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hlsdemux: add floating point segment duration support

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This commit is contained in:
Gil Pedersen 2012-02-28 16:40:31 +01:00 committed by Wim Taymans
parent 1188120eba
commit fd92f8d6a2
3 changed files with 51 additions and 21 deletions
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10
gst/hls/gsthlsdemux.c
View file

@ -341,9 +341,8 @@ gst_hls_demux_src_event (GstPad * pad, GstEvent * event)
GstSeekType start_type, stop_type;
gint64 start, stop;
GList *walk;
gint current_pos;
GstClockTime current_pos, target_pos;
gint current_sequence;
gint target_second;
GstM3U8MediaFile *file;
GST_INFO_OBJECT (demux, "Received GST_EVENT_SEEK");
@ -367,14 +366,13 @@ gst_hls_demux_src_event (GstPad * pad, GstEvent * event)
file = GST_M3U8_MEDIA_FILE (demux->client->current->files->data);
current_sequence = file->sequence;
current_pos = 0;
target_second = start / GST_SECOND;
GST_DEBUG_OBJECT (demux, "Target seek to %d", target_second);
target_pos = (GstClockTime) start;
for (walk = demux->client->current->files; walk; walk = walk->next) {
file = walk->data;
current_sequence = file->sequence;
if (current_pos <= target_second
&& target_second < current_pos + file->duration) {
if (current_pos <= target_pos
&& target_pos < current_pos + file->duration) {
break;
}
current_pos += file->duration;

58
gst/hls/m3u8.c
View file

@ -20,6 +20,7 @@
*/
#include <stdlib.h>
#include <math.h>
#include <errno.h>
#include <glib.h>
@ -34,7 +35,7 @@ static void gst_m3u8_free (GstM3U8 * m3u8);
static gboolean gst_m3u8_update (GstM3U8 * m3u8, gchar * data,
gboolean * updated);
static GstM3U8MediaFile *gst_m3u8_media_file_new (gchar * uri,
gchar * title, gint duration, guint sequence);
gchar * title, GstClockTime duration, guint sequence);
static void gst_m3u8_media_file_free (GstM3U8MediaFile * self);
static GstM3U8 *
@ -77,7 +78,7 @@ gst_m3u8_free (GstM3U8 * self)
}
static GstM3U8MediaFile *
gst_m3u8_media_file_new (gchar * uri, gchar * title, gint duration,
gst_m3u8_media_file_new (gchar * uri, gchar * title, GstClockTime duration,
guint sequence)
{
GstM3U8MediaFile *file;
@ -131,6 +132,36 @@ int_from_string (gchar * ptr, gchar ** endptr, gint * val)
return end != ptr;
}
static gboolean
double_from_string (gchar * ptr, gchar ** endptr, gdouble * val)
{
gchar *end;
gdouble ret;
g_return_val_if_fail (ptr != NULL, FALSE);
g_return_val_if_fail (val != NULL, FALSE);
errno = 0;
ret = strtod (ptr, &end);
if ((errno == ERANGE && (ret == HUGE_VAL || ret == -HUGE_VAL))
|| (errno != 0 && ret == 0)) {
GST_WARNING ("%s", g_strerror (errno));
return FALSE;
}
if (!isfinite (ret)) {
GST_WARNING ("%s", g_strerror (ERANGE));
return FALSE;
}
if (endptr)
*endptr = end;
*val = (gint) ret;
return end != ptr;
}
static gboolean
parse_attributes (gchar ** ptr, gchar ** a, gchar ** v)
{
@ -186,7 +217,8 @@ gst_m3u8_compare_playlist_by_bitrate (gconstpointer a, gconstpointer b)
static gboolean
gst_m3u8_update (GstM3U8 * self, gchar * data, gboolean * updated)
{
gint val, duration;
gint val;
GstClockTime duration;
gchar *title, *end;
// gboolean discontinuity;
GstM3U8 *list;
@ -222,7 +254,7 @@ gst_m3u8_update (GstM3U8 * self, gchar * data, gboolean * updated)
}
list = NULL;
duration = -1;
duration = 0;
title = NULL;
data += 7;
while (TRUE) {
@ -233,7 +265,7 @@ gst_m3u8_update (GstM3U8 * self, gchar * data, gboolean * updated)
if (data[0] != '#') {
gchar *r;
if (duration < 0 && list == NULL) {
if (duration <= 0 && list == NULL) {
GST_LOG ("%s: got line without EXTINF or EXTSTREAMINF, dropping", data);
goto next_line;
}
@ -277,7 +309,7 @@ gst_m3u8_update (GstM3U8 * self, gchar * data, gboolean * updated)
file =
gst_m3u8_media_file_new (data, title, duration,
self->mediasequence++);
duration = -1;
duration = 0;
title = NULL;
self->files = g_list_append (self->files, file);
}
@ -321,7 +353,7 @@ gst_m3u8_update (GstM3U8 * self, gchar * data, gboolean * updated)
}
} else if (g_str_has_prefix (data, "#EXT-X-TARGETDURATION:")) {
if (int_from_string (data + 22, &data, &val))
self->targetduration = val;
self->targetduration = val * GST_SECOND;
} else if (g_str_has_prefix (data, "#EXT-X-MEDIA-SEQUENCE:")) {
if (int_from_string (data + 22, &data, &val))
self->mediasequence = val;
@ -334,11 +366,12 @@ gst_m3u8_update (GstM3U8 * self, gchar * data, gboolean * updated)
g_free (self->allowcache);
self->allowcache = g_strdup (data + 19);
} else if (g_str_has_prefix (data, "#EXTINF:")) {
if (!int_from_string (data + 8, &data, &val)) {
gdouble fval;
if (!double_from_string (data + 8, &data, &fval)) {
GST_WARNING ("Can't read EXTINF duration");
goto next_line;
}
duration = val;
duration = fval * (gdouble) GST_SECOND;
if (duration > self->targetduration)
GST_WARNING ("EXTINF duration > TARGETDURATION");
if (!data || *data != ',')
@ -485,7 +518,6 @@ gst_m3u8_client_get_current_position (GstM3U8Client * client,
break;
*timestamp += GST_M3U8_MEDIA_FILE (walk->data)->duration;
}
*timestamp *= GST_SECOND;
}
gboolean
@ -517,7 +549,7 @@ gst_m3u8_client_get_next_fragment (GstM3U8Client * client,
client->sequence = file->sequence + 1;
*uri = file->uri;
*duration = file->duration * GST_SECOND;
*duration = file->duration;
GST_M3U8_CLIENT_UNLOCK (client);
return TRUE;
@ -545,7 +577,7 @@ gst_m3u8_client_get_duration (GstM3U8Client * client)
g_list_foreach (client->current->files, (GFunc) _sum_duration, &duration);
GST_M3U8_CLIENT_UNLOCK (client);
return duration * GST_SECOND;
return duration;
}
GstClockTime
@ -558,7 +590,7 @@ gst_m3u8_client_get_target_duration (GstM3U8Client * client)
GST_M3U8_CLIENT_LOCK (client);
duration = client->current->targetduration;
GST_M3U8_CLIENT_UNLOCK (client);
return duration * GST_SECOND;
return duration;
}
const gchar *

4
gst/hls/m3u8.h
View file

@ -41,7 +41,7 @@ struct _GstM3U8
gboolean endlist; /* if ENDLIST has been reached */
gint version; /* last EXT-X-VERSION */
gint targetduration; /* last EXT-X-TARGETDURATION */
GstClockTime targetduration; /* last EXT-X-TARGETDURATION */
gchar *allowcache; /* last EXT-X-ALLOWCACHE */
gint bandwidth;
@ -62,7 +62,7 @@ struct _GstM3U8
struct _GstM3U8MediaFile
{
gchar *title;
gint duration;
GstClockTime duration;
gchar *uri;
guint sequence; /* the sequence nb of this file */
};