From e459cf3e01a08f1a3ef1fb954a41cfa36b3e510c Mon Sep 17 00:00:00 2001 From: Thiago Santos Date: Tue, 25 Feb 2014 01:12:05 -0300 Subject: [PATCH] aacparse: put codec data on caps for loas format gst-libav audio decoder also needs codec data for LOAS format, otherwise it will complain about not having a decoder config and skip all packets https://bugzilla.gnome.org/show_bug.cgi?id=596772 --- gst/audioparsers/gstaacparse.c | 88 +++++++++++++++++++++++++++--------------- 1 file changed, 56 insertions(+), 32 deletions(-) diff --git a/gst/audioparsers/gstaacparse.c b/gst/audioparsers/gstaacparse.c index f693097..986893e 100644 --- a/gst/audioparsers/gstaacparse.c +++ b/gst/audioparsers/gstaacparse.c @@ -146,6 +146,30 @@ gst_aac_parse_init (GstAacParse * aacparse) GST_PAD_SET_ACCEPT_INTERSECT (GST_BASE_PARSE_SINK_PAD (aacparse)); } +static GstBuffer * +gst_aac_parse_create_codec_data (GstAacParse * aacparse) +{ + GstMapInfo map; + int idx; + GstBuffer *codec_data; + guint16 codec_data_data; + + idx = gst_codec_utils_aac_get_index_from_sample_rate (aacparse->sample_rate); + if (idx < 0) + return NULL; + + /* The codec_data data is according to AudioSpecificConfig, + ISO/IEC 14496-3, 1.6.2.1 */ + codec_data = gst_buffer_new_and_alloc (2); + gst_buffer_map (codec_data, &map, GST_MAP_WRITE); + codec_data_data = + (aacparse->object_type << 11) | (idx << 7) | (aacparse->channels << 3); + GST_WRITE_UINT16_BE (map.data, codec_data_data); + gst_buffer_unmap (codec_data, &map); + + return codec_data; +} + /** * gst_aac_parse_set_src_caps: @@ -165,7 +189,7 @@ gst_aac_parse_set_src_caps (GstAacParse * aacparse, GstCaps * sink_caps) gboolean res = FALSE; const gchar *stream_format; GstBuffer *codec_data; - guint16 codec_data_data; + gboolean need_codec_data = FALSE; GST_DEBUG_OBJECT (aacparse, "sink caps: %" GST_PTR_FORMAT, sink_caps); if (sink_caps) @@ -189,6 +213,7 @@ gst_aac_parse_set_src_caps (GstAacParse * aacparse, GstCaps * sink_caps) break; case DSPAAC_HEADER_LOAS: stream_format = "loas"; + need_codec_data = TRUE; break; default: stream_format = NULL; @@ -202,6 +227,12 @@ gst_aac_parse_set_src_caps (GstAacParse * aacparse, GstCaps * sink_caps) if (stream_format) gst_structure_set (s, "stream-format", G_TYPE_STRING, stream_format, NULL); + if (need_codec_data) { + codec_data = gst_aac_parse_create_codec_data (aacparse); + if (codec_data != NULL) + gst_structure_set (s, "codec_data", GST_TYPE_BUFFER, codec_data, NULL); + } + allowed = gst_pad_get_allowed_caps (GST_BASE_PARSE (aacparse)->srcpad); if (!gst_caps_can_intersect (src_caps, allowed)) { GST_DEBUG_OBJECT (GST_BASE_PARSE (aacparse)->srcpad, @@ -212,28 +243,14 @@ gst_aac_parse_set_src_caps (GstAacParse * aacparse, GstCaps * sink_caps) gst_caps_set_simple (src_caps, "stream-format", G_TYPE_STRING, "raw", NULL); if (gst_caps_can_intersect (src_caps, allowed)) { - GstMapInfo map; - int idx; - - idx = - gst_codec_utils_aac_get_index_from_sample_rate - (aacparse->sample_rate); - if (idx < 0) - goto not_a_known_rate; GST_DEBUG_OBJECT (GST_BASE_PARSE (aacparse)->srcpad, "Caps can intersect, we will drop the ADTS layer"); aacparse->output_header_type = DSPAAC_HEADER_NONE; - /* The codec_data data is according to AudioSpecificConfig, - ISO/IEC 14496-3, 1.6.2.1 */ - codec_data = gst_buffer_new_and_alloc (2); - gst_buffer_map (codec_data, &map, GST_MAP_WRITE); - codec_data_data = - (aacparse->object_type << 11) | - (idx << 7) | (aacparse->channels << 3); - GST_WRITE_UINT16_BE (map.data, codec_data_data); - gst_buffer_unmap (codec_data, &map); + codec_data = gst_aac_parse_create_codec_data (aacparse); + if (codec_data == NULL) + goto codec_data_failed; gst_caps_set_simple (src_caps, "codec_data", GST_TYPE_BUFFER, codec_data, NULL); } @@ -257,7 +274,7 @@ gst_aac_parse_set_src_caps (GstAacParse * aacparse, GstCaps * sink_caps) gst_caps_unref (src_caps); return res; -not_a_known_rate: +codec_data_failed: gst_caps_unref (allowed); gst_caps_unref (src_caps); return FALSE; @@ -510,11 +527,12 @@ gst_aac_parse_get_audio_sample_rate (GstAacParse * aacparse, GstBitReader * br, /* See table 1.13 in ISO/IEC 14496-3 */ static gboolean gst_aac_parse_read_loas_audio_specific_config (GstAacParse * aacparse, - GstBitReader * br, gint * sample_rate, gint * channels, guint32 * bits) + GstBitReader * br, gint * sample_rate, gint * channels, + guint8 * object_type, guint32 * bits) { - guint8 audio_object_type, channel_configuration; + guint8 channel_configuration; - if (!gst_aac_parse_get_audio_object_type (aacparse, br, &audio_object_type)) + if (!gst_aac_parse_get_audio_object_type (aacparse, br, object_type)) return FALSE; if (!gst_aac_parse_get_audio_sample_rate (aacparse, br, sample_rate)) @@ -527,15 +545,15 @@ gst_aac_parse_read_loas_audio_specific_config (GstAacParse * aacparse, if (!*channels) return FALSE; - if (audio_object_type == 5) { + if (*object_type == 5) { GST_LOG_OBJECT (aacparse, "Audio object type 5, so rereading sampling rate..."); if (!gst_aac_parse_get_audio_sample_rate (aacparse, br, sample_rate)) return FALSE; } - GST_INFO_OBJECT (aacparse, "Found LOAS config: %d Hz, %d channels", - *sample_rate, *channels); + GST_INFO_OBJECT (aacparse, "Found LOAS config: %d Hz, %d channels," + " audio object type: %u", *sample_rate, *channels, *object_type); /* There's LOTS of stuff next, but we ignore it for now as we have what we want (sample rate and number of channels */ @@ -549,7 +567,8 @@ gst_aac_parse_read_loas_audio_specific_config (GstAacParse * aacparse, static gboolean gst_aac_parse_read_loas_config (GstAacParse * aacparse, const guint8 * data, - guint avail, gint * sample_rate, gint * channels, gint * version) + guint avail, gint * sample_rate, gint * channels, + guint8 * object_type, gint * version) { GstBitReader br; guint8 u8, v, vA; @@ -621,14 +640,14 @@ gst_aac_parse_read_loas_config (GstAacParse * aacparse, const guint8 * data, if (!use_same_config) { if (v == 0) { if (!gst_aac_parse_read_loas_audio_specific_config (aacparse, &br, - sample_rate, channels, NULL)) + sample_rate, channels, object_type, NULL)) return FALSE; } else { guint32 bits, asc_len; if (!gst_aac_parse_latm_get_value (aacparse, &br, &asc_len)) return FALSE; if (!gst_aac_parse_read_loas_audio_specific_config (aacparse, &br, - sample_rate, channels, &bits)) + sample_rate, channels, object_type, &bits)) return FALSE; asc_len -= bits; if (!gst_bit_reader_skip (&br, asc_len)) @@ -851,17 +870,20 @@ gst_aac_parse_detect_stream (GstAacParse * aacparse, if (gst_aac_parse_check_loas_frame (aacparse, data, avail, drain, framesize, &need_data_loas)) { gint rate, channels; + guint8 object_type; GST_INFO ("LOAS, framesize: %d", *framesize); aacparse->header_type = DSPAAC_HEADER_LOAS; if (!gst_aac_parse_read_loas_config (aacparse, data, avail, &rate, - &channels, &aacparse->mpegversion)) { + &channels, &object_type, &aacparse->mpegversion)) { GST_WARNING_OBJECT (aacparse, "Error reading LOAS config"); return FALSE; } + aacparse->object_type = object_type; + if (rate && channels) { gst_base_parse_set_frame_rate (GST_BASE_PARSE (aacparse), rate, aacparse->frame_samples, 2, 2); @@ -1187,6 +1209,7 @@ gst_aac_parse_handle_frame (GstBaseParse * parse, GstBuffer *buffer; guint framesize; gint rate, channels; + guint8 object_type; aacparse = GST_AAC_PARSE (parse); buffer = frame->buffer; @@ -1269,15 +1292,16 @@ gst_aac_parse_handle_frame (GstBaseParse * parse, frame->overhead = 3; if (!gst_aac_parse_read_loas_config (aacparse, map.data, map.size, &rate, - &channels, NULL)) { + &channels, &object_type, NULL)) { GST_WARNING_OBJECT (aacparse, "Error reading LOAS config"); } else if (G_UNLIKELY (rate != aacparse->sample_rate || channels != aacparse->channels)) { aacparse->sample_rate = rate; aacparse->channels = channels; + aacparse->object_type = object_type; setcaps = TRUE; - GST_INFO_OBJECT (aacparse, "New LOAS config: %d Hz, %d channels", rate, - channels); + GST_INFO_OBJECT (aacparse, "New LOAS config: %d Hz, %d channels, " + "audio object type: %u", rate, channels, object_type); } /* We want to set caps both at start, and when rate/channels change. -- 2.7.4