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-rw-r--r--libavformat/tests/movenc.c672
1 files changed, 672 insertions, 0 deletions
diff --git a/libavformat/tests/movenc.c b/libavformat/tests/movenc.c
new file mode 100644
index 0000000000..711e1579b2
--- /dev/null
+++ b/libavformat/tests/movenc.c
@@ -0,0 +1,672 @@
+/*
+ * Copyright (c) 2015 Martin Storsjo
+ *
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "config.h"
+
+#include "libavutil/intreadwrite.h"
+#include "libavutil/mathematics.h"
+#include "libavutil/md5.h"
+
+#include "libavformat/avformat.h"
+
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#if !HAVE_GETOPT
+#include "compat/getopt.c"
+#endif
+
+#define HASH_SIZE 16
+
+static const uint8_t h264_extradata[] = {
+ 0x01, 0x4d, 0x40, 0x1e, 0xff, 0xe1, 0x00, 0x02, 0x67, 0x4d, 0x01, 0x00, 0x02, 0x68, 0xef
+};
+static const uint8_t aac_extradata[] = {
+ 0x12, 0x10
+};
+
+
+const char *format = "mp4";
+AVFormatContext *ctx;
+uint8_t iobuf[32768];
+AVDictionary *opts;
+
+int write_file;
+const char *cur_name;
+FILE* out;
+int out_size;
+struct AVMD5* md5;
+uint8_t hash[HASH_SIZE];
+
+AVStream *video_st, *audio_st;
+int64_t audio_dts, video_dts;
+
+int bframes;
+int64_t duration;
+int64_t audio_duration;
+int frames;
+int gop_size;
+int64_t next_p_pts;
+enum AVPictureType last_picture;
+int skip_write;
+int skip_write_audio;
+int clear_duration;
+
+int num_warnings;
+
+int check_faults;
+
+
+static void count_warnings(void *avcl, int level, const char *fmt, va_list vl)
+{
+ if (level == AV_LOG_WARNING)
+ num_warnings++;
+}
+
+static void init_count_warnings(void)
+{
+ av_log_set_callback(count_warnings);
+ num_warnings = 0;
+}
+
+static void reset_count_warnings(void)
+{
+ av_log_set_callback(av_log_default_callback);
+}
+
+static int io_write(void *opaque, uint8_t *buf, int size)
+{
+ out_size += size;
+ av_md5_update(md5, buf, size);
+ if (out)
+ fwrite(buf, 1, size, out);
+ return size;
+}
+
+static void init_out(const char *name)
+{
+ char buf[100];
+ cur_name = name;
+ snprintf(buf, sizeof(buf), "%s.%s", cur_name, format);
+
+ av_md5_init(md5);
+ if (write_file) {
+ out = fopen(buf, "wb");
+ if (!out)
+ perror(buf);
+ }
+ out_size = 0;
+}
+
+static void close_out(void)
+{
+ int i;
+ av_md5_final(md5, hash);
+ for (i = 0; i < HASH_SIZE; i++)
+ printf("%02x", hash[i]);
+ printf(" %d %s\n", out_size, cur_name);
+ if (out)
+ fclose(out);
+ out = NULL;
+}
+
+static void check_func(int value, int line, const char *msg, ...)
+{
+ if (!value) {
+ va_list ap;
+ va_start(ap, msg);
+ printf("%d: ", line);
+ vprintf(msg, ap);
+ printf("\n");
+ check_faults++;
+ va_end(ap);
+ }
+}
+#define check(value, ...) check_func(value, __LINE__, __VA_ARGS__)
+
+static void init_fps(int bf, int audio_preroll, int fps)
+{
+ AVStream *st;
+ ctx = avformat_alloc_context();
+ if (!ctx)
+ exit(1);
+ ctx->oformat = av_guess_format(format, NULL, NULL);
+ if (!ctx->oformat)
+ exit(1);
+ ctx->pb = avio_alloc_context(iobuf, sizeof(iobuf), AVIO_FLAG_WRITE, NULL, NULL, io_write, NULL);
+ if (!ctx->pb)
+ exit(1);
+ ctx->flags |= AVFMT_FLAG_BITEXACT;
+
+ st = avformat_new_stream(ctx, NULL);
+ if (!st)
+ exit(1);
+ st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
+ st->codecpar->codec_id = AV_CODEC_ID_H264;
+ st->codecpar->width = 640;
+ st->codecpar->height = 480;
+ st->time_base.num = 1;
+ st->time_base.den = 30;
+ st->codecpar->extradata_size = sizeof(h264_extradata);
+ st->codecpar->extradata = av_mallocz(st->codecpar->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
+ if (!st->codecpar->extradata)
+ exit(1);
+ memcpy(st->codecpar->extradata, h264_extradata, sizeof(h264_extradata));
+ video_st = st;
+
+ st = avformat_new_stream(ctx, NULL);
+ if (!st)
+ exit(1);
+ st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
+ st->codecpar->codec_id = AV_CODEC_ID_AAC;
+ st->codecpar->sample_rate = 44100;
+ st->codecpar->channels = 2;
+ st->time_base.num = 1;
+ st->time_base.den = 44100;
+ st->codecpar->extradata_size = sizeof(aac_extradata);
+ st->codecpar->extradata = av_mallocz(st->codecpar->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
+ if (!st->codecpar->extradata)
+ exit(1);
+ memcpy(st->codecpar->extradata, aac_extradata, sizeof(aac_extradata));
+ audio_st = st;
+
+ if (avformat_write_header(ctx, &opts) < 0)
+ exit(1);
+ av_dict_free(&opts);
+
+ frames = 0;
+ gop_size = 30;
+ duration = video_st->time_base.den / fps;
+ audio_duration = 1024LL * audio_st->time_base.den / audio_st->codecpar->sample_rate;
+ if (audio_preroll)
+ audio_preroll = 2048LL * audio_st->time_base.den / audio_st->codecpar->sample_rate;
+
+ bframes = bf;
+ video_dts = bframes ? -duration : 0;
+ audio_dts = -audio_preroll;
+}
+
+static void init(int bf, int audio_preroll)
+{
+ init_fps(bf, audio_preroll, 30);
+}
+
+static void mux_frames(int n)
+{
+ int end_frames = frames + n;
+ while (1) {
+ AVPacket pkt;
+ uint8_t pktdata[4];
+ av_init_packet(&pkt);
+
+ if (av_compare_ts(audio_dts, audio_st->time_base, video_dts, video_st->time_base) < 0) {
+ pkt.dts = pkt.pts = audio_dts;
+ pkt.stream_index = 1;
+ pkt.duration = audio_duration;
+ audio_dts += audio_duration;
+ } else {
+ if (frames == end_frames)
+ break;
+ pkt.dts = video_dts;
+ pkt.stream_index = 0;
+ pkt.duration = duration;
+ if ((frames % gop_size) == 0) {
+ pkt.flags |= AV_PKT_FLAG_KEY;
+ last_picture = AV_PICTURE_TYPE_I;
+ pkt.pts = pkt.dts + duration;
+ video_dts = pkt.pts;
+ } else {
+ if (last_picture == AV_PICTURE_TYPE_P) {
+ last_picture = AV_PICTURE_TYPE_B;
+ pkt.pts = pkt.dts;
+ video_dts = next_p_pts;
+ } else {
+ last_picture = AV_PICTURE_TYPE_P;
+ if (((frames + 1) % gop_size) == 0) {
+ pkt.pts = pkt.dts + duration;
+ video_dts = pkt.pts;
+ } else {
+ next_p_pts = pkt.pts = pkt.dts + 2 * duration;
+ video_dts += duration;
+ }
+ }
+ }
+ if (!bframes)
+ pkt.pts = pkt.dts;
+ frames++;
+ }
+
+ if (clear_duration)
+ pkt.duration = 0;
+ AV_WB32(pktdata, pkt.pts);
+ pkt.data = pktdata;
+ pkt.size = 4;
+ if (skip_write)
+ continue;
+ if (skip_write_audio && pkt.stream_index == 1)
+ continue;
+ av_write_frame(ctx, &pkt);
+ }
+}
+
+static void mux_gops(int n)
+{
+ mux_frames(gop_size * n);
+}
+
+static void skip_gops(int n)
+{
+ skip_write = 1;
+ mux_gops(n);
+ skip_write = 0;
+}
+
+static void signal_init_ts(void)
+{
+ AVPacket pkt;
+ av_init_packet(&pkt);
+ pkt.size = 0;
+ pkt.data = NULL;
+
+ pkt.stream_index = 0;
+ pkt.dts = video_dts;
+ pkt.pts = 0;
+ av_write_frame(ctx, &pkt);
+
+ pkt.stream_index = 1;
+ pkt.dts = pkt.pts = audio_dts;
+ av_write_frame(ctx, &pkt);
+}
+
+static void finish(void)
+{
+ av_write_trailer(ctx);
+ av_free(ctx->pb);
+ avformat_free_context(ctx);
+ ctx = NULL;
+}
+
+static void help(void)
+{
+ printf("movenc-test [-w]\n"
+ "-w write output into files\n");
+}
+
+int main(int argc, char **argv)
+{
+ int c;
+ uint8_t header[HASH_SIZE];
+ uint8_t content[HASH_SIZE];
+ int empty_moov_pos;
+ int prev_pos;
+
+ for (;;) {
+ c = getopt(argc, argv, "wh");
+ if (c == -1)
+ break;
+ switch (c) {
+ case 'w':
+ write_file = 1;
+ break;
+ default:
+ case 'h':
+ help();
+ return 0;
+ }
+ }
+
+ av_register_all();
+
+ md5 = av_md5_alloc();
+ if (!md5)
+ return 1;
+
+ // Write a fragmented file with an initial moov that actually contains some
+ // samples. One moov+mdat with 1 second of data and one moof+mdat with 1
+ // second of data.
+ init_out("non-empty-moov");
+ av_dict_set(&opts, "movflags", "frag_keyframe", 0);
+ init(0, 0);
+ mux_gops(2);
+ finish();
+ close_out();
+
+ // Write a similar file, but with B-frames and audio preroll, handled
+ // via an edit list.
+ init_out("non-empty-moov-elst");
+ av_dict_set(&opts, "movflags", "frag_keyframe", 0);
+ av_dict_set(&opts, "use_editlist", "1", 0);
+ init(1, 1);
+ mux_gops(2);
+ finish();
+ close_out();
+
+ // Use B-frames but no audio-preroll, but without an edit list.
+ // Due to avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO, the dts
+ // of the first audio packet is > 0, but it is set to zero since edit
+ // lists aren't used, increasing the duration of the first packet instead.
+ init_out("non-empty-moov-no-elst");
+ av_dict_set(&opts, "movflags", "frag_keyframe", 0);
+ av_dict_set(&opts, "use_editlist", "0", 0);
+ init(1, 0);
+ mux_gops(2);
+ finish();
+ close_out();
+
+ format = "ismv";
+ // Write an ISMV, with B-frames and audio preroll.
+ init_out("ismv");
+ av_dict_set(&opts, "movflags", "frag_keyframe", 0);
+ init(1, 1);
+ mux_gops(2);
+ finish();
+ close_out();
+ format = "mp4";
+
+ // An initial moov that doesn't contain any samples, followed by two
+ // moof+mdat pairs.
+ init_out("empty-moov");
+ av_dict_set(&opts, "movflags", "frag_keyframe+empty_moov", 0);
+ init(0, 0);
+ mux_gops(2);
+ finish();
+ close_out();
+ memcpy(content, hash, HASH_SIZE);
+
+ // Similar to the previous one, but with input that doesn't start at
+ // pts/dts 0. avoid_negative_ts behaves in the same way as
+ // in non-empty-moov-no-elst above.
+ init_out("empty-moov-no-elst");
+ av_dict_set(&opts, "movflags", "frag_keyframe+empty_moov", 0);
+ init(1, 0);
+ mux_gops(2);
+ finish();
+ close_out();
+
+ // Same as the previous one, but disable avoid_negative_ts (which
+ // would require using an edit list, but with empty_moov, one can't
+ // write a sensible edit list, when the start timestamps aren't known).
+ // This should trigger a warning - we check that the warning is produced.
+ init_count_warnings();
+ init_out("empty-moov-no-elst-no-adjust");
+ av_dict_set(&opts, "movflags", "frag_keyframe+empty_moov", 0);
+ av_dict_set(&opts, "avoid_negative_ts", "0", 0);
+ init(1, 0);
+ mux_gops(2);
+ finish();
+ close_out();
+
+ reset_count_warnings();
+ check(num_warnings > 0, "No warnings printed for unhandled start offset");
+
+ // Verify that delay_moov produces the same as empty_moov for
+ // simple input
+ init_out("delay-moov");
+ av_dict_set(&opts, "movflags", "frag_keyframe+delay_moov", 0);
+ init(0, 0);
+ mux_gops(2);
+ finish();
+ close_out();
+ check(!memcmp(hash, content, HASH_SIZE), "delay_moov differs from empty_moov");
+
+ // Test writing content that requires an edit list using delay_moov
+ init_out("delay-moov-elst");
+ av_dict_set(&opts, "movflags", "frag_keyframe+delay_moov", 0);
+ init(1, 1);
+ mux_gops(2);
+ finish();
+ close_out();
+
+ // Test writing a file with one track lacking packets, with delay_moov.
+ skip_write_audio = 1;
+ init_out("delay-moov-empty-track");
+ av_dict_set(&opts, "movflags", "frag_keyframe+delay_moov", 0);
+ init(0, 0);
+ mux_gops(2);
+ // The automatic flushing shouldn't output anything, since we're still
+ // waiting for data for some tracks
+ check(out_size == 0, "delay_moov flushed prematurely");
+ // When closed (or manually flushed), all the written data should still
+ // be output.
+ finish();
+ close_out();
+ check(out_size > 0, "delay_moov didn't output anything");
+
+ // Check that manually flushing still outputs things as expected. This
+ // produces two fragments, while the one above produces only one.
+ init_out("delay-moov-empty-track-flush");
+ av_dict_set(&opts, "movflags", "frag_custom+delay_moov", 0);
+ init(0, 0);
+ mux_gops(1);
+ av_write_frame(ctx, NULL); // Force writing the moov
+ check(out_size > 0, "No moov written");
+ av_write_frame(ctx, NULL);
+ mux_gops(1);
+ av_write_frame(ctx, NULL);
+ finish();
+ close_out();
+
+ skip_write_audio = 0;
+
+
+
+ // Verify that the header written by delay_moov when manually flushed
+ // is identical to the one by empty_moov.
+ init_out("empty-moov-header");
+ av_dict_set(&opts, "movflags", "frag_keyframe+empty_moov", 0);
+ init(0, 0);
+ close_out();
+ memcpy(header, hash, HASH_SIZE);
+ init_out("empty-moov-content");
+ mux_gops(2);
+ // Written 2 seconds of content, with an automatic flush after 1 second.
+ check(out_size > 0, "No automatic flush?");
+ empty_moov_pos = prev_pos = out_size;
+ // Manually flush the second fragment
+ av_write_frame(ctx, NULL);
+ check(out_size > prev_pos, "No second fragment flushed?");
+ prev_pos = out_size;
+ // Check that an extra flush doesn't output any more data
+ av_write_frame(ctx, NULL);
+ check(out_size == prev_pos, "More data written?");
+ close_out();
+ memcpy(content, hash, HASH_SIZE);
+ // Ignore the trailer written here
+ finish();
+
+ init_out("delay-moov-header");
+ av_dict_set(&opts, "movflags", "frag_custom+delay_moov", 0);
+ init(0, 0);
+ check(out_size == 0, "Output written during init with delay_moov");
+ mux_gops(1); // Write 1 second of content
+ av_write_frame(ctx, NULL); // Force writing the moov
+ close_out();
+ check(!memcmp(hash, header, HASH_SIZE), "delay_moov header differs from empty_moov");
+ init_out("delay-moov-content");
+ av_write_frame(ctx, NULL); // Flush the first fragment
+ check(out_size == empty_moov_pos, "Manually flushed content differs from automatically flushed, %d vs %d", out_size, empty_moov_pos);
+ mux_gops(1); // Write the rest of the content
+ av_write_frame(ctx, NULL); // Flush the second fragment
+ close_out();
+ check(!memcmp(hash, content, HASH_SIZE), "delay_moov content differs from empty_moov");
+ finish();
+
+
+ // Verify that we can produce an identical second fragment without
+ // writing the first one. First write the reference fragments that
+ // we want to reproduce.
+ av_dict_set(&opts, "movflags", "frag_custom+empty_moov+dash", 0);
+ init(0, 0);
+ mux_gops(1);
+ av_write_frame(ctx, NULL); // Output the first fragment
+ init_out("empty-moov-second-frag");
+ mux_gops(1);
+ av_write_frame(ctx, NULL); // Output the second fragment
+ close_out();
+ memcpy(content, hash, HASH_SIZE);
+ finish();
+
+ // Produce the same second fragment without actually writing the first
+ // one before.
+ av_dict_set(&opts, "movflags", "frag_custom+empty_moov+dash+frag_discont", 0);
+ av_dict_set(&opts, "fragment_index", "2", 0);
+ av_dict_set(&opts, "avoid_negative_ts", "0", 0);
+ av_dict_set(&opts, "use_editlist", "0", 0);
+ init(0, 0);
+ skip_gops(1);
+ init_out("empty-moov-second-frag-discont");
+ mux_gops(1);
+ av_write_frame(ctx, NULL); // Output the second fragment
+ close_out();
+ check(!memcmp(hash, content, HASH_SIZE), "discontinuously written fragment differs");
+ finish();
+
+ // Produce the same thing by using delay_moov, which requires a slightly
+ // different call sequence.
+ av_dict_set(&opts, "movflags", "frag_custom+delay_moov+dash+frag_discont", 0);
+ av_dict_set(&opts, "fragment_index", "2", 0);
+ init(0, 0);
+ skip_gops(1);
+ mux_gops(1);
+ av_write_frame(ctx, NULL); // Output the moov
+ init_out("delay-moov-second-frag-discont");
+ av_write_frame(ctx, NULL); // Output the second fragment
+ close_out();
+ check(!memcmp(hash, content, HASH_SIZE), "discontinuously written fragment differs");
+ finish();
+
+
+ // Test discontinuously written fragments with B-frames (where the
+ // assumption of starting at pts=0 works) but not with audio preroll
+ // (which can't be guessed).
+ av_dict_set(&opts, "movflags", "frag_custom+delay_moov+dash", 0);
+ init(1, 0);
+ mux_gops(1);
+ init_out("delay-moov-elst-init");
+ av_write_frame(ctx, NULL); // Output the moov
+ close_out();
+ memcpy(header, hash, HASH_SIZE);
+ av_write_frame(ctx, NULL); // Output the first fragment
+ init_out("delay-moov-elst-second-frag");
+ mux_gops(1);
+ av_write_frame(ctx, NULL); // Output the second fragment
+ close_out();
+ memcpy(content, hash, HASH_SIZE);
+ finish();
+
+ av_dict_set(&opts, "movflags", "frag_custom+delay_moov+dash+frag_discont", 0);
+ av_dict_set(&opts, "fragment_index", "2", 0);
+ init(1, 0);
+ skip_gops(1);
+ mux_gops(1); // Write the second fragment
+ init_out("delay-moov-elst-init-discont");
+ av_write_frame(ctx, NULL); // Output the moov
+ close_out();
+ check(!memcmp(hash, header, HASH_SIZE), "discontinuously written header differs");
+ init_out("delay-moov-elst-second-frag-discont");
+ av_write_frame(ctx, NULL); // Output the second fragment
+ close_out();
+ check(!memcmp(hash, content, HASH_SIZE), "discontinuously written fragment differs");
+ finish();
+
+
+ // Test discontinuously written fragments with B-frames and audio preroll,
+ // properly signaled.
+ av_dict_set(&opts, "movflags", "frag_custom+delay_moov+dash", 0);
+ init(1, 1);
+ mux_gops(1);
+ init_out("delay-moov-elst-signal-init");
+ av_write_frame(ctx, NULL); // Output the moov
+ close_out();
+ memcpy(header, hash, HASH_SIZE);
+ av_write_frame(ctx, NULL); // Output the first fragment
+ init_out("delay-moov-elst-signal-second-frag");
+ mux_gops(1);
+ av_write_frame(ctx, NULL); // Output the second fragment
+ close_out();
+ memcpy(content, hash, HASH_SIZE);
+ finish();
+
+ av_dict_set(&opts, "movflags", "frag_custom+delay_moov+dash+frag_discont", 0);
+ av_dict_set(&opts, "fragment_index", "2", 0);
+ init(1, 1);
+ signal_init_ts();
+ skip_gops(1);
+ mux_gops(1); // Write the second fragment
+ init_out("delay-moov-elst-signal-init-discont");
+ av_write_frame(ctx, NULL); // Output the moov
+ close_out();
+ check(!memcmp(hash, header, HASH_SIZE), "discontinuously written header differs");
+ init_out("delay-moov-elst-signal-second-frag-discont");
+ av_write_frame(ctx, NULL); // Output the second fragment
+ close_out();
+ check(!memcmp(hash, content, HASH_SIZE), "discontinuously written fragment differs");
+ finish();
+
+
+ // Test VFR content, with sidx atoms (which declare the pts duration
+ // of a fragment, forcing overriding the start pts of the next one).
+ // Here, the fragment duration in pts is significantly different from
+ // the duration in dts. The video stream starts at dts=-10,pts=0, and
+ // the second fragment starts at dts=155,pts=156. The trun duration sum
+ // of the first fragment is 165, which also is written as
+ // baseMediaDecodeTime in the tfdt in the second fragment. The sidx for
+ // the first fragment says earliest_presentation_time = 0 and
+ // subsegment_duration = 156, which also matches the sidx in the second
+ // fragment. For the audio stream, the pts and dts durations also don't
+ // match - the input stream starts at pts=-2048, but that part is excluded
+ // by the edit list.
+ init_out("vfr");
+ av_dict_set(&opts, "movflags", "frag_keyframe+delay_moov+dash", 0);
+ init_fps(1, 1, 3);
+ mux_frames(gop_size/2);
+ duration /= 10;
+ mux_frames(gop_size/2);
+ mux_gops(1);
+ finish();
+ close_out();
+
+ // Test VFR content, with cleared duration fields. In these cases,
+ // the muxer must guess the duration of the last packet of each
+ // fragment. As long as the framerate doesn't vary (too much) at the
+ // fragment edge, it works just fine. Additionally, when automatically
+ // cutting fragments, the muxer already know the timestamps of the next
+ // packet for one stream (in most cases the video stream), avoiding
+ // having to use guesses for that one.
+ init_count_warnings();
+ clear_duration = 1;
+ init_out("vfr-noduration");
+ av_dict_set(&opts, "movflags", "frag_keyframe+delay_moov+dash", 0);
+ init_fps(1, 1, 3);
+ mux_frames(gop_size/2);
+ duration /= 10;
+ mux_frames(gop_size/2);
+ mux_gops(1);
+ finish();
+ close_out();
+ clear_duration = 0;
+ reset_count_warnings();
+ check(num_warnings > 0, "No warnings printed for filled in durations");
+
+ av_free(md5);
+
+ return check_faults > 0 ? 1 : 0;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-19 01:47:24 +0000