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Diffstat (limited to 'libavformat/nutenc.c')
-rw-r--r--libavformat/nutenc.c280
1 files changed, 172 insertions, 108 deletions
diff --git a/libavformat/nutenc.c b/libavformat/nutenc.c
index df70f94122..46711528a0 100644
--- a/libavformat/nutenc.c
+++ b/libavformat/nutenc.c
@@ -2,20 +2,20 @@
* nut muxer
* Copyright (c) 2004-2007 Michael Niedermayer
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * 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.
*
- * Libav is distributed in the hope that it will be useful,
+ * 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 Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
@@ -23,6 +23,7 @@
#include "libavutil/mathematics.h"
#include "libavutil/tree.h"
#include "libavutil/dict.h"
+#include "libavutil/avassert.h"
#include "libavcodec/mpegaudiodata.h"
#include "nut.h"
#include "internal.h"
@@ -60,12 +61,9 @@ static int find_expected_header(AVCodecContext *c, int size, int key_frame,
lsf = sample_rate < (24000 + 32000) / 2;
mpeg25 = sample_rate < (12000 + 16000) / 2;
sample_rate <<= lsf + mpeg25;
- if (sample_rate < (32000 + 44100) / 2)
- sample_rate_index = 2;
- else if (sample_rate < (44100 + 48000) / 2)
- sample_rate_index = 0;
- else
- sample_rate_index = 1;
+ if (sample_rate < (32000 + 44100) / 2) sample_rate_index = 2;
+ else if (sample_rate < (44100 + 48000) / 2) sample_rate_index = 0;
+ else sample_rate_index = 1;
sample_rate = avpriv_mpa_freq_tab[sample_rate_index] >> (lsf + mpeg25);
@@ -99,8 +97,7 @@ static int find_expected_header(AVCodecContext *c, int size, int key_frame,
return 0;
}
-static int find_header_idx(AVFormatContext *s, AVCodecContext *c, int size,
- int frame_type)
+static int find_header_idx(AVFormatContext *s, AVCodecContext *c, int size, int frame_type)
{
NUTContext *nut = s->priv_data;
uint8_t out[64];
@@ -169,6 +166,19 @@ static void build_frame_code(AVFormatContext *s)
int is_audio = codec->codec_type == AVMEDIA_TYPE_AUDIO;
int intra_only = /*codec->intra_only || */ is_audio;
int pred_count;
+ int frame_size = 0;
+
+ if (codec->codec_type == AVMEDIA_TYPE_AUDIO) {
+ frame_size = av_get_audio_frame_duration(codec, 0);
+ if (codec->codec_id == AV_CODEC_ID_VORBIS && !frame_size)
+ frame_size = 64;
+ } else {
+ AVRational f = av_div_q(codec->time_base, *nut->stream[stream_id].time_base);
+ if (f.den == 1 && f.num>0)
+ frame_size = f.num;
+ }
+ if (!frame_size)
+ frame_size = 1;
for (key_frame = 0; key_frame < 2; key_frame++) {
if (!intra_only || !keyframe_0_esc || key_frame != 0) {
@@ -184,29 +194,32 @@ static void build_frame_code(AVFormatContext *s)
}
key_frame = intra_only;
+#if 1
if (is_audio) {
int frame_bytes = codec->frame_size * (int64_t)codec->bit_rate /
(8 * codec->sample_rate);
int pts;
- for (pts = 0; pts < 2; pts++)
+ for (pts = 0; pts < 2; pts++) {
for (pred = 0; pred < 2; pred++) {
- FrameCode *ft = &nut->frame_code[start2];
+ FrameCode *ft = &nut->frame_code[start2];
ft->flags = FLAG_KEY * key_frame;
ft->stream_id = stream_id;
ft->size_mul = frame_bytes + 2;
ft->size_lsb = frame_bytes + pred;
- ft->pts_delta = pts;
+ ft->pts_delta = pts * frame_size;
ft->header_idx = find_header_idx(s, codec, frame_bytes + pred, key_frame);
start2++;
}
+ }
} else {
FrameCode *ft = &nut->frame_code[start2];
ft->flags = FLAG_KEY | FLAG_SIZE_MSB;
ft->stream_id = stream_id;
ft->size_mul = 1;
- ft->pts_delta = 1;
+ ft->pts_delta = frame_size;
start2++;
}
+#endif
if (codec->has_b_frames) {
pred_count = 5;
@@ -229,6 +242,8 @@ static void build_frame_code(AVFormatContext *s)
int start3 = start2 + (end2 - start2) * pred / pred_count;
int end3 = start2 + (end2 - start2) * (pred + 1) / pred_count;
+ pred_table[pred] *= frame_size;
+
for (index = start3; index < end3; index++) {
FrameCode *ft = &nut->frame_code[index];
ft->flags = FLAG_KEY * key_frame;
@@ -243,15 +258,13 @@ static void build_frame_code(AVFormatContext *s)
}
}
}
- memmove(&nut->frame_code['N' + 1], &nut->frame_code['N'],
- sizeof(FrameCode) * (255 - 'N'));
+ memmove(&nut->frame_code['N' + 1], &nut->frame_code['N'], sizeof(FrameCode) * (255 - 'N'));
nut->frame_code[0].flags =
nut->frame_code[255].flags =
nut->frame_code['N'].flags = FLAG_INVALID;
}
-static void put_tt(NUTContext *nut, AVRational *time_base, AVIOContext *bc,
- uint64_t val)
+static void put_tt(NUTContext *nut, AVRational *time_base, AVIOContext *bc, uint64_t val)
{
val *= nut->time_base_count;
val += time_base - nut->time_base;
@@ -282,8 +295,7 @@ static inline void ff_put_v_trace(AVIOContext *bc, uint64_t v, const char *file,
ff_put_v(bc, v);
}
-static inline void put_s_trace(AVIOContext *bc, int64_t v, const char *file,
- const char *func, int line)
+static inline void put_s_trace(AVIOContext *bc, int64_t v, const char *file, const char *func, int line)
{
av_log(NULL, AV_LOG_DEBUG, "put_s %5"PRId64" / %"PRIX64" in %s %s:%d\n", v, v, file, func, line);
@@ -342,17 +354,12 @@ static void write_mainheader(NUTContext *nut, AVIOContext *bc)
tmp_fields = 0;
tmp_size = 0;
// tmp_res=0;
- if (tmp_pts != nut->frame_code[i].pts_delta)
- tmp_fields = 1;
- if (tmp_mul != nut->frame_code[i].size_mul)
- tmp_fields = 2;
- if (tmp_stream != nut->frame_code[i].stream_id)
- tmp_fields = 3;
- if (tmp_size != nut->frame_code[i].size_lsb)
- tmp_fields = 4;
-// if(tmp_res != nut->frame_code[i].res ) tmp_fields=5;
- if (tmp_head_idx != nut->frame_code[i].header_idx)
- tmp_fields = 8;
+ if (tmp_pts != nut->frame_code[i].pts_delta ) tmp_fields = 1;
+ if (tmp_mul != nut->frame_code[i].size_mul ) tmp_fields = 2;
+ if (tmp_stream != nut->frame_code[i].stream_id ) tmp_fields = 3;
+ if (tmp_size != nut->frame_code[i].size_lsb ) tmp_fields = 4;
+// if (tmp_res != nut->frame_code[i].res ) tmp_fields=5;
+ if (tmp_head_idx != nut->frame_code[i].header_idx) tmp_fields = 8;
tmp_pts = nut->frame_code[i].pts_delta;
tmp_flags = nut->frame_code[i].flags;
@@ -381,22 +388,14 @@ static void write_mainheader(NUTContext *nut, AVIOContext *bc)
ff_put_v(bc, tmp_flags);
ff_put_v(bc, tmp_fields);
- if (tmp_fields > 0)
- put_s(bc, tmp_pts);
- if (tmp_fields > 1)
- ff_put_v(bc, tmp_mul);
- if (tmp_fields > 2)
- ff_put_v(bc, tmp_stream);
- if (tmp_fields > 3)
- ff_put_v(bc, tmp_size);
- if (tmp_fields > 4)
- ff_put_v(bc, 0 /*tmp_res*/);
- if (tmp_fields > 5)
- ff_put_v(bc, j);
- if (tmp_fields > 6)
- ff_put_v(bc, tmp_match);
- if (tmp_fields > 7)
- ff_put_v(bc, tmp_head_idx);
+ if (tmp_fields > 0) put_s(bc, tmp_pts);
+ if (tmp_fields > 1) ff_put_v(bc, tmp_mul);
+ if (tmp_fields > 2) ff_put_v(bc, tmp_stream);
+ if (tmp_fields > 3) ff_put_v(bc, tmp_size);
+ if (tmp_fields > 4) ff_put_v(bc, 0 /*tmp_res*/);
+ if (tmp_fields > 5) ff_put_v(bc, j);
+ if (tmp_fields > 6) ff_put_v(bc, tmp_match);
+ if (tmp_fields > 7) ff_put_v(bc, tmp_head_idx);
}
ff_put_v(bc, nut->header_count - 1);
for (i = 1; i < nut->header_count; i++) {
@@ -410,30 +409,17 @@ static int write_streamheader(AVFormatContext *avctx, AVIOContext *bc,
{
NUTContext *nut = avctx->priv_data;
AVCodecContext *codec = st->codec;
- unsigned codec_tag = av_codec_get_tag(ff_nut_codec_tags, codec->codec_id);
ff_put_v(bc, i);
switch (codec->codec_type) {
- case AVMEDIA_TYPE_VIDEO:
- ff_put_v(bc, 0);
- break;
- case AVMEDIA_TYPE_AUDIO:
- ff_put_v(bc, 1);
- break;
- case AVMEDIA_TYPE_SUBTITLE:
- ff_put_v(bc, 2);
- break;
- default:
- ff_put_v(bc, 3);
- break;
+ case AVMEDIA_TYPE_VIDEO: ff_put_v(bc, 0); break;
+ case AVMEDIA_TYPE_AUDIO: ff_put_v(bc, 1); break;
+ case AVMEDIA_TYPE_SUBTITLE: ff_put_v(bc, 2); break;
+ default: ff_put_v(bc, 3); break;
}
ff_put_v(bc, 4);
-
- if (!codec_tag || codec->codec_id == AV_CODEC_ID_RAWVIDEO)
- codec_tag = codec->codec_tag;
-
- if (codec_tag) {
- avio_wl32(bc, codec_tag);
+ if (codec->codec_tag) {
+ avio_wl32(bc, codec->codec_tag);
} else {
av_log(avctx, AV_LOG_ERROR, "No codec tag defined for stream %d\n", i);
return AVERROR(EINVAL);
@@ -509,20 +495,28 @@ static int write_globalinfo(NUTContext *nut, AVIOContext *bc)
return 0;
}
-static int write_streaminfo(NUTContext *nut, AVIOContext *bc, int stream_id){
+static int write_streaminfo(NUTContext *nut, AVIOContext *bc, int stream_id) {
AVFormatContext *s= nut->avf;
AVStream* st = s->streams[stream_id];
+ AVDictionaryEntry *t = NULL;
AVIOContext *dyn_bc;
uint8_t *dyn_buf=NULL;
int count=0, dyn_size, i;
int ret = avio_open_dyn_buf(&dyn_bc);
- if(ret < 0)
+ if (ret < 0)
return ret;
+ while ((t = av_dict_get(st->metadata, "", t, AV_DICT_IGNORE_SUFFIX)))
+ count += add_info(dyn_bc, t->key, t->value);
for (i=0; ff_nut_dispositions[i].flag; ++i) {
if (st->disposition & ff_nut_dispositions[i].flag)
count += add_info(dyn_bc, "Disposition", ff_nut_dispositions[i].str);
}
+ if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
+ uint8_t buf[256];
+ snprintf(buf, sizeof(buf), "%d/%d", st->codec->time_base.den, st->codec->time_base.num);
+ count += add_info(dyn_bc, "r_frame_rate", buf);
+ }
dyn_size = avio_close_dyn_buf(dyn_bc, &dyn_buf);
if (count) {
@@ -568,6 +562,51 @@ static int write_chapter(NUTContext *nut, AVIOContext *bc, int id)
return 0;
}
+static int write_index(NUTContext *nut, AVIOContext *bc) {
+ int i;
+ Syncpoint dummy= { .pos= 0 };
+ Syncpoint *next_node[2] = { NULL };
+ int64_t startpos = avio_tell(bc);
+ int64_t payload_size;
+
+ put_tt(nut, nut->max_pts_tb, bc, nut->max_pts);
+
+ ff_put_v(bc, nut->sp_count);
+
+ for (i=0; i<nut->sp_count; i++) {
+ av_tree_find(nut->syncpoints, &dummy, (void *) ff_nut_sp_pos_cmp, (void**)next_node);
+ ff_put_v(bc, (next_node[1]->pos >> 4) - (dummy.pos>>4));
+ dummy.pos = next_node[1]->pos;
+ }
+
+ for (i=0; i<nut->avf->nb_streams; i++) {
+ StreamContext *nus= &nut->stream[i];
+ int64_t last_pts= -1;
+ int j, k;
+ for (j=0; j<nut->sp_count; j++) {
+ int flag = (nus->keyframe_pts[j] != AV_NOPTS_VALUE) ^ (j+1 == nut->sp_count);
+ int n = 0;
+ for (; j<nut->sp_count && (nus->keyframe_pts[j] != AV_NOPTS_VALUE) == flag; j++)
+ n++;
+
+ ff_put_v(bc, 1 + 2*flag + 4*n);
+ for (k= j - n; k<=j && k<nut->sp_count; k++) {
+ if (nus->keyframe_pts[k] == AV_NOPTS_VALUE)
+ continue;
+ av_assert0(nus->keyframe_pts[k] > last_pts);
+ ff_put_v(bc, nus->keyframe_pts[k] - last_pts);
+ last_pts = nus->keyframe_pts[k];
+ }
+ }
+ }
+
+ payload_size = avio_tell(bc) - startpos + 8 + 4;
+
+ avio_wb64(bc, 8 + payload_size + av_log2(payload_size) / 7 + 1 + 4*(payload_size > 4096));
+
+ return 0;
+}
+
static int write_headers(AVFormatContext *avctx, AVIOContext *bc)
{
NUTContext *nut = avctx->priv_data;
@@ -641,12 +680,11 @@ static int nut_write_header(AVFormatContext *s)
nut->avf = s;
- nut->stream = av_mallocz(sizeof(StreamContext) * s->nb_streams);
- if (s->nb_chapters)
- nut->chapter = av_mallocz(sizeof(ChapterContext) * s->nb_chapters);
- nut->time_base = av_mallocz(sizeof(AVRational) * (s->nb_streams +
- s->nb_chapters));
- if (!nut->stream || (s->nb_chapters && !nut->chapter) || !nut->time_base) {
+ nut->stream = av_mallocz(sizeof(StreamContext ) * s->nb_streams);
+ nut->chapter = av_mallocz(sizeof(ChapterContext) * s->nb_chapters);
+ nut->time_base= av_mallocz(sizeof(AVRational ) *(s->nb_streams +
+ s->nb_chapters));
+ if (!nut->stream || !nut->chapter || !nut->time_base) {
av_freep(&nut->stream);
av_freep(&nut->chapter);
av_freep(&nut->time_base);
@@ -657,8 +695,13 @@ static int nut_write_header(AVFormatContext *s)
AVStream *st = s->streams[i];
int ssize;
AVRational time_base;
- ff_parse_specific_params(st->codec, &time_base.den, &ssize,
- &time_base.num);
+ ff_parse_specific_params(st->codec, &time_base.den, &ssize, &time_base.num);
+
+ if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && st->codec->sample_rate) {
+ time_base = (AVRational) {1, st->codec->sample_rate};
+ } else {
+ time_base = ff_choose_timebase(s, st, 48000);
+ }
avpriv_set_pts_info(st, 64, time_base.num, time_base.den);
@@ -695,7 +738,7 @@ static int nut_write_header(AVFormatContext *s)
nut->max_distance = MAX_DISTANCE;
build_elision_headers(s);
build_frame_code(s);
- assert(nut->frame_code['N'].flags == FLAG_INVALID);
+ av_assert0(nut->frame_code['N'].flags == FLAG_INVALID);
avio_write(bc, ID_STRING, strlen(ID_STRING));
avio_w8(bc, 0);
@@ -703,9 +746,10 @@ static int nut_write_header(AVFormatContext *s)
if ((ret = write_headers(s, bc)) < 0)
return ret;
- avio_flush(bc);
+ if (s->avoid_negative_ts < 0)
+ s->avoid_negative_ts = 1;
- //FIXME index
+ avio_flush(bc);
return 0;
}
@@ -762,8 +806,8 @@ static int nut_write_packet(AVFormatContext *s, AVPacket *pkt)
AVIOContext *bc = s->pb, *dyn_bc;
FrameCode *fc;
int64_t coded_pts;
- int best_length, frame_code, flags, needed_flags, i, header_idx,
- best_header_idx;
+ int best_length, frame_code, flags, needed_flags, i, header_idx;
+ int best_header_idx;
int key_frame = !!(pkt->flags & AV_PKT_FLAG_KEY);
int store_sp = 0;
int ret;
@@ -772,7 +816,7 @@ static int nut_write_packet(AVFormatContext *s, AVPacket *pkt)
av_log(s, AV_LOG_ERROR,
"Negative pts not supported stream %d, pts %"PRId64"\n",
pkt->stream_index, pkt->pts);
- return AVERROR_INVALIDDATA;
+ return AVERROR(EINVAL);
}
if (1LL << (20 + 3 * nut->header_count) <= avio_tell(bc))
@@ -781,8 +825,7 @@ static int nut_write_packet(AVFormatContext *s, AVPacket *pkt)
if (key_frame && !(nus->last_flags & FLAG_KEY))
store_sp = 1;
- if (pkt->size + 30 /*FIXME check*/ + avio_tell(bc) >=
- nut->last_syncpoint_pos + nut->max_distance)
+ if (pkt->size + 30 /*FIXME check*/ + avio_tell(bc) >= nut->last_syncpoint_pos + nut->max_distance)
store_sp = 1;
//FIXME: Ensure store_sp is 1 in the first place.
@@ -816,8 +859,19 @@ static int nut_write_packet(AVFormatContext *s, AVPacket *pkt)
put_packet(nut, bc, dyn_bc, 1, SYNCPOINT_STARTCODE);
ff_nut_add_sp(nut, nut->last_syncpoint_pos, 0 /*unused*/, pkt->dts);
+
+ if ((1ll<<60) % nut->sp_count == 0)
+ for (i=0; i<s->nb_streams; i++) {
+ int j;
+ StreamContext *nus = &nut->stream[i];
+ nus->keyframe_pts = av_realloc(nus->keyframe_pts, 2*nut->sp_count*sizeof(*nus->keyframe_pts));
+ if (!nus->keyframe_pts)
+ return AVERROR(ENOMEM);
+ for (j=nut->sp_count == 1 ? 0 : nut->sp_count; j<2*nut->sp_count; j++)
+ nus->keyframe_pts[j] = AV_NOPTS_VALUE;
+ }
}
- assert(nus->last_pts != AV_NOPTS_VALUE);
+ av_assert0(nus->last_pts != AV_NOPTS_VALUE);
coded_pts = pkt->pts & ((1 << nus->msb_pts_shift) - 1);
if (ff_lsb2full(nus, coded_pts) != pkt->pts)
@@ -861,9 +915,8 @@ static int nut_write_packet(AVFormatContext *s, AVPacket *pkt)
if (flags & FLAG_CODED_PTS)
length += ff_get_v_length(coded_pts);
- if ((flags & FLAG_CODED)
- && nut->header_len[best_header_idx] >
- nut->header_len[fc->header_idx] + 1) {
+ if ( (flags & FLAG_CODED)
+ && nut->header_len[best_header_idx] > nut->header_len[fc->header_idx] + 1) {
flags |= FLAG_HEADER_IDX;
}
@@ -882,7 +935,7 @@ static int nut_write_packet(AVFormatContext *s, AVPacket *pkt)
frame_code = i;
}
}
- assert(frame_code != -1);
+ av_assert0(frame_code != -1);
fc = &nut->frame_code[frame_code];
flags = fc->flags;
needed_flags = get_needed_flags(nut, nus, fc, pkt);
@@ -894,27 +947,20 @@ static int nut_write_packet(AVFormatContext *s, AVPacket *pkt)
ff_put_v(bc, (flags ^ needed_flags) & ~(FLAG_CODED));
flags = needed_flags;
}
- if (flags & FLAG_STREAM_ID)
- ff_put_v(bc, pkt->stream_index);
- if (flags & FLAG_CODED_PTS)
- ff_put_v(bc, coded_pts);
- if (flags & FLAG_SIZE_MSB)
- ff_put_v(bc, pkt->size / fc->size_mul);
- if (flags & FLAG_HEADER_IDX)
- ff_put_v(bc, header_idx = best_header_idx);
-
- if (flags & FLAG_CHECKSUM)
- avio_wl32(bc, ffio_get_checksum(bc));
- else
- ffio_get_checksum(bc);
+ if (flags & FLAG_STREAM_ID) ff_put_v(bc, pkt->stream_index);
+ if (flags & FLAG_CODED_PTS) ff_put_v(bc, coded_pts);
+ if (flags & FLAG_SIZE_MSB ) ff_put_v(bc, pkt->size / fc->size_mul);
+ if (flags & FLAG_HEADER_IDX) ff_put_v(bc, header_idx = best_header_idx);
+
+ if (flags & FLAG_CHECKSUM) avio_wl32(bc, ffio_get_checksum(bc));
+ else ffio_get_checksum(bc);
- avio_write(bc, pkt->data + nut->header_len[header_idx],
- pkt->size - nut->header_len[header_idx]);
+ avio_write(bc, pkt->data + nut->header_len[header_idx], pkt->size - nut->header_len[header_idx]);
nus->last_flags = flags;
nus->last_pts = pkt->pts;
//FIXME just store one per syncpoint
- if (flags & FLAG_KEY)
+ if (flags & FLAG_KEY) {
av_add_index_entry(
s->streams[pkt->stream_index],
nut->last_syncpoint_pos,
@@ -922,6 +968,14 @@ static int nut_write_packet(AVFormatContext *s, AVPacket *pkt)
0,
0,
AVINDEX_KEYFRAME);
+ if (nus->keyframe_pts && nus->keyframe_pts[nut->sp_count] == AV_NOPTS_VALUE)
+ nus->keyframe_pts[nut->sp_count] = pkt->pts;
+ }
+
+ if (!nut->max_pts_tb || av_compare_ts(nut->max_pts, *nut->max_pts_tb, pkt->pts, *nus->time_base) < 0) {
+ nut->max_pts = pkt->pts;
+ nut->max_pts_tb = nus->time_base;
+ }
return 0;
}
@@ -929,12 +983,22 @@ static int nut_write_packet(AVFormatContext *s, AVPacket *pkt)
static int nut_write_trailer(AVFormatContext *s)
{
NUTContext *nut = s->priv_data;
- AVIOContext *bc = s->pb;
+ AVIOContext *bc = s->pb, *dyn_bc;
+ int i, ret;
while (nut->header_count < 3)
write_headers(s, bc);
+ ret = avio_open_dyn_buf(&dyn_bc);
+ if (ret >= 0) {
+ write_index(nut, dyn_bc);
+ put_packet(nut, bc, dyn_bc, 1, INDEX_STARTCODE);
+ }
+
ff_nut_free_sp(nut);
+ for (i=0; i<s->nb_streams; i++)
+ av_freep(&nut->stream[i].keyframe_pts);
+
av_freep(&nut->stream);
av_freep(&nut->chapter);
av_freep(&nut->time_base);
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-05 16:11:22 +0300