X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Ftags%2Fsynfig_0_61_03%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavformat%2Fmpegtsenc.c;fp=synfig-core%2Ftags%2Fsynfig_0_61_03%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavformat%2Fmpegtsenc.c;h=0000000000000000000000000000000000000000;hb=6fa8f2f38d4b0b35f8539bf94e27ae27015c7689;hp=e4d7f3d7b85e9a94b31ff15386ffc3c4ba238a7d;hpb=47fce282611fbba1044921d22ca887f9b53ad91a;p=synfig.git diff --git a/synfig-core/tags/synfig_0_61_03/synfig-core/src/modules/mod_libavcodec/libavformat/mpegtsenc.c b/synfig-core/tags/synfig_0_61_03/synfig-core/src/modules/mod_libavcodec/libavformat/mpegtsenc.c deleted file mode 100644 index e4d7f3d..0000000 --- a/synfig-core/tags/synfig_0_61_03/synfig-core/src/modules/mod_libavcodec/libavformat/mpegtsenc.c +++ /dev/null @@ -1,610 +0,0 @@ -/* - * MPEG2 transport stream (aka DVB) mux - * Copyright (c) 2003 Fabrice Bellard. - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser 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 - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser 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 - */ -#include "avformat.h" - -#include "mpegts.h" - -/* write DVB SI sections */ - -static const uint32_t crc_table[256] = { - 0x00000000, 0x04c11db7, 0x09823b6e, 0x0d4326d9, 0x130476dc, 0x17c56b6b, - 0x1a864db2, 0x1e475005, 0x2608edb8, 0x22c9f00f, 0x2f8ad6d6, 0x2b4bcb61, - 0x350c9b64, 0x31cd86d3, 0x3c8ea00a, 0x384fbdbd, 0x4c11db70, 0x48d0c6c7, - 0x4593e01e, 0x4152fda9, 0x5f15adac, 0x5bd4b01b, 0x569796c2, 0x52568b75, - 0x6a1936c8, 0x6ed82b7f, 0x639b0da6, 0x675a1011, 0x791d4014, 0x7ddc5da3, - 0x709f7b7a, 0x745e66cd, 0x9823b6e0, 0x9ce2ab57, 0x91a18d8e, 0x95609039, - 0x8b27c03c, 0x8fe6dd8b, 0x82a5fb52, 0x8664e6e5, 0xbe2b5b58, 0xbaea46ef, - 0xb7a96036, 0xb3687d81, 0xad2f2d84, 0xa9ee3033, 0xa4ad16ea, 0xa06c0b5d, - 0xd4326d90, 0xd0f37027, 0xddb056fe, 0xd9714b49, 0xc7361b4c, 0xc3f706fb, - 0xceb42022, 0xca753d95, 0xf23a8028, 0xf6fb9d9f, 0xfbb8bb46, 0xff79a6f1, - 0xe13ef6f4, 0xe5ffeb43, 0xe8bccd9a, 0xec7dd02d, 0x34867077, 0x30476dc0, - 0x3d044b19, 0x39c556ae, 0x278206ab, 0x23431b1c, 0x2e003dc5, 0x2ac12072, - 0x128e9dcf, 0x164f8078, 0x1b0ca6a1, 0x1fcdbb16, 0x018aeb13, 0x054bf6a4, - 0x0808d07d, 0x0cc9cdca, 0x7897ab07, 0x7c56b6b0, 0x71159069, 0x75d48dde, - 0x6b93dddb, 0x6f52c06c, 0x6211e6b5, 0x66d0fb02, 0x5e9f46bf, 0x5a5e5b08, - 0x571d7dd1, 0x53dc6066, 0x4d9b3063, 0x495a2dd4, 0x44190b0d, 0x40d816ba, - 0xaca5c697, 0xa864db20, 0xa527fdf9, 0xa1e6e04e, 0xbfa1b04b, 0xbb60adfc, - 0xb6238b25, 0xb2e29692, 0x8aad2b2f, 0x8e6c3698, 0x832f1041, 0x87ee0df6, - 0x99a95df3, 0x9d684044, 0x902b669d, 0x94ea7b2a, 0xe0b41de7, 0xe4750050, - 0xe9362689, 0xedf73b3e, 0xf3b06b3b, 0xf771768c, 0xfa325055, 0xfef34de2, - 0xc6bcf05f, 0xc27dede8, 0xcf3ecb31, 0xcbffd686, 0xd5b88683, 0xd1799b34, - 0xdc3abded, 0xd8fba05a, 0x690ce0ee, 0x6dcdfd59, 0x608edb80, 0x644fc637, - 0x7a089632, 0x7ec98b85, 0x738aad5c, 0x774bb0eb, 0x4f040d56, 0x4bc510e1, - 0x46863638, 0x42472b8f, 0x5c007b8a, 0x58c1663d, 0x558240e4, 0x51435d53, - 0x251d3b9e, 0x21dc2629, 0x2c9f00f0, 0x285e1d47, 0x36194d42, 0x32d850f5, - 0x3f9b762c, 0x3b5a6b9b, 0x0315d626, 0x07d4cb91, 0x0a97ed48, 0x0e56f0ff, - 0x1011a0fa, 0x14d0bd4d, 0x19939b94, 0x1d528623, 0xf12f560e, 0xf5ee4bb9, - 0xf8ad6d60, 0xfc6c70d7, 0xe22b20d2, 0xe6ea3d65, 0xeba91bbc, 0xef68060b, - 0xd727bbb6, 0xd3e6a601, 0xdea580d8, 0xda649d6f, 0xc423cd6a, 0xc0e2d0dd, - 0xcda1f604, 0xc960ebb3, 0xbd3e8d7e, 0xb9ff90c9, 0xb4bcb610, 0xb07daba7, - 0xae3afba2, 0xaafbe615, 0xa7b8c0cc, 0xa379dd7b, 0x9b3660c6, 0x9ff77d71, - 0x92b45ba8, 0x9675461f, 0x8832161a, 0x8cf30bad, 0x81b02d74, 0x857130c3, - 0x5d8a9099, 0x594b8d2e, 0x5408abf7, 0x50c9b640, 0x4e8ee645, 0x4a4ffbf2, - 0x470cdd2b, 0x43cdc09c, 0x7b827d21, 0x7f436096, 0x7200464f, 0x76c15bf8, - 0x68860bfd, 0x6c47164a, 0x61043093, 0x65c52d24, 0x119b4be9, 0x155a565e, - 0x18197087, 0x1cd86d30, 0x029f3d35, 0x065e2082, 0x0b1d065b, 0x0fdc1bec, - 0x3793a651, 0x3352bbe6, 0x3e119d3f, 0x3ad08088, 0x2497d08d, 0x2056cd3a, - 0x2d15ebe3, 0x29d4f654, 0xc5a92679, 0xc1683bce, 0xcc2b1d17, 0xc8ea00a0, - 0xd6ad50a5, 0xd26c4d12, 0xdf2f6bcb, 0xdbee767c, 0xe3a1cbc1, 0xe760d676, - 0xea23f0af, 0xeee2ed18, 0xf0a5bd1d, 0xf464a0aa, 0xf9278673, 0xfde69bc4, - 0x89b8fd09, 0x8d79e0be, 0x803ac667, 0x84fbdbd0, 0x9abc8bd5, 0x9e7d9662, - 0x933eb0bb, 0x97ffad0c, 0xafb010b1, 0xab710d06, 0xa6322bdf, 0xa2f33668, - 0xbcb4666d, 0xb8757bda, 0xb5365d03, 0xb1f740b4 -}; - -unsigned int mpegts_crc32(const uint8_t *data, int len) -{ - register int i; - unsigned int crc = 0xffffffff; - - for (i=0; i> 24) ^ *data++) & 0xff]; - - return crc; -} - -/*********************************************/ -/* mpegts section writer */ - -typedef struct MpegTSSection { - int pid; - int cc; - void (*write_packet)(struct MpegTSSection *s, const uint8_t *packet); - void *opaque; -} MpegTSSection; - -/* NOTE: 4 bytes must be left at the end for the crc32 */ -void mpegts_write_section(MpegTSSection *s, uint8_t *buf, int len) -{ - unsigned int crc; - unsigned char packet[TS_PACKET_SIZE]; - const unsigned char *buf_ptr; - unsigned char *q; - int first, b, len1, left; - - crc = mpegts_crc32(buf, len - 4); - buf[len - 4] = (crc >> 24) & 0xff; - buf[len - 3] = (crc >> 16) & 0xff; - buf[len - 2] = (crc >> 8) & 0xff; - buf[len - 1] = (crc) & 0xff; - - /* send each packet */ - buf_ptr = buf; - while (len > 0) { - first = (buf == buf_ptr); - q = packet; - *q++ = 0x47; - b = (s->pid >> 8); - if (first) - b |= 0x40; - *q++ = b; - *q++ = s->pid; - s->cc = (s->cc + 1) & 0xf; - *q++ = 0x10 | s->cc; - if (first) - *q++ = 0; /* 0 offset */ - len1 = TS_PACKET_SIZE - (q - packet); - if (len1 > len) - len1 = len; - memcpy(q, buf_ptr, len1); - q += len1; - /* add known padding data */ - left = TS_PACKET_SIZE - (q - packet); - if (left > 0) - memset(q, 0xff, left); - - s->write_packet(s, packet); - - buf_ptr += len1; - len -= len1; - } -} - -static inline void put16(uint8_t **q_ptr, int val) -{ - uint8_t *q; - q = *q_ptr; - *q++ = val >> 8; - *q++ = val; - *q_ptr = q; -} - -int mpegts_write_section1(MpegTSSection *s, int tid, int id, - int version, int sec_num, int last_sec_num, - uint8_t *buf, int len) -{ - uint8_t section[1024], *q; - unsigned int tot_len; - - tot_len = 3 + 5 + len + 4; - /* check if not too big */ - if (tot_len > 1024) - return -1; - - q = section; - *q++ = tid; - put16(&q, 0xb000 | (len + 5 + 4)); /* 5 byte header + 4 byte CRC */ - put16(&q, id); - *q++ = 0xc1 | (version << 1); /* current_next_indicator = 1 */ - *q++ = sec_num; - *q++ = last_sec_num; - memcpy(q, buf, len); - - mpegts_write_section(s, section, tot_len); - return 0; -} - -/*********************************************/ -/* mpegts writer */ - -#define DEFAULT_PMT_START_PID 0x1000 -#define DEFAULT_START_PID 0x0100 -#define DEFAULT_PROVIDER_NAME "FFmpeg" -#define DEFAULT_SERVICE_NAME "Service01" - -/* default network id, transport stream and service identifiers */ -#define DEFAULT_ONID 0x0001 -#define DEFAULT_TSID 0x0001 -#define DEFAULT_SID 0x0001 - -/* a PES packet header is generated every DEFAULT_PES_HEADER_FREQ packets */ -#define DEFAULT_PES_HEADER_FREQ 16 -#define DEFAULT_PES_PAYLOAD_SIZE ((DEFAULT_PES_HEADER_FREQ - 1) * 184 + 170) - -/* we retransmit the SI info at this rate */ -#define SDT_RETRANS_TIME 500 -#define PAT_RETRANS_TIME 100 - -typedef struct MpegTSWriteStream { - int pid; /* stream associated pid */ - int cc; - int payload_index; - int64_t payload_pts; - uint8_t payload[DEFAULT_PES_PAYLOAD_SIZE]; -} MpegTSWriteStream; - -typedef struct MpegTSService { - MpegTSSection pmt; /* MPEG2 pmt table context */ - int pcr_pid; - int sid; /* service ID */ - char *name; - char *provider_name; -} MpegTSService; - -typedef struct MpegTSWrite { - MpegTSSection pat; /* MPEG2 pat table */ - MpegTSSection sdt; /* MPEG2 sdt table context */ - MpegTSService **services; - int sdt_packet_count; - int sdt_packet_freq; - int pat_packet_count; - int pat_packet_freq; - int nb_services; - int onid; - int tsid; -} MpegTSWrite; - -static void mpegts_write_pat(AVFormatContext *s) -{ - MpegTSWrite *ts = s->priv_data; - MpegTSService *service; - uint8_t data[1012], *q; - int i; - - q = data; - for(i = 0; i < ts->nb_services; i++) { - service = ts->services[i]; - put16(&q, service->sid); - put16(&q, 0xe000 | service->pmt.pid); - } - mpegts_write_section1(&ts->pat, PAT_TID, ts->tsid, 0, 0, 0, - data, q - data); -} - -static void mpegts_write_pmt(AVFormatContext *s, MpegTSService *service) -{ - // MpegTSWrite *ts = s->priv_data; - uint8_t data[1012], *q, *desc_length_ptr, *program_info_length_ptr; - int val, stream_type, i; - - q = data; - put16(&q, 0xe000 | service->pcr_pid); - - program_info_length_ptr = q; - q += 2; /* patched after */ - - /* put program info here */ - - val = 0xf000 | (q - program_info_length_ptr - 2); - program_info_length_ptr[0] = val >> 8; - program_info_length_ptr[1] = val; - - for(i = 0; i < s->nb_streams; i++) { - AVStream *st = s->streams[i]; - MpegTSWriteStream *ts_st = st->priv_data; - switch(st->codec.codec_type) { - case CODEC_TYPE_VIDEO: - stream_type = STREAM_TYPE_VIDEO_MPEG2; //XXX/FIXME is this (and the define) correct? - break; - case CODEC_TYPE_AUDIO: - stream_type = STREAM_TYPE_AUDIO_MPEG1; - break; - default: - stream_type = STREAM_TYPE_PRIVATE_DATA; - break; - } - *q++ = stream_type; - put16(&q, 0xe000 | ts_st->pid); - desc_length_ptr = q; - q += 2; /* patched after */ - - /* write optional descriptors here */ - - val = 0xf000 | (q - desc_length_ptr - 2); - desc_length_ptr[0] = val >> 8; - desc_length_ptr[1] = val; - } - mpegts_write_section1(&service->pmt, PMT_TID, service->sid, 0, 0, 0, - data, q - data); -} - -/* NOTE: str == NULL is accepted for an empty string */ -static void putstr8(uint8_t **q_ptr, const char *str) -{ - uint8_t *q; - int len; - - q = *q_ptr; - if (!str) - len = 0; - else - len = strlen(str); - *q++ = len; - memcpy(q, str, len); - q += len; - *q_ptr = q; -} - -static void mpegts_write_sdt(AVFormatContext *s) -{ - MpegTSWrite *ts = s->priv_data; - MpegTSService *service; - uint8_t data[1012], *q, *desc_list_len_ptr, *desc_len_ptr; - int i, running_status, free_ca_mode, val; - - q = data; - put16(&q, ts->onid); - *q++ = 0xff; - for(i = 0; i < ts->nb_services; i++) { - service = ts->services[i]; - put16(&q, service->sid); - *q++ = 0xfc | 0x00; /* currently no EIT info */ - desc_list_len_ptr = q; - q += 2; - running_status = 4; /* running */ - free_ca_mode = 0; - - /* write only one descriptor for the service name and provider */ - *q++ = 0x48; - desc_len_ptr = q; - q++; - *q++ = 0x01; /* digital television service */ - putstr8(&q, service->provider_name); - putstr8(&q, service->name); - desc_len_ptr[0] = q - desc_len_ptr - 1; - - /* fill descriptor length */ - val = (running_status << 13) | (free_ca_mode << 12) | - (q - desc_list_len_ptr - 2); - desc_list_len_ptr[0] = val >> 8; - desc_list_len_ptr[1] = val; - } - mpegts_write_section1(&ts->sdt, SDT_TID, ts->tsid, 0, 0, 0, - data, q - data); -} - -static MpegTSService *mpegts_add_service(MpegTSWrite *ts, - int sid, - const char *provider_name, - const char *name) -{ - MpegTSService *service; - - service = av_mallocz(sizeof(MpegTSService)); - if (!service) - return NULL; - service->pmt.pid = DEFAULT_PMT_START_PID + ts->nb_services - 1; - service->sid = sid; - service->provider_name = av_strdup(provider_name); - service->name = av_strdup(name); - service->pcr_pid = 0x1fff; - dynarray_add(&ts->services, &ts->nb_services, service); - return service; -} - -static void section_write_packet(MpegTSSection *s, const uint8_t *packet) -{ - AVFormatContext *ctx = s->opaque; - put_buffer(&ctx->pb, packet, TS_PACKET_SIZE); -} - -static int mpegts_write_header(AVFormatContext *s) -{ - MpegTSWrite *ts = s->priv_data; - MpegTSWriteStream *ts_st; - MpegTSService *service; - AVStream *st; - int i, total_bit_rate; - - ts->tsid = DEFAULT_TSID; - ts->onid = DEFAULT_ONID; - /* allocate a single DVB service */ - service = mpegts_add_service(ts, DEFAULT_SID, - DEFAULT_PROVIDER_NAME, DEFAULT_SERVICE_NAME); - service->pmt.write_packet = section_write_packet; - service->pmt.opaque = s; - - ts->pat.pid = PAT_PID; - ts->pat.cc = 0; - ts->pat.write_packet = section_write_packet; - ts->pat.opaque = s; - - ts->sdt.pid = SDT_PID; - ts->sdt.cc = 0; - ts->sdt.write_packet = section_write_packet; - ts->sdt.opaque = s; - - /* assign pids to each stream */ - total_bit_rate = 0; - for(i = 0;i < s->nb_streams; i++) { - st = s->streams[i]; - ts_st = av_mallocz(sizeof(MpegTSWriteStream)); - if (!ts_st) - goto fail; - st->priv_data = ts_st; - ts_st->pid = DEFAULT_START_PID + i; - ts_st->payload_pts = AV_NOPTS_VALUE; - /* update PCR pid if needed */ - if (st->codec.codec_type == CODEC_TYPE_VIDEO && - service->pcr_pid == 0x1fff) - service->pcr_pid = ts_st->pid; - total_bit_rate += st->codec.bit_rate; - } - if (total_bit_rate <= 8 * 1024) - total_bit_rate = 8 * 1024; - ts->sdt_packet_freq = (total_bit_rate * SDT_RETRANS_TIME) / - (TS_PACKET_SIZE * 8 * 1000); - ts->pat_packet_freq = (total_bit_rate * PAT_RETRANS_TIME) / - (TS_PACKET_SIZE * 8 * 1000); -#if 0 - printf("%d %d %d\n", - total_bit_rate, ts->sdt_packet_freq, ts->pat_packet_freq); -#endif - - /* write info at the start of the file, so that it will be fast to - find them */ - mpegts_write_sdt(s); - mpegts_write_pat(s); - for(i = 0; i < ts->nb_services; i++) { - mpegts_write_pmt(s, ts->services[i]); - } - put_flush_packet(&s->pb); - - return 0; - - fail: - for(i = 0;i < s->nb_streams; i++) { - st = s->streams[i]; - av_free(st->priv_data); - } - return -1; -} - -/* send SDT, PAT and PMT tables regulary */ -static void retransmit_si_info(AVFormatContext *s) -{ - MpegTSWrite *ts = s->priv_data; - int i; - - if (++ts->sdt_packet_count == ts->sdt_packet_freq) { - ts->sdt_packet_count = 0; - mpegts_write_sdt(s); - } - if (++ts->pat_packet_count == ts->pat_packet_freq) { - ts->pat_packet_count = 0; - mpegts_write_pat(s); - for(i = 0; i < ts->nb_services; i++) { - mpegts_write_pmt(s, ts->services[i]); - } - } -} - -/* NOTE: pes_data contains all the PES packet */ -static void mpegts_write_pes(AVFormatContext *s, AVStream *st, - const uint8_t *payload, int payload_size, - int64_t pts) -{ - MpegTSWriteStream *ts_st = st->priv_data; - uint8_t buf[TS_PACKET_SIZE]; - uint8_t *q; - int val, is_start, len, ts_len, header_len; - - is_start = 1; - while (payload_size > 0) { - retransmit_si_info(s); - - /* prepare packet header */ - q = buf; - *q++ = 0x47; - val = (ts_st->pid >> 8); - if (is_start) - val |= 0x40; - *q++ = val; - *q++ = ts_st->pid; - *q++ = 0x10 | ts_st->cc; - ts_st->cc = (ts_st->cc + 1) & 0xf; - if (is_start) { - /* write PES header */ - *q++ = 0x00; - *q++ = 0x00; - *q++ = 0x01; - if (st->codec.codec_type == CODEC_TYPE_VIDEO) - *q++ = 0xe0; - else - *q++ = 0xc0; - if (pts != AV_NOPTS_VALUE) - header_len = 8; - else - header_len = 3; - len = payload_size + header_len; - *q++ = len >> 8; - *q++ = len; - *q++ = 0x80; - if (pts != AV_NOPTS_VALUE) { - *q++ = 0x80; /* PTS only */ - *q++ = 0x05; /* header len */ - val = (0x02 << 4) | - (((pts >> 30) & 0x07) << 1) | 1; - *q++ = val; - val = (((pts >> 15) & 0x7fff) << 1) | 1; - *q++ = val >> 8; - *q++ = val; - val = (((pts) & 0x7fff) << 1) | 1; - *q++ = val >> 8; - *q++ = val; - } else { - *q++ = 0x00; - *q++ = 0x00; - } - is_start = 0; - } - /* write header */ - ts_len = q - buf; - put_buffer(&s->pb, buf, ts_len); - /* write data */ - len = TS_PACKET_SIZE - ts_len; - if (len > payload_size) - len = payload_size; - put_buffer(&s->pb, payload, len); - payload += len; - payload_size -= len; - ts_len += len; - /* stuffing */ - len = TS_PACKET_SIZE - ts_len; - if (len > 0) { - memset(buf, 0xff, len); - put_buffer(&s->pb, buf, len); - } - } - put_flush_packet(&s->pb); -} - -static int mpegts_write_packet(AVFormatContext *s, int stream_index, - const uint8_t *buf, int size, int64_t pts1) -{ - AVStream *st = s->streams[stream_index]; - MpegTSWriteStream *ts_st = st->priv_data; - int len; - - while (size > 0) { - len = DEFAULT_PES_PAYLOAD_SIZE - ts_st->payload_index; - if (len > size) - len = size; - memcpy(ts_st->payload + ts_st->payload_index, buf, len); - buf += len; - size -= len; - ts_st->payload_index += len; - if (ts_st->payload_pts == AV_NOPTS_VALUE) - ts_st->payload_pts = pts1; - if (ts_st->payload_index >= DEFAULT_PES_PAYLOAD_SIZE) { - mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_index, - ts_st->payload_pts); - ts_st->payload_pts = AV_NOPTS_VALUE; - ts_st->payload_index = 0; - } - } - return 0; -} - -static int mpegts_write_end(AVFormatContext *s) -{ - MpegTSWrite *ts = s->priv_data; - MpegTSWriteStream *ts_st; - MpegTSService *service; - AVStream *st; - int i; - - /* flush current packets */ - for(i = 0; i < s->nb_streams; i++) { - st = s->streams[i]; - ts_st = st->priv_data; - if (ts_st->payload_index > 0) { - mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_index, - ts_st->payload_pts); - } - } - put_flush_packet(&s->pb); - - for(i = 0; i < ts->nb_services; i++) { - service = ts->services[i]; - av_freep(&service->provider_name); - av_freep(&service->name); - av_free(service); - } - av_free(ts->services); - - for(i = 0; i < s->nb_streams; i++) { - st = s->streams[i]; - av_free(st->priv_data); - } - return 0; -} - -AVOutputFormat mpegts_mux = { - "mpegts", - "MPEG2 transport stream format", - "video/x-mpegts", - "ts", - sizeof(MpegTSWrite), - CODEC_ID_MP2, - CODEC_ID_MPEG2VIDEO, - mpegts_write_header, - mpegts_write_packet, - mpegts_write_end, -};