Function omx_encode_init

libavcodec/omx.c:643–738

}

static av_cold int omx_encode_init(AVCodecContext *avctx)
{
    OMXCodecContext *s = avctx->priv_data;
    int ret = AVERROR_ENCODER_NOT_FOUND;
    const char *role;
    OMX_BUFFERHEADERTYPE *buffer;
    OMX_ERRORTYPE err;

    av_log(avctx, AV_LOG_WARNING,
           "The %s encoder is deprecated and will be removed in future versions\n",
           avctx->codec->name);

    /* cleanup relies on the mutexes/conditions being initialized first. */
    ret = ff_pthread_init(s, omx_codec_context_offsets);
    if (ret < 0)
        return ret;
    s->omx_context = omx_init(avctx, s->libname, s->libprefix);
    if (!s->omx_context)
        return AVERROR_ENCODER_NOT_FOUND;

    s->avctx = avctx;
    s->state = OMX_StateLoaded;
    s->error = OMX_ErrorNone;

    switch (avctx->codec->id) {
    case AV_CODEC_ID_MPEG4:
        role = "video_encoder.mpeg4";
        break;
    case AV_CODEC_ID_H264:
        role = "video_encoder.avc";
        break;
    default:
        return AVERROR(ENOSYS);
    }

    if ((ret = find_component(s->omx_context, avctx, role, s->component_name, sizeof(s->component_name))) < 0)
        goto fail;

    av_log(avctx, AV_LOG_INFO, "Using %s\n", s->component_name);

    if ((ret = omx_component_init(avctx, role)) < 0)
        goto fail;

    if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
        while (1) {
            buffer = get_buffer(&s->output_mutex, &s->output_cond,
                                &s->num_done_out_buffers, s->done_out_buffers, 1);
            if (buffer->nFlags & OMX_BUFFERFLAG_CODECCONFIG) {
                if (buffer->nFilledLen > INT32_MAX - AV_INPUT_BUFFER_PADDING_SIZE - avctx->extradata_size) {
                    ret = AVERROR(ENOMEM);
                    goto fail;
                }

                if ((ret = av_reallocp(&avctx->extradata, avctx->extradata_size + buffer->nFilledLen + AV_INPUT_BUFFER_PADDING_SIZE)) < 0) {
                    avctx->extradata_size = 0;
                    goto fail;
                }
                memcpy(avctx->extradata + avctx->extradata_size, buffer->pBuffer + buffer->nOffset, buffer->nFilledLen);