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h264parse: refactored handling of SPS/PPS when pushing frames
https://bugzilla.gnome.org/show_bug.cgi?id=766803
This commit is contained in:
Mats Lindestam
Tim-Philipp Müller
parent
0c04e004bb
commit
bf0d952387
1 changed files with 88 additions and 81 deletions
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@ -2199,6 +2199,92 @@ gst_h264_parse_prepare_key_unit (GstH264Parse * parse, GstEvent * event)
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parse->push_codec = TRUE;
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}
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static gboolean
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gst_h264_parse_handle_sps_pps_nals (GstH264Parse * h264parse,
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GstBuffer * buffer, GstBaseParseFrame * frame)
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{
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GstBuffer *codec_nal;
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gint i;
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gboolean send_done = FALSE;
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GstClockTime timestamp = GST_BUFFER_TIMESTAMP (buffer);
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if (h264parse->align == GST_H264_PARSE_ALIGN_NAL) {
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/* send separate config NAL buffers */
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GST_DEBUG_OBJECT (h264parse, "- sending SPS/PPS");
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for (i = 0; i < GST_H264_MAX_SPS_COUNT; i++) {
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if ((codec_nal = h264parse->sps_nals[i])) {
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GST_DEBUG_OBJECT (h264parse, "sending SPS nal");
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gst_h264_parse_push_codec_buffer (h264parse, codec_nal, timestamp);
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send_done = TRUE;
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}
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}
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for (i = 0; i < GST_H264_MAX_PPS_COUNT; i++) {
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if ((codec_nal = h264parse->pps_nals[i])) {
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GST_DEBUG_OBJECT (h264parse, "sending PPS nal");
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gst_h264_parse_push_codec_buffer (h264parse, codec_nal, timestamp);
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send_done = TRUE;
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}
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}
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} else {
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/* insert config NALs into AU */
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GstByteWriter bw;
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GstBuffer *new_buf;
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const gboolean bs = h264parse->format == GST_H264_PARSE_FORMAT_BYTE;
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const gint nls = 4 - h264parse->nal_length_size;
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gboolean ok;
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gst_byte_writer_init_with_size (&bw, gst_buffer_get_size (buffer), FALSE);
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ok = gst_byte_writer_put_buffer (&bw, buffer, 0, h264parse->idr_pos);
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GST_DEBUG_OBJECT (h264parse, "- inserting SPS/PPS");
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for (i = 0; i < GST_H264_MAX_SPS_COUNT; i++) {
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if ((codec_nal = h264parse->sps_nals[i])) {
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gsize nal_size = gst_buffer_get_size (codec_nal);
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GST_DEBUG_OBJECT (h264parse, "inserting SPS nal");
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if (bs) {
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ok &= gst_byte_writer_put_uint32_be (&bw, 1);
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} else {
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ok &= gst_byte_writer_put_uint32_be (&bw, (nal_size << (nls * 8)));
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ok &= gst_byte_writer_set_pos (&bw,
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gst_byte_writer_get_pos (&bw) - nls);
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}
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ok &= gst_byte_writer_put_buffer (&bw, codec_nal, 0, nal_size);
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send_done = TRUE;
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}
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}
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for (i = 0; i < GST_H264_MAX_PPS_COUNT; i++) {
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if ((codec_nal = h264parse->pps_nals[i])) {
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gsize nal_size = gst_buffer_get_size (codec_nal);
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GST_DEBUG_OBJECT (h264parse, "inserting PPS nal");
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if (bs) {
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ok &= gst_byte_writer_put_uint32_be (&bw, 1);
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} else {
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ok &= gst_byte_writer_put_uint32_be (&bw, (nal_size << (nls * 8)));
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ok &= gst_byte_writer_set_pos (&bw,
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gst_byte_writer_get_pos (&bw) - nls);
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}
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ok &= gst_byte_writer_put_buffer (&bw, codec_nal, 0, nal_size);
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send_done = TRUE;
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}
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}
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ok &= gst_byte_writer_put_buffer (&bw, buffer, h264parse->idr_pos, -1);
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/* collect result and push */
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new_buf = gst_byte_writer_reset_and_get_buffer (&bw);
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gst_buffer_copy_into (new_buf, buffer, GST_BUFFER_COPY_METADATA, 0, -1);
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/* should already be keyframe/IDR, but it may not have been,
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* so mark it as such to avoid being discarded by picky decoder */
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GST_BUFFER_FLAG_UNSET (new_buf, GST_BUFFER_FLAG_DELTA_UNIT);
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gst_buffer_replace (&frame->out_buffer, new_buf);
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gst_buffer_unref (new_buf);
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/* some result checking seems to make some compilers happy */
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if (G_UNLIKELY (!ok)) {
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GST_ERROR_OBJECT (h264parse, "failed to insert SPS/PPS");
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}
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}
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return send_done;
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}
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static GstFlowReturn
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gst_h264_parse_pre_push_frame (GstBaseParse * parse, GstBaseParseFrame * frame)
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{
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@ -2274,95 +2360,16 @@ gst_h264_parse_pre_push_frame (GstBaseParse * parse, GstBaseParseFrame * frame)
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if (GST_TIME_AS_SECONDS (diff) >= h264parse->interval ||
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initial_frame || h264parse->push_codec) {
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GstBuffer *codec_nal;
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gint i;
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GstClockTime new_ts;
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/* avoid overwriting a perfectly fine timestamp */
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new_ts = GST_CLOCK_TIME_IS_VALID (timestamp) ? timestamp :
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h264parse->last_report;
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if (h264parse->align == GST_H264_PARSE_ALIGN_NAL) {
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/* send separate config NAL buffers */
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GST_DEBUG_OBJECT (h264parse, "- sending SPS/PPS");
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for (i = 0; i < GST_H264_MAX_SPS_COUNT; i++) {
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if ((codec_nal = h264parse->sps_nals[i])) {
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GST_DEBUG_OBJECT (h264parse, "sending SPS nal");
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gst_h264_parse_push_codec_buffer (h264parse, codec_nal,
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timestamp);
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if (gst_h264_parse_handle_sps_pps_nals (h264parse, buffer, frame)) {
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h264parse->last_report = new_ts;
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}
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}
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for (i = 0; i < GST_H264_MAX_PPS_COUNT; i++) {
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if ((codec_nal = h264parse->pps_nals[i])) {
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GST_DEBUG_OBJECT (h264parse, "sending PPS nal");
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gst_h264_parse_push_codec_buffer (h264parse, codec_nal,
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timestamp);
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h264parse->last_report = new_ts;
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}
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}
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} else {
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/* insert config NALs into AU */
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GstByteWriter bw;
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GstBuffer *new_buf;
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const gboolean bs = h264parse->format == GST_H264_PARSE_FORMAT_BYTE;
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const gint nls = 4 - h264parse->nal_length_size;
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gboolean ok;
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gst_byte_writer_init_with_size (&bw, gst_buffer_get_size (buffer),
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FALSE);
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ok = gst_byte_writer_put_buffer (&bw, buffer, 0, h264parse->idr_pos);
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GST_DEBUG_OBJECT (h264parse, "- inserting SPS/PPS");
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for (i = 0; i < GST_H264_MAX_SPS_COUNT; i++) {
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if ((codec_nal = h264parse->sps_nals[i])) {
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gsize nal_size = gst_buffer_get_size (codec_nal);
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GST_DEBUG_OBJECT (h264parse, "inserting SPS nal");
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if (bs) {
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ok &= gst_byte_writer_put_uint32_be (&bw, 1);
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} else {
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ok &= gst_byte_writer_put_uint32_be (&bw,
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(nal_size << (nls * 8)));
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ok &= gst_byte_writer_set_pos (&bw,
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gst_byte_writer_get_pos (&bw) - nls);
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}
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ok &= gst_byte_writer_put_buffer (&bw, codec_nal, 0, nal_size);
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h264parse->last_report = new_ts;
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}
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}
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for (i = 0; i < GST_H264_MAX_PPS_COUNT; i++) {
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if ((codec_nal = h264parse->pps_nals[i])) {
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gsize nal_size = gst_buffer_get_size (codec_nal);
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GST_DEBUG_OBJECT (h264parse, "inserting PPS nal");
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if (bs) {
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ok &= gst_byte_writer_put_uint32_be (&bw, 1);
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} else {
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ok &= gst_byte_writer_put_uint32_be (&bw,
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(nal_size << (nls * 8)));
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ok &= gst_byte_writer_set_pos (&bw,
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gst_byte_writer_get_pos (&bw) - nls);
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}
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ok &= gst_byte_writer_put_buffer (&bw, codec_nal, 0, nal_size);
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h264parse->last_report = new_ts;
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}
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}
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ok &=
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gst_byte_writer_put_buffer (&bw, buffer, h264parse->idr_pos, -1);
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/* collect result and push */
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new_buf = gst_byte_writer_reset_and_get_buffer (&bw);
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gst_buffer_copy_into (new_buf, buffer, GST_BUFFER_COPY_METADATA, 0,
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-1);
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/* should already be keyframe/IDR, but it may not have been,
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* so mark it as such to avoid being discarded by picky decoder */
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GST_BUFFER_FLAG_UNSET (new_buf, GST_BUFFER_FLAG_DELTA_UNIT);
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gst_buffer_replace (&frame->out_buffer, new_buf);
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gst_buffer_unref (new_buf);
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/* some result checking seems to make some compilers happy */
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if (G_UNLIKELY (!ok)) {
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GST_ERROR_OBJECT (h264parse, "failed to insert SPS/PPS");
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}
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}
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}
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/* we pushed whatever we had */
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h264parse->push_codec = FALSE;
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h264parse->have_sps = FALSE;
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