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qtdemux: Export h.264 level in caps
This exports the h.264 level in the stream caps (as a string) which can be used to match a decoder, or as metadata. https://bugzilla.gnome.org/show_bug.cgi?id=614651
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1 changed files with 37 additions and 1 deletions
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@ -49,6 +49,7 @@
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#include "gst/gst-i18n-plugin.h"
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#include "gst/gst-i18n-plugin.h"
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#include <glib/gprintf.h>
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#include <gst/tag/tag.h>
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#include <gst/tag/tag.h>
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#include "qtatomparser.h"
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#include "qtatomparser.h"
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@ -5065,6 +5066,30 @@ avc_profile_idc_to_string (gint profile_idc, gint constraint_set_flags)
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return g_strdup (profile);
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return g_strdup (profile);
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}
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}
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static gchar *
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avc_level_idc_to_string (gint level_idc, gint constraint_set_flags)
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{
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const gchar *level = NULL;
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gchar buf[4];
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gint csf3;
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csf3 = (constraint_set_flags & 0x10) >> 4;
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if (level_idc == 11 && csf3)
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level = "1b";
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else {
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/* Level is (level_idc / 10) */
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if (level_idc % 10 == 0)
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g_sprintf (buf, "%d", level_idc / 10);
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else
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g_sprintf (buf, "%d.%d", level_idc / 10, level_idc % 10);
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level = buf;
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}
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return g_strdup (level);
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}
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/* parse the traks.
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/* parse the traks.
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* With each track we associate a new QtDemuxStream that contains all the info
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* With each track we associate a new QtDemuxStream that contains all the info
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* about the trak.
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* about the trak.
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@ -5308,7 +5333,7 @@ qtdemux_parse_trak (GstQTDemux * qtdemux, GNode * trak)
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if (len > 0x8 && QT_FOURCC (avc_data + 0x4) == FOURCC_avcC) {
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if (len > 0x8 && QT_FOURCC (avc_data + 0x4) == FOURCC_avcC) {
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GstBuffer *buf;
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GstBuffer *buf;
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gint size;
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gint size;
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gchar *profile;
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gchar *profile, *level;
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if (QT_UINT32 (avc_data) < len)
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if (QT_UINT32 (avc_data) < len)
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size = QT_UINT32 (avc_data) - 0x8;
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size = QT_UINT32 (avc_data) - 0x8;
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@ -5327,6 +5352,17 @@ qtdemux_parse_trak (GstQTDemux * qtdemux, GNode * trak)
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}
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}
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}
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}
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if (size >= 4) {
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/* Fourth byte is the level indication */
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level = avc_level_idc_to_string (QT_UINT8 (avc_data + 0xB),
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QT_UINT8 (avc_data + 0xA));
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if (level) {
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gst_caps_set_simple (stream->caps, "level", G_TYPE_STRING,
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level, NULL);
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g_free (level);
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}
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}
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GST_DEBUG_OBJECT (qtdemux, "found avcC codec_data in stsd");
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GST_DEBUG_OBJECT (qtdemux, "found avcC codec_data in stsd");
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buf = gst_buffer_new_and_alloc (size);
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buf = gst_buffer_new_and_alloc (size);
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