X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavformat%2Fdvenc.c;h=a991cc6b0c23978b78b2cd4f70cb77c297010398;hb=d641ee94b57a581ab0e45bb21c64bb5a32b0502c;hp=468fed3112837d83d104218e2af6314b4f105725;hpb=910f02a05434bb6d8b946284c0da254a44707a83;p=ffmpeg diff --git a/libavformat/dvenc.c b/libavformat/dvenc.c index 468fed31128..a991cc6b0c2 100644 --- a/libavformat/dvenc.c +++ b/libavformat/dvenc.c @@ -6,44 +6,50 @@ * of DV technical info. * * Raw DV format - * Copyright (c) 2002 Fabrice Bellard. + * Copyright (c) 2002 Fabrice Bellard * * 50 Mbps (DVCPRO50) support * Copyright (c) 2006 Daniel Maas * - * This file is part of FFmpeg. + * This file is part of Libav. * - * FFmpeg is free software; you can redistribute it and/or + * Libav 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, + * Libav 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 + * License along with Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include + #include "avformat.h" +#include "internal.h" +#include "libavcodec/dv_profile.h" #include "libavcodec/dvdata.h" #include "dv.h" #include "libavutil/fifo.h" +#include "libavutil/mathematics.h" + +#define MAX_AUDIO_FRAME_SIZE 192000 // 1 second of 48khz 32bit audio 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 */ + 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; /* current frame number */ + int64_t start_time; /* recording start time */ + int has_audio; /* frame under construction has audio */ + int has_video; /* frame under construction has video */ + uint8_t frame_buf[DV_MAX_FRAME_SIZE]; /* frame under construction */ }; static const int dv_aaux_packs_dist[12][9] = { @@ -63,7 +69,7 @@ static const int dv_aaux_packs_dist[12][9] = { static int dv_audio_frame_size(const DVprofile* sys, int frame) { - return sys->audio_samples_dist[frame % (sizeof(sys->audio_samples_dist)/ + return sys->audio_samples_dist[frame % (sizeof(sys->audio_samples_dist) / sizeof(sys->audio_samples_dist[0]))]; } @@ -77,28 +83,28 @@ static int dv_write_pack(enum dv_pack_type pack_id, DVMuxContext *c, uint8_t* bu 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); + ct = (time_t)av_rescale_rnd(c->frames, c->sys->time_base.num, + c->sys->time_base.den, AV_ROUND_DOWN); + ff_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 */ + ltc_frame = (c->frames + 2 * ct / 60 - 2 * ct / 600) % c->sys->ltc_divisor; + buf[1] = (0 << 7) | /* color frame: 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); @@ -131,16 +137,16 @@ static int dv_write_pack(enum dv_pack_type pack_id, DVMuxContext *c, uint8_t* bu (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); + (c->sys->pix_fmt == AV_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); + ct = c->start_time + av_rescale_rnd(c->frames, c->sys->time_base.num, + c->sys->time_base.den, AV_ROUND_DOWN); + ff_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 */ @@ -154,9 +160,9 @@ static int dv_write_pack(enum dv_pack_type pack_id, DVMuxContext *c, uint8_t* bu 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); + ct = c->start_time + av_rescale_rnd(c->frames, c->sys->time_base.num, + c->sys->time_base.den, AV_ROUND_DOWN); + ff_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 */ @@ -189,8 +195,8 @@ static void dv_inject_audio(DVMuxContext *c, int channel, uint8_t* frame_ptr) if (of*2 >= size) continue; - frame_ptr[d] = av_fifo_peek(&c->audio_data[channel], of*2+1); // FIXME: maybe 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[d] = *av_fifo_peek2(c->audio_data[channel], of*2+1); // FIXME: maybe we have to admit + frame_ptr[d+1] = *av_fifo_peek2(c->audio_data[channel], of*2); // that DV is a big-endian PCM } frame_ptr += 16 * 80; /* 15 Video DIFs + 1 Audio DIF */ } @@ -230,8 +236,8 @@ static void dv_inject_metadata(DVMuxContext *c, uint8_t* frame) * 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) +static int dv_assemble_frame(DVMuxContext *c, AVStream* st, + uint8_t* data, int data_size, uint8_t** frame) { int i, reqasize; @@ -239,7 +245,7 @@ int dv_assemble_frame(DVMuxContext *c, AVStream* st, reqasize = 4 * dv_audio_frame_size(c->sys, c->frames); switch (st->codec->codec_type) { - case CODEC_TYPE_VIDEO: + case AVMEDIA_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); @@ -247,16 +253,16 @@ int dv_assemble_frame(DVMuxContext *c, AVStream* st, memcpy(*frame, data, c->sys->frame_size); c->has_video = 1; break; - case CODEC_TYPE_AUDIO: + case AVMEDIA_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) + if (av_fifo_size(c->audio_data[i]) + data_size >= 100*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_generic_write(&c->audio_data[i], data, data_size, NULL); + av_fifo_generic_write(c->audio_data[i], data, data_size, NULL); /* Let us see if we've got enough audio for one DV frame. */ - c->has_audio |= ((reqasize <= av_fifo_size(&c->audio_data[i])) << i); + c->has_audio |= ((reqasize <= av_fifo_size(c->audio_data[i])) << i); break; default: @@ -264,13 +270,13 @@ int dv_assemble_frame(DVMuxContext *c, AVStream* st, } /* Let us see if we have enough data to construct one DV frame. */ - if (c->has_video == 1 && c->has_audio + 1 == 1<n_ast) { + if (c->has_video == 1 && c->has_audio + 1 == 1 << c->n_ast) { dv_inject_metadata(c, *frame); c->has_audio = 0; - for (i=0; in_ast; i++) { + for (i=0; i < c->n_ast; i++) { dv_inject_audio(c, i, *frame); - av_fifo_drain(&c->audio_data[i], reqasize); - c->has_audio |= ((reqasize <= av_fifo_size(&c->audio_data[i])) << i); + av_fifo_drain(c->audio_data[i], reqasize); + c->has_audio |= ((reqasize <= av_fifo_size(c->audio_data[i])) << i); } c->has_video = 0; @@ -283,27 +289,28 @@ int dv_assemble_frame(DVMuxContext *c, AVStream* st, return 0; } -DVMuxContext* dv_init_mux(AVFormatContext* s) +static DVMuxContext* dv_init_mux(AVFormatContext* s) { DVMuxContext *c = s->priv_data; AVStream *vst = NULL; + AVDictionaryEntry *t; int i; /* we support at most 1 video and 2 audio streams */ if (s->nb_streams > 3) return NULL; - c->n_ast = 0; + 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; inb_streams; i++) { switch (s->streams[i]->codec->codec_type) { - case CODEC_TYPE_VIDEO: + case AVMEDIA_TYPE_VIDEO: if (vst) return NULL; vst = s->streams[i]; break; - case CODEC_TYPE_AUDIO: + case AVMEDIA_TYPE_AUDIO: if (c->n_ast > 1) return NULL; c->ast[c->n_ast++] = s->streams[i]; break; @@ -313,34 +320,35 @@ DVMuxContext* dv_init_mux(AVFormatContext* s) } /* Some checks -- DV format is very picky about its incoming streams */ - if (!vst || vst->codec->codec_id != CODEC_ID_DVVIDEO) + if (!vst || vst->codec->codec_id != AV_CODEC_ID_DVVIDEO) goto bail_out; for (i=0; in_ast; i++) { - if (c->ast[i] && (c->ast[i]->codec->codec_id != CODEC_ID_PCM_S16LE || + if (c->ast[i] && (c->ast[i]->codec->codec_id != AV_CODEC_ID_PCM_S16LE || c->ast[i]->codec->sample_rate != 48000 || - c->ast[i]->codec->channels != 2)) + c->ast[i]->codec->channels != 2)) goto bail_out; } - c->sys = dv_codec_profile(vst->codec); + c->sys = avpriv_dv_codec_profile(vst->codec); if (!c->sys) goto bail_out; - if((c->n_ast > 1) && (c->sys->n_difchan < 2)) { + 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; in_ast; i++) { - if (c->ast[i] && av_fifo_init(&c->audio_data[i], 100*AVCODEC_MAX_AUDIO_FRAME_SIZE) < 0) { - while (i>0) { + c->frames = 0; + c->has_audio = 0; + c->has_video = 0; + if (t = av_dict_get(s->metadata, "creation_time", NULL, 0)) + c->start_time = ff_iso8601_to_unix_time(t->value); + + for (i=0; i < c->n_ast; i++) { + if (c->ast[i] && !(c->audio_data[i]=av_fifo_alloc(100*MAX_AUDIO_FRAME_SIZE))) { + while (i > 0) { i--; - av_fifo_free(&c->audio_data[i]); + av_fifo_free(c->audio_data[i]); } goto bail_out; } @@ -352,14 +360,13 @@ bail_out: return NULL; } -void dv_delete_mux(DVMuxContext *c) +static void dv_delete_mux(DVMuxContext *c) { int i; for (i=0; i < c->n_ast; i++) - av_fifo_free(&c->audio_data[i]); + av_fifo_free(c->audio_data[i]); } -#ifdef CONFIG_DV_MUXER static int dv_write_header(AVFormatContext *s) { if (!dv_init_mux(s)) { @@ -380,8 +387,8 @@ static int dv_write_packet(struct AVFormatContext *s, AVPacket *pkt) fsize = dv_assemble_frame(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); + avio_write(s->pb, frame, fsize); + avio_flush(s->pb); } return 0; } @@ -398,16 +405,14 @@ static int dv_write_trailer(struct AVFormatContext *s) return 0; } -AVOutputFormat dv_muxer = { - "dv", - NULL_IF_CONFIG_SMALL("DV video format"), - NULL, - "dv", - sizeof(DVMuxContext), - CODEC_ID_PCM_S16LE, - CODEC_ID_DVVIDEO, - dv_write_header, - dv_write_packet, - dv_write_trailer, +AVOutputFormat ff_dv_muxer = { + .name = "dv", + .long_name = NULL_IF_CONFIG_SMALL("DV (Digital Video)"), + .extensions = "dv", + .priv_data_size = sizeof(DVMuxContext), + .audio_codec = AV_CODEC_ID_PCM_S16LE, + .video_codec = AV_CODEC_ID_DVVIDEO, + .write_header = dv_write_header, + .write_packet = dv_write_packet, + .write_trailer = dv_write_trailer, }; -#endif /* CONFIG_DV_MUXER */