diff options
Diffstat (limited to 'ext/ogg/gstoggstream.c')
| -rw-r--r-- | ext/ogg/gstoggstream.c | 1315 |
1 files changed, 0 insertions, 1315 deletions
diff --git a/ext/ogg/gstoggstream.c b/ext/ogg/gstoggstream.c deleted file mode 100644 index 3dac5ad0..00000000 --- a/ext/ogg/gstoggstream.c +++ /dev/null @@ -1,1315 +0,0 @@ -/* GStreamer Ogg Granulepos Mapping Utility Functions - * Copyright (C) 2006 Tim-Philipp Müller <tim centricular net> - * Copyright (C) 2009 David Schleef <ds@schleef.org> - * - * 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 "gstoggstream.h" -#include "dirac_parse.h" - -#include <gst/riff/riff-media.h> - -#include <string.h> - -GST_DEBUG_CATEGORY_EXTERN (gst_ogg_demux_debug); -GST_DEBUG_CATEGORY_EXTERN (gst_ogg_demux_setup_debug); -#define GST_CAT_DEFAULT gst_ogg_demux_debug - -typedef struct _GstOggMap GstOggMap; - -typedef gboolean (*GstOggMapSetupFunc) (GstOggStream * pad, - ogg_packet * packet); -typedef GstClockTime (*GstOggMapToTimeFunc) (GstOggStream * pad, - gint64 granulepos); -typedef gint64 (*GstOggMapToGranuleFunc) (GstOggStream * pad, - gint64 granulepos); -typedef gint64 (*GstOggMapToGranuleposFunc) (GstOggStream * pad, - gint64 granule, gint64 keyframe_granule); - -/* returns TRUE if the granulepos denotes a key frame */ -typedef gboolean (*GstOggMapIsKeyFrameFunc) (GstOggStream * pad, - gint64 granulepos); - -/* returns TRUE if the given packet is a stream header packet */ -typedef gboolean (*GstOggMapIsHeaderPacketFunc) (GstOggStream * pad, - ogg_packet * packet); -typedef gint64 (*GstOggMapPacketDurationFunc) (GstOggStream * pad, - ogg_packet * packet); - - - -#define SKELETON_FISBONE_MIN_SIZE 52 - - -struct _GstOggMap -{ - const gchar *id; - int id_length; - int min_packet_size; - const gchar *media_type; - GstOggMapSetupFunc setup_func; - GstOggMapToGranuleFunc granulepos_to_granule_func; - GstOggMapToGranuleposFunc granule_to_granulepos_func; - GstOggMapIsKeyFrameFunc is_key_frame_func; - GstOggMapIsHeaderPacketFunc is_header_func; - GstOggMapPacketDurationFunc packet_duration_func; -}; - -static const GstOggMap mappers[]; - -GstClockTime -gst_ogg_stream_get_packet_start_time (GstOggStream * pad, ogg_packet * packet) -{ - int duration; - - if (packet->granulepos == -1) { - return GST_CLOCK_TIME_NONE; - } - - duration = gst_ogg_stream_get_packet_duration (pad, packet); - if (duration == -1) { - return GST_CLOCK_TIME_NONE; - } - - return gst_ogg_stream_granule_to_time (pad, - gst_ogg_stream_granulepos_to_granule (pad, - packet->granulepos) - duration); -} - -GstClockTime -gst_ogg_stream_get_start_time_for_granulepos (GstOggStream * pad, - gint64 granulepos) -{ - if (pad->frame_size == 0) - return GST_CLOCK_TIME_NONE; - - return gst_ogg_stream_granule_to_time (pad, - gst_ogg_stream_granulepos_to_granule (pad, granulepos)); -} - -GstClockTime -gst_ogg_stream_get_end_time_for_granulepos (GstOggStream * pad, - gint64 granulepos) -{ - return gst_ogg_stream_granule_to_time (pad, - gst_ogg_stream_granulepos_to_granule (pad, granulepos)); -} - -GstClockTime -gst_ogg_stream_granule_to_time (GstOggStream * pad, gint64 granule) -{ - if (granule == 0 || pad->granulerate_n == 0 || pad->granulerate_d == 0) - return 0; - - return gst_util_uint64_scale (granule, GST_SECOND * pad->granulerate_d, - pad->granulerate_n); -} - -gint64 -gst_ogg_stream_granulepos_to_granule (GstOggStream * pad, gint64 granulepos) -{ - if (granulepos == -1 || granulepos == 0) { - return granulepos; - } - - if (mappers[pad->map].granulepos_to_granule_func == NULL) { - GST_WARNING ("Failed to convert granulepos to granule"); - return -1; - } - - return mappers[pad->map].granulepos_to_granule_func (pad, granulepos); -} - -gint64 -gst_ogg_stream_granulepos_to_key_granule (GstOggStream * pad, gint64 granulepos) -{ - if (granulepos == -1 || granulepos == 0) { - return granulepos; - } - - return granulepos >> pad->granuleshift; -} - -gint64 -gst_ogg_stream_granule_to_granulepos (GstOggStream * pad, gint64 granule, - gint64 keyframe_granule) -{ - if (granule == -1 || granule == 0) { - return granule; - } - - if (mappers[pad->map].granule_to_granulepos_func == NULL) { - GST_WARNING ("Failed to convert granule to granulepos"); - return -1; - } - - return mappers[pad->map].granule_to_granulepos_func (pad, granule, - keyframe_granule); -} - -gboolean -gst_ogg_stream_packet_granulepos_is_key_frame (GstOggStream * pad, - gint64 granulepos) -{ - if (granulepos == -1) { - return FALSE; - } - - if (mappers[pad->map].is_key_frame_func == NULL) { - GST_WARNING ("Failed to determine key frame"); - return FALSE; - } - - return mappers[pad->map].is_key_frame_func (pad, granulepos); -} - -gboolean -gst_ogg_stream_packet_is_header (GstOggStream * pad, ogg_packet * packet) -{ - if (mappers[pad->map].is_header_func == NULL) { - GST_WARNING ("Failed to determine header"); - return FALSE; - } - - return mappers[pad->map].is_header_func (pad, packet); -} - -gint64 -gst_ogg_stream_get_packet_duration (GstOggStream * pad, ogg_packet * packet) -{ - if (mappers[pad->map].packet_duration_func == NULL) { - GST_WARNING ("Failed to determine packet duration"); - return -1; - } - - return mappers[pad->map].packet_duration_func (pad, packet); -} - - - - -/* some generic functions */ - -static gboolean -is_keyframe_true (GstOggStream * pad, gint64 granulepos) -{ - return TRUE; -} - -static gint64 -granulepos_to_granule_default (GstOggStream * pad, gint64 granulepos) -{ - gint64 keyindex, keyoffset; - - if (pad->granuleshift != 0) { - keyindex = granulepos >> pad->granuleshift; - keyoffset = granulepos - (keyindex << pad->granuleshift); - return keyindex + keyoffset; - } else { - return granulepos; - } -} - - -static gint64 -granule_to_granulepos_default (GstOggStream * pad, gint64 granule, - gint64 keyframe_granule) -{ - gint64 keyoffset; - - if (pad->granuleshift != 0) { - keyoffset = granule - keyframe_granule; - return (keyframe_granule << pad->granuleshift) | keyoffset; - } else { - return granule; - } -} - -#ifdef unused -static gboolean -is_header_unknown (GstOggStream * pad, ogg_packet * packet) -{ - GST_WARNING ("don't know how to detect header"); - return FALSE; -} -#endif - -static gboolean -is_header_true (GstOggStream * pad, ogg_packet * packet) -{ - return TRUE; -} - -static gboolean -is_header_count (GstOggStream * pad, ogg_packet * packet) -{ - if (pad->n_header_packets_seen < pad->n_header_packets) { - return TRUE; - } - return FALSE; -} - -static gint64 -packet_duration_constant (GstOggStream * pad, ogg_packet * packet) -{ - return pad->frame_size; -} - -/* theora */ - -static gboolean -setup_theora_mapper (GstOggStream * pad, ogg_packet * packet) -{ - guint8 *data = packet->packet; - guint w, h, par_d, par_n; - - w = GST_READ_UINT24_BE (data + 14) & 0xFFFFF0; - h = GST_READ_UINT24_BE (data + 17) & 0xFFFFF0; - - pad->granulerate_n = GST_READ_UINT32_BE (data + 22); - pad->granulerate_d = GST_READ_UINT32_BE (data + 26); - - par_n = GST_READ_UINT24_BE (data + 30); - par_d = GST_READ_UINT24_BE (data + 33); - - GST_LOG ("fps = %d/%d, PAR = %u/%u, width = %u, height = %u", - pad->granulerate_n, pad->granulerate_d, par_n, par_d, w, h); - - /* 2 bits + 3 bits = 5 bits KFGSHIFT */ - pad->granuleshift = ((GST_READ_UINT8 (data + 40) & 0x03) << 3) + - (GST_READ_UINT8 (data + 41) >> 5); - - pad->n_header_packets = 3; - pad->frame_size = 1; - - if (pad->granulerate_n == 0 || pad->granulerate_d == 0) { - GST_WARNING ("frame rate %d/%d", pad->granulerate_n, pad->granulerate_d); - return FALSE; - } - - pad->caps = gst_caps_new_simple ("video/x-theora", NULL); - - if (w > 0 && h > 0) { - gst_caps_set_simple (pad->caps, "width", G_TYPE_INT, w, "height", - G_TYPE_INT, h, NULL); - } - - /* PAR of 0:N, N:0 and 0:0 is allowed and maps to 1:1 */ - if (par_n == 0 || par_d == 0) - par_n = par_d = 1; - - /* only add framerate now so caps look prettier, with width/height first */ - gst_caps_set_simple (pad->caps, "framerate", GST_TYPE_FRACTION, - pad->granulerate_n, pad->granulerate_d, "pixel-aspect-ratio", - GST_TYPE_FRACTION, par_n, par_d, NULL); - - return TRUE; -} - -static gint64 -granulepos_to_granule_theora (GstOggStream * pad, gint64 granulepos) -{ - gint64 keyindex, keyoffset; - - if (pad->granuleshift != 0) { - keyindex = granulepos >> pad->granuleshift; - keyoffset = granulepos - (keyindex << pad->granuleshift); - if (keyoffset == 0) { - pad->theora_has_zero_keyoffset = TRUE; - } - if (pad->theora_has_zero_keyoffset) { - keyoffset++; - } - return keyindex + keyoffset; - } else { - return granulepos; - } -} - -static gboolean -is_keyframe_theora (GstOggStream * pad, gint64 granulepos) -{ - gint64 frame_mask; - - if (granulepos == (gint64) - 1) - return FALSE; - - frame_mask = (1 << (pad->granuleshift + 1)) - 1; - - return ((granulepos & frame_mask) == 0); -} - -static gboolean -is_header_theora (GstOggStream * pad, ogg_packet * packet) -{ - return (packet->bytes > 0 && (packet->packet[0] & 0x80) == 0x80); -} - -/* dirac */ - -static gboolean -setup_dirac_mapper (GstOggStream * pad, ogg_packet * packet) -{ - int ret; - DiracSequenceHeader header; - - ret = dirac_sequence_header_parse (&header, packet->packet + 13, - packet->bytes - 13); - if (ret == 0) { - GST_DEBUG ("Failed to parse Dirac sequence header"); - return FALSE; - } - - pad->granulerate_n = header.frame_rate_numerator * 2; - pad->granulerate_d = header.frame_rate_denominator; - pad->granuleshift = 22; - pad->n_header_packets = 1; - pad->frame_size = 2; - - if (header.interlaced_coding != 0) { - GST_DEBUG ("non-progressive Dirac coding not implemented"); - return FALSE; - } - - pad->caps = gst_caps_new_simple ("video/x-dirac", - "width", G_TYPE_INT, header.width, - "height", G_TYPE_INT, header.height, - "interlaced", G_TYPE_BOOLEAN, header.interlaced, - "pixel-aspect-ratio", GST_TYPE_FRACTION, - header.aspect_ratio_numerator, header.aspect_ratio_denominator, - "framerate", GST_TYPE_FRACTION, header.frame_rate_numerator, - header.frame_rate_denominator, NULL); - - return TRUE; -} - -#define OGG_DIRAC_GRANULE_LOW_MASK ((1<<22) - 1) -static gboolean -is_keyframe_dirac (GstOggStream * pad, gint64 granulepos) -{ - gint64 pt; - int dist_h; - int dist_l; - int dist; - int delay; - gint64 dt; - - if (granulepos == -1) - return -1; - - pt = ((granulepos >> 22) + (granulepos & OGG_DIRAC_GRANULE_LOW_MASK)) >> 9; - dist_h = (granulepos >> 22) & 0xff; - dist_l = granulepos & 0xff; - dist = (dist_h << 8) | dist_l; - delay = (granulepos >> 9) & 0x1fff; - dt = pt - delay; - - return (dist == 0); -} - -static gint64 -granulepos_to_granule_dirac (GstOggStream * pad, gint64 gp) -{ - gint64 pt; - int dist_h; - int dist_l; - int dist; - int delay; - gint64 dt; - - pt = ((gp >> 22) + (gp & OGG_DIRAC_GRANULE_LOW_MASK)) >> 9; - dist_h = (gp >> 22) & 0xff; - dist_l = gp & 0xff; - dist = (dist_h << 8) | dist_l; - delay = (gp >> 9) & 0x1fff; - dt = pt - delay; - - GST_DEBUG ("pt %" G_GINT64_FORMAT " delay %d", pt, delay); - - return dt + 4; -} - -static gint64 -granule_to_granulepos_dirac (GstOggStream * pad, gint64 granule, - gint64 keyframe_granule) -{ - /* This conversion requires knowing more details about the Dirac - * stream. */ - return -1; -} - - -/* vorbis */ - -void parse_vorbis_header_packet (GstOggStream * pad, ogg_packet * op); -void parse_vorbis_setup_packet (GstOggStream * pad, ogg_packet * op); - - -static gboolean -setup_vorbis_mapper (GstOggStream * pad, ogg_packet * packet) -{ - guint8 *data = packet->packet; - guint chans; - - data += 1 + 6 + 4; - chans = GST_READ_UINT8 (data); - data += 1; - pad->granulerate_n = GST_READ_UINT32_LE (data); - pad->granulerate_d = 1; - pad->granuleshift = 0; - pad->last_size = 0; - GST_LOG ("sample rate: %d", pad->granulerate_n); - - pad->n_header_packets = 3; - - if (pad->granulerate_n == 0) - return FALSE; - - parse_vorbis_header_packet (pad, packet); - - pad->caps = gst_caps_new_simple ("audio/x-vorbis", - "rate", G_TYPE_INT, pad->granulerate_n, "channels", G_TYPE_INT, chans, - NULL); - - return TRUE; -} - -static gboolean -is_header_vorbis (GstOggStream * pad, ogg_packet * packet) -{ - if (packet->bytes > 0 && (packet->packet[0] & 0x01) == 0) - return FALSE; - - if (packet->packet[0] == 5) { - parse_vorbis_setup_packet (pad, packet); - } - - return TRUE; -} - -static gint64 -packet_duration_vorbis (GstOggStream * pad, ogg_packet * packet) -{ - int mode; - int size; - int duration; - - if (packet->packet[0] & 1) - return 0; - - mode = (packet->packet[0] >> 1) & ((1 << pad->vorbis_log2_num_modes) - 1); - size = pad->vorbis_mode_sizes[mode] ? pad->long_size : pad->short_size; - - if (pad->last_size == 0) { - duration = 0; - } else { - duration = pad->last_size / 4 + size / 4; - } - pad->last_size = size; - - GST_DEBUG ("duration %d", (int) duration); - - return duration; -} - -/* speex */ - - -static gboolean -setup_speex_mapper (GstOggStream * pad, ogg_packet * packet) -{ - guint8 *data = packet->packet; - guint chans; - - data += 8 + 20 + 4 + 4; - pad->granulerate_n = GST_READ_UINT32_LE (data); - pad->granulerate_d = 1; - pad->granuleshift = 0; - - data += 4 + 4 + 4; - chans = GST_READ_UINT32_LE (data); - - GST_LOG ("sample rate: %d, channels: %u", pad->granulerate_n, chans); - - pad->n_header_packets = GST_READ_UINT32_LE (packet->packet + 68) + 2; - pad->frame_size = GST_READ_UINT32_LE (packet->packet + 64) * - GST_READ_UINT32_LE (packet->packet + 56); - - if (pad->granulerate_n == 0) - return FALSE; - - pad->caps = gst_caps_new_simple ("audio/x-speex", "rate", G_TYPE_INT, - pad->granulerate_n, "channels", G_TYPE_INT, chans, NULL); - - return TRUE; -} - - -/* flac */ - -static gboolean -setup_fLaC_mapper (GstOggStream * pad, ogg_packet * packet) -{ - pad->granulerate_n = 0; - pad->granulerate_d = 1; - pad->granuleshift = 0; - - pad->n_header_packets = 3; - - pad->caps = gst_caps_new_simple ("audio/x-flac", NULL); - - return TRUE; -} - -static gboolean -is_header_fLaC (GstOggStream * pad, ogg_packet * packet) -{ - if (pad->n_header_packets_seen == 1) { - pad->granulerate_n = (packet->packet[14] << 12) | - (packet->packet[15] << 4) | ((packet->packet[16] >> 4) & 0xf); - } - - if (pad->n_header_packets_seen < pad->n_header_packets) { - return TRUE; - } - - return FALSE; -} - -static gboolean -setup_flac_mapper (GstOggStream * pad, ogg_packet * packet) -{ - guint8 *data = packet->packet; - guint chans; - - /* see http://flac.sourceforge.net/ogg_mapping.html */ - - pad->granulerate_n = (GST_READ_UINT32_BE (data + 27) & 0xFFFFF000) >> 12; - pad->granulerate_d = 1; - pad->granuleshift = 0; - chans = ((GST_READ_UINT32_BE (data + 27) & 0x00000E00) >> 9) + 1; - - GST_DEBUG ("sample rate: %d, channels: %u", pad->granulerate_n, chans); - - pad->n_header_packets = GST_READ_UINT16_BE (packet->packet + 7); - - if (pad->granulerate_n == 0) - return FALSE; - - pad->caps = gst_caps_new_simple ("audio/x-flac", "rate", G_TYPE_INT, - pad->granulerate_n, "channels", G_TYPE_INT, chans, NULL); - - return TRUE; -} - -static gboolean -is_header_flac (GstOggStream * pad, ogg_packet * packet) -{ - return (packet->bytes > 0 && (packet->packet[0] != 0xff)); -} - -static gint64 -packet_duration_flac (GstOggStream * pad, ogg_packet * packet) -{ - int block_size_index; - - if (packet->bytes < 4) - return -1; - - block_size_index = packet->packet[2] >> 4; - if (block_size_index == 1) - return 192; - if (block_size_index >= 2 && block_size_index <= 5) { - return 576 << (block_size_index - 2); - } - if (block_size_index >= 8) { - return 256 << (block_size_index - 8); - } - if (block_size_index == 6 || block_size_index == 7) { - guint len, bytes = (block_size_index - 6) + 1; - guint8 tmp; - - if (packet->bytes < 4 + 1 + bytes) - return -1; - tmp = packet->packet[4]; - /* utf-8 prefix */ - len = 0; - while (tmp & 0x80) { - len++; - tmp <<= 1; - } - if (len == 2) - return -1; - if (len == 0) - len++; - if (packet->bytes < 4 + len + bytes) - return -1; - if (bytes == 1) { - return packet->packet[4 + len] + 1; - } else { - return GST_READ_UINT16_BE (packet->packet + 4 + len) + 1; - } - } - return -1; -} - -/* fishead */ - -static gboolean -setup_fishead_mapper (GstOggStream * pad, ogg_packet * packet) -{ - guint8 *data; - gint64 prestime_n, prestime_d; - gint64 basetime_n, basetime_d; - gint64 basetime; - - data = packet->packet; - - data += 8 + 2 + 2; /* header + major/minor version */ - - prestime_n = (gint64) GST_READ_UINT64_LE (data); - data += 8; - prestime_d = (gint64) GST_READ_UINT64_LE (data); - data += 8; - basetime_n = (gint64) GST_READ_UINT64_LE (data); - data += 8; - basetime_d = (gint64) GST_READ_UINT64_LE (data); - data += 8; - - /* FIXME: we don't use basetime anywhere in the demuxer! */ - if (basetime_d != 0) - basetime = gst_util_uint64_scale (GST_SECOND, basetime_n, basetime_d); - else - basetime = -1; - - GST_INFO ("skeleton fishead parsed (basetime: %" GST_TIME_FORMAT ")", - GST_TIME_ARGS (basetime)); - - return TRUE; -} - -gboolean -gst_ogg_map_add_fisbone (GstOggStream * pad, - const guint8 * data, guint size, GstClockTime * p_start_time, - guint32 * p_preroll) -{ - GstClockTime start_time; - gint64 start_granule; - guint32 preroll; - - if (size < SKELETON_FISBONE_MIN_SIZE || memcmp (data, "fisbone\0", 8) != 0) { - GST_WARNING ("invalid fisbone packet, ignoring"); - return FALSE; - } - - if (pad->have_fisbone) { - GST_DEBUG ("already have fisbone, ignoring second one"); - return FALSE; - } - - /* skip "fisbone\0" + headers offset + serialno + num headers */ - data += 8 + 4 + 4 + 4; - - pad->have_fisbone = TRUE; - - /* we just overwrite whatever was set before by the format-specific setup */ - pad->granulerate_n = GST_READ_UINT64_LE (data); - pad->granulerate_d = GST_READ_UINT64_LE (data + 8); - - start_granule = GST_READ_UINT64_LE (data + 16); - preroll = GST_READ_UINT32_LE (data + 24); - pad->granuleshift = GST_READ_UINT8 (data + 28); - - start_time = granulepos_to_granule_default (pad, start_granule); - - if (p_start_time) - *p_start_time = start_time; - - if (p_preroll) - *p_preroll = preroll; - - return TRUE; -} - -/* Do we need these for something? - * ogm->hdr.size = GST_READ_UINT32_LE (&data[13]); - * ogm->hdr.time_unit = GST_READ_UINT64_LE (&data[17]); - * ogm->hdr.samples_per_unit = GST_READ_UINT64_LE (&data[25]); - * ogm->hdr.default_len = GST_READ_UINT32_LE (&data[33]); - * ogm->hdr.buffersize = GST_READ_UINT32_LE (&data[37]); - * ogm->hdr.bits_per_sample = GST_READ_UINT32_LE (&data[41]); - */ - -static gboolean -is_header_ogm (GstOggStream * pad, ogg_packet * packet) -{ - if (packet->bytes >= 1 && (packet->packet[0] & 0x01)) - return TRUE; - - return FALSE; -} - -static gint64 -packet_duration_ogm (GstOggStream * pad, ogg_packet * packet) -{ - const guint8 *data; - int samples; - int offset; - int n; - - data = packet->packet; - offset = 1 + (((data[0] & 0xc0) >> 6) | ((data[0] & 0x02) << 1)); - - if (offset > packet->bytes) { - GST_ERROR ("buffer too small"); - return -1; - } - - samples = 0; - for (n = offset - 1; n > 0; n--) { - samples = (samples << 8) | data[n]; - } - - return samples; -} - -static gboolean -setup_ogmaudio_mapper (GstOggStream * pad, ogg_packet * packet) -{ - guint8 *data = packet->packet; - guint32 fourcc; - - pad->granulerate_n = GST_READ_UINT64_LE (data + 25); - pad->granulerate_d = 1; - - fourcc = GST_READ_UINT32_LE (data + 9); - GST_DEBUG ("fourcc: %" GST_FOURCC_FORMAT, GST_FOURCC_ARGS (fourcc)); - - pad->caps = gst_riff_create_audio_caps (fourcc, NULL, NULL, NULL, NULL, NULL); - - GST_LOG ("sample rate: %d", pad->granulerate_n); - if (pad->granulerate_n == 0) - return FALSE; - - if (pad->caps) { - gst_caps_set_simple (pad->caps, - "rate", G_TYPE_INT, pad->granulerate_n, NULL); - } else { - pad->caps = gst_caps_new_simple ("audio/x-ogm-unknown", - "fourcc", GST_TYPE_FOURCC, fourcc, - "rate", G_TYPE_INT, pad->granulerate_n, NULL); - } - - pad->n_header_packets = 1; - pad->is_ogm = TRUE; - - return TRUE; -} - -static gboolean -setup_ogmvideo_mapper (GstOggStream * pad, ogg_packet * packet) -{ - guint8 *data = packet->packet; - guint32 fourcc; - int width, height; - gint64 time_unit; - - GST_DEBUG ("time unit %d", GST_READ_UINT32_LE (data + 16)); - GST_DEBUG ("samples per unit %d", GST_READ_UINT32_LE (data + 24)); - - pad->granulerate_n = 10000000; - time_unit = GST_READ_UINT64_LE (data + 17); - if (time_unit > G_MAXINT || time_unit < G_MININT) { - GST_WARNING ("timeunit is out of range"); - } - pad->granulerate_d = (gint) CLAMP (time_unit, G_MININT, G_MAXINT); - - GST_LOG ("fps = %d/%d = %.3f", - pad->granulerate_n, pad->granulerate_d, - (double) pad->granulerate_n / pad->granulerate_d); - - fourcc = GST_READ_UINT32_LE (data + 9); - width = GST_READ_UINT32_LE (data + 45); - height = GST_READ_UINT32_LE (data + 49); - GST_DEBUG ("fourcc: %" GST_FOURCC_FORMAT, GST_FOURCC_ARGS (fourcc)); - - pad->caps = gst_riff_create_video_caps (fourcc, NULL, NULL, NULL, NULL, NULL); - - if (pad->caps == NULL) { - pad->caps = gst_caps_new_simple ("video/x-ogm-unknown", - "fourcc", GST_TYPE_FOURCC, fourcc, - "framerate", GST_TYPE_FRACTION, pad->granulerate_n, - pad->granulerate_d, NULL); - } else { - gst_caps_set_simple (pad->caps, - "framerate", GST_TYPE_FRACTION, pad->granulerate_n, - pad->granulerate_d, - "width", G_TYPE_INT, width, "height", G_TYPE_INT, height, NULL); - } - GST_DEBUG ("caps: %" GST_PTR_FORMAT, pad->caps); - - pad->n_header_packets = 1; - pad->frame_size = 1; - pad->is_ogm = TRUE; - - return TRUE; -} - -static gboolean -setup_ogmtext_mapper (GstOggStream * pad, ogg_packet * packet) -{ - guint8 *data = packet->packet; - gint64 time_unit; - - pad->granulerate_n = 10000000; - time_unit = GST_READ_UINT64_LE (data + 17); - if (time_unit > G_MAXINT || time_unit < G_MININT) { - GST_WARNING ("timeunit is out of range"); - } - pad->granulerate_d = (gint) CLAMP (time_unit, G_MININT, G_MAXINT); - - GST_LOG ("fps = %d/%d = %.3f", - pad->granulerate_n, pad->granulerate_d, - (double) pad->granulerate_n / pad->granulerate_d); - - if (pad->granulerate_d <= 0) - return FALSE; - - pad->caps = gst_caps_new_simple ("text/plain", NULL); - - pad->n_header_packets = 1; - pad->is_ogm = TRUE; - pad->is_ogm_text = TRUE; - - return TRUE; -} - -/* PCM */ - -#define OGGPCM_FMT_S8 0x00000000 /* Signed integer 8 bit */ -#define OGGPCM_FMT_U8 0x00000001 /* Unsigned integer 8 bit */ -#define OGGPCM_FMT_S16_LE 0x00000002 /* Signed integer 16 bit little endian */ -#define OGGPCM_FMT_S16_BE 0x00000003 /* Signed integer 16 bit big endian */ -#define OGGPCM_FMT_S24_LE 0x00000004 /* Signed integer 24 bit little endian */ -#define OGGPCM_FMT_S24_BE 0x00000005 /* Signed integer 24 bit big endian */ -#define OGGPCM_FMT_S32_LE 0x00000006 /* Signed integer 32 bit little endian */ -#define OGGPCM_FMT_S32_BE 0x00000007 /* Signed integer 32 bit big endian */ - -#define OGGPCM_FMT_ULAW 0x00000010 /* G.711 u-law encoding (8 bit) */ -#define OGGPCM_FMT_ALAW 0x00000011 /* G.711 A-law encoding (8 bit) */ - -#define OGGPCM_FMT_FLT32_LE 0x00000020 /* IEEE Float [-1,1] 32 bit little endian */ -#define OGGPCM_FMT_FLT32_BE 0x00000021 /* IEEE Float [-1,1] 32 bit big endian */ -#define OGGPCM_FMT_FLT64_LE 0x00000022 /* IEEE Float [-1,1] 64 bit little endian */ -#define OGGPCM_FMT_FLT64_BE 0x00000023 /* IEEE Float [-1,1] 64 bit big endian */ - - -static gboolean -setup_pcm_mapper (GstOggStream * pad, ogg_packet * packet) -{ - guint8 *data = packet->packet; - int format; - int channels; - GstCaps *caps; - - pad->granulerate_n = GST_READ_UINT32_LE (data + 16); - pad->granulerate_d = 1; - GST_LOG ("sample rate: %d", pad->granulerate_n); - - format = GST_READ_UINT32_LE (data + 12); - channels = GST_READ_UINT8 (data + 21); - - pad->n_header_packets = 2 + GST_READ_UINT32_LE (data + 24); - - if (pad->granulerate_n == 0) - return FALSE; - - switch (format) { - case OGGPCM_FMT_S8: - caps = gst_caps_new_simple ("audio/x-raw-int", - "depth", G_TYPE_INT, 8, - "width", G_TYPE_INT, 8, "signed", G_TYPE_BOOLEAN, TRUE, NULL); - break; - case OGGPCM_FMT_U8: - caps = gst_caps_new_simple ("audio/x-raw-int", - "depth", G_TYPE_INT, 8, - "width", G_TYPE_INT, 8, "signed", G_TYPE_BOOLEAN, FALSE, NULL); - break; - case OGGPCM_FMT_S16_LE: - caps = gst_caps_new_simple ("audio/x-raw-int", - "depth", G_TYPE_INT, 16, - "width", G_TYPE_INT, 16, - "endianness", G_TYPE_INT, G_LITTLE_ENDIAN, - "signed", G_TYPE_BOOLEAN, TRUE, NULL); - break; - case OGGPCM_FMT_S16_BE: - caps = gst_caps_new_simple ("audio/x-raw-int", - "depth", G_TYPE_INT, 16, - "width", G_TYPE_INT, 16, - "endianness", G_TYPE_INT, G_BIG_ENDIAN, - "signed", G_TYPE_BOOLEAN, TRUE, NULL); - break; - case OGGPCM_FMT_S24_LE: - caps = gst_caps_new_simple ("audio/x-raw-int", - "depth", G_TYPE_INT, 24, - "width", G_TYPE_INT, 24, - "endianness", G_TYPE_INT, G_LITTLE_ENDIAN, - "signed", G_TYPE_BOOLEAN, TRUE, NULL); - break; - case OGGPCM_FMT_S24_BE: - caps = gst_caps_new_simple ("audio/x-raw-int", - "depth", G_TYPE_INT, 24, - "width", G_TYPE_INT, 24, - "endianness", G_TYPE_INT, G_BIG_ENDIAN, - "signed", G_TYPE_BOOLEAN, TRUE, NULL); - break; - case OGGPCM_FMT_S32_LE: - caps = gst_caps_new_simple ("audio/x-raw-int", - "depth", G_TYPE_INT, 32, - "width", G_TYPE_INT, 32, - "endianness", G_TYPE_INT, G_LITTLE_ENDIAN, - "signed", G_TYPE_BOOLEAN, TRUE, NULL); - break; - case OGGPCM_FMT_S32_BE: - caps = gst_caps_new_simple ("audio/x-raw-int", - "depth", G_TYPE_INT, 32, - "width", G_TYPE_INT, 32, - "endianness", G_TYPE_INT, G_BIG_ENDIAN, - "signed", G_TYPE_BOOLEAN, TRUE, NULL); - break; - case OGGPCM_FMT_ULAW: - caps = gst_caps_new_simple ("audio/x-mulaw", NULL); - break; - case OGGPCM_FMT_ALAW: - caps = gst_caps_new_simple ("audio/x-alaw", NULL); - break; - case OGGPCM_FMT_FLT32_LE: - caps = gst_caps_new_simple ("audio/x-raw-float", - "width", G_TYPE_INT, 32, - "endianness", G_TYPE_INT, G_LITTLE_ENDIAN, NULL); - break; - case OGGPCM_FMT_FLT32_BE: - caps = gst_caps_new_simple ("audio/x-raw-float", - "width", G_TYPE_INT, 32, - "endianness", G_TYPE_INT, G_BIG_ENDIAN, NULL); - break; - case OGGPCM_FMT_FLT64_LE: - caps = gst_caps_new_simple ("audio/x-raw-float", - "width", G_TYPE_INT, 64, - "endianness", G_TYPE_INT, G_LITTLE_ENDIAN, NULL); - break; - case OGGPCM_FMT_FLT64_BE: - caps = gst_caps_new_simple ("audio/x-raw-float", - "width", G_TYPE_INT, 64, - "endianness", G_TYPE_INT, G_BIG_ENDIAN, NULL); - break; - default: - return FALSE; - } - - gst_caps_set_simple (caps, "audio/x-raw-int", - "rate", G_TYPE_INT, pad->granulerate_n, - "channels", G_TYPE_INT, channels, NULL); - pad->caps = caps; - - return TRUE; -} - -/* cmml */ - -static gboolean -setup_cmml_mapper (GstOggStream * pad, ogg_packet * packet) -{ - guint8 *data = packet->packet; - - pad->granulerate_n = GST_READ_UINT64_LE (data + 12); - pad->granulerate_d = GST_READ_UINT64_LE (data + 20); - pad->granuleshift = data[28]; - GST_LOG ("sample rate: %d", pad->granulerate_n); - - pad->n_header_packets = 3; - - if (pad->granulerate_n == 0) - return FALSE; - - data += 4 + (4 + 4 + 4); - GST_DEBUG ("blocksize0: %u", 1 << (data[0] >> 4)); - GST_DEBUG ("blocksize1: %u", 1 << (data[0] & 0x0F)); - - pad->caps = gst_caps_new_simple ("text/x-cmml", NULL); - - return TRUE; -} - -/* celt */ - -static gboolean -setup_celt_mapper (GstOggStream * pad, ogg_packet * packet) -{ - guint8 *data = packet->packet; - - pad->granulerate_n = GST_READ_UINT32_LE (data + 36); - pad->granulerate_d = 1; - pad->granuleshift = 0; - GST_LOG ("sample rate: %d", pad->granulerate_n); - - pad->frame_size = GST_READ_UINT32_LE (packet->packet + 44); - pad->n_header_packets = GST_READ_UINT32_LE (packet->packet + 56) + 2; - - if (pad->granulerate_n == 0) - return FALSE; - - pad->caps = gst_caps_new_simple ("audio/x-celt", - "rate", G_TYPE_INT, pad->granulerate_n, NULL); - - return TRUE; -} - -/* kate */ - -static gboolean -setup_kate_mapper (GstOggStream * pad, ogg_packet * packet) -{ - guint8 *data = packet->packet; - const char *category; - - if (packet->bytes < 64) - return FALSE; - - pad->granulerate_n = GST_READ_UINT32_LE (data + 24); - pad->granulerate_d = GST_READ_UINT32_LE (data + 28); - pad->granuleshift = GST_READ_UINT8 (data + 15); - GST_LOG ("sample rate: %d", pad->granulerate_n); - - pad->n_header_packets = GST_READ_UINT8 (data + 11); - - if (pad->granulerate_n == 0) - return FALSE; - - category = (const char *) data + 48; - if (strcmp (category, "subtitles") == 0 || strcmp (category, "SUB") == 0 || - strcmp (category, "spu-subtitles") == 0 || - strcmp (category, "K-SPU") == 0) { - pad->caps = gst_caps_new_simple ("subtitle/x-kate", NULL); - } else { - pad->caps = gst_caps_new_simple ("application/x-kate", NULL); - } - - return TRUE; -} - - -/* *INDENT-OFF* */ -/* indent hates our freedoms */ -static const GstOggMap mappers[] = { - { - "\200theora", 7, 42, - "video/x-theora", - setup_theora_mapper, - granulepos_to_granule_theora, - granule_to_granulepos_default, - is_keyframe_theora, - is_header_theora, - packet_duration_constant - }, - { - "\001vorbis", 7, 22, - "audio/x-vorbis", - setup_vorbis_mapper, - granulepos_to_granule_default, - granule_to_granulepos_default, - is_keyframe_true, - is_header_vorbis, - packet_duration_vorbis - }, - { - "Speex", 5, 80, - "audio/x-speex", - setup_speex_mapper, - granulepos_to_granule_default, - granule_to_granulepos_default, - is_keyframe_true, - is_header_count, - packet_duration_constant - }, - { - "PCM ", 8, 0, - "audio/x-raw-int", - setup_pcm_mapper, - NULL, - NULL, - NULL, - is_header_count, - NULL - }, - { - "CMML\0\0\0\0", 8, 0, - "text/x-cmml", - setup_cmml_mapper, - NULL, - NULL, - NULL, - is_header_count, - NULL - }, - { - "Annodex", 7, 0, - "application/x-annodex", - setup_fishead_mapper, - granulepos_to_granule_default, - granule_to_granulepos_default, - NULL, - is_header_count, - NULL - }, - { - "fishead", 7, 64, - "application/octet-stream", - setup_fishead_mapper, - NULL, - NULL, - NULL, - is_header_true, - NULL - }, - { - "fLaC", 4, 0, - "audio/x-flac", - setup_fLaC_mapper, - granulepos_to_granule_default, - granule_to_granulepos_default, - is_keyframe_true, - is_header_fLaC, - NULL - }, - { - "\177FLAC", 5, 36, - "audio/x-flac", - setup_flac_mapper, - granulepos_to_granule_default, - granule_to_granulepos_default, - is_keyframe_true, - is_header_flac, - packet_duration_flac - }, - { - "AnxData", 7, 0, - "application/octet-stream", - NULL, - NULL, - NULL, - NULL, - NULL, - }, - { - "CELT ", 8, 0, - "audio/x-celt", - setup_celt_mapper, - granulepos_to_granule_default, - granule_to_granulepos_default, - NULL, - is_header_count, - packet_duration_constant - }, - { - "\200kate\0\0\0", 8, 0, - "text/x-kate", - setup_kate_mapper, - granulepos_to_granule_default, - granule_to_granulepos_default, - NULL, - is_header_count, - NULL - }, - { - "BBCD\0", 5, 13, - "video/x-dirac", - setup_dirac_mapper, - granulepos_to_granule_dirac, - granule_to_granulepos_dirac, - is_keyframe_dirac, - is_header_count, - packet_duration_constant - }, - { - "\001audio\0\0\0", 9, 53, - "application/x-ogm-audio", - setup_ogmaudio_mapper, - granulepos_to_granule_default, - granule_to_granulepos_default, - is_keyframe_true, - is_header_ogm, - packet_duration_ogm - }, - { - "\001video\0\0\0", 9, 53, - "application/x-ogm-video", - setup_ogmvideo_mapper, - granulepos_to_granule_default, - granule_to_granulepos_default, - NULL, - is_header_ogm, - packet_duration_constant - }, - { - "\001text\0\0\0", 9, 9, - "application/x-ogm-text", - setup_ogmtext_mapper, - granulepos_to_granule_default, - granule_to_granulepos_default, - is_keyframe_true, - is_header_ogm, - packet_duration_ogm - } -}; -/* *INDENT-ON* */ - -gboolean -gst_ogg_stream_setup_map (GstOggStream * pad, ogg_packet * packet) -{ - int i; - gboolean ret; - - for (i = 0; i < G_N_ELEMENTS (mappers); i++) { - if (packet->bytes >= mappers[i].min_packet_size && - packet->bytes >= mappers[i].id_length && - memcmp (packet->packet, mappers[i].id, mappers[i].id_length) == 0) { - - GST_DEBUG ("found mapper for '%s'", mappers[i].id); - - if (mappers[i].setup_func) - ret = mappers[i].setup_func (pad, packet); - else - continue; - - if (ret) { - GST_DEBUG ("got stream type %" GST_PTR_FORMAT, pad->caps); - pad->map = i; - return TRUE; - } else { - GST_WARNING ("mapper '%s' did not accept setup header", - mappers[i].media_type); - } - } - } - - return FALSE; -} |