diff options
Diffstat (limited to 'contrib/ffmpeg/libavformat/dvenc.c')
| -rw-r--r-- | contrib/ffmpeg/libavformat/dvenc.c | 411 |
1 files changed, 0 insertions, 411 deletions
diff --git a/contrib/ffmpeg/libavformat/dvenc.c b/contrib/ffmpeg/libavformat/dvenc.c deleted file mode 100644 index bdac43784..000000000 --- a/contrib/ffmpeg/libavformat/dvenc.c +++ /dev/null @@ -1,411 +0,0 @@ -/* - * General DV muxer/demuxer - * Copyright (c) 2003 Roman Shaposhnik - * - * Many thanks to Dan Dennedy <dan@dennedy.org> for providing wealth - * of DV technical info. - * - * Raw DV format - * Copyright (c) 2002 Fabrice Bellard. - * - * 50 Mbps (DVCPRO50) support - * Copyright (c) 2006 Daniel Maas <dmaas@maasdigital.com> - * - * This file is part of FFmpeg. - * - * FFmpeg 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 2.1 of the License, or (at your option) any later version. - * - * FFmpeg 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 FFmpeg; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include <time.h> -#include <stdarg.h> -#include "avformat.h" -#include "dvdata.h" -#include "dv.h" -#include "fifo.h" - -struct DVMuxContext { - const DVprofile* sys; /* Current DV profile. E.g.: 525/60, 625/50 */ - int n_ast; /* Number of stereo audio streams (up to 2) */ - AVStream *ast[2]; /* Stereo audio streams */ - AVFifoBuffer audio_data[2]; /* Fifo for storing excessive amounts of PCM */ - int frames; /* Number of a current frame */ - time_t start_time; /* Start time of recording */ - int has_audio; /* frame under contruction has audio */ - int has_video; /* frame under contruction has video */ - uint8_t frame_buf[DV_MAX_FRAME_SIZE]; /* frame under contruction */ -}; - -static const int dv_aaux_packs_dist[12][9] = { - { 0xff, 0xff, 0xff, 0x50, 0x51, 0x52, 0x53, 0xff, 0xff }, - { 0x50, 0x51, 0x52, 0x53, 0xff, 0xff, 0xff, 0xff, 0xff }, - { 0xff, 0xff, 0xff, 0x50, 0x51, 0x52, 0x53, 0xff, 0xff }, - { 0x50, 0x51, 0x52, 0x53, 0xff, 0xff, 0xff, 0xff, 0xff }, - { 0xff, 0xff, 0xff, 0x50, 0x51, 0x52, 0x53, 0xff, 0xff }, - { 0x50, 0x51, 0x52, 0x53, 0xff, 0xff, 0xff, 0xff, 0xff }, - { 0xff, 0xff, 0xff, 0x50, 0x51, 0x52, 0x53, 0xff, 0xff }, - { 0x50, 0x51, 0x52, 0x53, 0xff, 0xff, 0xff, 0xff, 0xff }, - { 0xff, 0xff, 0xff, 0x50, 0x51, 0x52, 0x53, 0xff, 0xff }, - { 0x50, 0x51, 0x52, 0x53, 0xff, 0xff, 0xff, 0xff, 0xff }, - { 0xff, 0xff, 0xff, 0x50, 0x51, 0x52, 0x53, 0xff, 0xff }, - { 0x50, 0x51, 0x52, 0x53, 0xff, 0xff, 0xff, 0xff, 0xff }, -}; - -static int dv_audio_frame_size(const DVprofile* sys, int frame) -{ - return sys->audio_samples_dist[frame % (sizeof(sys->audio_samples_dist)/ - sizeof(sys->audio_samples_dist[0]))]; -} - -static int dv_write_pack(enum dv_pack_type pack_id, DVMuxContext *c, uint8_t* buf, ...) -{ - struct tm tc; - time_t ct; - int ltc_frame; - va_list ap; - - buf[0] = (uint8_t)pack_id; - switch (pack_id) { - case dv_timecode: - ct = (time_t)(c->frames / ((float)c->sys->frame_rate / - (float)c->sys->frame_rate_base)); - brktimegm(ct, &tc); - /* - * LTC drop-frame frame counter drops two frames (0 and 1) every - * minute, unless it is exactly divisible by 10 - */ - ltc_frame = (c->frames + 2*ct/60 - 2*ct/600) % c->sys->ltc_divisor; - buf[1] = (0 << 7) | /* Color fame: 0 - unsync; 1 - sync mode */ - (1 << 6) | /* Drop frame timecode: 0 - nondrop; 1 - drop */ - ((ltc_frame / 10) << 4) | /* Tens of frames */ - (ltc_frame % 10); /* Units of frames */ - buf[2] = (1 << 7) | /* Biphase mark polarity correction: 0 - even; 1 - odd */ - ((tc.tm_sec / 10) << 4) | /* Tens of seconds */ - (tc.tm_sec % 10); /* Units of seconds */ - buf[3] = (1 << 7) | /* Binary group flag BGF0 */ - ((tc.tm_min / 10) << 4) | /* Tens of minutes */ - (tc.tm_min % 10); /* Units of minutes */ - buf[4] = (1 << 7) | /* Binary group flag BGF2 */ - (1 << 6) | /* Binary group flag BGF1 */ - ((tc.tm_hour / 10) << 4) | /* Tens of hours */ - (tc.tm_hour % 10); /* Units of hours */ - break; - case dv_audio_source: /* AAUX source pack */ - va_start(ap, buf); - buf[1] = (1 << 7) | /* locked mode -- SMPTE only supports locked mode */ - (1 << 6) | /* reserved -- always 1 */ - (dv_audio_frame_size(c->sys, c->frames) - - c->sys->audio_min_samples[0]); - /* # of samples */ - buf[2] = (0 << 7) | /* multi-stereo */ - (0 << 5) | /* #of audio channels per block: 0 -- 1 channel */ - (0 << 4) | /* pair bit: 0 -- one pair of channels */ - !!va_arg(ap, int); /* audio mode */ - buf[3] = (1 << 7) | /* res */ - (1 << 6) | /* multi-language flag */ - (c->sys->dsf << 5) | /* system: 60fields/50fields */ - (c->sys->n_difchan & 2); /* definition: 0 -- 25Mbps, 2 -- 50Mbps */ - buf[4] = (1 << 7) | /* emphasis: 1 -- off */ - (0 << 6) | /* emphasis time constant: 0 -- reserved */ - (0 << 3) | /* frequency: 0 -- 48Khz, 1 -- 44,1Khz, 2 -- 32Khz */ - 0; /* quantization: 0 -- 16bit linear, 1 -- 12bit nonlinear */ - va_end(ap); - break; - case dv_audio_control: - buf[1] = (0 << 6) | /* copy protection: 0 -- unrestricted */ - (1 << 4) | /* input source: 1 -- digital input */ - (3 << 2) | /* compression: 3 -- no information */ - 0; /* misc. info/SMPTE emphasis off */ - buf[2] = (1 << 7) | /* recording start point: 1 -- no */ - (1 << 6) | /* recording end point: 1 -- no */ - (1 << 3) | /* recording mode: 1 -- original */ - 7; - buf[3] = (1 << 7) | /* direction: 1 -- forward */ - (c->sys->pix_fmt == PIX_FMT_YUV420P ? 0x20 : /* speed */ - c->sys->ltc_divisor*4); - buf[4] = (1 << 7) | /* reserved -- always 1 */ - 0x7f; /* genre category */ - break; - case dv_audio_recdate: - case dv_video_recdate: /* VAUX recording date */ - ct = c->start_time + (time_t)(c->frames / - ((float)c->sys->frame_rate / (float)c->sys->frame_rate_base)); - brktimegm(ct, &tc); - buf[1] = 0xff; /* ds, tm, tens of time zone, units of time zone */ - /* 0xff is very likely to be "unknown" */ - buf[2] = (3 << 6) | /* reserved -- always 1 */ - ((tc.tm_mday / 10) << 4) | /* Tens of day */ - (tc.tm_mday % 10); /* Units of day */ - buf[3] = /* we set high 4 bits to 0, shouldn't we set them to week? */ - ((tc.tm_mon / 10) << 4) | /* Tens of month */ - (tc.tm_mon % 10); /* Units of month */ - buf[4] = (((tc.tm_year % 100) / 10) << 4) | /* Tens of year */ - (tc.tm_year % 10); /* Units of year */ - break; - case dv_audio_rectime: /* AAUX recording time */ - case dv_video_rectime: /* VAUX recording time */ - ct = c->start_time + (time_t)(c->frames / - ((float)c->sys->frame_rate / (float)c->sys->frame_rate_base)); - brktimegm(ct, &tc); - buf[1] = (3 << 6) | /* reserved -- always 1 */ - 0x3f; /* tens of frame, units of frame: 0x3f - "unknown" ? */ - buf[2] = (1 << 7) | /* reserved -- always 1 */ - ((tc.tm_sec / 10) << 4) | /* Tens of seconds */ - (tc.tm_sec % 10); /* Units of seconds */ - buf[3] = (1 << 7) | /* reserved -- always 1 */ - ((tc.tm_min / 10) << 4) | /* Tens of minutes */ - (tc.tm_min % 10); /* Units of minutes */ - buf[4] = (3 << 6) | /* reserved -- always 1 */ - ((tc.tm_hour / 10) << 4) | /* Tens of hours */ - (tc.tm_hour % 10); /* Units of hours */ - break; - default: - buf[1] = buf[2] = buf[3] = buf[4] = 0xff; - } - return 5; -} - -static void dv_inject_audio(DVMuxContext *c, int channel, uint8_t* frame_ptr) -{ - int i, j, d, of, size; - size = 4 * dv_audio_frame_size(c->sys, c->frames); - frame_ptr += channel * c->sys->difseg_size * 150 * 80; - for (i = 0; i < c->sys->difseg_size; i++) { - frame_ptr += 6 * 80; /* skip DIF segment header */ - for (j = 0; j < 9; j++) { - dv_write_pack(dv_aaux_packs_dist[i][j], c, &frame_ptr[3], i >= c->sys->difseg_size/2); - for (d = 8; d < 80; d+=2) { - of = c->sys->audio_shuffle[i][j] + (d - 8)/2 * c->sys->audio_stride; - if (of*2 >= size) - continue; - - frame_ptr[d] = av_fifo_peek(&c->audio_data[channel], of*2+1); // FIXME: may be we have to admit - frame_ptr[d+1] = av_fifo_peek(&c->audio_data[channel], of*2); // that DV is a big endian PCM - } - frame_ptr += 16 * 80; /* 15 Video DIFs + 1 Audio DIF */ - } - } -} - -static void dv_inject_metadata(DVMuxContext *c, uint8_t* frame) -{ - int j, k; - uint8_t* buf; - - for (buf = frame; buf < frame + c->sys->frame_size; buf += 150 * 80) { - /* DV subcode: 2nd and 3d DIFs */ - for (j = 80; j < 80 * 3; j += 80) { - for (k = 6; k < 6 * 8; k += 8) - dv_write_pack(dv_timecode, c, &buf[j+k]); - - if (((long)(buf-frame)/(c->sys->frame_size/(c->sys->difseg_size*c->sys->n_difchan))%c->sys->difseg_size) > 5) { /* FIXME: is this really needed ? */ - dv_write_pack(dv_video_recdate, c, &buf[j+14]); - dv_write_pack(dv_video_rectime, c, &buf[j+22]); - dv_write_pack(dv_video_recdate, c, &buf[j+38]); - dv_write_pack(dv_video_rectime, c, &buf[j+46]); - } - } - - /* DV VAUX: 4th, 5th and 6th 3DIFs */ - for (j = 80*3 + 3; j < 80*6; j += 80) { - dv_write_pack(dv_video_recdate, c, &buf[j+5*2]); - dv_write_pack(dv_video_rectime, c, &buf[j+5*3]); - dv_write_pack(dv_video_recdate, c, &buf[j+5*11]); - dv_write_pack(dv_video_rectime, c, &buf[j+5*12]); - } - } -} - -/* - * The following 3 functions constitute our interface to the world - */ - -int dv_assemble_frame(DVMuxContext *c, AVStream* st, - const uint8_t* data, int data_size, uint8_t** frame) -{ - int i, reqasize; - - *frame = &c->frame_buf[0]; - reqasize = 4 * dv_audio_frame_size(c->sys, c->frames); - - switch (st->codec->codec_type) { - case CODEC_TYPE_VIDEO: - /* FIXME: we have to have more sensible approach than this one */ - if (c->has_video) - av_log(st->codec, AV_LOG_ERROR, "Can't process DV frame #%d. Insufficient audio data or severe sync problem.\n", c->frames); - - memcpy(*frame, data, c->sys->frame_size); - c->has_video = 1; - break; - case CODEC_TYPE_AUDIO: - for (i = 0; i < c->n_ast && st != c->ast[i]; i++); - - /* FIXME: we have to have more sensible approach than this one */ - if (av_fifo_size(&c->audio_data[i]) + data_size >= 100*AVCODEC_MAX_AUDIO_FRAME_SIZE) - av_log(st->codec, AV_LOG_ERROR, "Can't process DV frame #%d. Insufficient video data or severe sync problem.\n", c->frames); - av_fifo_write(&c->audio_data[i], data, data_size); - - /* Lets see if we've got enough audio for one DV frame */ - c->has_audio |= ((reqasize <= av_fifo_size(&c->audio_data[i])) << i); - - break; - default: - break; - } - - /* Lets see if we have enough data to construct one DV frame */ - if (c->has_video == 1 && c->has_audio + 1 == 1<<c->n_ast) { - dv_inject_metadata(c, *frame); - for (i=0; i<c->n_ast; i++) { - dv_inject_audio(c, i, *frame); - av_fifo_drain(&c->audio_data[i], reqasize); - } - - c->has_video = 0; - c->has_audio = 0; - c->frames++; - - return c->sys->frame_size; - } - - return 0; -} - -DVMuxContext* dv_init_mux(AVFormatContext* s) -{ - DVMuxContext *c = (DVMuxContext *)s->priv_data; - AVStream *vst = NULL; - int i; - - /* we support at most 1 video and 2 audio streams */ - if (s->nb_streams > 3) - return NULL; - - c->n_ast = 0; - c->ast[0] = c->ast[1] = NULL; - - /* We have to sort out where audio and where video stream is */ - for (i=0; i<s->nb_streams; i++) { - switch (s->streams[i]->codec->codec_type) { - case CODEC_TYPE_VIDEO: - vst = s->streams[i]; - break; - case CODEC_TYPE_AUDIO: - c->ast[c->n_ast++] = s->streams[i]; - break; - default: - goto bail_out; - } - } - - /* Some checks -- DV format is very picky about its incoming streams */ - if (!vst || vst->codec->codec_id != CODEC_ID_DVVIDEO) - goto bail_out; - for (i=0; i<c->n_ast; i++) { - if (c->ast[i] && (c->ast[i]->codec->codec_id != CODEC_ID_PCM_S16LE || - c->ast[i]->codec->sample_rate != 48000 || - c->ast[i]->codec->channels != 2)) - goto bail_out; - } - c->sys = dv_codec_profile(vst->codec); - if (!c->sys) - goto bail_out; - - if((c->n_ast > 1) && (c->sys->n_difchan < 2)) { - /* only 1 stereo pair is allowed in 25Mbps mode */ - goto bail_out; - } - - /* Ok, everything seems to be in working order */ - c->frames = 0; - c->has_audio = 0; - c->has_video = 0; - c->start_time = (time_t)s->timestamp; - - for (i=0; i<c->n_ast; i++) { - if (c->ast[i] && av_fifo_init(&c->audio_data[i], 100*AVCODEC_MAX_AUDIO_FRAME_SIZE) < 0) { - while (i>0) { - i--; - av_fifo_free(&c->audio_data[i]); - } - goto bail_out; - } - } - - return c; - -bail_out: - return NULL; -} - -void dv_delete_mux(DVMuxContext *c) -{ - int i; - for (i=0; i < c->n_ast; i++) - av_fifo_free(&c->audio_data[i]); -} - -#ifdef CONFIG_MUXERS -static int dv_write_header(AVFormatContext *s) -{ - if (!dv_init_mux(s)) { - av_log(s, AV_LOG_ERROR, "Can't initialize DV format!\n" - "Make sure that you supply exactly two streams:\n" - " video: 25fps or 29.97fps, audio: 2ch/48Khz/PCM\n" - " (50Mbps allows an optional second audio stream)\n"); - return -1; - } - return 0; -} - -static int dv_write_packet(struct AVFormatContext *s, AVPacket *pkt) -{ - uint8_t* frame; - int fsize; - - fsize = dv_assemble_frame((DVMuxContext *)s->priv_data, s->streams[pkt->stream_index], - pkt->data, pkt->size, &frame); - if (fsize > 0) { - put_buffer(&s->pb, frame, fsize); - put_flush_packet(&s->pb); - } - return 0; -} - -/* - * We might end up with some extra A/V data without matching counterpart. - * E.g. video data without enough audio to write the complete frame. - * Currently we simply drop the last frame. I don't know whether this - * is the best strategy of all - */ -static int dv_write_trailer(struct AVFormatContext *s) -{ - dv_delete_mux((DVMuxContext *)s->priv_data); - return 0; -} -#endif /* CONFIG_MUXERS */ - -#ifdef CONFIG_DV_MUXER -AVOutputFormat dv_muxer = { - "dv", - "DV video format", - NULL, - "dv", - sizeof(DVMuxContext), - CODEC_ID_PCM_S16LE, - CODEC_ID_DVVIDEO, - dv_write_header, - dv_write_packet, - dv_write_trailer, -}; -#endif |