/* GStreamer FAAD (Free AAC Decoder) plugin * Copyright (C) 2003 Ronald Bultje * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include /* These are the correct types for these functions, as defined in the source. * However, upstream FAAD is distributed with a broken header file that defined * these wrongly (in a way which was broken on 64 bit systems). * Upstream CVS still has the bug, but has also renamed all the public symbols * for Better Corporate Branding (or whatever), so we're screwed there. * * We must call them using these definitions. Most distributions now have the * corrected header file (they distribute a patch along with the source), * but not all, hence this Truly Evil Hack. This hack will need updating if * upstream ever releases something with the new API. */ #define faadDecInit faadDecInit_no_definition #define faadDecInit2 faadDecInit2_no_definition #include "gstfaad.h" #undef faadDecInit #undef faadDecInit2 extern long faadDecInit (faacDecHandle, uint8_t *, uint32_t, uint32_t *, uint8_t *); extern int8_t faadDecInit2 (faacDecHandle, uint8_t *, uint32_t, uint32_t *, uint8_t *); GST_DEBUG_CATEGORY_STATIC (faad_debug); #define GST_CAT_DEFAULT faad_debug static GstElementDetails faad_details = { "Free AAC Decoder (FAAD)", "Codec/Decoder/Audio", "Free MPEG-2/4 AAC decoder", "Ronald Bultje " }; static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS ("audio/mpeg, " "mpegversion = (int) { 2, 4 }") ); #define STATIC_INT_CAPS(bpp) \ "audio/x-raw-int, " \ "endianness = (int) BYTE_ORDER, " \ "signed = (bool) TRUE, " \ "width = (int) " G_STRINGIFY (bpp) ", " \ "depth = (int) " G_STRINGIFY (bpp) ", " \ "rate = (int) [ 8000, 96000 ], " \ "channels = (int) [ 1, 8 ]" #if 0 #define STATIC_FLOAT_CAPS(bpp) \ "audio/x-raw-float, " \ "endianness = (int) BYTE_ORDER, " \ "depth = (int) " G_STRINGIFY (bpp) ", " \ "rate = (int) [ 8000, 96000 ], " \ "channels = (int) [ 1, 8 ]" #endif /* * All except 16-bit integer are disabled until someone fixes FAAD. * FAAD allocates approximately 8*1024*2 bytes bytes, which is enough * for 1 frame (1024 samples) of 6 channel (5.1) 16-bit integer 16bpp * audio, but not for any other. You'll get random segfaults, crashes * and even valgrind goes crazy. */ #define STATIC_CAPS \ STATIC_INT_CAPS (16) #if 0 #define NOTUSED "; " \ STATIC_INT_CAPS (24) \ "; " \ STATIC_INT_CAPS (32) \ "; " \ STATIC_FLOAT_CAPS (32) \ "; " \ STATIC_FLOAT_CAPS (64) #endif static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS (STATIC_CAPS) ); static void gst_faad_base_init (GstFaadClass * klass); static void gst_faad_class_init (GstFaadClass * klass); static void gst_faad_init (GstFaad * faad); static gboolean gst_faad_setcaps (GstPad * pad, GstCaps * caps); static GstCaps *gst_faad_srcgetcaps (GstPad * pad); static gboolean gst_faad_event (GstPad * pad, GstEvent * event); static GstFlowReturn gst_faad_chain (GstPad * pad, GstBuffer * buffer); static GstStateChangeReturn gst_faad_change_state (GstElement * element, GstStateChange transition); static GstElementClass *parent_class; /* NULL */ GType gst_faad_get_type (void) { static GType gst_faad_type = 0; if (!gst_faad_type) { static const GTypeInfo gst_faad_info = { sizeof (GstFaadClass), (GBaseInitFunc) gst_faad_base_init, NULL, (GClassInitFunc) gst_faad_class_init, NULL, NULL, sizeof (GstFaad), 0, (GInstanceInitFunc) gst_faad_init, }; gst_faad_type = g_type_register_static (GST_TYPE_ELEMENT, "GstFaad", &gst_faad_info, 0); } return gst_faad_type; } static void gst_faad_base_init (GstFaadClass * klass) { GstElementClass *element_class = GST_ELEMENT_CLASS (klass); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&src_template)); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&sink_template)); gst_element_class_set_details (element_class, &faad_details); GST_DEBUG_CATEGORY_INIT (faad_debug, "faad", 0, "AAC decoding"); } static void gst_faad_class_init (GstFaadClass * klass) { GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass); parent_class = g_type_class_peek_parent (klass); gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_faad_change_state); } static void gst_faad_init (GstFaad * faad) { faad->handle = NULL; faad->samplerate = -1; faad->channels = -1; faad->tempbuf = NULL; faad->need_channel_setup = TRUE; faad->channel_positions = NULL; faad->init = FALSE; faad->next_ts = 0; faad->prev_ts = GST_CLOCK_TIME_NONE; faad->bytes_in = 0; faad->sum_dur_out = 0; faad->packetised = FALSE; faad->sinkpad = gst_pad_new_from_template (gst_static_pad_template_get (&sink_template), "sink"); gst_element_add_pad (GST_ELEMENT (faad), faad->sinkpad); gst_pad_set_event_function (faad->sinkpad, GST_DEBUG_FUNCPTR (gst_faad_event)); gst_pad_set_setcaps_function (faad->sinkpad, GST_DEBUG_FUNCPTR (gst_faad_setcaps)); gst_pad_set_chain_function (faad->sinkpad, GST_DEBUG_FUNCPTR (gst_faad_chain)); faad->srcpad = gst_pad_new_from_template (gst_static_pad_template_get (&src_template), "src"); gst_element_add_pad (GST_ELEMENT (faad), faad->srcpad); gst_pad_use_fixed_caps (faad->srcpad); gst_pad_set_getcaps_function (faad->srcpad, GST_DEBUG_FUNCPTR (gst_faad_srcgetcaps)); } static gboolean gst_faad_setcaps (GstPad * pad, GstCaps * caps) { GstFaad *faad = GST_FAAD (gst_pad_get_parent (pad)); GstStructure *str = gst_caps_get_structure (caps, 0); GstBuffer *buf; const GValue *value; /* Assume raw stream */ faad->packetised = FALSE; if ((value = gst_structure_get_value (str, "codec_data"))) { guint samplerate; guchar channels; /* We have codec data, means packetised stream */ faad->packetised = TRUE; buf = GST_BUFFER (gst_value_get_mini_object (value)); /* someone forgot that char can be unsigned when writing the API */ if ((gint8) faadDecInit2 (faad->handle, GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf), &samplerate, &channels) < 0) { GST_DEBUG ("faacDecInit2() failed"); return FALSE; } #if 0 faad->samplerate = samplerate; faad->channels = channels; #endif /* not updating these here, so they are updated in the * chain function, and new caps are created etc. */ faad->samplerate = 0; faad->channels = 0; faad->init = TRUE; if (faad->tempbuf) { gst_buffer_unref (faad->tempbuf); faad->tempbuf = NULL; } } else { faad->init = FALSE; } faad->need_channel_setup = TRUE; return TRUE; } /* * Channel identifier conversion - caller g_free()s result! */ /* static guchar * gst_faad_chanpos_from_gst (GstAudioChannelPosition * pos, guint num) { guchar *fpos = g_new (guchar, num); guint n; for (n = 0; n < num; n++) { switch (pos[n]) { case GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT: fpos[n] = FRONT_CHANNEL_LEFT; break; case GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT: fpos[n] = FRONT_CHANNEL_RIGHT; break; case GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER: case GST_AUDIO_CHANNEL_POSITION_FRONT_MONO: fpos[n] = FRONT_CHANNEL_CENTER; break; case GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT: fpos[n] = SIDE_CHANNEL_LEFT; break; case GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT: fpos[n] = SIDE_CHANNEL_RIGHT; break; case GST_AUDIO_CHANNEL_POSITION_REAR_LEFT: fpos[n] = BACK_CHANNEL_LEFT; break; case GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT: fpos[n] = BACK_CHANNEL_RIGHT; break; case GST_AUDIO_CHANNEL_POSITION_REAR_CENTER: fpos[n] = BACK_CHANNEL_CENTER; break; case GST_AUDIO_CHANNEL_POSITION_LFE: fpos[n] = LFE_CHANNEL; break; default: GST_WARNING ("Unsupported GST channel position 0x%x encountered", pos[n]); g_free (fpos); return NULL; } } return fpos; } */ static GstAudioChannelPosition * gst_faad_chanpos_to_gst (guchar * fpos, guint num) { GstAudioChannelPosition *pos = g_new (GstAudioChannelPosition, num); guint n; for (n = 0; n < num; n++) { switch (fpos[n]) { case FRONT_CHANNEL_LEFT: pos[n] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT; break; case FRONT_CHANNEL_RIGHT: pos[n] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT; break; case FRONT_CHANNEL_CENTER: /* argh, mono = center */ if (num == 1) pos[n] = GST_AUDIO_CHANNEL_POSITION_FRONT_MONO; else pos[n] = GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER; break; case SIDE_CHANNEL_LEFT: pos[n] = GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT; break; case SIDE_CHANNEL_RIGHT: pos[n] = GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT; break; case BACK_CHANNEL_LEFT: pos[n] = GST_AUDIO_CHANNEL_POSITION_REAR_LEFT; break; case BACK_CHANNEL_RIGHT: pos[n] = GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT; break; case BACK_CHANNEL_CENTER: pos[n] = GST_AUDIO_CHANNEL_POSITION_REAR_CENTER; break; case LFE_CHANNEL: pos[n] = GST_AUDIO_CHANNEL_POSITION_LFE; break; default: GST_WARNING ("Unsupported FAAD channel position 0x%x encountered", fpos[n]); g_free (pos); return NULL; } } return pos; } /* static GstPadLinkReturn gst_faad_sinkconnect (GstPad * pad, const GstCaps * caps) { GstFaad *faad = GST_FAAD (gst_pad_get_parent (pad)); GstStructure *str = gst_caps_get_structure (caps, 0); const GValue *value; GstBuffer *buf; // Assume raw stream faad->packetised = FALSE; if ((value = gst_structure_get_value (str, "codec_data"))) { gulong samplerate; guchar channels; // We have codec data, means packetised stream faad->packetised = TRUE; buf = g_value_get_boxed (value); // someone forgot that char can be unsigned when writing the API if ((gint8) faacDecInit2 (faad->handle, GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf), &samplerate, &channels) < 0) return GST_PAD_LINK_REFUSED; //faad->samplerate = samplerate; //faad->channels = channels; faad->init = TRUE; if (faad->tempbuf) { gst_buffer_unref (faad->tempbuf); faad->tempbuf = NULL; } } else { faad->init = FALSE; } faad->need_channel_setup = TRUE; // if there's no decoderspecificdata, it's all fine. We cannot know // * much more at this point... return GST_PAD_LINK_OK; } */ static GstCaps * gst_faad_srcgetcaps (GstPad * pad) { GstFaad *faad = GST_FAAD (gst_pad_get_parent (pad)); static GstAudioChannelPosition *supported_positions = NULL; static gint num_supported_positions = LFE_CHANNEL - FRONT_CHANNEL_CENTER + 1; GstCaps *templ; if (!supported_positions) { guchar *supported_fpos = g_new0 (guchar, num_supported_positions); gint n; for (n = 0; n < num_supported_positions; n++) { supported_fpos[n] = n + FRONT_CHANNEL_CENTER; } supported_positions = gst_faad_chanpos_to_gst (supported_fpos, num_supported_positions); g_free (supported_fpos); } if (faad->handle != NULL && faad->channels != -1 && faad->samplerate != -1) { GstCaps *caps = gst_caps_new_empty (); GstStructure *str; gint fmt[] = { FAAD_FMT_16BIT, #if 0 FAAD_FMT_24BIT, FAAD_FMT_32BIT, FAAD_FMT_FLOAT, FAAD_FMT_DOUBLE, #endif -1 } , n; for (n = 0; fmt[n] != -1; n++) { switch (fmt[n]) { case FAAD_FMT_16BIT: str = gst_structure_new ("audio/x-raw-int", "signed", G_TYPE_BOOLEAN, TRUE, "width", G_TYPE_INT, 16, "depth", G_TYPE_INT, 16, NULL); break; #if 0 case FAAD_FMT_24BIT: str = gst_structure_new ("audio/x-raw-int", "signed", G_TYPE_BOOLEAN, TRUE, "width", G_TYPE_INT, 24, "depth", G_TYPE_INT, 24, NULL); break; case FAAD_FMT_32BIT: str = gst_structure_new ("audio/x-raw-int", "signed", G_TYPE_BOOLEAN, TRUE, "width", G_TYPE_INT, 32, "depth", G_TYPE_INT, 32, NULL); break; case FAAD_FMT_FLOAT: str = gst_structure_new ("audio/x-raw-float", "depth", G_TYPE_INT, 32, NULL); break; case FAAD_FMT_DOUBLE: str = gst_structure_new ("audio/x-raw-float", "depth", G_TYPE_INT, 64, NULL); break; #endif default: str = NULL; break; } if (!str) continue; if (faad->samplerate != -1) { gst_structure_set (str, "rate", G_TYPE_INT, faad->samplerate, NULL); } else { gst_structure_set (str, "rate", GST_TYPE_INT_RANGE, 8000, 96000, NULL); } if (faad->channels != -1) { gst_structure_set (str, "channels", G_TYPE_INT, faad->channels, NULL); /* put channel information here */ if (faad->channel_positions) { GstAudioChannelPosition *pos; pos = gst_faad_chanpos_to_gst (faad->channel_positions, faad->channels); if (!pos) { gst_structure_free (str); continue; } gst_audio_set_channel_positions (str, pos); g_free (pos); } else { gst_audio_set_structure_channel_positions_list (str, supported_positions, num_supported_positions); } } else { gst_structure_set (str, "channels", GST_TYPE_INT_RANGE, 1, 8, NULL); /* we set channel positions later */ } gst_structure_set (str, "endianness", G_TYPE_INT, G_BYTE_ORDER, NULL); gst_caps_append_structure (caps, str); } if (faad->channels == -1) { gst_audio_set_caps_channel_positions_list (caps, supported_positions, num_supported_positions); } gst_object_unref (faad); return caps; } /* template with channel positions */ templ = gst_caps_copy (GST_PAD_TEMPLATE_CAPS (GST_PAD_PAD_TEMPLATE (pad))); gst_audio_set_caps_channel_positions_list (templ, supported_positions, num_supported_positions); gst_object_unref (faad); return templ; } /** static GstPadLinkReturn gst_faad_srcconnect (GstPad * pad, const GstCaps * caps) { GstStructure *structure; const gchar *mimetype; gint fmt = -1; gint depth, rate, channels; GstFaad *faad = GST_FAAD (gst_pad_get_parent (pad)); structure = gst_caps_get_structure (caps, 0); if (!faad->handle || (faad->samplerate == -1 || faad->channels == -1) || !faad->channel_positions) { return GST_PAD_LINK_DELAYED; } mimetype = gst_structure_get_name (structure); // Samplerate and channels are normally provided through // * the getcaps function if (!gst_structure_get_int (structure, "channels", &channels) || !gst_structure_get_int (structure, "rate", &rate) || rate != faad->samplerate || channels != faad->channels) { return GST_PAD_LINK_REFUSED; } // Another internal checkup. if (faad->need_channel_setup) { GstAudioChannelPosition *pos; guchar *fpos; guint i; pos = gst_audio_get_channel_positions (structure); if (!pos) { return GST_PAD_LINK_DELAYED; } fpos = gst_faad_chanpos_from_gst (pos, faad->channels); g_free (pos); if (!fpos) return GST_PAD_LINK_REFUSED; for (i = 0; i < faad->channels; i++) { if (fpos[i] != faad->channel_positions[i]) { g_free (fpos); return GST_PAD_LINK_REFUSED; } } g_free (fpos); } if (!strcmp (mimetype, "audio/x-raw-int")) { gint width; if (!gst_structure_get_int (structure, "depth", &depth) || !gst_structure_get_int (structure, "width", &width)) return GST_PAD_LINK_REFUSED; if (depth != width) return GST_PAD_LINK_REFUSED; switch (depth) { case 16: fmt = FAAD_FMT_16BIT; break; #if 0 case 24: fmt = FAAD_FMT_24BIT; break; case 32: fmt = FAAD_FMT_32BIT; break; #endif } } else { if (!gst_structure_get_int (structure, "depth", &depth)) return GST_PAD_LINK_REFUSED; switch (depth) { #if 0 case 32: fmt = FAAD_FMT_FLOAT; break; case 64: fmt = FAAD_FMT_DOUBLE; break; #endif } } if (fmt != -1) { faacDecConfiguration *conf; conf = faacDecGetCurrentConfiguration (faad->handle); conf->outputFormat = fmt; if (faacDecSetConfiguration (faad->handle, conf) == 0) return GST_PAD_LINK_REFUSED; // FIXME: handle return value, how? faad->bps = depth / 8; return GST_PAD_LINK_OK; } return GST_PAD_LINK_REFUSED; }*/ static gboolean gst_faad_event (GstPad * pad, GstEvent * event) { GstFaad *faad; gboolean res = TRUE; faad = GST_FAAD (gst_pad_get_parent (pad)); GST_LOG ("Handling %s event", GST_EVENT_TYPE_NAME (event)); /* FIXME: we should probably handle FLUSH and also * SEEK in the case where we are not in a container * (when our newsegment was in BYTES) */ switch (GST_EVENT_TYPE (event)) { case GST_EVENT_EOS: GST_STREAM_LOCK (pad); if (faad->tempbuf != NULL) { gst_buffer_unref (faad->tempbuf); faad->tempbuf = NULL; } res = gst_pad_push_event (faad->srcpad, event); GST_STREAM_UNLOCK (pad); break; case GST_EVENT_NEWSEGMENT: { GstFormat fmt; gboolean is_update; gint64 start, end, base; gdouble rate; gst_event_parse_newsegment (event, &is_update, &rate, &fmt, &start, &end, &base); if (fmt == GST_FORMAT_TIME) { GST_DEBUG ("Got NEWSEGMENT event in GST_FORMAT_TIME, passing on (%" GST_TIME_FORMAT " - %" GST_TIME_FORMAT ")", GST_TIME_ARGS (start), GST_TIME_ARGS (end)); } else if (fmt == GST_FORMAT_BYTES) { GstEvent *new_ev; guint64 new_start = 0; guint64 new_end = GST_CLOCK_TIME_NONE; GST_DEBUG ("Got NEWSEGMENT event in GST_FORMAT_BYTES (%" G_GUINT64_FORMAT " - %" G_GUINT64_FORMAT ")", start, end); if (faad->bytes_in > 0 && faad->sum_dur_out > 0) { /* try to convert based on the average bitrate so far */ new_start = (faad->sum_dur_out * start) / faad->bytes_in; if (new_end != (guint64) - 1) { new_end = (faad->sum_dur_out * end) / faad->bytes_in; } } else { GST_DEBUG ("no average bitrate yet, sending newsegment with start at 0"); } new_ev = gst_event_new_newsegment (is_update, rate, GST_FORMAT_TIME, new_start, new_end, base); gst_event_unref (event); event = new_ev; GST_DEBUG ("Sending new NEWSEGMENT event, time %" GST_TIME_FORMAT " - %" GST_TIME_FORMAT, GST_TIME_ARGS (new_start), GST_TIME_ARGS (new_end)); } GST_STREAM_LOCK (pad); res = gst_pad_push_event (faad->srcpad, event); GST_STREAM_UNLOCK (pad); break; } default: res = gst_pad_event_default (pad, event); break; } return res; } static gboolean gst_faad_update_caps (GstFaad * faad, faacDecFrameInfo * info, GstCaps ** p_caps) { GstAudioChannelPosition *pos; GstCaps *caps; /* store new negotiation information */ faad->samplerate = info->samplerate; faad->channels = info->channels; g_free (faad->channel_positions); faad->channel_positions = g_memdup (info->channel_position, faad->channels); caps = gst_caps_new_simple ("audio/x-raw-int", "endianness", G_TYPE_INT, G_BYTE_ORDER, "signed", G_TYPE_BOOLEAN, TRUE, "width", G_TYPE_INT, 16, "depth", G_TYPE_INT, 16, "rate", G_TYPE_INT, faad->samplerate, "channels", G_TYPE_INT, faad->channels, NULL); faad->bps = 16 / 8; pos = gst_faad_chanpos_to_gst (faad->channel_positions, faad->channels); gst_audio_set_channel_positions (gst_caps_get_structure (caps, 0), pos); g_free (pos); GST_DEBUG ("New output caps: %" GST_PTR_FORMAT, caps); if (!gst_pad_set_caps (faad->srcpad, caps)) { gst_caps_unref (caps); return FALSE; } *p_caps = caps; return TRUE; } static GstFlowReturn gst_faad_chain (GstPad * pad, GstBuffer * buffer) { GstFlowReturn ret = GST_FLOW_OK; guint input_size; guint skip_bytes = 0; guchar *input_data; GstFaad *faad; GstBuffer *outbuf; GstCaps *caps = NULL; faacDecFrameInfo info; void *out; gboolean run_loop = TRUE; faad = GST_FAAD (gst_pad_get_parent (pad)); if (GST_BUFFER_TIMESTAMP (buffer) != GST_CLOCK_TIME_NONE) { /* some demuxers send multiple buffers in a row * with the same timestamp (e.g. matroskademux) */ if (GST_BUFFER_TIMESTAMP (buffer) != faad->prev_ts) { faad->next_ts = GST_BUFFER_TIMESTAMP (buffer); faad->prev_ts = GST_BUFFER_TIMESTAMP (buffer); } GST_DEBUG ("Timestamp on incoming buffer: %" GST_TIME_FORMAT ", next_ts: %" GST_TIME_FORMAT, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)), GST_TIME_ARGS (faad->next_ts)); } /* buffer + remaining data */ if (faad->tempbuf) { buffer = gst_buffer_join (faad->tempbuf, buffer); faad->tempbuf = NULL; } /* init if not already done during capsnego */ if (!faad->init) { guint32 samplerate; guchar channels; glong init_res; init_res = faacDecInit (faad->handle, GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer), &samplerate, &channels); if (init_res < 0) { GST_ELEMENT_ERROR (faad, STREAM, DECODE, (NULL), ("Failed to init decoder from stream")); gst_object_unref (faad); return GST_FLOW_UNEXPECTED; } skip_bytes = init_res; faad->init = TRUE; /* make sure we create new caps below */ faad->samplerate = 0; faad->channels = 0; } /* decode cycle */ input_data = GST_BUFFER_DATA (buffer); input_size = GST_BUFFER_SIZE (buffer); info.bytesconsumed = input_size - skip_bytes; if (!faad->packetised) { /* We must check that ourselves for raw stream */ run_loop = (input_size >= FAAD_MIN_STREAMSIZE); } while ((input_size > 0) && run_loop) { if (faad->packetised) { /* Only one packet per buffer, no matter how much is really consumed */ run_loop = FALSE; } else { if (input_size < FAAD_MIN_STREAMSIZE || info.bytesconsumed <= 0) { break; } } out = faacDecDecode (faad->handle, &info, input_data + skip_bytes, input_size - skip_bytes); if (info.error) { GST_ELEMENT_ERROR (faad, STREAM, DECODE, (NULL), ("Failed to decode buffer: %s", faacDecGetErrorMessage (info.error))); ret = GST_FLOW_ERROR; goto out; } if (info.bytesconsumed > input_size) info.bytesconsumed = input_size; input_size -= info.bytesconsumed; input_data += info.bytesconsumed; if (out && info.samples > 0) { gboolean fmt_change = FALSE; /* see if we need to renegotiate */ if (info.samplerate != faad->samplerate || info.channels != faad->channels || !faad->channel_positions) { fmt_change = TRUE; } else { gint i; for (i = 0; i < info.channels; i++) { if (info.channel_position[i] != faad->channel_positions[i]) fmt_change = TRUE; } } if (fmt_change) { if (!gst_faad_update_caps (faad, &info, &caps)) { GST_ELEMENT_ERROR (faad, CORE, NEGOTIATION, (NULL), ("Setting caps on source pad failed")); ret = GST_FLOW_ERROR; goto out; } } /* play decoded data */ if (info.samples > 0 && GST_PAD_PEER (faad->srcpad)) { guint bufsize = info.samples * faad->bps; guint num_samples = info.samples / faad->channels; /* note: info.samples is total samples, not per channel */ ret = gst_pad_alloc_buffer (faad->srcpad, 0, bufsize, caps, &outbuf); if (ret != GST_FLOW_OK) goto out; memcpy (GST_BUFFER_DATA (outbuf), out, GST_BUFFER_SIZE (outbuf)); GST_BUFFER_OFFSET (outbuf) = GST_CLOCK_TIME_TO_FRAMES (faad->next_ts, faad->samplerate); GST_BUFFER_TIMESTAMP (outbuf) = faad->next_ts; GST_BUFFER_DURATION (outbuf) = GST_FRAMES_TO_CLOCK_TIME (num_samples, faad->samplerate); faad->next_ts += GST_BUFFER_DURATION (outbuf); faad->sum_dur_out += GST_BUFFER_DURATION (outbuf); GST_DEBUG ("pushing buffer, off=%" G_GUINT64_FORMAT ", ts=%" GST_TIME_FORMAT, GST_BUFFER_OFFSET (outbuf), GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (outbuf))); if ((ret = gst_pad_push (faad->srcpad, outbuf)) != GST_FLOW_OK && ret != GST_FLOW_NOT_LINKED) goto out; } } } /* Keep the leftovers in raw stream */ if (input_size > 0 && !faad->packetised) { if (input_size < GST_BUFFER_SIZE (buffer)) { faad->tempbuf = gst_buffer_create_sub (buffer, GST_BUFFER_SIZE (buffer) - input_size, input_size); } else { faad->tempbuf = buffer; gst_buffer_ref (buffer); } } faad->bytes_in += input_size; out: if (caps) gst_caps_unref (caps); gst_buffer_unref (buffer); gst_object_unref (faad); return ret; } static GstStateChangeReturn gst_faad_change_state (GstElement * element, GstStateChange transition) { GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS; GstFaad *faad = GST_FAAD (element); switch (transition) { case GST_STATE_CHANGE_NULL_TO_READY: { if (!(faad->handle = faacDecOpen ())) return GST_STATE_CHANGE_FAILURE; else { faacDecConfiguration *conf; conf = faacDecGetCurrentConfiguration (faad->handle); conf->defObjectType = LC; /* conf->dontUpSampleImplicitSBR = 1; */ conf->outputFormat = FAAD_FMT_16BIT; if (faacDecSetConfiguration (faad->handle, conf) == 0) return GST_STATE_CHANGE_FAILURE; } break; } default: break; } if (GST_ELEMENT_CLASS (parent_class)->change_state) ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); switch (transition) { case GST_STATE_CHANGE_PAUSED_TO_READY: faad->samplerate = -1; faad->channels = -1; faad->need_channel_setup = TRUE; faad->init = FALSE; g_free (faad->channel_positions); faad->channel_positions = NULL; faad->next_ts = 0; faad->prev_ts = GST_CLOCK_TIME_NONE; break; case GST_STATE_CHANGE_READY_TO_NULL: faacDecClose (faad->handle); faad->handle = NULL; if (faad->tempbuf) { gst_buffer_unref (faad->tempbuf); faad->tempbuf = NULL; } break; default: break; } return ret; } static gboolean plugin_init (GstPlugin * plugin) { return gst_element_register (plugin, "faad", GST_RANK_PRIMARY, GST_TYPE_FAAD); } GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR, "faad", "Free AAC Decoder (FAAD)", plugin_init, VERSION, "GPL", GST_PACKAGE, GST_ORIGIN)