mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-12-19 06:46:38 +00:00
Code Issues 1 Projects Releases Wiki Activity

gst/flv/gstflvparse.c: Fix bit masks operations to be sure we detect the codec_tags and sample rates correctly.

Browse source 
Original commit message from CVS:
2007-09-26  Julien MOUTTE  <julien@moutte.net>

* gst/flv/gstflvparse.c: (gst_flv_parse_tag_audio),
(gst_flv_parse_tag_video): Fix bit masks operations to be
sure we detect the codec_tags and sample rates correctly.
Fix raw audio caps generation.
This commit is contained in:
Julien Moutte 2007-09-26 11:17:08 +00:00
parent 1af510f8d5
commit a37eba036b
2 changed files with 34 additions and 49 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
ChangeLog
View file

@ -1,3 +1,10 @@
2007-09-26 Julien MOUTTE <julien@moutte.net>
* gst/flv/gstflvparse.c: (gst_flv_parse_tag_audio),
(gst_flv_parse_tag_video): Fix bit masks operations to be
sure we detect the codec_tags and sample rates correctly.
Fix raw audio caps generation.
2007-09-24 Stefan Kost <ensonic@users.sf.net> 2007-09-24 Stefan Kost <ensonic@users.sf.net>
* ext/audioresample/gstaudioresample.c: * ext/audioresample/gstaudioresample.c:

76
gst/flv/gstflvparse.c
View file

@ -392,12 +392,15 @@ gst_flv_parse_tag_audio (GstFLVDemux * demux, const guint8 * data,
{ {
GstFlowReturn ret = GST_FLOW_OK; GstFlowReturn ret = GST_FLOW_OK;
GstBuffer *buffer = NULL; GstBuffer *buffer = NULL;
guint32 pts = 0, codec_tag = 0, rate = 0, width = 0, channels = 0; guint32 pts = 0, codec_tag = 0, rate = 5512, width = 8, channels = 1;
guint32 codec_data = 0, pts_ext = 0; guint32 codec_data = 0, pts_ext = 0;
guint8 flags = 0; guint8 flags = 0;
GST_LOG_OBJECT (demux, "parsing an audio tag"); GST_LOG_OBJECT (demux, "parsing an audio tag");
GST_LOG_OBJECT (demux, "pts bytes %02X %02X %02X %02X", data[0], data[1],
data[2], data[3]);
/* Grab information about audio tag */ /* Grab information about audio tag */
pts = FLV_GET_BEUI24 (data, data_size); pts = FLV_GET_BEUI24 (data, data_size);
/* read the pts extension to 32 bits integer */ /* read the pts extension to 32 bits integer */
@ -410,45 +413,26 @@ gst_flv_parse_tag_audio (GstFLVDemux * demux, const guint8 * data,
/* Channels */ /* Channels */
if (flags & 0x01) { if (flags & 0x01) {
channels = 2; channels = 2;
} else {
channels = 1;
} }
/* Width */ /* Width */
if (flags & 0x02) { if (flags & 0x02) {
width = 16; width = 16;
} else {
width = 8;
} }
/* Sampling rate */ /* Sampling rate */
if (flags & 0x0C) { if ((flags >> 2) == 3) {
rate = 44100; rate = 44100;
} else if (flags & 0x08) { } else if ((flags >> 2) == 2) {
rate = 22050; rate = 22050;
} else if (flags & 0x04) { } else if ((flags >> 2) == 1) {
rate = 11025; rate = 11025;
} else {
rate = 5512;
} }
/* Codec tag */ /* Codec tag */
if (flags & 0x10) { codec_tag = flags >> 4;
codec_tag = 1; codec_data = 1;
codec_data = 1;
} else if (flags & 0x20) {
codec_tag = 2;
codec_data = 1;
} else if (flags & 0x30) {
codec_tag = 3;
codec_data = 1;
} else if (flags & 0x40) {
codec_tag = 4;
codec_data = 1;
} else if (flags & 0x50) {
codec_tag = 5;
codec_data = 1;
}
GST_LOG_OBJECT (demux, "audio tag with %d channels, %dHz sampling rate, " GST_LOG_OBJECT (demux, "audio tag with %d channels, %dHz sampling rate, "
"%d bits width, codec tag %d", channels, rate, width, codec_tag); "%d bits width, codec tag %u (flags %02X)", channels, rate, width,
codec_tag, flags);
/* If we don't have our audio pad created, then create it. */ /* If we don't have our audio pad created, then create it. */
if (G_UNLIKELY (!demux->audio_pad)) { if (G_UNLIKELY (!demux->audio_pad)) {
@ -471,7 +455,9 @@ gst_flv_parse_tag_audio (GstFLVDemux * demux, const guint8 * data,
break; break;
case 0: case 0:
case 3: case 3:
caps = gst_caps_new_simple ("audio/x-raw-int", NULL); caps = gst_caps_new_simple ("audio/x-raw-int",
"endianness", G_TYPE_INT, G_BYTE_ORDER,
"signed", G_TYPE_BOOLEAN, TRUE, NULL);
break; break;
default: default:
GST_WARNING_OBJECT (demux, "unsupported audio codec tag %u", codec_tag); GST_WARNING_OBJECT (demux, "unsupported audio codec tag %u", codec_tag);
@ -487,7 +473,8 @@ gst_flv_parse_tag_audio (GstFLVDemux * demux, const guint8 * data,
gst_caps_set_simple (caps, gst_caps_set_simple (caps,
"rate", G_TYPE_INT, rate, "rate", G_TYPE_INT, rate,
"channels", G_TYPE_INT, channels, "width", G_TYPE_INT, width, NULL); "channels", G_TYPE_INT, channels,
"width", G_TYPE_INT, width, "depth", G_TYPE_INT, width, NULL);
gst_pad_set_caps (demux->audio_pad, caps); gst_pad_set_caps (demux->audio_pad, caps);
@ -647,12 +634,15 @@ gst_flv_parse_tag_video (GstFLVDemux * demux, const guint8 * data,
{ {
GstFlowReturn ret = GST_FLOW_OK; GstFlowReturn ret = GST_FLOW_OK;
GstBuffer *buffer = NULL; GstBuffer *buffer = NULL;
guint32 pts = 0, codec_tag = 0, codec_data = 0, pts_ext = 0; guint32 pts = 0, codec_data = 1, pts_ext = 0;
gboolean keyframe = FALSE; gboolean keyframe = FALSE;
guint8 flags = 0; guint8 flags = 0, codec_tag = 0;
GST_LOG_OBJECT (demux, "parsing a video tag"); GST_LOG_OBJECT (demux, "parsing a video tag");
GST_LOG_OBJECT (demux, "pts bytes %02X %02X %02X %02X", data[0], data[1],
data[2], data[3]);
/* Grab information about video tag */ /* Grab information about video tag */
pts = FLV_GET_BEUI24 (data, data_size); pts = FLV_GET_BEUI24 (data, data_size);
/* read the pts extension to 32 bits integer */ /* read the pts extension to 32 bits integer */
@ -663,28 +653,14 @@ gst_flv_parse_tag_video (GstFLVDemux * demux, const guint8 * data,
flags = GST_READ_UINT8 (data + 7); flags = GST_READ_UINT8 (data + 7);
/* Keyframe */ /* Keyframe */
if (flags & 0x10) { if ((flags >> 4) == 1) {
keyframe = TRUE; keyframe = TRUE;
} else if (flags & 0x20) {
keyframe = FALSE;
} }
/* Codec tag */ /* Codec tag */
if (flags & 0x02) { // H263 codec_tag = flags & 0x0F;
codec_tag = 2;
codec_data = 1;
} else if (flags & 0x03) { // Sorenson Spark
codec_tag = 3;
codec_data = 1;
} else if (flags & 0x04) { // VP6
codec_tag = 4;
codec_data = 2;
} else if (flags & 0x05) { // VP6 Alpha
codec_tag = 5;
codec_data = 2;
}
GST_LOG_OBJECT (demux, "video tag with codec tag %d, keyframe (%d)", GST_LOG_OBJECT (demux, "video tag with codec tag %u, keyframe (%d) "
codec_tag, keyframe); "(flags %02X)", codec_tag, keyframe, flags);
/* If we don't have our video pad created, then create it. */ /* If we don't have our video pad created, then create it. */
if (G_UNLIKELY (!demux->video_pad)) { if (G_UNLIKELY (!demux->video_pad)) {
@ -709,9 +685,11 @@ gst_flv_parse_tag_video (GstFLVDemux * demux, const guint8 * data,
break; break;
case 4: case 4:
caps = gst_caps_new_simple ("video/x-vp6-flash", NULL); caps = gst_caps_new_simple ("video/x-vp6-flash", NULL);
codec_data = 2;
break; break;
case 5: case 5:
caps = gst_caps_new_simple ("video/x-vp6-flash", NULL); caps = gst_caps_new_simple ("video/x-vp6-flash", NULL);
codec_data = 2;
break; break;
default: default:
GST_WARNING_OBJECT (demux, "unsupported video codec tag %d", codec_tag); GST_WARNING_OBJECT (demux, "unsupported video codec tag %d", codec_tag);