[FFmpeg-devel] [PATCH 1/2] avocdec/ttaenc: buffer packets directly

[James Almer]

On 11/23/2017 2:00 AM, James Almer wrote:
> On 11/20/2017 5:44 PM, James Almer wrote:
>> This is a bit more robust in case of OOM.
>>
>> Signed-off-by: James Almer <jamrial at gmail.com>
>> ---
>>  libavformat/ttaenc.c | 42 +++++++++++++++++++++++++++++++++---------
>>  1 file changed, 33 insertions(+), 9 deletions(-)
>>
>> diff --git a/libavformat/ttaenc.c b/libavformat/ttaenc.c
>> index fdce1e3dc1..b05705b6b6 100644
>> --- a/libavformat/ttaenc.c
>> +++ b/libavformat/ttaenc.c
>> @@ -29,7 +29,7 @@
>>  
>>  typedef struct TTAMuxContext {
>>      AVIOContext *seek_table;
>> -    AVIOContext *data;
>> +    AVPacketList *queue, *queue_end;
>>      uint32_t nb_samples;
>>      int frame_size;
>>      int last_frame;
>> @@ -56,10 +56,6 @@ static int tta_write_header(AVFormatContext *s)
>>  
>>      if ((ret = avio_open_dyn_buf(&tta->seek_table)) < 0)
>>          return ret;
>> -    if ((ret = avio_open_dyn_buf(&tta->data)) < 0) {
>> -        ffio_free_dyn_buf(&tta->seek_table);
>> -        return ret;
>> -    }
>>  
>>      /* Ignore most extradata information if present. It can be innacurate
>>         if for example remuxing from Matroska */
>> @@ -84,8 +80,23 @@ static int tta_write_header(AVFormatContext *s)
>>  static int tta_write_packet(AVFormatContext *s, AVPacket *pkt)
>>  {
>>      TTAMuxContext *tta = s->priv_data;
>> +    AVPacketList *pktl = av_mallocz(sizeof(*pktl));
>> +    int ret;
>> +
>> +    if (!pktl)
>> +        return AVERROR(ENOMEM);
>> +
>> +    ret = av_packet_ref(&pktl->pkt, pkt);
>> +    if (ret < 0) {
>> +        av_free(pktl);
>> +        return ret;
>> +    }
>> +    if (tta->queue_end)
>> +        tta->queue_end->next = pktl;
>> +    else
>> +        tta->queue = pktl;
>> +    tta->queue_end = pktl;
>>  
>> -    avio_write(tta->data, pkt->data, pkt->size);
>>      avio_wl32(tta->seek_table, pkt->size);
>>      tta->nb_samples += pkt->duration;
>>  
>> @@ -106,6 +117,21 @@ static int tta_write_packet(AVFormatContext *s, AVPacket *pkt)
>>      return 0;
>>  }
>>  
>> +static void tta_queue_flush(AVFormatContext *s)
>> +{
>> +    TTAMuxContext *tta = s->priv_data;
>> +    AVPacketList *pktl;
>> +
>> +    while (pktl = tta->queue) {
>> +        AVPacket *pkt = &pktl->pkt;
>> +        avio_write(s->pb, pkt->data, pkt->size);
>> +        av_packet_unref(pkt);
>> +        tta->queue = pktl->next;
>> +        av_free(pktl);
>> +    }
>> +    tta->queue_end = NULL;
>> +}
>> +
>>  static int tta_write_trailer(AVFormatContext *s)
>>  {
>>      TTAMuxContext *tta = s->priv_data;
>> @@ -125,9 +151,7 @@ static int tta_write_trailer(AVFormatContext *s)
>>      av_free(ptr);
>>  
>>      /* Write audio data */
>> -    size = avio_close_dyn_buf(tta->data, &ptr);
>> -    avio_write(s->pb, ptr, size);
>> -    av_free(ptr);
>> +    tta_queue_flush(s);
>>  
>>      ff_ape_write_tag(s);
>>      avio_flush(s->pb);
> 
> Ping.

Patchset pushed.