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Commit bf0d9523 authored by Mats Lindestam's avatar Mats Lindestam Committed by Tim-Philipp Müller
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h264parse: refactored handling of SPS/PPS when pushing frames 

https://bugzilla.gnome.org/show_bug.cgi?id=766803
parent 0c04e004
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Showing with 88 additions and 81 deletions
gst/videoparsers/gsth264parse.c
View file @ bf0d9523
......@@ -2199,6 +2199,92 @@ gst_h264_parse_prepare_key_unit (GstH264Parse * parse, GstEvent * event)
parse->push_codec = TRUE;
}
static gboolean
gst_h264_parse_handle_sps_pps_nals (GstH264Parse * h264parse,
GstBuffer * buffer, GstBaseParseFrame * frame)
{
GstBuffer *codec_nal;
gint i;
gboolean send_done = FALSE;
GstClockTime timestamp = GST_BUFFER_TIMESTAMP (buffer);
if (h264parse->align == GST_H264_PARSE_ALIGN_NAL) {
/* send separate config NAL buffers */
GST_DEBUG_OBJECT (h264parse, "- sending SPS/PPS");
for (i = 0; i < GST_H264_MAX_SPS_COUNT; i++) {
if ((codec_nal = h264parse->sps_nals[i])) {
GST_DEBUG_OBJECT (h264parse, "sending SPS nal");
gst_h264_parse_push_codec_buffer (h264parse, codec_nal, timestamp);
send_done = TRUE;
}
}
for (i = 0; i < GST_H264_MAX_PPS_COUNT; i++) {
if ((codec_nal = h264parse->pps_nals[i])) {
GST_DEBUG_OBJECT (h264parse, "sending PPS nal");
gst_h264_parse_push_codec_buffer (h264parse, codec_nal, timestamp);
send_done = TRUE;
}
}
} else {
/* insert config NALs into AU */
GstByteWriter bw;
GstBuffer *new_buf;
const gboolean bs = h264parse->format == GST_H264_PARSE_FORMAT_BYTE;
const gint nls = 4 - h264parse->nal_length_size;
gboolean ok;
gst_byte_writer_init_with_size (&bw, gst_buffer_get_size (buffer), FALSE);
ok = gst_byte_writer_put_buffer (&bw, buffer, 0, h264parse->idr_pos);
GST_DEBUG_OBJECT (h264parse, "- inserting SPS/PPS");
for (i = 0; i < GST_H264_MAX_SPS_COUNT; i++) {
if ((codec_nal = h264parse->sps_nals[i])) {
gsize nal_size = gst_buffer_get_size (codec_nal);
GST_DEBUG_OBJECT (h264parse, "inserting SPS nal");
if (bs) {
ok &= gst_byte_writer_put_uint32_be (&bw, 1);
} else {
ok &= gst_byte_writer_put_uint32_be (&bw, (nal_size << (nls * 8)));
ok &= gst_byte_writer_set_pos (&bw,
gst_byte_writer_get_pos (&bw) - nls);
}
ok &= gst_byte_writer_put_buffer (&bw, codec_nal, 0, nal_size);
send_done = TRUE;
}
}
for (i = 0; i < GST_H264_MAX_PPS_COUNT; i++) {
if ((codec_nal = h264parse->pps_nals[i])) {
gsize nal_size = gst_buffer_get_size (codec_nal);
GST_DEBUG_OBJECT (h264parse, "inserting PPS nal");
if (bs) {
ok &= gst_byte_writer_put_uint32_be (&bw, 1);
} else {
ok &= gst_byte_writer_put_uint32_be (&bw, (nal_size << (nls * 8)));
ok &= gst_byte_writer_set_pos (&bw,
gst_byte_writer_get_pos (&bw) - nls);
}
ok &= gst_byte_writer_put_buffer (&bw, codec_nal, 0, nal_size);
send_done = TRUE;
}
}
ok &= gst_byte_writer_put_buffer (&bw, buffer, h264parse->idr_pos, -1);
/* collect result and push */
new_buf = gst_byte_writer_reset_and_get_buffer (&bw);
gst_buffer_copy_into (new_buf, buffer, GST_BUFFER_COPY_METADATA, 0, -1);
/* should already be keyframe/IDR, but it may not have been,
* so mark it as such to avoid being discarded by picky decoder */
GST_BUFFER_FLAG_UNSET (new_buf, GST_BUFFER_FLAG_DELTA_UNIT);
gst_buffer_replace (&frame->out_buffer, new_buf);
gst_buffer_unref (new_buf);
/* some result checking seems to make some compilers happy */
if (G_UNLIKELY (!ok)) {
GST_ERROR_OBJECT (h264parse, "failed to insert SPS/PPS");
}
}
return send_done;
}
static GstFlowReturn
gst_h264_parse_pre_push_frame (GstBaseParse * parse, GstBaseParseFrame * frame)
{
......@@ -2274,93 +2360,14 @@ gst_h264_parse_pre_push_frame (GstBaseParse * parse, GstBaseParseFrame * frame)
if (GST_TIME_AS_SECONDS (diff) >= h264parse->interval ||
initial_frame || h264parse->push_codec) {
GstBuffer *codec_nal;
gint i;
GstClockTime new_ts;
/* avoid overwriting a perfectly fine timestamp */
new_ts = GST_CLOCK_TIME_IS_VALID (timestamp) ? timestamp :
h264parse->last_report;
if (h264parse->align == GST_H264_PARSE_ALIGN_NAL) {
/* send separate config NAL buffers */
GST_DEBUG_OBJECT (h264parse, "- sending SPS/PPS");
for (i = 0; i < GST_H264_MAX_SPS_COUNT; i++) {
if ((codec_nal = h264parse->sps_nals[i])) {
GST_DEBUG_OBJECT (h264parse, "sending SPS nal");
gst_h264_parse_push_codec_buffer (h264parse, codec_nal,
timestamp);
h264parse->last_report = new_ts;
}
}
for (i = 0; i < GST_H264_MAX_PPS_COUNT; i++) {
if ((codec_nal = h264parse->pps_nals[i])) {
GST_DEBUG_OBJECT (h264parse, "sending PPS nal");
gst_h264_parse_push_codec_buffer (h264parse, codec_nal,
timestamp);
h264parse->last_report = new_ts;
}
}
} else {
/* insert config NALs into AU */
GstByteWriter bw;
GstBuffer *new_buf;
const gboolean bs = h264parse->format == GST_H264_PARSE_FORMAT_BYTE;
const gint nls = 4 - h264parse->nal_length_size;
gboolean ok;
gst_byte_writer_init_with_size (&bw, gst_buffer_get_size (buffer),
FALSE);
ok = gst_byte_writer_put_buffer (&bw, buffer, 0, h264parse->idr_pos);
GST_DEBUG_OBJECT (h264parse, "- inserting SPS/PPS");
for (i = 0; i < GST_H264_MAX_SPS_COUNT; i++) {
if ((codec_nal = h264parse->sps_nals[i])) {
gsize nal_size = gst_buffer_get_size (codec_nal);
GST_DEBUG_OBJECT (h264parse, "inserting SPS nal");
if (bs) {
ok &= gst_byte_writer_put_uint32_be (&bw, 1);
} else {
ok &= gst_byte_writer_put_uint32_be (&bw,
(nal_size << (nls * 8)));
ok &= gst_byte_writer_set_pos (&bw,
gst_byte_writer_get_pos (&bw) - nls);
}
ok &= gst_byte_writer_put_buffer (&bw, codec_nal, 0, nal_size);
h264parse->last_report = new_ts;
}
}
for (i = 0; i < GST_H264_MAX_PPS_COUNT; i++) {
if ((codec_nal = h264parse->pps_nals[i])) {
gsize nal_size = gst_buffer_get_size (codec_nal);
GST_DEBUG_OBJECT (h264parse, "inserting PPS nal");
if (bs) {
ok &= gst_byte_writer_put_uint32_be (&bw, 1);
} else {
ok &= gst_byte_writer_put_uint32_be (&bw,
(nal_size << (nls * 8)));
ok &= gst_byte_writer_set_pos (&bw,
gst_byte_writer_get_pos (&bw) - nls);
}
ok &= gst_byte_writer_put_buffer (&bw, codec_nal, 0, nal_size);
h264parse->last_report = new_ts;
}
}
ok &=
gst_byte_writer_put_buffer (&bw, buffer, h264parse->idr_pos, -1);
/* collect result and push */
new_buf = gst_byte_writer_reset_and_get_buffer (&bw);
gst_buffer_copy_into (new_buf, buffer, GST_BUFFER_COPY_METADATA, 0,
-1);
/* should already be keyframe/IDR, but it may not have been,
* so mark it as such to avoid being discarded by picky decoder */
GST_BUFFER_FLAG_UNSET (new_buf, GST_BUFFER_FLAG_DELTA_UNIT);
gst_buffer_replace (&frame->out_buffer, new_buf);
gst_buffer_unref (new_buf);
/* some result checking seems to make some compilers happy */
if (G_UNLIKELY (!ok)) {
GST_ERROR_OBJECT (h264parse, "failed to insert SPS/PPS");
}
if (gst_h264_parse_handle_sps_pps_nals (h264parse, buffer, frame)) {
h264parse->last_report = new_ts;
}
}
/* we pushed whatever we had */
......
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