmpegmux_collected (GstCollectPads * pads, gpointer user_data)
{
GstFFMpegMux *ffmpegmux = (GstFFMpegMux *) user_data;
GSList *collected;
GstFFMpegMuxPad *best_pad;
GstClockTime best_time;
#if 0
/* Re-enable once converted to new AVMetaData API
* See #566605
*/
const GstTagList *tags;
#endif
/* open "file" (gstreamer protocol to next element) */
if (!ffmpegmux->opened) {
int open_flags = URL_WRONLY;
/* we do need all streams to have started capsnego,
* or things will go horribly wrong */
for (collected = ffmpegmux->collect->data; collected;
collected = g_slist_next (collected)) {
GstFFMpegMuxPad *collect_pad = (GstFFMpegMuxPad *) collected->data;
AVStream *st = ffmpegmux->context->streams[collect_pad->padnum];
/* check whether the pad has successfully completed capsnego */
if (st->codec->codec_id == CODEC_ID_NONE) {
GST_ELEMENT_ERROR (ffmpegmux, CORE, NEGOTIATION, (NULL),
("no caps set on stream %d (%s)", collect_pad->padnum,
(st->codec->codec_type == AVMEDIA_TYPE_VIDEO) ?
"video" : "audio"));
return GST_FLOW_ERROR;
}
/* set framerate for audio */
if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
switch (st->codec->codec_id) {
case CODEC_ID_PCM_S16LE:
case CODEC_ID_PCM_S16BE:
case CODEC_ID_PCM_U16LE:
case CODEC_ID_PCM_U16BE:
case CODEC_ID_PCM_S8:
case CODEC_ID_PCM_U8:
st->codec->frame_size = 1;
break;
default:
{
GstBuffer *buffer;
/* FIXME : This doesn't work for RAW AUDIO...
* in fact I'm wondering if it even works for any kind of audio... */
buffer = gst_collect_pads_peek (ffmpegmux->collect,
(GstCollectData *) collect_pad);
if (buffer) {
st->codec->frame_size =
st->codec->sample_rate *
GST_BUFFER_DURATION (buffer) / GST_SECOND;
gst_buffer_unref (buffer);
}
}
}
}
}
#if 0
/* Re-enable once converted to new AVMetaData API
* See #566605
*/
/* tags */
tags = gst_tag_setter_get_tag_list (GST_TAG_SETTER (ffmpegmux));
if (tags) {
gint i;
gchar *s;
/* get the interesting ones */
if (gst_tag_list_get_string (tags, GST_TAG_TITLE, &s)) {
strncpy (ffmpegmux->context->title, s,
sizeof (ffmpegmux->context->title));
}
if (gst_tag_list_get_string (tags, GST_TAG_ARTIST, &s)) {
strncpy (ffmpegmux->context->author, s,
sizeof (ffmpegmux->context->author));
}
if (gst_tag_list_get_string (tags, GST_TAG_COPYRIGHT, &s)) {
strncpy (ffmpegmux->context->copyright, s,
sizeof (ffmpegmux->context->copyright));
}
if (gst_tag_list_get_string (tags, GST_TAG_COMMENT, &s)) {
strncpy (ffmpegmux->context->comment, s,
sizeof (ffmpegmux->context->comment));
}
if (gst_tag_list_get_string (tags, GST_TAG_ALBUM, &s)) {
strncpy (ffmpegmux->context->album, s,
sizeof (ffmpegmux->context->album));
}
if (gst_tag_list_get_string (tags, GST_TAG_GENRE, &s)) {
strncpy (ffmpegmux->context->genre, s,
sizeof (ffmpegmux->context->genre));
}
if (gst_tag_list_get_int (tags, GST_TAG_TRACK_NUMBER, &i)) {
ffmpegmux->context->track = i;
}
}
#endif
/* set the streamheader flag for gstffmpegprotocol if codec supports it */
if (!strcmp (ffmpegmux->context->oformat->name, "flv")) {
open_flags |= GST_FFMPEG_URL_STREAMHEADER;
}
if (url_fopen (&ffmpegmux->context->pb,
ffmpegmux->context->filename, open_flags) < 0) {
GST_ELEMENT_ERROR (ffmpegmux, LIBRARY, TOO_LAZY, (NULL),
("Failed to open stream context in ffmux"));
return GST_FLOW_ERROR;
}
if (av_set_parameters (ffmpegmux->context, NULL) < 0) {
GST_ELEMENT_ERROR (ffmpegmux, LIBRARY, INIT, (NULL),
("Failed to initialize muxer"));
return GST_FLOW_ERROR;
}
/* now open the mux format */
if (av_write_header (ffmpegmux->context) < 0) {
GST_ELEMENT_ERROR (ffmpegmux, LIBRARY, SETTINGS, (NULL),
("Failed to write file header - check codec settings"));
return GST_FLOW_ERROR;
}
/* we're now opened */
ffmpegmux->opened = TRUE;
/* flush the header so it will be used as streamheader */
put_flush_packet (ffmpegmux->context->pb);
}
/* take the one with earliest timestamp,
* and push it forward */
best_pad = NULL;
best_time = GST_CLOCK_TIME_NONE;
for (collected = ffmpegmux->collect->data; collected;
collected = g_slist_next (collected)) {
GstFFMpegMuxPad *collect_pad = (GstFFMpegMuxPad *) collected->data;
GstBuffer *buffer = gst_collect_pads_peek (ffmpegmux->collect,
(GstCollectData *) collect_pad);
/* if there's no buffer, just continue */
if (buffer == NULL) {
continue;
}
/* if we have no buffer yet, just use the first one */
if (best_pad == NULL) {
best_pad = collect_pad;
best_time = GST_BUFFER_TIMESTAMP (buffer);
goto next_pad;
}
/* if we do have one, only use this one if it's older */
if (GST_BUFFER_TIMESTAMP (buffer) < best_time) {
best_time = GST_BUFFER_TIMESTAMP (buffer);
best_pad = collect_pad;
}
next_pad:
gst_buffer_unref (buffer);
/* Mux buffers with invalid timestamp first */
if (!GST_CLOCK_TIME_IS_VALID (best_time))
break;
}
/* now handle the buffer, or signal EOS if we have
* no buffers left */
if (best_pad != NULL) {
GstBuffer *buf;
AVPacket pkt;
gboolean need_free = FALSE;
gsize size;
/* push out current buffer */
buf = gst_collect_pads_pop (ffmpegmux->collect,
(GstCollectData *) best_pad);
ffmpegmux->context->streams[best_pad->padnum]->codec->frame_number++;
/* set time */
pkt.pts = gst_ffmpeg_time_gst_to_ff (GST_BUFFER_TIMESTAMP (buf),
ffmpegmux->context->streams[best_pad->padnum]->time_base);
pkt.dts = pkt.pts;
if (strcmp (ffmpegmux->context->oformat->name, "gif") == 0) {
AVStream *st = ffmpegmux->context->streams[best_pad->padnum];
AVPicture src, dst;
guint8 *data;
need_free = TRUE;
pkt.size = st->codec->width * st->codec->height * 3;
pkt.data = g_malloc (pkt.size);
dst.data[0] = pkt.data;
dst.data[1] = NULL;
dst.data[2] = NULL;
dst.linesize[0] = st->codec->width * 3;
data = gst_buffer_map (buf, &size, NULL, GST_MAP_READ);
gst_ffmpeg_avpicture_fill (&src, data,
PIX_FMT_RGB24, st->codec->width, st->codec->height);
av_picture_copy (&dst, &src, PIX_FMT_RGB24,
st->codec->width, st->codec->height);
gst_buffer_unmap (buf, data, size);
} else {
pkt.data = gst_buffer_map (buf, &size, NULL, GST_MAP_READ);
pkt.size = size;
}
pkt.stream_index = best_pad->padnum;
pkt.flags = 0;
if (!GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT))
pkt.flags |= AV_PKT_FLAG_KEY;
if (GST_BUFFER_DURATION_IS_VALID (buf))
pkt.duration =
gst_ffmpeg_time_gst_to_ff (GST_BUFFER_DURATION (buf),
ffmpegmux->context->streams[best_pad->padnum]->time_base);
else
pkt.duration = 0;
av_write_frame (ffmpegmux->context, &pkt);
if (need_free) {
g_free (pkt.data);
} else {
gst_buffer_unmap (buf, pkt.data, pkt.size);
}
gst_buffer_unref (buf);
} else {
/* close down */
av_write_trailer (ffmpegmux->context);
ffmpegmux->opened = FALSE;
put_flush_packet (ffmpegmux->context->pb);
url_fclose (ffmpegmux->context->pb);
gst_pad_push_event (ffmpegmux->srcpad, gst_event_new_eos ());
return GST_FLOW_UNEXPECTED;
}
return GST_FLOW_OK;
}
static GstStateChangeReturn
gst_ffmpegmux_change_state (GstElement * element, GstStateChange transition)
{
GstFlowReturn ret;
GstFFMpegMux *ffmpegmux = (GstFFMpegMux *) (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
gst_collect_pads_start (ffmpegmux->collect);
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_collect_pads_stop (ffmpegmux->collect);
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_tag_setter_reset_tags (GST_TAG_SETTER (ffmpegmux));
if (ffmpegmux->opened) {
ffmpegmux->opened = FALSE;
url_fclose (ffmpegmux->context->pb);
}
break;
case GST_STATE_CHANGE_READY_TO_NULL:
break;
default:
break;
}
return ret;
}
static GstCaps *
gst_ffmpegmux_get_id_caps (enum CodecID *id_list)
{
GstCaps *caps, *t;
gint i;
caps = gst_caps_new_empty ();
for (i = 0; id_list[i] != CODEC_ID_NONE; i++) {
if ((t = gst_ffmpeg_codecid_to_caps (id_list[i], NULL, TRUE)))
gst_caps_append (caps, t);
}
if (gst_caps_is_empty (caps)) {
gst_caps_unref (caps);
return NULL;
}
return caps;
}
/* set a list of integer values on the caps, e.g. for sample rates */
static void
gst_ffmpeg_mux_simple_caps_set_int_list (GstCaps * caps, const gchar * field,
guint num, const gint * values)
{
GValue list = { 0, };
GValue val = { 0, };
gint i;
g_return_if_fail (GST_CAPS_IS_SIMPLE (caps));
g_value_init (&list, GST_TYPE_LIST);
g_value_init (&val, G_TYPE_INT);
for (i = 0; i < num; ++i) {
g_value_set_int (&val, values[i]);
gst_value_list_append_value (&list, &val);
}
gst_structure_set_value (gst_caps_get_structure (caps, 0), field, &list);
g_value_unset (&val);
g_value_unset (&list);
}
gboolean
gst_ffmpegmux_register (GstPlugin * plugin)
{
GTypeInfo typeinfo = {
sizeof (GstFFMpegMuxClass),
(GBaseInitFunc) gst_ffmpegmux_base_init,
NULL,
(GClassInitFunc) gst_ffmpegmux_class_init,
NULL,
NULL,
sizeof (GstFFMpegMux),
0,
(GInstanceInitFunc) gst_ffmpegmux_init,
};
static const GInterfaceInfo tag_setter_info = {
NULL, NULL, NULL
};
GType type;
AVOutputFormat *in_plugin;
in_plugin = av_oformat_next (NULL);
GST_LOG ("Registering muxers");
while (in_plugin) {
gchar *type_name;
gchar *p;
GstRank rank = GST_RANK_MARGINAL;
if ((!strncmp (in_plugin->name, "u16", 3)) ||
(!strncmp (in_plugin->name, "s16", 3)) ||
(!strncmp (in_plugin->name, "u24", 3)) ||
(!strncmp (in_plugin->name, "s24", 3)) ||
(!strncmp (in_plugin->name, "u8", 2)) ||
(!strncmp (in_plugin->name, "s8", 2)) ||
(!strncmp (in_plugin->name, "u32", 3)) ||
(!strncmp (in_plugin->name, "s32", 3)) ||
(!strncmp (in_plugin->name, "f32", 3)) ||
(!strncmp (in_plugin->name, "f64", 3)) ||
(!strncmp (in_plugin->name, "raw", 3)) ||
(!strncmp (in_plugin->name, "crc", 3)) ||
(!strncmp (in_plugin->name, "null", 4)) ||
(!strncmp (in_plugin->name, "gif", 3)) ||
(!strncmp (in_plugin->name, "frame", 5)) ||
(!strncmp (in_plugin->name, "image", 5)) ||
(!strncmp (in_plugin->name, "mulaw", 5)) ||
(!strncmp (in_plugin->name, "alaw", 4)) ||
(!strncmp (in_plugin->name, "h26", 3)) ||
(!strncmp (in_plugin->name, "rtp", 3)) ||
(!strncmp (in_plugin->name, "ass", 3)) ||
(!strncmp (in_plugin->name, "ffmetadata", 10)) ||
(!strncmp (in_plugin->name, "srt", 3))
) {
GST_LOG ("Ignoring muxer %s", in_plugin->name);
goto next;
}
if ((!strncmp (in_plugin->long_name, "raw ", 4))) {
GST_LOG ("Ignoring raw muxer %s", in_plugin->name);
goto next;
}
if (gst_ffmpegmux_get_replacement (in_plugin->name))
rank = GST_RANK_NONE;
/* FIXME : We need a fast way to know whether we have mappings for this
* muxer type. */
/* construct the type */
type_name = g_strdup_printf ("ffmux_%s", in_plugin->name);
p = type_name;
while (*p) {
if (*p == '.')
*p = '_';
p++;
}
type = g_type_from_name (type_name);
if (!type) {
/* create the type now */
type = g_type_register_static (GST_TYPE_ELEMENT, type_name, &typeinfo, 0);
g_type_set_qdata (type, GST_FFMUX_PARAMS_QDATA, (gpointer) in_plugin);
g_type_add_interface_static (type, GST_TYPE_TAG_SETTER, &tag_setter_info);
}
if (!gst_element_register (plugin, type_name, rank, type)) {
g_free (type_name);
return FALSE;
}
g_free (type_name);
next:
in_plugin = av_oformat_next (in_plugin);
}
GST_LOG ("Finished registering muxers");
return TRUE;
}