On 12/29/2014 06:08 PM, Michael Niedermayer wrote:
> On Mon, Dec 29, 2014 at 01:31:18PM +0530, Anshul wrote:
>> On December 18, 2014 4:08:56 PM IST, Michael Niedermayer
>> <[email protected]> wrote:
>>> On Wed, Dec 17, 2014 at 11:53:10PM +0530, Anshul wrote:
>>>> Hi
>>>>
>>>> I was doing development of scte-35 message cue in ffmpeg.
>>>>
>>>> I have attached a draft patch.
>>>>
>>>> I would like to have some comments of this community.
>>>> -Anshul
>>>> libavcodec/Makefile | 2 ++
>>>> libavcodec/allcodecs.c | 2 ++
>>>> libavcodec/avcodec.h | 1 +
>>>> libavcodec/codec_desc.c | 6 ++++++
>>>> libavformat/mpegts.c | 40
>>> +++++++++++++++++++++++++++++++++-------
>>>> 5 files changed, 44 insertions(+), 7 deletions(-)
>>>> 4b584484a54a78c130c4bbaa48c38551b3ca75fb
>>> 0001-trying-muxing-demuxing-of-scte_35-message-cue.patch
>>>> From 2ff4edfdeae131df72ea19005eb6ad85d5332f7c Mon Sep 17 00:00:00
>>> 2001
>>>> From: Anshul Maheshwari <[email protected]>
>>>> Date: Wed, 17 Dec 2014 22:13:10 +0530
>>>> Subject: [PATCH] trying muxing demuxing of scte_35 message cue
>>>>
>>>> ---
>>>> libavcodec/Makefile | 2 ++
>>>> libavcodec/allcodecs.c | 2 ++
>>>> libavcodec/avcodec.h | 1 +
>>>> libavcodec/codec_desc.c | 6 ++++++
>>>> libavformat/mpegts.c | 40
>>> +++++++++++++++++++++++++++++++++-------
>>>> 5 files changed, 44 insertions(+), 7 deletions(-)
>>>>
>>>> diff --git a/libavcodec/Makefile b/libavcodec/Makefile
>>>> index b35a796..9d2a49f 100644
>>>> --- a/libavcodec/Makefile
>>>> +++ b/libavcodec/Makefile
>>>> @@ -408,6 +408,7 @@ OBJS-$(CONFIG_SAMI_DECODER) +=
>>> samidec.o ass.o
>>>> OBJS-$(CONFIG_S302M_DECODER) += s302m.o
>>>> OBJS-$(CONFIG_S302M_ENCODER) += s302menc.o
>>>> OBJS-$(CONFIG_SANM_DECODER) += sanm.o
>>>> +OBJS-$(CONFIG_SCTE_35_DECODER) += scte_35.o
>>> this patch doesnt contain a scte_35.c
>>> did you forget git add ?
>>>
>>> [...]
>> I have attached another patch, still its draft.
>> I do want some opinion about the approach of this development.
>>
>> to use this patch, one can pass below command
>> ./ffmpeg -loglevel debug -i ~/test_videos/mpegwithscte35.ts -dcodec
>> cue_xml -map 0:0 -f rawvideo some.raw
>>
>> There still some issue with this patch, like I have disabled estimate
>> timing of all stream since data stream does not have similar timing, i
>> will add condition there.
>>
>> FFmpeg hangs after running command, it might be because of EOF not
>> handled properly, looking at the issue.
>>
>>
>> My vision for this patch is that we can add custom advertisement
>> if stream have scte-cue.
>>
>> This patch might also help end-user to remove advertisements automatically.
>>
>> for broadcaster it will help to show advertisement in local language.
>> or for local product.
>> just now I am very far away from my goal but will not always be.
>>
>>
>> This patch have all files which I have developed.
> ar: libavcodec/scte_35.o: No such file or directory
>
> [...]
>
>
>
> _______________________________________________
> ffmpeg-devel mailing list
> [email protected]
> http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
I am sorry, I attached the wrong patch file.
-Anshul
>From 6e04f65c33c4d4f873bbadabcc9d1d8464d49314 Mon Sep 17 00:00:00 2001
From: Anshul Maheshwari <[email protected]>
Date: Mon, 29 Dec 2014 12:42:41 +0530
Subject: [PATCH] trying handle scte_35 messagecue
---
ffmpeg.c | 40 +++++++
ffmpeg_opt.c | 9 +-
libavcodec/Makefile | 2 +
libavcodec/allcodecs.c | 2 +
libavcodec/avcodec.h | 17 +++
libavcodec/codec_desc.c | 12 ++
libavcodec/cue_xml.c | 196 ++++++++++++++++++++++++++++++++
libavcodec/scte_35.c | 294 ++++++++++++++++++++++++++++++++++++++++++++++++
libavcodec/scte_35.h | 31 +++++
libavcodec/utils.c | 33 +++++-
libavformat/avformat.h | 16 +++
libavformat/mpegts.c | 44 ++++++--
libavformat/utils.c | 3 +-
libavutil/avstring.c | 26 ++++-
libavutil/avstring.h | 15 +++
15 files changed, 724 insertions(+), 16 deletions(-)
create mode 100644 libavcodec/cue_xml.c
create mode 100644 libavcodec/scte_35.c
create mode 100644 libavcodec/scte_35.h
diff --git a/ffmpeg.c b/ffmpeg.c
index 1fd0ece..4817004 100644
--- a/ffmpeg.c
+++ b/ffmpeg.c
@@ -2002,6 +2002,41 @@ fail:
return err < 0 ? err : ret;
}
+static int transcode_data(InputStream *ist, AVPacket *pkt, int *got_output)
+{
+ AVCodecContext *dec = ist->dec_ctx;
+ enum AVCodecID in_codec_id = AV_CODEC_ID_NONE;
+ AVData input;
+ AVData output;
+ AVPacket outpkt;
+ int ret, i;
+
+ if (dec->codec)
+ in_codec_id = dec->codec->id;
+
+ input.valid = 0;
+ update_benchmark(NULL);
+ ret = avcodec_decode_data(dec, &input, pkt);
+ update_benchmark("decode_data %d.%d", ist->file_index, ist->st->index);
+ *got_output = input.valid;
+
+ for (i = 0; i < nb_output_streams && *got_output; i++) {
+ OutputStream *ost = output_streams[i];
+
+ if (!check_output_constraints(ist, ost) || !ost->encoding_needed
+ || ost->enc->type != AVMEDIA_TYPE_DATA)
+ continue;
+ ret = avcodec_encode_data(output_streams[i]->enc_ctx, &input, &output, in_codec_id);
+ av_init_packet(&outpkt);
+ outpkt.data = output.data;
+ outpkt.size = output.len;
+ write_frame(output_files[ost->file_index]->ctx, &outpkt, ost);
+
+ }
+
+ return ret;
+
+}
static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
{
AVSubtitle subtitle;
@@ -2142,6 +2177,9 @@ static int process_input_packet(InputStream *ist, const AVPacket *pkt)
case AVMEDIA_TYPE_SUBTITLE:
ret = transcode_subtitles(ist, &avpkt, &got_output);
break;
+ case AVMEDIA_TYPE_DATA:
+ ret = transcode_data(ist, &avpkt, &got_output);
+ break;
default:
return -1;
}
@@ -2827,6 +2865,8 @@ static int transcode_init(void)
enc_ctx->height = input_streams[ost->source_index]->st->codec->height;
}
break;
+ case AVMEDIA_TYPE_DATA:
+ break;
default:
abort();
break;
diff --git a/ffmpeg_opt.c b/ffmpeg_opt.c
index 27e0890..2a265d3 100644
--- a/ffmpeg_opt.c
+++ b/ffmpeg_opt.c
@@ -794,6 +794,7 @@ static int open_input_file(OptionsContext *o, const char *filename)
char * video_codec_name = NULL;
char * audio_codec_name = NULL;
char *subtitle_codec_name = NULL;
+ char * data_codec_name = NULL;
if (o->format) {
if (!(file_iformat = av_find_input_format(o->format))) {
@@ -853,6 +854,8 @@ static int open_input_file(OptionsContext *o, const char *filename)
find_codec_or_die(audio_codec_name , AVMEDIA_TYPE_AUDIO , 0)->id : AV_CODEC_ID_NONE;
ic->subtitle_codec_id= subtitle_codec_name ?
find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0)->id : AV_CODEC_ID_NONE;
+ ic->data_codec_id = data_codec_name ?
+ find_codec_or_die(data_codec_name, AVMEDIA_TYPE_DATA, 0)->id : AV_CODEC_ID_NONE;
if (video_codec_name)
av_format_set_video_codec (ic, find_codec_or_die(video_codec_name , AVMEDIA_TYPE_VIDEO , 0));
@@ -860,6 +863,8 @@ static int open_input_file(OptionsContext *o, const char *filename)
av_format_set_audio_codec (ic, find_codec_or_die(audio_codec_name , AVMEDIA_TYPE_AUDIO , 0));
if (subtitle_codec_name)
av_format_set_subtitle_codec(ic, find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0));
+ if (data_codec_name)
+ av_format_set_data_codec(ic, find_codec_or_die(data_codec_name, AVMEDIA_TYPE_DATA, 0));
ic->flags |= AVFMT_FLAG_NONBLOCK;
ic->interrupt_callback = int_cb;
@@ -1501,10 +1506,6 @@ static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc, int
OutputStream *ost;
ost = new_output_stream(o, oc, AVMEDIA_TYPE_DATA, source_index);
- if (!ost->stream_copy) {
- av_log(NULL, AV_LOG_FATAL, "Data stream encoding not supported yet (only streamcopy)\n");
- exit_program(1);
- }
return ost;
}
diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index b35a796..f393da5 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -290,6 +290,7 @@ OBJS-$(CONFIG_LOCO_DECODER) += loco.o
OBJS-$(CONFIG_MACE3_DECODER) += mace.o
OBJS-$(CONFIG_MACE6_DECODER) += mace.o
OBJS-$(CONFIG_MDEC_DECODER) += mdec.o mpeg12.o mpeg12data.o
+OBJS-$(CONFIG_CUE_XML_ENCODER) += cue_xml.o
OBJS-$(CONFIG_METASOUND_DECODER) += metasound.o metasound_data.o \
twinvq.o
OBJS-$(CONFIG_MICRODVD_DECODER) += microdvddec.o ass.o
@@ -408,6 +409,7 @@ OBJS-$(CONFIG_SAMI_DECODER) += samidec.o ass.o
OBJS-$(CONFIG_S302M_DECODER) += s302m.o
OBJS-$(CONFIG_S302M_ENCODER) += s302menc.o
OBJS-$(CONFIG_SANM_DECODER) += sanm.o
+OBJS-$(CONFIG_SCTE_35_DECODER) += scte_35.o
OBJS-$(CONFIG_SGI_DECODER) += sgidec.o
OBJS-$(CONFIG_SGI_ENCODER) += sgienc.o rle.o
OBJS-$(CONFIG_SGIRLE_DECODER) += sgirledec.o
diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c
index 36bbfed..1392582 100644
--- a/libavcodec/allcodecs.c
+++ b/libavcodec/allcodecs.c
@@ -535,6 +535,8 @@ void avcodec_register_all(void)
REGISTER_ENCODER(LIBAACPLUS, libaacplus);
/* text */
+ REGISTER_DECODER(SCTE_35, scte_35)
+ REGISTER_ENCODER(CUE_XML, cue_xml);
REGISTER_DECODER(BINTEXT, bintext);
REGISTER_DECODER(XBIN, xbin);
REGISTER_DECODER(IDF, idf);
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index eac3fc7..e5f3d06 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -522,6 +522,8 @@ enum AVCodecID {
/* other specific kind of codecs (generally used for attachments) */
AV_CODEC_ID_FIRST_UNKNOWN = 0x18000, ///< A dummy ID pointing at the start of various fake codecs.
AV_CODEC_ID_TTF = 0x18000,
+ AV_CODEC_ID_SCTE_35 = MKBETAG('C','U','E','I'),
+ AV_CODEC_ID_CUE_XML = MKBETAG('C','U','E','X'),
AV_CODEC_ID_BINTEXT = MKBETAG('B','T','X','T'),
AV_CODEC_ID_XBIN = MKBETAG('X','B','I','N'),
AV_CODEC_ID_IDF = MKBETAG( 0 ,'I','D','F'),
@@ -3149,6 +3151,13 @@ typedef struct AVCodecDefault AVCodecDefault;
struct AVSubtitle;
+typedef struct AVData {
+ void *data;
+ int len;
+ int ref_count;
+ int valid;
+} AVData;
+
/**
* AVCodec.
*/
@@ -3225,6 +3234,8 @@ typedef struct AVCodec {
int (*init)(AVCodecContext *);
int (*encode_sub)(AVCodecContext *, uint8_t *buf, int buf_size,
const struct AVSubtitle *sub);
+ int (*encode_data)(AVCodecContext *avctx, const AVData *input, AVData *output,
+ enum AVCodecID in_codec_id);
/**
* Encode data to an AVPacket.
*
@@ -3238,6 +3249,7 @@ typedef struct AVCodec {
int (*encode2)(AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame,
int *got_packet_ptr);
int (*decode)(AVCodecContext *, void *outdata, int *outdata_size, AVPacket *avpkt);
+ int (*decode_data)(AVCodecContext *,AVData *output, const AVPacket *avpkt);
int (*close)(AVCodecContext *);
/**
* Flush buffers.
@@ -4181,6 +4193,9 @@ int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
int *got_sub_ptr,
AVPacket *avpkt);
+int avcodec_decode_data(AVCodecContext *avctx,
+ AVData *output,
+ const AVPacket *avpkt);
/**
* @defgroup lavc_parsing Frame parsing
* @{
@@ -4569,6 +4584,8 @@ int avcodec_encode_video2(AVCodecContext *avctx, AVPacket *avpkt,
int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
const AVSubtitle *sub);
+int avcodec_encode_data(AVCodecContext *avctx,const AVData *input, AVData *output,
+ enum AVCodecID in_codec_id);
/**
diff --git a/libavcodec/codec_desc.c b/libavcodec/codec_desc.c
index eeb4505..eb24f55 100644
--- a/libavcodec/codec_desc.c
+++ b/libavcodec/codec_desc.c
@@ -2731,6 +2731,18 @@ static const AVCodecDescriptor codec_descriptors[] = {
.long_name = NULL_IF_CONFIG_SMALL("binary data"),
.mime_types= MT("application/octet-stream"),
},
+ {
+ .id = AV_CODEC_ID_SCTE_35,
+ .type = AVMEDIA_TYPE_DATA,
+ .name = "scte_35",
+ .long_name = NULL_IF_CONFIG_SMALL("SCTE 35 Message Queue"),
+ },
+ {
+ .id = AV_CODEC_ID_CUE_XML,
+ .type = AVMEDIA_TYPE_DATA,
+ .name = "cue_xml",
+ .long_name = NULL_IF_CONFIG_SMALL("Message Queue to Insert Add"),
+ },
/* deprecated codec ids */
{
diff --git a/libavcodec/cue_xml.c b/libavcodec/cue_xml.c
new file mode 100644
index 0000000..4da97d5
--- /dev/null
+++ b/libavcodec/cue_xml.c
@@ -0,0 +1,196 @@
+/*
+ * SCTE 35 Cue Xml encoder
+ * Copyright (c) 2014 Anshul Maheshwaari
+ *
+ * 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 "avcodec.h"
+#include "libavutil/opt.h"
+#include "libavutil/bprint.h"
+#include "scte_35.h"
+
+struct varList{
+ char *var;
+ char *value;
+ struct varList *next;
+};
+struct node {
+ char *name;
+ struct varList *vlist;
+ struct node *child;
+ struct node *parent;
+ struct node *sibling;
+};
+
+struct cue_xml_ctx {
+ AVClass *class;
+ struct node xml_tree;
+};
+static void init_node(struct node* n,const char *name)
+{
+ n->name = av_strdup(name);
+ n->vlist = NULL;
+ n->child = NULL;
+ n->parent = NULL;
+ n->sibling = NULL;
+}
+static void add_child(struct node *parent, struct node* n)
+{
+ struct node *tmp;
+
+ /* add to parent node
+ * parent keep only address of one child , other children are kept in sibling */
+ if(!parent->child)
+ parent->child = n;
+ else {
+ tmp = parent->child;
+ while(tmp->sibling) {
+ tmp = tmp->sibling;
+ }
+ tmp->sibling = n;
+ }
+ n->parent = parent;
+}
+
+/**
+ * memory of value need to be preallocated
+ */
+static int add_varval_pair(struct node* n,const char *var,const char *val)
+{
+ struct varList *pair;
+
+ pair = av_mallocz(sizeof(*pair));
+ if(!pair)
+ return AVERROR(ENOMEM);
+
+ pair->var = av_strdup(var);
+ pair->value = val;
+
+ if(!n->vlist) {
+ n->vlist = pair;
+ } else {
+ struct varList *npair = n->vlist;
+ while (npair->next) {
+ npair = npair->next;
+ }
+ npair->next = pair;
+ }
+ return 0;
+
+}
+static int add_varval_pair_char(struct node* n,const char *var,const char *val)
+{
+ char *val2 = av_strdup(val);
+ return add_varval_pair(n, var, val2);
+}
+
+static int add_varval_pair_uint32_t(struct node* n,const char *var,const uint32_t val)
+{
+ char *val2 = av_uint2str(val);
+ return add_varval_pair(n, var, val2);
+}
+
+static int add_varval_pair_uint64_t(struct node* n,const char *var,const uint64_t val)
+{
+ char *val2 = av_uint64_t2str(val);
+ return add_varval_pair(n, var, val2);
+}
+static void write_tree_as_data(struct node* root, AVData *data)
+{
+ AVBPrint buffer;
+ struct node *tmp = root->child;
+ struct node *leaf;
+ av_bprint_init(&buffer, 0, AV_BPRINT_SIZE_UNLIMITED);
+
+ while(tmp) {
+ struct varList *npair = tmp->vlist;
+ av_bprintf(&buffer, "<%s", tmp->name);
+ while(npair) {
+ av_bprintf(&buffer, " %s=%s", npair->var, npair->value);
+ npair = npair->next;
+ }
+ av_bprintf(&buffer, ">\n");
+ leaf = tmp;
+ tmp = tmp->child;
+ }
+ tmp = leaf;
+ while(tmp->parent) {
+ av_bprintf(&buffer, "</%s>\n", tmp->name);
+ tmp = tmp->parent;
+ }
+ data->data = av_strdup(buffer.str);
+ data->len = strlen(buffer.str);
+ data->valid = 1;
+
+ av_log(NULL, AV_LOG_DEBUG, "%s\n",buffer.str);
+ av_bprint_finalize( &buffer, NULL);
+
+}
+static av_cold int init_encoder(AVCodecContext *avctx)
+{
+ struct cue_xml_ctx *ctx = avctx->priv_data;
+ init_node(&ctx->xml_tree,"scte35");
+
+ return 0;
+}
+static av_cold int close_encoder(AVCodecContext *avctx)
+{
+ struct cue_xml_ctx *ctx = avctx->priv_data;
+ return 0;
+}
+
+static int encode(AVCodecContext *avctx, const AVData *input, AVData *output,
+ enum AVCodecID in_codec_id)
+{
+ struct scte_35_interface *interface;
+ struct node event;
+ struct cue_xml_ctx *ctx = avctx->priv_data;
+
+ if(in_codec_id != AV_CODEC_ID_SCTE_35)
+ return -1;
+
+ interface = input->data;
+ init_node(&event,"event");
+ add_varval_pair_uint32_t(&event, "event_id", interface->event_id);
+ add_varval_pair_uint32_t(&event, "duration", interface->duration);
+ add_varval_pair_uint64_t(&event, "pts", interface->pts);
+ add_child(&ctx->xml_tree, &event);
+
+ write_tree_as_data(&ctx->xml_tree, output);
+ return 0;
+}
+static const AVOption options[] = {
+ {NULL}
+};
+static const AVClass cue_xml_dec_class = {
+ .class_name = "SCTE 35 Decoder",
+ .item_name = av_default_item_name,
+ .option = options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+
+AVCodec ff_cue_xml_encoder = {
+ .name = "cue_xml",
+ .long_name = NULL_IF_CONFIG_SMALL("XML Message Queue Ad Insertion"),
+ .type = AVMEDIA_TYPE_DATA,
+ .id = AV_CODEC_ID_CUE_XML,
+ .priv_data_size = sizeof(struct cue_xml_ctx),
+ .init = init_encoder,
+ .close = close_encoder,
+ .encode_data = encode,
+ .priv_class = &cue_xml_dec_class,
+};
diff --git a/libavcodec/scte_35.c b/libavcodec/scte_35.c
new file mode 100644
index 0000000..2b3af27
--- /dev/null
+++ b/libavcodec/scte_35.c
@@ -0,0 +1,294 @@
+/*
+ * SCTE 35 decoder
+ * Copyright (c) 2014 Anshul Maheshwaari
+ *
+ * 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 "avcodec.h"
+#include "bytestream.h"
+#include "libavutil/opt.h"
+#include "libavcodec/get_bits.h"
+#include "libavcodec/scte_35.h"
+
+#define SCTE_CMD_NULL 0x00
+#define SCTE_CMD_SCHEDULE 0x04
+#define SCTE_CMD_INSERT 0x05
+#define SCTE_CMD_SIGNAL 0x06
+#define SCTE_CMD_BANDWIDTH_RESERVATION 0x07
+struct scte_35_ctx {
+ AVClass *class;
+ uint64_t pts_adjustment;
+ uint32_t event_id;
+ int component_tag;
+ int64_t duration;
+ uint16_t u_program_id;
+ uint8_t avail_num;
+ uint8_t avail_expect;
+ /* flags */
+ int splice_event_cancel_indicator;
+ int out_of_network_indicator;
+ int program_splice_flag;
+ int duration_flag;
+ int splice_immediate_flag;
+ int auto_return;
+};
+static av_cold int init_decoder(AVCodecContext *avctx)
+{
+ struct scte_35_ctx *ctx = avctx->priv_data;
+ return 0;
+}
+static av_cold int close_decoder(AVCodecContext *avctx)
+{
+ struct scte_35_ctx *ctx = avctx->priv_data;
+ return 0;
+}
+
+/**
+ * save the parsed time in ctx pts_time
+ @return length of buffer consumed
+*/
+static int parse_splice_time(struct scte_35_ctx *ctx, const uint8_t *buf, uint64_t *pts)
+{
+ GetBitContext gb;
+ int ret;
+ init_get_bits(&gb, buf, 40);
+ /* is time specified */
+ ret = get_bits(&gb, 1);
+ if(ret) {
+ skip_bits(&gb, 6);
+ *pts = get_bits64(&gb,33) + ctx->pts_adjustment;
+ av_log(ctx, AV_LOG_DEBUG, "time = %lld\n", *pts/90000);
+ return 5;
+ } else {
+ skip_bits(&gb, 7);
+ return 1;
+ }
+}
+static int parse_schedule_cmd(struct scte_35_ctx *ctx, const uint8_t *buf)
+{
+ const uint8_t *sbuf = buf;
+ av_log(ctx, AV_LOG_DEBUG, "Schedule cmd\n");
+ return buf - sbuf;
+}
+/**
+ @return length of buffer used
+ */
+static int parse_insert_cmd(struct scte_35_ctx *ctx, const uint8_t *buf, AVData *output)
+{
+ GetBitContext gb;
+ int ret;
+ const uint8_t *sbuf = buf;
+ struct scte_35_interface *iface;
+
+ iface = av_mallocz(sizeof(struct scte_35_interface));
+ if(!iface)
+ return AVERROR(ENOMEM);
+ output->data = iface;
+ output->valid = 1;
+
+ av_log(ctx, AV_LOG_DEBUG, "Insert cmd\n");
+ ctx->event_id = AV_RB32(buf);
+ av_log(ctx, AV_LOG_DEBUG, "event_id = %x\n", ctx->event_id);
+ buf +=4;
+ ctx->splice_event_cancel_indicator = *buf & 0x80;
+ av_log(ctx, AV_LOG_DEBUG, "splice_event_cancel_indicator = %d\n", ctx->splice_event_cancel_indicator);
+ buf++;
+
+ iface->event_id = ctx->event_id;
+ if (!ctx->splice_event_cancel_indicator) {
+ init_get_bits(&gb, buf, 8);
+ ctx->out_of_network_indicator = get_bits(&gb, 1);
+ ctx->program_splice_flag = get_bits(&gb, 1);
+ ctx->duration_flag = get_bits(&gb, 1);
+ ctx->splice_immediate_flag = get_bits(&gb, 1);
+ skip_bits(&gb, 4);
+
+ }
+ buf++;
+
+
+ av_log(ctx, AV_LOG_DEBUG, "out_of_network_indicator = %d\n", ctx->out_of_network_indicator);
+ av_log(ctx, AV_LOG_DEBUG, "program_splice_flag = %d\n", ctx->program_splice_flag);
+ av_log(ctx, AV_LOG_DEBUG, "duration_flag = %d\n", ctx->duration_flag);
+ av_log(ctx, AV_LOG_DEBUG, "splice_immediate_flag = %d\n", ctx->splice_immediate_flag);
+
+ if (ctx->program_splice_flag && !ctx->splice_immediate_flag) {
+ ret = parse_splice_time(ctx, buf, &iface->pts);
+ buf += ret;
+ }
+ if ( ctx->program_splice_flag == 0) {
+ int comp_cnt = *buf++;
+ int i;
+ av_log(ctx, AV_LOG_DEBUG, "component_count = %d\n", comp_cnt);
+ for ( i = 0; i < comp_cnt; i++) {
+ ctx->component_tag = *buf++;
+ av_log(ctx, AV_LOG_DEBUG, "component_tag = %d\n", ctx->component_tag);
+ if (ctx->splice_immediate_flag) {
+ ret = parse_splice_time(ctx, buf, &iface->pts);
+ buf += ret;
+ }
+ }
+ }
+ if ( ctx->duration_flag ) {
+ init_get_bits(&gb, buf, 40);
+ ctx->auto_return = get_bits(&gb, 1);
+ av_log(ctx, AV_LOG_DEBUG, "autoreturn = %d\n", ctx->auto_return);
+ skip_bits(&gb, 6);
+ ctx->duration = get_bits64(&gb,33) + ctx->pts_adjustment;
+ av_log(ctx, AV_LOG_DEBUG, "duration = %lld\n", ctx->duration/90000);
+ buf += 5;
+ }
+ ctx->u_program_id = AV_RB16(buf);
+ av_log(ctx, AV_LOG_DEBUG, "u_program_id = %hd\n", ctx->u_program_id);
+ buf += 2;
+ ctx->avail_num = *buf++;
+ av_log(ctx, AV_LOG_DEBUG, "avail_num = %hhd\n", ctx->avail_num);
+ ctx->avail_expect = *buf++;
+ av_log(ctx, AV_LOG_DEBUG, "avail_expect = %hhd\n", ctx->avail_expect);
+
+ return buf - sbuf;
+}
+static int parse_time_signal_cmd(struct scte_35_ctx *ctx, const uint8_t *buf)
+{
+ const uint8_t *sbuf = buf;
+ av_log(ctx, AV_LOG_DEBUG, "Time Signal cmd\n");
+ return buf - sbuf;
+}
+static int parse_bandwidth_reservation_cmd(struct scte_35_ctx *ctx, const uint8_t *buf)
+{
+ const uint8_t *sbuf = buf;
+ av_log(ctx, AV_LOG_DEBUG, "Band Width reservation cmd\n");
+ return buf - sbuf;
+}
+
+static int decode(AVCodecContext *avctx, AVData *output,
+ const AVPacket *avpkt)
+{
+ struct scte_35_ctx *ctx = avctx->priv_data;
+ const uint8_t *buf = avpkt->data;
+ int len = avpkt->size;
+ int section_length;
+ int cmd_length;
+ uint8_t cmd_type;
+ int16_t tier;
+ GetBitContext gb;
+ int ret;
+
+ if (!buf)
+ return 0;
+
+ /* check table id */
+ if (*buf != 0xfc)
+ av_log(ctx, AV_LOG_ERROR, "Invalid SCTE packet\n");
+
+ init_get_bits(&gb, buf + 1, 104);
+
+ /* section_syntax_indicator should be 0 */
+ ret = get_bits(&gb,1);
+ if (ret)
+ av_log(ctx, AV_LOG_WARNING, "Section indicator should be 0, since MPEG short sections are to be used.\n");
+
+ /* private indicator */
+ ret = get_bits(&gb,1);
+ if (ret)
+ av_log(ctx, AV_LOG_WARNING, "corrupt packet\n");
+
+ skip_bits(&gb,2);
+
+ /* section length may be there */
+ section_length = get_bits(&gb,12);
+ if( section_length > 4093)
+ if(ret) {
+ av_log(ctx, AV_LOG_ERROR, "Invalid length of section\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ /* protocol version */
+ skip_bits(&gb,8);
+
+ ret = get_bits(&gb,1);
+ if(ret) {
+ av_log(ctx, AV_LOG_ERROR, "Encrytion not yet supported\n");
+ return AVERROR_PATCHWELCOME;
+ }
+ /* encryption algo */
+ skip_bits(&gb,6);
+
+ ctx->pts_adjustment = get_bits64(&gb, 33);
+
+ /* cw_index: used in encryption */
+ skip_bits(&gb,8);
+
+
+ /* tier */
+ tier = get_bits(&gb,12);
+ if( (tier & 0xfff) == 0xfff)
+ tier = -1;
+
+ cmd_length = get_bits(&gb,12);
+ if((cmd_length & 0xfff) == 0xfff )
+ cmd_length = -1;
+
+ cmd_type = get_bits(&gb,8);
+ switch(cmd_type) {
+ case SCTE_CMD_NULL:
+ av_log(ctx, AV_LOG_DEBUG, "NULL packet\n");
+ break;
+ case SCTE_CMD_SCHEDULE:
+ ret = parse_schedule_cmd(ctx, buf + 14);
+ break;
+ case SCTE_CMD_INSERT:
+ ret = parse_insert_cmd(ctx, buf + 14, output);
+ break;
+ case SCTE_CMD_SIGNAL:
+ ret = parse_time_signal_cmd(ctx, buf + 14);
+ break;
+ case SCTE_CMD_BANDWIDTH_RESERVATION:
+ ret = parse_bandwidth_reservation_cmd(ctx, buf + 14);
+ break;
+ default:
+ break;
+ /* reserved yet */
+ }
+ if(ret < 0)
+ goto fail;
+ buf += ret;
+
+fail:
+ return ret;
+}
+static const AVOption options[] = {
+ {NULL}
+};
+static const AVClass scte_35_dec_class = {
+ .class_name = "SCTE 35 Decoder",
+ .item_name = av_default_item_name,
+ .option = options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+
+AVCodec ff_scte_35_decoder = {
+ .name = "scte_35",
+ .long_name = NULL_IF_CONFIG_SMALL("SCTE 35"),
+ .type = AVMEDIA_TYPE_DATA,
+ .id = AV_CODEC_ID_SCTE_35,
+ .priv_data_size = sizeof(struct scte_35_ctx),
+ .init = init_decoder,
+ .close = close_decoder,
+ .decode_data = decode,
+ .priv_class = &scte_35_dec_class,
+};
diff --git a/libavcodec/scte_35.h b/libavcodec/scte_35.h
new file mode 100644
index 0000000..63bbac5
--- /dev/null
+++ b/libavcodec/scte_35.h
@@ -0,0 +1,31 @@
+/*
+ * SCTE 35 decoder
+ * Copyright (c) 2014 Anshul Maheshwaari
+ *
+ * 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 SCTE_35_H
+#define SCTE_35_H
+struct scte_35_interface {
+ int32_t event_id;
+ uint64_t pts;
+ int64_t duration;
+ /* flag */
+ int inout;
+ int cancel;
+};
+#endif
diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index b6ae1c0..7fae75d 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -183,12 +183,12 @@ static av_cold void avcodec_init(void)
int av_codec_is_encoder(const AVCodec *codec)
{
- return codec && (codec->encode_sub || codec->encode2);
+ return codec && (codec->encode_sub || codec->encode2 || codec->encode_data);
}
int av_codec_is_decoder(const AVCodec *codec)
{
- return codec && codec->decode;
+ return codec && ( codec->decode || codec->decode_data);
}
av_cold void avcodec_register(AVCodec *codec)
@@ -2158,7 +2158,14 @@ int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
avctx->frame_number++;
return ret;
}
-
+int avcodec_encode_data(AVCodecContext *avctx, const AVData *input, AVData *output,
+ enum AVCodecID in_codec_id)
+{
+ int ret;
+ ret = avctx->codec->encode_data(avctx, input, output, in_codec_id);
+ avctx->frame_number++;
+ return ret;
+}
/**
* Attempt to guess proper monotonic timestamps for decoded video frames
* which might have incorrect times. Input timestamps may wrap around, in
@@ -2609,6 +2616,26 @@ fail:
return ret;
}
+int attribute_align_arg avcodec_decode_data(AVCodecContext *avctx,
+ AVData *output,
+ const AVPacket *avpkt)
+{
+ AVCodecInternal *avci = avctx->internal;
+ int ret = 0;
+
+ if (!avctx->codec)
+ return AVERROR(EINVAL);
+ if (avctx->codec->type != AVMEDIA_TYPE_DATA) {
+ av_log(avctx, AV_LOG_ERROR, "Invalid media type for data\n");
+ return AVERROR(EINVAL);
+ }
+
+ ret = avctx->codec->decode_data(avctx, output, avpkt);
+
+ return ret;
+
+
+}
#define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
static int recode_subtitle(AVCodecContext *avctx,
AVPacket *outpkt, const AVPacket *inpkt)
diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index f21a1d6..1665aa0 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -1352,6 +1352,12 @@ typedef struct AVFormatContext {
enum AVCodecID subtitle_codec_id;
/**
+ * Forced Data codec_id.
+ * Demuxing: Set by user.
+ */
+ enum AVCodecID data_codec_id;
+
+ /**
* Maximum amount of memory in bytes to use for the index of each stream.
* If the index exceeds this size, entries will be discarded as
* needed to maintain a smaller size. This can lead to slower or less
@@ -1689,6 +1695,14 @@ typedef struct AVFormatContext {
AVCodec *subtitle_codec;
/**
+ * Forced data codec.
+ * This allows forcing a specific decoder, even when there are multiple with
+ * the same codec_id.
+ * Demuxing: Set by user via av_format_set_data_codec (NO direct access).
+ */
+ AVCodec *data_codec;
+
+ /**
* Number of bytes to be written as padding in a metadata header.
* Demuxing: Unused.
* Muxing: Set by user via av_format_set_metadata_header_padding.
@@ -1748,6 +1762,8 @@ AVCodec * av_format_get_audio_codec(const AVFormatContext *s);
void av_format_set_audio_codec(AVFormatContext *s, AVCodec *c);
AVCodec * av_format_get_subtitle_codec(const AVFormatContext *s);
void av_format_set_subtitle_codec(AVFormatContext *s, AVCodec *c);
+AVCodec * av_format_get_data_codec(const AVFormatContext *s);
+void av_format_set_data_codec(AVFormatContext *s, AVCodec *c);
int av_format_get_metadata_header_padding(const AVFormatContext *s);
void av_format_set_metadata_header_padding(AVFormatContext *s, int c);
void * av_format_get_opaque(const AVFormatContext *s);
diff --git a/libavformat/mpegts.c b/libavformat/mpegts.c
index c01f954..41c6f9b 100644
--- a/libavformat/mpegts.c
+++ b/libavformat/mpegts.c
@@ -57,6 +57,7 @@ enum MpegTSFilterType {
MPEGTS_PES,
MPEGTS_SECTION,
MPEGTS_PCR,
+ MPEGTS_DATA,
};
typedef struct MpegTSFilter MpegTSFilter;
@@ -488,6 +489,11 @@ static MpegTSFilter *mpegts_open_pcr_filter(MpegTSContext *ts, unsigned int pid)
return mpegts_open_filter(ts, pid, MPEGTS_PCR);
}
+static MpegTSFilter *mpegts_open_data_filter(MpegTSContext *ts, unsigned int pid)
+{
+ return mpegts_open_filter(ts, pid, MPEGTS_DATA);
+}
+
static void mpegts_close_filter(MpegTSContext *ts, MpegTSFilter *filter)
{
int pid;
@@ -666,6 +672,7 @@ static const StreamType ISO_types[] = {
{ 0x1b, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_H264 },
{ 0x24, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_HEVC },
{ 0x42, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_CAVS },
+ { 0x86, AVMEDIA_TYPE_DATA, AV_CODEC_ID_SCTE_35 },
{ 0xd1, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_DIRAC },
{ 0xea, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_VC1 },
{ 0 },
@@ -813,7 +820,12 @@ static void reset_pes_packet_state(PESContext *pes)
pes->flags = 0;
av_buffer_unref(&pes->buffer);
}
-
+static void new_data_packet(const uint8_t *buffer, int len, AVPacket *pkt)
+{
+ av_init_packet(pkt);
+ pkt->data = buffer;
+ pkt->size = len;
+}
static void new_pes_packet(PESContext *pes, AVPacket *pkt)
{
av_init_packet(pkt);
@@ -1871,7 +1883,20 @@ static void pmt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len
pes->st->id = pes->pid;
}
st = pes->st;
- } else if (stream_type != 0x13) {
+ } else if (stream_type == 0x86 ) {
+ int idx = ff_find_stream_index(ts->stream, pid);
+ if (idx >= 0) {
+ st = ts->stream->streams[idx];
+ } else {
+ st = avformat_new_stream(ts->stream, NULL);
+ if (!st)
+ goto out;
+ st->id = pid;
+ st->codec->codec_type = AVMEDIA_TYPE_DATA;
+ mpegts_find_stream_type(st, stream_type, ISO_types);
+ mpegts_open_data_filter(ts, pid);
+ }
+ }else if (stream_type != 0x13 ) {
if (ts->pids[pid])
mpegts_close_filter(ts, ts->pids[pid]); // wrongly added sdt filter probably
pes = add_pes_stream(ts, pid, pcr_pid);
@@ -2202,14 +2227,17 @@ static int handle_packet(MpegTSContext *ts, const uint8_t *packet)
}
}
- } else {
+ } else if (tss->type == MPEGTS_DATA) {
+ /* may be pointer field is 0 and to be ignored*/
+ p++;
+ new_data_packet(p,p_end - p, ts->pkt);
+ ts->stop_parse = 1;
+ } else if (tss->type == MPEGTS_PES) {
int ret;
// Note: The position here points actually behind the current packet.
- if (tss->type == MPEGTS_PES) {
- if ((ret = tss->u.pes_filter.pes_cb(tss, p, p_end - p, is_start,
+ if ((ret = tss->u.pes_filter.pes_cb(tss, p, p_end - p, is_start,
pos - ts->raw_packet_size)) < 0)
- return ret;
- }
+ return ret;
}
return 0;
@@ -2595,6 +2623,8 @@ static int mpegts_read_packet(AVFormatContext *s, AVPacket *pkt)
ret = 0;
break;
}
+ } else if (ts->pids[i] && ts->pids[i]->type == MPEGTS_DATA) {
+ ret = 0;
}
}
diff --git a/libavformat/utils.c b/libavformat/utils.c
index 61421c0..621f64a 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -106,6 +106,7 @@ MAKE_ACCESSORS(AVStream, stream, AVRational, r_frame_rate)
MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, video_codec)
MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, audio_codec)
MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, subtitle_codec)
+MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, data_codec)
MAKE_ACCESSORS(AVFormatContext, format, int, metadata_header_padding)
MAKE_ACCESSORS(AVFormatContext, format, void *, opaque)
MAKE_ACCESSORS(AVFormatContext, format, av_format_control_message, control_message_cb)
@@ -2490,7 +2491,7 @@ static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
file_size = FFMAX(0, file_size);
}
- if ((!strcmp(ic->iformat->name, "mpeg") ||
+ if (0 && (!strcmp(ic->iformat->name, "mpeg") ||
!strcmp(ic->iformat->name, "mpegts")) &&
file_size && ic->pb->seekable) {
/* get accurate estimate from the PTSes */
diff --git a/libavutil/avstring.c b/libavutil/avstring.c
index 25c65b4..508ae03 100644
--- a/libavutil/avstring.c
+++ b/libavutil/avstring.c
@@ -143,7 +143,31 @@ char *av_d2str(double d)
snprintf(str, 16, "%f", d);
return str;
}
-
+char *av_int2str(int i)
+{
+ char *str = av_malloc(16);
+ if (str)
+ snprintf(str, 16, "%d", i);
+ return str;
+}
+char *av_uint2str(unsigned int i)
+{
+ char *str = av_malloc(16);
+ if (str)
+ snprintf(str, 16, "%u", i);
+ return str;
+}
+/**
+ * 0xff ff ff ff ff ff ff ff = 18446744073709551615
+ * therefor taking 20 digit
+ */
+char *av_uint64_t2str(uint64_t val)
+{
+ char *str = av_malloc(20);
+ if (str)
+ snprintf(str, 20, "%llu", val);
+ return str;
+}
#define WHITESPACES " \n\t"
char *av_get_token(const char **buf, const char *term)
diff --git a/libavutil/avstring.h b/libavutil/avstring.h
index ea7d1dc..8e7ba25 100644
--- a/libavutil/avstring.h
+++ b/libavutil/avstring.h
@@ -161,6 +161,21 @@ char *av_asprintf(const char *fmt, ...) av_printf_format(1, 2);
char *av_d2str(double d);
/**
+ * Convert a int to a av_malloced string.
+ */
+char *av_int2str(int i);
+
+/**
+ * Convert a unsigned int to a av_malloced string.
+ */
+char *av_uint2str(unsigned int ui);
+
+/**
+ * Convert a 64 bit decimal to a av_malloced string.
+ */
+char *av_uint64_t2str(uint64_t val);
+
+/**
* Unescape the given string until a non escaped terminating char,
* and return the token corresponding to the unescaped string.
*
--
1.8.1.4
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