diff options
Diffstat (limited to 'ffmpeg/libavformat/mpegenc.c')
| -rw-r--r-- | ffmpeg/libavformat/mpegenc.c | 37 |
1 files changed, 29 insertions, 8 deletions
diff --git a/ffmpeg/libavformat/mpegenc.c b/ffmpeg/libavformat/mpegenc.c index b467bb5..ccf3ec2 100644 --- a/ffmpeg/libavformat/mpegenc.c +++ b/ffmpeg/libavformat/mpegenc.c @@ -19,6 +19,9 @@ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ +#include <stdint.h> + +#include "libavutil/attributes.h" #include "libavutil/fifo.h" #include "libavutil/log.h" #include "libavutil/mathematics.h" @@ -264,8 +267,7 @@ static int put_system_header(AVFormatContext *ctx, uint8_t *buf,int only_for_str flush_put_bits(&pb); size = put_bits_ptr(&pb) - pb.buf; /* patch packet size */ - buf[4] = (size - 6) >> 8; - buf[5] = (size - 6) & 0xff; + AV_WB16(buf + 4, size - 6); return size; } @@ -293,7 +295,7 @@ static int get_system_header_size(AVFormatContext *ctx) return buf_index; } -static int mpeg_mux_init(AVFormatContext *ctx) +static av_cold int mpeg_mux_init(AVFormatContext *ctx) { MpegMuxContext *s = ctx->priv_data; int bitrate, i, mpa_id, mpv_id, mps_id, ac3_id, dts_id, lpcm_id, j; @@ -320,7 +322,7 @@ static int mpeg_mux_init(AVFormatContext *ctx) } else s->packet_size = 2048; if (ctx->max_delay < 0) /* Not set by the caller */ - ctx->max_delay = 0; + ctx->max_delay = 0.7*AV_TIME_BASE; s->vcd_padding_bytes_written = 0; s->vcd_padding_bitrate=0; @@ -344,6 +346,15 @@ static int mpeg_mux_init(AVFormatContext *ctx) switch(st->codec->codec_type) { case AVMEDIA_TYPE_AUDIO: + if (!s->is_mpeg2 && + (st->codec->codec_id == AV_CODEC_ID_AC3 || + st->codec->codec_id == AV_CODEC_ID_DTS || + st->codec->codec_id == AV_CODEC_ID_PCM_S16BE)) + av_log(ctx, AV_LOG_WARNING, + "%s in MPEG-1 system streams is not widely supported, " + "consider using the vob or the dvd muxer " + "to force a MPEG-2 program stream.\n", + avcodec_get_name(st->codec->codec_id)); if (st->codec->codec_id == AV_CODEC_ID_AC3) { stream->id = ac3_id++; } else if (st->codec->codec_id == AV_CODEC_ID_DTS) { @@ -379,6 +390,10 @@ static int mpeg_mux_init(AVFormatContext *ctx) av_log(ctx, AV_LOG_WARNING, "VBV buffer size not set, muxing may fail\n"); stream->max_buffer_size = 230*1024; //FIXME this is probably too small as default } + if (stream->max_buffer_size > 1024 * 8191) { + av_log(ctx, AV_LOG_WARNING, "buffer size %d, too large\n", stream->max_buffer_size); + stream->max_buffer_size = 1024 * 8191; + } s->video_bound++; break; case AVMEDIA_TYPE_SUBTITLE: @@ -424,6 +439,10 @@ static int mpeg_mux_init(AVFormatContext *ctx) bitrate += bitrate / 20; bitrate += 10000; s->mux_rate = (bitrate + (8 * 50) - 1) / (8 * 50); + if (s->mux_rate >= (1<<22)) { + av_log(ctx, AV_LOG_WARNING, "mux rate %d is too large\n", s->mux_rate); + s->mux_rate = (1<<22) - 1; + } } if (s->is_vcd) { @@ -905,7 +924,7 @@ static int remove_decoded_packets(AVFormatContext *ctx, int64_t scr){ if(stream->buffer_index < pkt_desc->size || stream->predecode_packet == stream->premux_packet){ av_log(ctx, AV_LOG_ERROR, - "buffer underflow i=%d bufi=%d size=%d\n", + "buffer underflow st=%d bufi=%d size=%d\n", i, stream->buffer_index, pkt_desc->size); break; } @@ -947,14 +966,16 @@ retry: return 0; if(avail_data==0) continue; - assert(avail_data>0); + av_assert0(avail_data>0); if(space < s->packet_size && !ignore_constraints) continue; if(next_pkt && next_pkt->dts - scr > max_delay) continue; - + if ( stream->predecode_packet + && stream->predecode_packet->size > stream->buffer_index) + rel_space += 1<<28; if(rel_space > best_score){ best_score= rel_space; best_i = i; @@ -1144,7 +1165,7 @@ static int mpeg_mux_end(AVFormatContext *ctx) #define OFFSET(x) offsetof(MpegMuxContext, x) #define E AV_OPT_FLAG_ENCODING_PARAM static const AVOption options[] = { - { "muxrate", NULL, OFFSET(user_mux_rate), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E }, + { "muxrate", NULL, OFFSET(user_mux_rate), AV_OPT_TYPE_INT, {.i64 = 0}, 0, ((1<<22) - 1) * (8 * 50), E }, { "preload", "Initial demux-decode delay in microseconds.", OFFSET(preload), AV_OPT_TYPE_INT, {.i64 = 500000}, 0, INT_MAX, E}, { NULL }, }; |