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-rw-r--r--libavformat/ffmenc.c362
1 files changed, 0 insertions, 362 deletions
diff --git a/libavformat/ffmenc.c b/libavformat/ffmenc.c
deleted file mode 100644
index ef7dc3a031..0000000000
--- a/libavformat/ffmenc.c
+++ /dev/null
@@ -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,
-};
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