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rtpsv3vdepay: Properly fill codec_data and cleanup code a bite more.
This commit is contained in:
Edward Hervey
parent
65a2871e90
commit
e2b3665ae6
1 changed files with 110 additions and 95 deletions
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@ -139,128 +139,143 @@ static GstBuffer *
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gst_rtp_sv3v_depay_process (GstBaseRTPDepayload * depayload, GstBuffer * buf)
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{
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GstRtpSV3VDepay *rtpsv3vdepay;
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GstBuffer *outbuf;
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static struct
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{
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guint width, height;
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} resolutions[7] = {
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{
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160, 128}, {
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128, 96}, {
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176, 144}, {
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352, 288}, {
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704, 576}, {
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240, 180}, {
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320, 240}
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};
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gint payload_len;
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guint8 *payload;
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gboolean M;
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gboolean C, S, E;
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GstBuffer *outbuf = NULL;
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guint16 seq;
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rtpsv3vdepay = GST_RTP_SV3V_DEPAY (depayload);
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/* flush on sequence number gaps */
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seq = gst_rtp_buffer_get_seq (buf);
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GST_DEBUG ("timestamp %" GST_TIME_FORMAT ", sequence number:%d",
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GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)), seq);
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if (seq != rtpsv3vdepay->nextseq) {
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GST_DEBUG ("Sequence discontinuity, clearing adapter");
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gst_adapter_clear (rtpsv3vdepay->adapter);
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}
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rtpsv3vdepay->nextseq = seq + 1;
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{
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static struct
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{
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guint width, height;
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} resolutions[7] = {
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{
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160, 128}, {
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128, 96}, {
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176, 144}, {
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352, 288}, {
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704, 576}, {
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240, 180}, {
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320, 240}
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};
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gint payload_len;
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guint8 *payload;
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gboolean M;
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gboolean C, S, E;
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payload_len = gst_rtp_buffer_get_payload_len (buf);
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if (payload_len < 3)
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goto bad_packet;
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payload_len = gst_rtp_buffer_get_payload_len (buf);
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if (payload_len < 3)
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goto bad_packet;
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payload = gst_rtp_buffer_get_payload (buf);
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payload = gst_rtp_buffer_get_payload (buf);
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M = gst_rtp_buffer_get_marker (buf);
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M = gst_rtp_buffer_get_marker (buf);
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/* This is all a guess:
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* 1 1 1 1 1 1
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* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* |0|C|S|E|0|0|0|0|0|0|0|0|0|0|0|0|
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*
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* C: config, packet contains config info
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* S: start, packet contains start of frame
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* E: end, packet contains end of frame
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*/
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/* this seems to indicate a packet with a config string sent before each
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* keyframe */
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C = (payload[0] & 0x40) == 0x40;
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/* This is all a guess:
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* 1 1 1 1 1 1
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* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* |0|C|S|E|0|0|0|0|0|0|0|0|0|0|0|0|
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*
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* C: config, packet contains config info
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* S: start, packet contains start of frame
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* E: end, packet contains end of frame
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*/
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/* this seems to indicate a packet with a config string sent before each
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* keyframe */
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C = (payload[0] & 0x40) == 0x40;
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/* redundant with the RTP marker bit */
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S = (payload[0] & 0x20) == 0x20;
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E = (payload[0] & 0x10) == 0x10;
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/* redundant with the RTP marker bit */
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S = (payload[0] & 0x20) == 0x20;
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E = (payload[0] & 0x10) == 0x10;
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GST_DEBUG ("M:%d, C:%d, S:%d, E:%d", M, C, S, E);
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GST_DEBUG ("M:%d, C:%d, S:%d, E:%d", M, C, S, E);
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GST_MEMDUMP ("incoming buffer", payload, payload_len);
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GST_MEMDUMP ("incoming buffer", payload, payload_len);
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if (G_UNLIKELY (C)) {
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GstCaps *caps;
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GstBuffer *codec_data;
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guint8 res;
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if (C) {
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GstCaps *caps;
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GstBuffer *codec_data;
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GValue value = { 0 };
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guint8 res;
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GST_DEBUG ("Configuration packet");
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/* if we already have caps, we don't need to do anything. FIXME, check if
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* something changed. */
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if (GST_PAD_CAPS (GST_BASE_RTP_DEPAYLOAD_SRCPAD (depayload)))
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return NULL;
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res = payload[2] >> 5;
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/* width and height, according to http://wiki.multimedia.cx/index.php?title=Sorenson_Video_1#Stream_Format_And_Header */
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if (res < 7) {
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rtpsv3vdepay->width = resolutions[res].width;
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rtpsv3vdepay->height = resolutions[res].height;
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} else {
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/* extended width/height, they're contained in the following 24bit */
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rtpsv3vdepay->width = ((payload[2] & 0x1f) << 7) | (payload[3] >> 1);
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rtpsv3vdepay->height =
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(payload[3] & 0x1) << 11 | payload[4] << 3 | (payload[5] >> 5);
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}
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/* we need a dummy empty codec data */
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g_value_init (&value, GST_TYPE_BUFFER);
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gst_value_deserialize (&value, "");
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codec_data = gst_value_get_buffer (&value);
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caps = gst_caps_new_simple ("video/x-svq",
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"svqversion", G_TYPE_INT, 3,
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"width", G_TYPE_INT, rtpsv3vdepay->width,
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"height", G_TYPE_INT, rtpsv3vdepay->height,
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"codec_data", GST_TYPE_BUFFER, codec_data, NULL);
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gst_pad_set_caps (GST_BASE_RTP_DEPAYLOAD_SRCPAD (depayload), caps);
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gst_caps_unref (caps);
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g_value_unset (&value);
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rtpsv3vdepay->configured = TRUE;
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return NULL;
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/* if we already have caps, we don't need to do anything. FIXME, check if
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* something changed. */
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if (G_UNLIKELY (GST_PAD_CAPS (GST_BASE_RTP_DEPAYLOAD_SRCPAD (depayload)))) {
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GST_DEBUG ("Already configured, skipping config parsing");
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goto beach;
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}
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if (G_LIKELY (rtpsv3vdepay->configured)) {
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/* store data in adapter, stip off 2 bytes header */
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outbuf = gst_rtp_buffer_get_payload_subbuffer (buf, 2, -1);
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gst_adapter_push (rtpsv3vdepay->adapter, outbuf);
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res = payload[2] >> 5;
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if (M) {
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/* frame is completed: push contents of adapter */
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guint avail;
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/* width and height, according to http://wiki.multimedia.cx/index.php?title=Sorenson_Video_1#Stream_Format_And_Header */
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if (G_LIKELY (res < 7)) {
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rtpsv3vdepay->width = resolutions[res].width;
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rtpsv3vdepay->height = resolutions[res].height;
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} else {
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/* extended width/height, they're contained in the following 24bit */
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rtpsv3vdepay->width = ((payload[2] & 0x1f) << 7) | (payload[3] >> 1);
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rtpsv3vdepay->height =
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(payload[3] & 0x1) << 11 | payload[4] << 3 | (payload[5] >> 5);
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}
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avail = gst_adapter_available (rtpsv3vdepay->adapter);
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outbuf = gst_adapter_take_buffer (rtpsv3vdepay->adapter, avail);
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/* CodecData needs to be 'SEQH' + len (32bit) + data according to
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* ffmpeg's libavcodec/svq3.c:svq3_decode_init */
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codec_data = gst_buffer_new_and_alloc (payload_len + 6);
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memcpy (GST_BUFFER_DATA (codec_data), "SEQH", 4);
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GST_WRITE_UINT32_LE (GST_BUFFER_DATA (codec_data) + 4, payload_len - 2);
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memcpy (GST_BUFFER_DATA (codec_data) + 8, payload + 2, payload_len - 2);
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return outbuf;
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}
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GST_MEMDUMP ("codec_data", GST_BUFFER_DATA (codec_data),
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GST_BUFFER_SIZE (codec_data));
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caps = gst_caps_new_simple ("video/x-svq",
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"svqversion", G_TYPE_INT, 3,
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"width", G_TYPE_INT, rtpsv3vdepay->width,
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"height", G_TYPE_INT, rtpsv3vdepay->height,
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"codec_data", GST_TYPE_BUFFER, codec_data, NULL);
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gst_pad_set_caps (GST_BASE_RTP_DEPAYLOAD_SRCPAD (depayload), caps);
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gst_caps_unref (caps);
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GST_DEBUG ("Depayloader now configured");
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rtpsv3vdepay->configured = TRUE;
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goto beach;
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}
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if (G_LIKELY (rtpsv3vdepay->configured)) {
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GstBuffer *tmpbuf;
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GST_DEBUG ("Storing incoming payload");
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/* store data in adapter, stip off 2 bytes header */
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tmpbuf = gst_rtp_buffer_get_payload_subbuffer (buf, 2, -1);
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gst_adapter_push (rtpsv3vdepay->adapter, tmpbuf);
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if (G_UNLIKELY (M)) {
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/* frame is completed: push contents of adapter */
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guint avail;
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avail = gst_adapter_available (rtpsv3vdepay->adapter);
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GST_DEBUG ("Returning completed output buffer [%d bytes]", avail);
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outbuf = gst_adapter_take_buffer (rtpsv3vdepay->adapter, avail);
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}
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}
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return NULL;
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beach:
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return outbuf;
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/* ERRORS */
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bad_packet:
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