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libavformat: remove the ffmenc and ffmdec muxer and demuxers

Browse Source 
Used only by ffserver.

Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
This commit is contained in:
Rostislav Pehlivanov 2017-10-21 19:38:59 +01:00
parent 6b35a83214
commit c17f476144
6 changed files with 1 additions and 1305 deletions
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1
Changelog
View File

@ -36,6 +36,7 @@ version <next>:
- aiir audio filter
- aiff: add support for CD-ROM XA ADPCM
- Removed the ffserver program
- Removed the ffmenc and ffmdec muxer and demuxer
version 3.4:

2
libavformat/Makefile
View File

@ -161,8 +161,6 @@ OBJS-$(CONFIG_EA_DEMUXER) += electronicarts.o
OBJS-$(CONFIG_EAC3_DEMUXER) += ac3dec.o rawdec.o
OBJS-$(CONFIG_EAC3_MUXER) += rawenc.o
OBJS-$(CONFIG_EPAF_DEMUXER) += epafdec.o pcm.o
OBJS-$(CONFIG_FFM_DEMUXER) += ffmdec.o
OBJS-$(CONFIG_FFM_MUXER) += ffmenc.o
OBJS-$(CONFIG_FFMETADATA_DEMUXER) += ffmetadec.o
OBJS-$(CONFIG_FFMETADATA_MUXER) += ffmetaenc.o
OBJS-$(CONFIG_FIFO_MUXER) += fifo.o

1
libavformat/allformats.c
View File

@ -120,7 +120,6 @@ static void register_all(void)
REGISTER_MUXDEMUX(EAC3, eac3);
REGISTER_DEMUXER (EPAF, epaf);
REGISTER_MUXER (F4V, f4v);
REGISTER_MUXDEMUX(FFM, ffm);
REGISTER_MUXDEMUX(FFMETADATA, ffmetadata);
REGISTER_MUXER (FIFO, fifo);
REGISTER_MUXDEMUX(FILMSTRIP, filmstrip);

62
libavformat/ffm.h
View File

@ -1,62 +0,0 @@
/*
* FFM (ffserver live feed) common header
* Copyright (c) 2001 Fabrice Bellard
*
* 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
*/
#ifndef AVFORMAT_FFM_H
#define AVFORMAT_FFM_H
#include <stdint.h>
#include "avformat.h"
#include "avio.h"
/* The FFM file is made of blocks of fixed size */
#define FFM_HEADER_SIZE 14
#define FFM_PACKET_SIZE 4096
#define PACKET_ID 0x666d
/* each packet contains frames (which can span several packets */
#define FRAME_HEADER_SIZE 16
#define FLAG_KEY_FRAME 0x01
#define FLAG_DTS 0x02
enum {
READ_HEADER,
READ_DATA,
};
typedef struct FFMContext {
const AVClass *class;
/* only reading mode */
int64_t write_index, file_size;
int read_state;
uint8_t header[FRAME_HEADER_SIZE+4];
/* read and write */
int first_packet; /* true if first packet, needed to set the discontinuity tag */
int packet_size;
int frame_offset;
int64_t dts;
uint8_t *packet_ptr, *packet_end;
uint8_t packet[FFM_PACKET_SIZE];
int64_t start_time;
int server_attached;
} FFMContext;
#endif /* AVFORMAT_FFM_H */

878
libavformat/ffmdec.c
View File

@ -1,878 +0,0 @@
/*
* FFM (ffserver live feed) demuxer
* Copyright (c) 2001 Fabrice Bellard
*
* 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 <stdint.h>
#include "libavutil/imgutils.h"
#include "libavutil/internal.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/intfloat.h"
#include "libavutil/opt.h"
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/pixdesc.h"
#include "libavcodec/internal.h"
#include "avformat.h"
#include "internal.h"
#include "ffm.h"
#include "avio_internal.h"
static int ffm_is_avail_data(AVFormatContext *s, int size)
{
FFMContext *ffm = s->priv_data;
int64_t pos, avail_size;
ptrdiff_t len;
len = ffm->packet_end - ffm->packet_ptr;
if (size <= len)
return 1;
pos = avio_tell(s->pb);
if (!ffm->write_index) {
if (pos == ffm->file_size)
return AVERROR_EOF;
avail_size = ffm->file_size - pos;
} else {
if (pos == ffm->write_index) {
/* exactly at the end of stream */
if (ffm->server_attached)
return AVERROR(EAGAIN);
else
return AVERROR_INVALIDDATA;
} else if (pos < ffm->write_index) {
avail_size = ffm->write_index - pos;
} else {
avail_size = (ffm->file_size - pos) + (ffm->write_index - FFM_PACKET_SIZE);
}
}
avail_size = (avail_size / ffm->packet_size) * (ffm->packet_size - FFM_HEADER_SIZE) + len;
if (size <= avail_size)
return 1;
else if (ffm->server_attached)
return AVERROR(EAGAIN);
else
return AVERROR_INVALIDDATA;
}
static int ffm_resync(AVFormatContext *s, uint32_t state)
{
av_log(s, AV_LOG_ERROR, "resyncing\n");
while (state != PACKET_ID) {
if (avio_feof(s->pb)) {
av_log(s, AV_LOG_ERROR, "cannot find FFM syncword\n");
return -1;
}
state = (state << 8) | avio_r8(s->pb);
}
return 0;
}
/* first is true if we read the frame header */
static int ffm_read_data(AVFormatContext *s,
uint8_t *buf, int size, int header)
{
FFMContext *ffm = s->priv_data;
AVIOContext *pb = s->pb;
int fill_size, size1, frame_offset;
uint32_t id;
ptrdiff_t len;
int64_t last_pos = -1;
size1 = size;
while (size > 0) {
redo:
len = ffm->packet_end - ffm->packet_ptr;
if (len < 0)
return -1;
if (len > size)
len = size;
if (len == 0) {
if (avio_tell(pb) == ffm->file_size) {
if (ffm->server_attached) {
avio_seek(pb, ffm->packet_size, SEEK_SET);
} else
return AVERROR_EOF;
}
retry_read:
if (pb->buffer_size != ffm->packet_size) {
int64_t tell = avio_tell(pb);
int ret = ffio_set_buf_size(pb, ffm->packet_size);
if (ret < 0)
return ret;
avio_seek(pb, tell, SEEK_SET);
}
id = avio_rb16(pb); /* PACKET_ID */
if (id != PACKET_ID) {
if (ffm_resync(s, id) < 0)
return -1;
last_pos = avio_tell(pb);
}
fill_size = avio_rb16(pb);
ffm->dts = avio_rb64(pb);
frame_offset = avio_rb16(pb);
avio_read(pb, ffm->packet, ffm->packet_size - FFM_HEADER_SIZE);
if (ffm->packet_size < FFM_HEADER_SIZE + fill_size || frame_offset < 0) {
return -1;
}
ffm->packet_end = ffm->packet + (ffm->packet_size - FFM_HEADER_SIZE - fill_size);
/* if first packet or resynchronization packet, we must
handle it specifically */
if (ffm->first_packet || (frame_offset & 0x8000)) {
if (!frame_offset) {
/* This packet has no frame headers in it */
if (avio_tell(pb) >= ffm->packet_size * 3LL) {
int64_t seekback = FFMIN(ffm->packet_size * 2LL, avio_tell(pb) - last_pos);
seekback = FFMAX(seekback, 0);
avio_seek(pb, -seekback, SEEK_CUR);
goto retry_read;
}
/* This is bad, we cannot find a valid frame header */
return 0;
}
ffm->first_packet = 0;
if ((frame_offset & 0x7fff) < FFM_HEADER_SIZE) {
ffm->packet_end = ffm->packet_ptr;
return -1;
}
ffm->packet_ptr = ffm->packet + (frame_offset & 0x7fff) - FFM_HEADER_SIZE;
if (!header)
break;
} else {
ffm->packet_ptr = ffm->packet;
}
goto redo;
}
memcpy(buf, ffm->packet_ptr, len);
buf += len;
ffm->packet_ptr += len;
size -= len;
header = 0;
}
return size1 - size;
}
/* ensure that actual seeking happens between FFM_PACKET_SIZE
and file_size - FFM_PACKET_SIZE */
static int64_t ffm_seek1(AVFormatContext *s, int64_t pos1)
{
FFMContext *ffm = s->priv_data;
AVIOContext *pb = s->pb;
int64_t pos;
pos = FFMIN(pos1, ffm->file_size - FFM_PACKET_SIZE);
pos = FFMAX(pos, FFM_PACKET_SIZE);
ff_dlog(s, "seek to %"PRIx64" -> %"PRIx64"\n", pos1, pos);
return avio_seek(pb, pos, SEEK_SET);
}
static int64_t get_dts(AVFormatContext *s, int64_t pos)
{
AVIOContext *pb = s->pb;
int64_t dts;
ffm_seek1(s, pos);
avio_skip(pb, 4);
dts = avio_rb64(pb);
ff_dlog(s, "dts=%0.6f\n", dts / 1000000.0);
return dts;
}
static void adjust_write_index(AVFormatContext *s)
{
FFMContext *ffm = s->priv_data;
AVIOContext *pb = s->pb;
int64_t pts;
//int64_t orig_write_index = ffm->write_index;
int64_t pos_min, pos_max;
int64_t pts_start;
int64_t ptr = avio_tell(pb);
pos_min = 0;
pos_max = ffm->file_size - 2 * FFM_PACKET_SIZE;
pts_start = get_dts(s, pos_min);
pts = get_dts(s, pos_max);
if (pts - 100000 > pts_start)
goto end;
ffm->write_index = FFM_PACKET_SIZE;
pts_start = get_dts(s, pos_min);
pts = get_dts(s, pos_max);
if (pts - 100000 <= pts_start) {
while (1) {
int64_t newpos;
int64_t newpts;
newpos = ((pos_max + pos_min) / (2 * FFM_PACKET_SIZE)) * FFM_PACKET_SIZE;
if (newpos == pos_min)
break;
newpts = get_dts(s, newpos);
if (newpts - 100000 <= pts) {
pos_max = newpos;
pts = newpts;
} else {
pos_min = newpos;
}
}
ffm->write_index += pos_max;
}
end:
avio_seek(pb, ptr, SEEK_SET);
}
static int ffm_append_recommended_configuration(AVStream *st, char **conf)
{
int ret;
size_t newsize;
av_assert0(conf && st);
if (!*conf)
return 0;
if (!st->recommended_encoder_configuration) {
st->recommended_encoder_configuration = *conf;
*conf = 0;
return 0;
}
newsize = strlen(*conf) + strlen(st->recommended_encoder_configuration) + 2;
if ((ret = av_reallocp(&st->recommended_encoder_configuration, newsize)) < 0)
return ret;
av_strlcat(st->recommended_encoder_configuration, ",", newsize);
av_strlcat(st->recommended_encoder_configuration, *conf, newsize);
av_freep(conf);
return 0;
}
#define VALIDATE_PARAMETER(parameter, name, check) { \
if (check) { \
av_log(s, AV_LOG_ERROR, "Invalid " name " %d\n", codecpar->parameter); \
ret = AVERROR_INVALIDDATA; \
goto fail; \
} \
}
static int ffm2_read_header(AVFormatContext *s)
{
FFMContext *ffm = s->priv_data;
AVStream *st = NULL;
AVIOContext *pb = s->pb;
AVCodecContext *dummy_codec = NULL;
AVCodecParameters *codecpar = NULL;
const AVCodecDescriptor *codec_desc;
int ret;
int f_main = 0, f_cprv = -1, f_stvi = -1, f_stau = -1;
AVCodec *enc;
char *buffer;
ffm->packet_size = avio_rb32(pb);
if (ffm->packet_size != FFM_PACKET_SIZE) {
av_log(s, AV_LOG_ERROR, "Invalid packet size %d, expected size was %d\n",
ffm->packet_size, FFM_PACKET_SIZE);
ret = AVERROR_INVALIDDATA;
goto fail;
}
ffm->write_index = avio_rb64(pb);
/* get also filesize */
if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
ffm->file_size = avio_size(pb);
if (ffm->write_index && 0)
adjust_write_index(s);
} else {
ffm->file_size = (UINT64_C(1) << 63) - 1;
}
dummy_codec = avcodec_alloc_context3(NULL);
while(!avio_feof(pb)) {
unsigned id = avio_rb32(pb);
unsigned size = avio_rb32(pb);
int64_t next = avio_tell(pb) + size;
char rc_eq_buf[128];
int flags;
if(!id)
break;
switch(id) {
case MKBETAG('M', 'A', 'I', 'N'):
if (f_main++) {
ret = AVERROR(EINVAL);
goto fail;
}
avio_rb32(pb); /* nb_streams */
avio_rb32(pb); /* total bitrate */
break;
case MKBETAG('C', 'O', 'M', 'M'):
f_cprv = f_stvi = f_stau = 0;
st = avformat_new_stream(s, NULL);
if (!st) {
ret = AVERROR(ENOMEM);
goto fail;
}
avpriv_set_pts_info(st, 64, 1, 1000000);
codecpar = st->codecpar;
/* generic info */
codecpar->codec_id = avio_rb32(pb);
codec_desc = avcodec_descriptor_get(codecpar->codec_id);
if (!codec_desc) {
av_log(s, AV_LOG_ERROR, "Invalid codec id: %d\n", codecpar->codec_id);
codecpar->codec_id = AV_CODEC_ID_NONE;
ret = AVERROR_INVALIDDATA;
goto fail;
}
codecpar->codec_type = avio_r8(pb);
if (codecpar->codec_type != codec_desc->type) {
av_log(s, AV_LOG_ERROR, "Codec type mismatch: expected %d, found %d\n",
codec_desc->type, codecpar->codec_type);
codecpar->codec_id = AV_CODEC_ID_NONE;
codecpar->codec_type = AVMEDIA_TYPE_UNKNOWN;
ret = AVERROR_INVALIDDATA;
goto fail;
}
codecpar->bit_rate = avio_rb32(pb);
if (codecpar->bit_rate < 0) {
av_log(s, AV_LOG_ERROR, "Invalid bit rate %"PRId64"\n", codecpar->bit_rate);
ret = AVERROR_INVALIDDATA;
goto fail;
}
flags = avio_rb32(pb);
#if FF_API_LAVF_AVCTX
FF_DISABLE_DEPRECATION_WARNINGS
st->codec->flags = flags;
FF_ENABLE_DEPRECATION_WARNINGS
#endif
avio_rb32(pb); // flags2
avio_rb32(pb); // debug
if (flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
int size = avio_rb32(pb);
if (size < 0 || size >= FF_MAX_EXTRADATA_SIZE) {
av_log(s, AV_LOG_ERROR, "Invalid extradata size %d\n", size);
ret = AVERROR_INVALIDDATA;
goto fail;
}
codecpar->extradata = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE);
if (!codecpar->extradata) {
ret = AVERROR(ENOMEM);
goto fail;
}
codecpar->extradata_size = size;
avio_read(pb, codecpar->extradata, size);
}
break;
case MKBETAG('S', 'T', 'V', 'I'):
if (f_stvi++ || codecpar->codec_type != AVMEDIA_TYPE_VIDEO) {
ret = AVERROR(EINVAL);
goto fail;
}
avio_rb32(pb); // time_base.num
avio_rb32(pb); // time_base.den
codecpar->width = avio_rb16(pb);
codecpar->height = avio_rb16(pb);
ret = av_image_check_size(codecpar->width, codecpar->height, 0, s);
if (ret < 0)
goto fail;
avio_rb16(pb); // gop_size
codecpar->format = avio_rb32(pb);
if (!av_pix_fmt_desc_get(codecpar->format)) {
av_log(s, AV_LOG_ERROR, "Invalid pix fmt id: %d\n", codecpar->format);
codecpar->format = AV_PIX_FMT_NONE;
ret = AVERROR_INVALIDDATA;
goto fail;
}
avio_r8(pb); // qmin
avio_r8(pb); // qmax
avio_r8(pb); // max_qdiff
avio_rb16(pb); // qcompress / 10000.0
avio_rb16(pb); // qblur / 10000.0
avio_rb32(pb); // bit_rate_tolerance
avio_get_str(pb, INT_MAX, rc_eq_buf, sizeof(rc_eq_buf));
avio_rb32(pb); // rc_max_rate
avio_rb32(pb); // rc_min_rate
avio_rb32(pb); // rc_buffer_size
avio_rb64(pb); // i_quant_factor
avio_rb64(pb); // b_quant_factor
avio_rb64(pb); // i_quant_offset
avio_rb64(pb); // b_quant_offset
avio_rb32(pb); // dct_algo
avio_rb32(pb); // strict_std_compliance
avio_rb32(pb); // max_b_frames
avio_rb32(pb); // mpeg_quant
avio_rb32(pb); // intra_dc_precision
avio_rb32(pb); // me_method
avio_rb32(pb); // mb_decision
avio_rb32(pb); // nsse_weight
avio_rb32(pb); // frame_skip_cmp
avio_rb64(pb); // rc_buffer_aggressivity
codecpar->codec_tag = avio_rb32(pb);
avio_r8(pb); // thread_count
avio_rb32(pb); // coder_type
avio_rb32(pb); // me_cmp
avio_rb32(pb); // me_subpel_quality
avio_rb32(pb); // me_range
avio_rb32(pb); // keyint_min
avio_rb32(pb); // scenechange_threshold
avio_rb32(pb); // b_frame_strategy
avio_rb64(pb); // qcompress
avio_rb64(pb); // qblur
avio_rb32(pb); // max_qdiff
avio_rb32(pb); // refs
break;
case MKBETAG('S', 'T', 'A', 'U'):
if (f_stau++ || codecpar->codec_type != AVMEDIA_TYPE_AUDIO) {
ret = AVERROR(EINVAL);
goto fail;
}
codecpar->sample_rate = avio_rb32(pb);
VALIDATE_PARAMETER(sample_rate, "sample rate", codecpar->sample_rate < 0)
codecpar->channels = avio_rl16(pb);
VALIDATE_PARAMETER(channels, "number of channels", codecpar->channels < 0)
codecpar->frame_size = avio_rl16(pb);
VALIDATE_PARAMETER(frame_size, "frame size", codecpar->frame_size < 0)
break;
case MKBETAG('C', 'P', 'R', 'V'):
if (f_cprv++) {
ret = AVERROR(EINVAL);
goto fail;
}
enc = avcodec_find_encoder(codecpar->codec_id);
if (enc && enc->priv_data_size && enc->priv_class) {
buffer = av_malloc(size + 1);
if (!buffer) {
ret = AVERROR(ENOMEM);
goto fail;
}
avio_get_str(pb, size, buffer, size + 1);
if ((ret = ffm_append_recommended_configuration(st, &buffer)) < 0)
goto fail;
}
break;
case MKBETAG('S', '2', 'V', 'I'):
if (f_stvi++ || !size || codecpar->codec_type != AVMEDIA_TYPE_VIDEO) {
ret = AVERROR(EINVAL);
goto fail;
}
buffer = av_malloc(size);
if (!buffer) {
ret = AVERROR(ENOMEM);
goto fail;
}
avio_get_str(pb, INT_MAX, buffer, size);
// The lack of AVOptions support in AVCodecParameters makes this back and forth copying needed
avcodec_parameters_to_context(dummy_codec, codecpar);
av_set_options_string(dummy_codec, buffer, "=", ",");
avcodec_parameters_from_context(codecpar, dummy_codec);
if ((ret = ffm_append_recommended_configuration(st, &buffer)) < 0)
goto fail;
break;
case MKBETAG('S', '2', 'A', 'U'):
if (f_stau++ || !size || codecpar->codec_type != AVMEDIA_TYPE_AUDIO) {
ret = AVERROR(EINVAL);
goto fail;
}
buffer = av_malloc(size);
if (!buffer) {
ret = AVERROR(ENOMEM);
goto fail;
}
avio_get_str(pb, INT_MAX, buffer, size);
// The lack of AVOptions support in AVCodecParameters makes this back and forth copying needed
avcodec_parameters_to_context(dummy_codec, codecpar);
av_set_options_string(dummy_codec, buffer, "=", ",");
avcodec_parameters_from_context(codecpar, dummy_codec);
if ((ret = ffm_append_recommended_configuration(st, &buffer)) < 0)
goto fail;
break;
}
avio_seek(pb, next, SEEK_SET);
}
/* get until end of block reached */
while ((avio_tell(pb) % ffm->packet_size) != 0 && !pb->eof_reached)
avio_r8(pb);
/* init packet demux */
ffm->packet_ptr = ffm->packet;
ffm->packet_end = ffm->packet;
ffm->frame_offset = 0;
ffm->dts = 0;
ffm->read_state = READ_HEADER;
ffm->first_packet = 1;
avcodec_free_context(&dummy_codec);
return 0;
fail:
avcodec_free_context(&dummy_codec);
return ret;
}
static int ffm_read_header(AVFormatContext *s)
{
FFMContext *ffm = s->priv_data;
AVStream *st;
AVIOContext *pb = s->pb;
AVCodecContext *dummy_codec = NULL;
AVCodecParameters *codecpar;
const AVCodecDescriptor *codec_desc;
int i, nb_streams, ret;
uint32_t tag;
/* header */
tag = avio_rl32(pb);
if (tag == MKTAG('F', 'F', 'M', '2'))
return ffm2_read_header(s);
if (tag != MKTAG('F', 'F', 'M', '1')) {
ret = AVERROR_INVALIDDATA;
goto fail;
}
ffm->packet_size = avio_rb32(pb);
if (ffm->packet_size != FFM_PACKET_SIZE) {
ret = AVERROR_INVALIDDATA;
goto fail;
}
ffm->write_index = avio_rb64(pb);
/* get also filesize */
if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
ffm->file_size = avio_size(pb);
if (ffm->write_index && 0)
adjust_write_index(s);
} else {
ffm->file_size = (UINT64_C(1) << 63) - 1;
}
dummy_codec = avcodec_alloc_context3(NULL);
nb_streams = avio_rb32(pb);
avio_rb32(pb); /* total bitrate */
/* read each stream */
for(i=0;i<nb_streams;i++) {
char rc_eq_buf[128];
int flags;
st = avformat_new_stream(s, NULL);
if (!st) {
ret = AVERROR(ENOMEM);
goto fail;
}
avpriv_set_pts_info(st, 64, 1, 1000000);
codecpar = st->codecpar;
/* generic info */
codecpar->codec_id = avio_rb32(pb);
codec_desc = avcodec_descriptor_get(codecpar->codec_id);
if (!codec_desc) {
av_log(s, AV_LOG_ERROR, "Invalid codec id: %d\n", codecpar->codec_id);
codecpar->codec_id = AV_CODEC_ID_NONE;
ret = AVERROR_INVALIDDATA;
goto fail;
}
codecpar->codec_type = avio_r8(pb); /* codec_type */
if (codecpar->codec_type != codec_desc->type) {
av_log(s, AV_LOG_ERROR, "Codec type mismatch: expected %d, found %d\n",
codec_desc->type, codecpar->codec_type);
codecpar->codec_id = AV_CODEC_ID_NONE;
codecpar->codec_type = AVMEDIA_TYPE_UNKNOWN;
ret = AVERROR_INVALIDDATA;
goto fail;
}
codecpar->bit_rate = avio_rb32(pb);
if (codecpar->bit_rate < 0) {
av_log(s, AV_LOG_WARNING, "Invalid bit rate %"PRId64"\n", codecpar->bit_rate);
ret = AVERROR_INVALIDDATA;
goto fail;
}
flags = avio_rb32(pb);
#if FF_API_LAVF_AVCTX
FF_DISABLE_DEPRECATION_WARNINGS
st->codec->flags = flags;
FF_ENABLE_DEPRECATION_WARNINGS
#endif
avio_rb32(pb); // flags2
avio_rb32(pb); // debug
/* specific info */
switch(codecpar->codec_type) {
case AVMEDIA_TYPE_VIDEO:
avio_rb32(pb); // time_base.num
avio_rb32(pb); // time_base.den
codecpar->width = avio_rb16(pb);
codecpar->height = avio_rb16(pb);
if ((ret = av_image_check_size(codecpar->width, codecpar->height, 0, s)) < 0)
goto fail;
avio_rb16(pb); // gop_size
codecpar->format = avio_rb32(pb);
if (!av_pix_fmt_desc_get(codecpar->format)) {
av_log(s, AV_LOG_ERROR, "Invalid pix fmt id: %d\n", codecpar->format);
codecpar->format = AV_PIX_FMT_NONE;
ret = AVERROR_INVALIDDATA;
goto fail;
}
avio_r8(pb); // qmin
avio_r8(pb); // qmax
avio_r8(pb); // max_qdiff
avio_rb16(pb); // qcompress / 10000.0
avio_rb16(pb); // qblur / 10000.0
avio_rb32(pb); // bit_rate_tolerance
avio_get_str(pb, INT_MAX, rc_eq_buf, sizeof(rc_eq_buf));
avio_rb32(pb); // rc_max_rate
avio_rb32(pb); // rc_min_rate
avio_rb32(pb); // rc_buffer_size
avio_rb64(pb); // i_quant_factor
avio_rb64(pb); // b_quant_factor
avio_rb64(pb); // i_quant_offset
avio_rb64(pb); // b_quant_offset
avio_rb32(pb); // dct_algo
avio_rb32(pb); // strict_std_compliance
avio_rb32(pb); // max_b_frames
avio_rb32(pb); // mpeg_quant
avio_rb32(pb); // intra_dc_precision
avio_rb32(pb); // me_method
avio_rb32(pb); // mb_decision
avio_rb32(pb); // nsse_weight
avio_rb32(pb); // frame_skip_cmp
avio_rb64(pb); // rc_buffer_aggressivity
codecpar->codec_tag = avio_rb32(pb);
avio_r8(pb); // thread_count
avio_rb32(pb); // coder_type
avio_rb32(pb); // me_cmp
avio_rb32(pb); // me_subpel_quality
avio_rb32(pb); // me_range
avio_rb32(pb); // keyint_min
avio_rb32(pb); // scenechange_threshold
avio_rb32(pb); // b_frame_strategy
avio_rb64(pb); // qcompress
avio_rb64(pb); // qblur
avio_rb32(pb); // max_qdiff
avio_rb32(pb); // refs
break;
case AVMEDIA_TYPE_AUDIO:
codecpar->sample_rate = avio_rb32(pb);
VALIDATE_PARAMETER(sample_rate, "sample rate", codecpar->sample_rate < 0)
codecpar->channels = avio_rl16(pb);
VALIDATE_PARAMETER(channels, "number of channels", codecpar->channels < 0)
codecpar->frame_size = avio_rl16(pb);
VALIDATE_PARAMETER(frame_size, "frame size", codecpar->frame_size < 0)
break;
default:
ret = AVERROR_INVALIDDATA;
goto fail;
}
if (flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
int size = avio_rb32(pb);
if (size < 0 || size >= FF_MAX_EXTRADATA_SIZE) {
av_log(s, AV_LOG_ERROR, "Invalid extradata size %d\n", size);
ret = AVERROR_INVALIDDATA;
goto fail;
}
codecpar->extradata = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE);
if (!codecpar->extradata) {
ret = AVERROR(ENOMEM);
goto fail;
}
codecpar->extradata_size = size;
avio_read(pb, codecpar->extradata, size);
}
}
/* get until end of block reached */
while ((avio_tell(pb) % ffm->packet_size) != 0 && !pb->eof_reached)
avio_r8(pb);
/* init packet demux */
ffm->packet_ptr = ffm->packet;
ffm->packet_end = ffm->packet;
ffm->frame_offset = 0;
ffm->dts = 0;
ffm->read_state = READ_HEADER;
ffm->first_packet = 1;
avcodec_free_context(&dummy_codec);
return 0;
fail:
avcodec_free_context(&dummy_codec);
return ret;
}
/* return < 0 if eof */
static int ffm_read_packet(AVFormatContext *s, AVPacket *pkt)
{
int size;
FFMContext *ffm = s->priv_data;
int duration, ret;
switch(ffm->read_state) {
case READ_HEADER:
if ((ret = ffm_is_avail_data(s, FRAME_HEADER_SIZE+4)) < 0)
return ret;
ff_dlog(s, "pos=%08"PRIx64" spos=%"PRIx64", write_index=%"PRIx64" size=%"PRIx64"\n",
avio_tell(s->pb), s->pb->pos, ffm->write_index, ffm->file_size);
if (ffm_read_data(s, ffm->header, FRAME_HEADER_SIZE, 1) !=
FRAME_HEADER_SIZE)
return -1;
if (ffm->header[1] & FLAG_DTS)
if (ffm_read_data(s, ffm->header+16, 4, 1) != 4)
return -1;
ffm->read_state = READ_DATA;
/* fall through */
case READ_DATA:
size = AV_RB24(ffm->header + 2);
if ((ret = ffm_is_avail_data(s, size)) < 0)
return ret;
duration = AV_RB24(ffm->header + 5);
if (av_new_packet(pkt, size) < 0) {
return AVERROR(ENOMEM);
}
pkt->stream_index = ffm->header[0];
if ((unsigned)pkt->stream_index >= s->nb_streams) {
av_log(s, AV_LOG_ERROR, "invalid stream index %d\n", pkt->stream_index);
av_packet_unref(pkt);
ffm->read_state = READ_HEADER;
return -1;
}
pkt->pos = avio_tell(s->pb);
if (ffm->header[1] & FLAG_KEY_FRAME)
pkt->flags |= AV_PKT_FLAG_KEY;
ffm->read_state = READ_HEADER;
if (ffm_read_data(s, pkt->data, size, 0) != size) {
/* bad case: desynchronized packet. we cancel all the packet loading */
av_packet_unref(pkt);
return -1;
}
pkt->pts = AV_RB64(ffm->header+8);
if (ffm->header[1] & FLAG_DTS)
pkt->dts = pkt->pts - AV_RB32(ffm->header+16);
else
pkt->dts = pkt->pts;
pkt->duration = duration;
break;
}
return 0;
}
/* seek to a given time in the file. The file read pointer is
positioned at or before pts. XXX: the following code is quite
approximative */
static int ffm_seek(AVFormatContext *s, int stream_index, int64_t wanted_pts, int flags)
{
FFMContext *ffm = s->priv_data;
int64_t pos_min, pos_max, pos;
int64_t pts_min, pts_max, pts;
double pos1;
ff_dlog(s, "wanted_pts=%0.6f\n", wanted_pts / 1000000.0);
/* find the position using linear interpolation (better than
dichotomy in typical cases) */
if (ffm->write_index && ffm->write_index < ffm->file_size) {
if (get_dts(s, FFM_PACKET_SIZE) < wanted_pts) {
pos_min = FFM_PACKET_SIZE;
pos_max = ffm->write_index - FFM_PACKET_SIZE;
} else {
pos_min = ffm->write_index;
pos_max = ffm->file_size - FFM_PACKET_SIZE;
}
} else {
pos_min = FFM_PACKET_SIZE;
pos_max = ffm->file_size - FFM_PACKET_SIZE;
}
while (pos_min <= pos_max) {
pts_min = get_dts(s, pos_min);
pts_max = get_dts(s, pos_max);
if (pts_min > wanted_pts || pts_max <= wanted_pts) {
pos = pts_min > wanted_pts ? pos_min : pos_max;
goto found;
}
/* linear interpolation */
pos1 = (double)(pos_max - pos_min) * (double)(wanted_pts - pts_min) /
(double)(pts_max - pts_min);
pos = (((int64_t)pos1) / FFM_PACKET_SIZE) * FFM_PACKET_SIZE;
if (pos <= pos_min)
pos = pos_min;
else if (pos >= pos_max)
pos = pos_max;
pts = get_dts(s, pos);
/* check if we are lucky */
if (pts == wanted_pts) {
goto found;
} else if (pts > wanted_pts) {
pos_max = pos - FFM_PACKET_SIZE;
} else {
pos_min = pos + FFM_PACKET_SIZE;
}
}
pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
found:
if (ffm_seek1(s, pos) < 0)
return -1;
/* reset read state */
ffm->read_state = READ_HEADER;
ffm->packet_ptr = ffm->packet;
ffm->packet_end = ffm->packet;
ffm->first_packet = 1;
return 0;
}
static int ffm_probe(AVProbeData *p)
{
if (
p->buf[0] == 'F' && p->buf[1] == 'F' && p->buf[2] == 'M' &&
(p->buf[3] == '1' || p->buf[3] == '2'))
return AVPROBE_SCORE_MAX + 1;
return 0;
}
static const AVOption options[] = {
{"server_attached", NULL, offsetof(FFMContext, server_attached), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, AV_OPT_FLAG_EXPORT },
{"ffm_write_index", NULL, offsetof(FFMContext, write_index), AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, AV_OPT_FLAG_EXPORT },
{"ffm_file_size", NULL, offsetof(FFMContext, file_size), AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, AV_OPT_FLAG_EXPORT },
{ NULL },
};
static const AVClass ffm_class = {
.class_name = "ffm demuxer",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};
AVInputFormat ff_ffm_demuxer = {
.name = "ffm",
.long_name = NULL_IF_CONFIG_SMALL("FFM (FFserver live feed)"),
.priv_data_size = sizeof(FFMContext),
.read_probe = ffm_probe,
.read_header = ffm_read_header,
.read_packet = ffm_read_packet,
.read_seek = ffm_seek,
.priv_class = &ffm_class,
};

362
libavformat/ffmenc.c
View File

@ -1,362 +0,0 @@
/*
* FFM (ffserver live feed) muxer
* Copyright (c) 2001 Fabrice Bellard
*
* 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 "libavutil/intreadwrite.h"
#include "libavutil/intfloat.h"
#include "libavutil/avassert.h"
#include "libavutil/parseutils.h"
#include "libavutil/opt.h"
#include "avformat.h"
#include "avio_internal.h"
#include "internal.h"
#include "ffm.h"
static void flush_packet(AVFormatContext *s)
{
FFMContext *ffm = s->priv_data;
int fill_size, h;
AVIOContext *pb = s->pb;
fill_size = ffm->packet_end - ffm->packet_ptr;
memset(ffm->packet_ptr, 0, fill_size);
av_assert1(avio_tell(pb) % ffm->packet_size == 0);
/* put header */
avio_wb16(pb, PACKET_ID);
avio_wb16(pb, fill_size);
avio_wb64(pb, ffm->dts);
h = ffm->frame_offset;
if (ffm->first_packet)
h |= 0x8000;
avio_wb16(pb, h);
avio_write(pb, ffm->packet, ffm->packet_end - ffm->packet);
avio_flush(pb);
/* prepare next packet */
ffm->frame_offset = 0; /* no key frame */
ffm->packet_ptr = ffm->packet;
ffm->first_packet = 0;
}
/* 'first' is true if first data of a frame */
static void ffm_write_data(AVFormatContext *s,
const uint8_t *buf, int size,
int64_t dts, int header)
{
FFMContext *ffm = s->priv_data;
int len;
if (header && ffm->frame_offset == 0) {
ffm->frame_offset = ffm->packet_ptr - ffm->packet + FFM_HEADER_SIZE;
ffm->dts = dts;
}
/* write as many packets as needed */
while (size > 0) {
len = ffm->packet_end - ffm->packet_ptr;
if (len > size)
len = size;
memcpy(ffm->packet_ptr, buf, len);
ffm->packet_ptr += len;
buf += len;
size -= len;
if (ffm->packet_ptr >= ffm->packet_end)
flush_packet(s);
}
}
static void write_header_chunk(AVIOContext *pb, AVIOContext *dpb, unsigned id)
{
uint8_t *dyn_buf;
int dyn_size= avio_close_dyn_buf(dpb, &dyn_buf);
avio_wb32(pb, id);
avio_wb32(pb, dyn_size);
avio_write(pb, dyn_buf, dyn_size);
av_free(dyn_buf);
}
static int ffm_write_header_codec_ctx(AVIOContext *pb, AVCodecParameters *ctxpar, unsigned tag, int type)
{
AVIOContext *tmp;
char *buf = NULL;
int ret, need_coma = 0;
AVCodecContext *ctx = NULL;
#define SKIP_DEFAULTS AV_OPT_SERIALIZE_SKIP_DEFAULTS
#define OPT_FLAGS_EXACT AV_OPT_SERIALIZE_OPT_FLAGS_EXACT
#define ENC AV_OPT_FLAG_ENCODING_PARAM
if (avio_open_dyn_buf(&tmp) < 0)
return AVERROR(ENOMEM);
// AVCodecParameters does not suport AVOptions, we thus must copy it over to a context that does
// otherwise it could be used directly and this would be much simpler
ctx = avcodec_alloc_context3(NULL);
if (!ctx) {
ret = AVERROR(ENOMEM);
goto fail;
}
avcodec_parameters_to_context(ctx, ctxpar);
if ((ret = av_opt_serialize(ctx, ENC | type, SKIP_DEFAULTS, &buf, '=', ',')) < 0)
goto fail;
if (buf && strlen(buf)) {
avio_write(tmp, buf, strlen(buf));
av_freep(&buf);
need_coma = 1;
}
if ((ret = av_opt_serialize(ctx, 0, SKIP_DEFAULTS | OPT_FLAGS_EXACT, &buf, '=', ',')) < 0)
goto fail;
if (buf && strlen(buf)) {
if (need_coma)
avio_w8(tmp, ',');
avio_write(tmp, buf, strlen(buf));
}
av_freep(&buf);
avio_w8(tmp, 0);
write_header_chunk(pb, tmp, tag);
avcodec_free_context(&ctx);
return 0;
fail:
av_free(buf);
ffio_free_dyn_buf(&tmp);
avcodec_free_context(&ctx);
return ret;
#undef SKIP_DEFAULTS
#undef OPT_FLAGS_EXACT
#undef ENC
}
static int ffm_write_recommended_config(AVIOContext *pb, AVCodecParameters *codecpar, unsigned tag,
const char *configuration)
{
int ret;
const AVCodec *enc = avcodec_find_encoder(codecpar->codec_id);
AVIOContext *tmp;
AVDictionaryEntry *t = NULL;
AVDictionary *all = NULL, *comm = NULL, *prv = NULL;
char *buf = NULL;
if (!enc || !enc->priv_class || !enc->priv_data_size) {
/* codec is not known/has no private options, so save everything as common options */
if (avio_open_dyn_buf(&tmp) < 0)
return AVERROR(ENOMEM);
avio_put_str(tmp, configuration);
write_header_chunk(pb, tmp, tag);
return 0;
}
if ((ret = av_dict_parse_string(&all, configuration, "=", ",", 0)) < 0)
return ret;
while ((t = av_dict_get(all, "", t, AV_DICT_IGNORE_SUFFIX))) {
if (av_opt_find((void *)&enc->priv_class, t->key, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ)) {
if ((ret = av_dict_set(&prv, t->key, t->value, 0)) < 0)
goto fail;
} else if ((ret = av_dict_set(&comm, t->key, t->value, 0)) < 0)
goto fail;
}
if (comm) {
if ((ret = av_dict_get_string(comm, &buf, '=', ',')) < 0 ||
(ret = avio_open_dyn_buf(&tmp)) < 0)
goto fail;
avio_put_str(tmp, buf);
av_freep(&buf);
write_header_chunk(pb, tmp, tag);
}
if (prv) {
if ((ret = av_dict_get_string(prv, &buf, '=', ',')) < 0 ||
(ret = avio_open_dyn_buf(&tmp)) < 0)
goto fail;
avio_put_str(tmp, buf);
write_header_chunk(pb, tmp, MKBETAG('C', 'P', 'R', 'V'));
}
fail:
av_free(buf);
av_dict_free(&all);
av_dict_free(&comm);
av_dict_free(&prv);
return ret;
}
static int ffm_write_header(AVFormatContext *s)
{
FFMContext *ffm = s->priv_data;
AVStream *st;
AVIOContext *pb = s->pb;
AVCodecParameters *codecpar;
int bit_rate, i, ret;
if ((ret = ff_parse_creation_time_metadata(s, &ffm->start_time, 0)) < 0)
return ret;
ffm->packet_size = FFM_PACKET_SIZE;
/* header */
avio_wl32(pb, MKTAG('F', 'F', 'M', '2'));
avio_wb32(pb, ffm->packet_size);
avio_wb64(pb, 0); /* current write position */
if(avio_open_dyn_buf(&pb) < 0)
return AVERROR(ENOMEM);
avio_wb32(pb, s->nb_streams);
bit_rate = 0;
for(i=0;i<s->nb_streams;i++) {
st = s->streams[i];
bit_rate += st->codecpar->bit_rate;
}
avio_wb32(pb, bit_rate);
write_header_chunk(s->pb, pb, MKBETAG('M', 'A', 'I', 'N'));
/* list of streams */
for(i=0;i<s->nb_streams;i++) {
int flags = 0;
st = s->streams[i];
avpriv_set_pts_info(st, 64, 1, 1000000);
if(avio_open_dyn_buf(&pb) < 0)
return AVERROR(ENOMEM);
codecpar = st->codecpar;
/* generic info */
avio_wb32(pb, codecpar->codec_id);
avio_w8(pb, codecpar->codec_type);
avio_wb32(pb, codecpar->bit_rate);
if (codecpar->extradata_size)
flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
// If the user is not providing us with a configuration we have to fill it in as we cannot access the encoder
if (!st->recommended_encoder_configuration) {
if (s->flags & AVFMT_FLAG_BITEXACT)
flags |= AV_CODEC_FLAG_BITEXACT;
}
avio_wb32(pb, flags);
avio_wb32(pb, 0); // flags2
avio_wb32(pb, 0); // debug
if (codecpar->extradata_size) {
avio_wb32(pb, codecpar->extradata_size);
avio_write(pb, codecpar->extradata, codecpar->extradata_size);
}
write_header_chunk(s->pb, pb, MKBETAG('C', 'O', 'M', 'M'));
/* specific info */
switch(codecpar->codec_type) {
case AVMEDIA_TYPE_VIDEO:
if (st->recommended_encoder_configuration) {
av_log(NULL, AV_LOG_DEBUG, "writing recommended configuration: %s\n",
st->recommended_encoder_configuration);
if ((ret = ffm_write_recommended_config(s->pb, codecpar, MKBETAG('S', '2', 'V', 'I'),
st->recommended_encoder_configuration)) < 0)
return ret;
} else if ((ret = ffm_write_header_codec_ctx(s->pb, codecpar, MKBETAG('S', '2', 'V', 'I'), AV_OPT_FLAG_VIDEO_PARAM)) < 0)
return ret;
break;
case AVMEDIA_TYPE_AUDIO:
if (st->recommended_encoder_configuration) {
av_log(NULL, AV_LOG_DEBUG, "writing recommended configuration: %s\n",
st->recommended_encoder_configuration);
if ((ret = ffm_write_recommended_config(s->pb, codecpar, MKBETAG('S', '2', 'A', 'U'),
st->recommended_encoder_configuration)) < 0)
return ret;
} else if ((ret = ffm_write_header_codec_ctx(s->pb, codecpar, MKBETAG('S', '2', 'A', 'U'), AV_OPT_FLAG_AUDIO_PARAM)) < 0)
return ret;
break;
default:
return -1;
}
}
pb = s->pb;
avio_wb64(pb, 0); // end of header
/* flush until end of block reached */
while ((avio_tell(pb) % ffm->packet_size) != 0)
avio_w8(pb, 0);
avio_flush(pb);
/* init packet mux */
ffm->packet_ptr = ffm->packet;
ffm->packet_end = ffm->packet + ffm->packet_size - FFM_HEADER_SIZE;
av_assert0(ffm->packet_end >= ffm->packet);
ffm->frame_offset = 0;
ffm->dts = 0;
ffm->first_packet = 1;
return 0;
}
static int ffm_write_packet(AVFormatContext *s, AVPacket *pkt)
{
FFMContext *ffm = s->priv_data;
int64_t dts;
uint8_t header[FRAME_HEADER_SIZE+4];
int header_size = FRAME_HEADER_SIZE;
dts = ffm->start_time + pkt->dts;
/* packet size & key_frame */
header[0] = pkt->stream_index;
header[1] = 0;
if (pkt->flags & AV_PKT_FLAG_KEY)
header[1] |= FLAG_KEY_FRAME;
AV_WB24(header+2, pkt->size);
AV_WB24(header+5, pkt->duration);
AV_WB64(header+8, ffm->start_time + pkt->pts);
if (pkt->pts != pkt->dts) {
header[1] |= FLAG_DTS;
AV_WB32(header+16, pkt->pts - pkt->dts);
header_size += 4;
}
ffm_write_data(s, header, header_size, dts, 1);
ffm_write_data(s, pkt->data, pkt->size, dts, 0);
return 0;
}
static int ffm_write_trailer(AVFormatContext *s)
{
FFMContext *ffm = s->priv_data;
/* flush packets */
if (ffm->packet_ptr > ffm->packet)
flush_packet(s);
return 0;
}
AVOutputFormat ff_ffm_muxer = {
.name = "ffm",
.long_name = NULL_IF_CONFIG_SMALL("FFM (FFserver live feed)"),
.extensions = "ffm",
.priv_data_size = sizeof(FFMContext),
.audio_codec = AV_CODEC_ID_MP2,
.video_codec = AV_CODEC_ID_MPEG1VIDEO,
.write_header = ffm_write_header,
.write_packet = ffm_write_packet,
.write_trailer = ffm_write_trailer,
.flags = AVFMT_TS_NEGATIVE,
};