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gst/dvdlpcmdec/gstdvdlpcmdec.c: Cleanups, fixed header parsing and stripping.
Original commit message from CVS: * gst/dvdlpcmdec/gstdvdlpcmdec.c: (gst_dvdlpcmdec_setcaps), (gst_dvdlpcmdec_chain_dvd), (gst_dvdlpcmdec_chain_raw), (gst_dvdlpcmdec_change_state): Cleanups, fixed header parsing and stripping.
This commit is contained in:
Wim Taymans
parent
d4eba730ac
commit
79e6e75405
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@ -1,3 +1,10 @@
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2005-09-01 Wim Taymans <wim@fluendo.com>
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* gst/dvdlpcmdec/gstdvdlpcmdec.c: (gst_dvdlpcmdec_setcaps),
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(gst_dvdlpcmdec_chain_dvd), (gst_dvdlpcmdec_chain_raw),
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(gst_dvdlpcmdec_change_state):
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Cleanups, fixed header parsing and stripping.
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2005-09-01 Michael Smith <msmith@fluendo.com>
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* gst/dvdlpcmdec/gstdvdlpcmdec.c: (gst_dvdlpcm_reset),
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@ -193,7 +193,7 @@ gst_dvdlpcmdec_setcaps (GstPad * pad, GstCaps * caps)
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/* If we have the DVD structured LPCM (including header) */
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if (gst_structure_has_name (structure, "audio/x-private1-lpcm")) {
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gst_pad_set_chain_function (dvdlpcmdec->sinkpad, gst_dvdlpcmdec_chain_dvd);
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return TRUE;
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goto done;
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}
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gst_pad_set_chain_function (dvdlpcmdec->sinkpad, gst_dvdlpcmdec_chain_raw);
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@ -207,10 +207,9 @@ gst_dvdlpcmdec_setcaps (GstPad * pad, GstCaps * caps)
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&dvdlpcmdec->emphasis);
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res &= gst_structure_get_boolean (structure, "mute", &dvdlpcmdec->mute);
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if (!res) {
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GST_DEBUG_OBJECT (dvdlpcmdec, "Couldn't get parameters; missing caps?");
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return GST_PAD_LINK_REFUSED;
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}
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if (!res)
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goto caps_parse_error;
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/* Output width is the input width rounded up to the nearest byte */
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if (dvdlpcmdec->width == 20)
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dvdlpcmdec->out_width = 24;
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@ -240,10 +239,18 @@ gst_dvdlpcmdec_setcaps (GstPad * pad, GstCaps * caps)
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gst_caps_unref (src_caps);
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if (!res)
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return FALSE;
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done:
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gst_object_unref (dvdlpcmdec);
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return TRUE;
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return res;
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/* ERRORS */
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caps_parse_error:
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{
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GST_DEBUG_OBJECT (dvdlpcmdec, "Couldn't get parameters; missing caps?");
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res = FALSE;
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goto done;
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}
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}
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static void
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@ -302,12 +309,13 @@ static GstFlowReturn
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gst_dvdlpcmdec_chain_dvd (GstPad * pad, GstBuffer * buf)
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{
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GstDvdLpcmDec *dvdlpcmdec;
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guchar *data;
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gint64 size;
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g_return_val_if_fail (pad != NULL, GST_FLOW_ERROR);
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g_return_val_if_fail (GST_IS_PAD (pad), GST_FLOW_ERROR);
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g_return_val_if_fail (buf != NULL, GST_FLOW_ERROR);
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guint8 *data;
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guint size;
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guint first_access;
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guint32 header;
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GstBuffer *subbuf;
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GstFlowReturn ret;
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gint off, len;
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dvdlpcmdec = GST_DVDLPCMDEC (gst_pad_get_parent (pad));
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@ -321,12 +329,10 @@ gst_dvdlpcmdec_chain_dvd (GstPad * pad, GstBuffer * buf)
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* The other three bytes are a (big endian) number in which the header is
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* encoded.
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*/
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gint first_access = (data[0] << 8) | data[1];
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guint32 header = (data[2] << 16) | (data[3] << 8) | data[4];
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GstBuffer *subbuf;
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GstFlowReturn ret;
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int off, len;
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first_access = (data[0] << 8) | data[1];
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header = (data[2] << 16) | (data[3] << 8) | data[4];
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/* see if we have a new header */
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if (header != dvdlpcmdec->header) {
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GstCaps *src_caps;
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@ -344,38 +350,59 @@ gst_dvdlpcmdec_chain_dvd (GstPad * pad, GstBuffer * buf)
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GST_DEBUG_OBJECT (dvdlpcmdec, "Set rate %d, channels %d, width %d",
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dvdlpcmdec->rate, dvdlpcmdec->channels, dvdlpcmdec->width);
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if (!gst_pad_set_caps (dvdlpcmdec->srcpad, src_caps)) {
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GST_DEBUG_OBJECT (dvdlpcmdec, "Failed to set caps!");
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GST_DEBUG_OBJECT (dvdlpcmdec, "Couldn't negotiate caps on src pad");
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return GST_FLOW_ERROR;
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}
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if (!gst_pad_set_caps (dvdlpcmdec->srcpad, src_caps))
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goto negotiation_failed;
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gst_caps_unref (src_caps);
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dvdlpcmdec->header = header;
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}
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GST_LOG_OBJECT (dvdlpcmdec, "Creating sub-buffers for first_access %d",
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first_access);
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GST_LOG_OBJECT (dvdlpcmdec, "first_access %d", first_access);
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/* skip access unit bytes and info */
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off = 5;
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len = first_access - 1;
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/* length before access unit */
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len = first_access + 1;
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if (len > 0) {
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GST_LOG_OBJECT (dvdlpcmdec, "Creating first sub-buffer off %d, len %d", off,
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len);
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/* see if we need a subbuffer without timestamp */
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if (len > off) {
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subbuf = gst_buffer_create_sub (buf, off, len);
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GST_BUFFER_TIMESTAMP (subbuf) = GST_CLOCK_TIME_NONE;
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ret = gst_dvdlpcmdec_chain_raw (pad, subbuf);
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if (ret != GST_FLOW_OK)
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return ret;
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goto done;
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}
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off += len;
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/* then the buffer with new timestamp */
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off = len;
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len = size - len;
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GST_LOG_OBJECT (dvdlpcmdec, "Creating next sub-buffer off %d, len %d", off,
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len);
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subbuf = gst_buffer_create_sub (buf, off, len);
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GST_BUFFER_TIMESTAMP (subbuf) = GST_BUFFER_TIMESTAMP (buf);
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return gst_dvdlpcmdec_chain_raw (pad, subbuf);
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ret = gst_dvdlpcmdec_chain_raw (pad, subbuf);
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done:
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gst_buffer_unref (buf);
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gst_object_unref (dvdlpcmdec);
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return ret;
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/* ERRORS */
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negotiation_failed:
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{
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GST_DEBUG_OBJECT (dvdlpcmdec, "Failed to set caps!");
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GST_DEBUG_OBJECT (dvdlpcmdec, "Couldn't negotiate caps on src pad");
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ret = GST_FLOW_ERROR;
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goto done;
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}
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}
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static GstFlowReturn
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@ -383,32 +410,22 @@ gst_dvdlpcmdec_chain_raw (GstPad * pad, GstBuffer * buf)
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{
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GstDvdLpcmDec *dvdlpcmdec;
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guchar *data;
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gint64 size;
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g_return_val_if_fail (pad != NULL, GST_FLOW_ERROR);
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g_return_val_if_fail (GST_IS_PAD (pad), GST_FLOW_ERROR);
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g_return_val_if_fail (buf != NULL, GST_FLOW_ERROR);
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guint size;
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GstFlowReturn ret;
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guint samples = 0;
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dvdlpcmdec = GST_DVDLPCMDEC (gst_pad_get_parent (pad));
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size = GST_BUFFER_SIZE (buf);
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data = GST_BUFFER_DATA (buf);
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GST_LOG_OBJECT (dvdlpcmdec, "got buffer %p of size %" G_GINT64_FORMAT, buf,
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size);
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GST_LOG_OBJECT (dvdlpcmdec, "got buffer %p of size %d", buf, size);
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if (dvdlpcmdec->rate == 0) {
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GST_ELEMENT_ERROR (dvdlpcmdec, STREAM, FORMAT, (NULL),
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("Buffer pushed before negotiation"));
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gst_buffer_unref (buf);
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return GST_FLOW_ERROR;
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}
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if (dvdlpcmdec->rate == 0)
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goto not_negotiated;
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if (!GST_PAD_IS_USABLE (dvdlpcmdec->srcpad)) {
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GST_DEBUG_OBJECT (dvdlpcmdec, "Discarding buffer on disabled pad");
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gst_buffer_unref (buf);
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return GST_FLOW_ERROR;
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}
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if (!GST_PAD_IS_USABLE (dvdlpcmdec->srcpad))
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goto disabled;
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/* We don't currently do anything at all regarding emphasis, mute or
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* dynamic_range - I'm not sure what they're for */
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@ -417,18 +434,9 @@ gst_dvdlpcmdec_chain_raw (GstPad * pad, GstBuffer * buf)
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{
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/* We can just pass 16-bits straight through intact, once we set
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* appropriate things on the buffer */
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int samples;
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samples = size / dvdlpcmdec->channels / 2;
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buf = gst_buffer_make_writable (buf);
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/* Set appropriate caps on it to pass downstream */
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gst_buffer_set_caps (buf, GST_PAD_CAPS (dvdlpcmdec->srcpad));
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update_timestamps (dvdlpcmdec, buf, samples);
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return gst_pad_push (dvdlpcmdec->srcpad, buf);
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break;
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}
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case 20:
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{
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@ -439,20 +447,18 @@ gst_dvdlpcmdec_chain_raw (GstPad * pad, GstBuffer * buf)
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guchar *src;
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guchar *dest;
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GstBuffer *outbuf;
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GstFlowReturn newbufret;
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GstCaps *bufcaps = GST_PAD_CAPS (dvdlpcmdec->srcpad);
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newbufret = gst_pad_alloc_buffer (dvdlpcmdec->srcpad, 0,
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ret = gst_pad_alloc_buffer (dvdlpcmdec->srcpad, 0,
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samples * 3, bufcaps, &outbuf);
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if (newbufret != GST_FLOW_OK) {
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GST_ELEMENT_ERROR (dvdlpcmdec, RESOURCE, FAILED, (NULL),
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("Buffer allocation failed"));
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gst_buffer_unref (buf);
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return GST_FLOW_ERROR;
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}
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if (ret != GST_FLOW_OK)
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goto buffer_alloc_failed;
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gst_buffer_stamp (outbuf, buf);
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update_timestamps (dvdlpcmdec, buf, samples / dvdlpcmdec->channels);
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/* adjust samples so we can calc the new timestamp */
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samples = samples / dvdlpcmdec->channels;
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src = data;
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dest = GST_BUFFER_DATA (outbuf);
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@ -478,26 +484,23 @@ gst_dvdlpcmdec_chain_raw (GstPad * pad, GstBuffer * buf)
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}
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gst_buffer_unref (buf);
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return gst_pad_push (dvdlpcmdec->srcpad, outbuf);
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buf = outbuf;
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break;
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}
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case 24:
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{
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/* Rearrange 24-bit LPCM format in-place. Note that the first 2
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* and last byte are already correct */
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gint64 count = size / 12;
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gint64 i;
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guchar *src;
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int samples = size / dvdlpcmdec->channels / 3;
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guint count = size / 12;
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gint i;
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guint8 *src;
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samples = size / dvdlpcmdec->channels / 3;
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/* Ensure our output buffer is writable */
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buf = gst_buffer_make_writable (buf);
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/* And set appropriate caps on it */
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gst_buffer_set_caps (buf, GST_PAD_CAPS (dvdlpcmdec->srcpad));
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update_timestamps (dvdlpcmdec, buf, samples);
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src = data;
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src = GST_BUFFER_DATA (buf);
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for (i = 0; i < count; i++) {
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guchar temp[9];
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@ -514,35 +517,78 @@ gst_dvdlpcmdec_chain_raw (GstPad * pad, GstBuffer * buf)
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memcpy (src + 2, temp, 9);
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src += 12;
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}
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return gst_pad_push (dvdlpcmdec->srcpad, buf);
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break;
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}
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default:
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GST_ELEMENT_ERROR (dvdlpcmdec, STREAM, WRONG_TYPE, (NULL),
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("Invalid sample width configured: %d", dvdlpcmdec->width));
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gst_buffer_unref (buf);
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return GST_FLOW_ERROR;
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goto invalid_width;
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}
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/* Set appropriate caps on it to pass downstream */
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gst_buffer_set_caps (buf, GST_PAD_CAPS (dvdlpcmdec->srcpad));
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update_timestamps (dvdlpcmdec, buf, samples);
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ret = gst_pad_push (dvdlpcmdec->srcpad, buf);
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done:
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gst_object_unref (dvdlpcmdec);
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return ret;
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/* ERRORS */
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not_negotiated:
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{
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GST_ELEMENT_ERROR (dvdlpcmdec, STREAM, FORMAT, (NULL),
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("Buffer pushed before negotiation"));
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gst_buffer_unref (buf);
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ret = GST_FLOW_NOT_NEGOTIATED;
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goto done;
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}
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disabled:
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{
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GST_DEBUG_OBJECT (dvdlpcmdec, "Discarding buffer on disabled pad");
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gst_buffer_unref (buf);
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ret = GST_FLOW_NOT_LINKED;
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goto done;
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}
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buffer_alloc_failed:
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{
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GST_ELEMENT_ERROR (dvdlpcmdec, RESOURCE, FAILED, (NULL),
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("Buffer allocation failed"));
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gst_buffer_unref (buf);
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goto done;
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}
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invalid_width:
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{
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GST_ELEMENT_ERROR (dvdlpcmdec, STREAM, WRONG_TYPE, (NULL),
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("Invalid sample width configured"));
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gst_buffer_unref (buf);
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ret = GST_FLOW_NOT_NEGOTIATED;
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goto done;
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}
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}
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static GstElementStateReturn
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gst_dvdlpcmdec_change_state (GstElement * element)
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{
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GstDvdLpcmDec *dvdlpcmdec = GST_DVDLPCMDEC (element);
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GstElementStateReturn res;
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switch (GST_STATE_TRANSITION (element)) {
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case GST_STATE_PAUSED_TO_READY:
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case GST_STATE_READY_TO_PAUSED:
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gst_dvdlpcm_reset (dvdlpcmdec);
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break;
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default:
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break;
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}
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if (parent_class->change_state)
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return parent_class->change_state (element);
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res = parent_class->change_state (element);
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return GST_STATE_SUCCESS;
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switch (GST_STATE_TRANSITION (element)) {
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default:
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break;
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}
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return res;
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}
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static gboolean
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