* 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 <dmaas@maasdigital.com>
*
- * 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 <time.h>
#include <stdarg.h>
+
#include "avformat.h"
-#include "libavcodec/dvdata.h"
+#include "internal.h"
+#include "libavcodec/dv_profile.h"
+#include "libavcodec/dv.h"
#include "dv.h"
#include "libavutil/fifo.h"
+#include "libavutil/mathematics.h"
+
+#define MAX_AUDIO_FRAME_SIZE 192000 // 1 second of 48khz 32-bit 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 AVDVProfile* 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] = {
{ 0x50, 0x51, 0x52, 0x53, 0xff, 0xff, 0xff, 0xff, 0xff },
};
-static int dv_audio_frame_size(const DVprofile* sys, int frame)
+static int dv_audio_frame_size(const AVDVProfile* 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]))];
}
buf[0] = (uint8_t)pack_id;
switch (pack_id) {
case dv_timecode:
- ct = (time_t)av_rescale_rnd(c->frames, c->sys->time_base.num, c->sys->time_base.den,
- AV_ROUND_DOWN);
- 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);
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 */
+ 0; /* quantization: 0 -- 16-bit linear, 1 -- 12-bit nonlinear */
va_end(ap);
break;
case dv_audio_control:
(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 + av_rescale_rnd(c->frames, c->sys->time_base.num,
- c->sys->time_base.den, AV_ROUND_DOWN);
- brktimegm(ct, &tc);
+ 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 */
case dv_video_rectime: /* VAUX recording time */
ct = c->start_time + av_rescale_rnd(c->frames, c->sys->time_base.num,
c->sys->time_base.den, AV_ROUND_DOWN);
- brktimegm(ct, &tc);
+ 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 */
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 */
}
* 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(AVFormatContext *s,
+ DVMuxContext *c, AVStream* st,
+ 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:
+ switch (st->codecpar->codec_type) {
+ 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);
+ av_log(s, AV_LOG_ERROR, "Can't process DV frame #%d. Insufficient audio data or severe sync problem.\n", c->frames);
+ if (data_size != c->sys->frame_size) {
+ av_log(s, AV_LOG_ERROR, "Unexpected frame size, %d != %d\n",
+ data_size, c->sys->frame_size);
+ return AVERROR(ENOSYS);
+ }
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)
- 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);
+ if (av_fifo_size(c->audio_data[i]) + data_size >= 100*MAX_AUDIO_FRAME_SIZE)
+ av_log(s, 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);
/* 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:
}
/* Let us see if we have enough data to construct one DV frame. */
- if (c->has_video == 1 && c->has_audio + 1 == 1<<c->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; i<c->n_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;
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; i<s->nb_streams; i++) {
- switch (s->streams[i]->codec->codec_type) {
- case CODEC_TYPE_VIDEO:
+ switch (s->streams[i]->codecpar->codec_type) {
+ 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;
}
/* Some checks -- DV format is very picky about its incoming streams */
- if (!vst || vst->codec->codec_id != CODEC_ID_DVVIDEO)
+ if (!vst || vst->codecpar->codec_id != AV_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))
+ if (c->ast[i] && (c->ast[i]->codecpar->codec_id != AV_CODEC_ID_PCM_S16LE ||
+ c->ast[i]->codecpar->sample_rate != 48000 ||
+ c->ast[i]->codecpar->channels != 2))
goto bail_out;
}
- c->sys = dv_codec_profile(vst->codec);
+ c->sys = av_dv_codec_profile(vst->codecpar->width, vst->codecpar->height, vst->codecpar->format);
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; 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) {
+ 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;
}
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)) {
uint8_t* frame;
int fsize;
- fsize = dv_assemble_frame(s->priv_data, s->streams[pkt->stream_index],
+ fsize = dv_assemble_frame(s, 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);
}
return 0;
}
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 */
projects / ffmpeg / blobdiff